Tired of RZ breaking at HS. Thinking about a brand new SV-..

Bob Nixon wrote:
> On Sep 11, 11:32 pm, Bob Nixon wrote:
>> And idea's or comments.
>>
>> Bob Nixon
>
> As an update, I took off the left exhaust pipe this afternoon and the
> RZ's damage goes beyond a simple reed valve. The left piston is toast
> adjacent from the exhaust port. Not burned but scrapped and busted
> like the last time. Hopefully I'll get away with just a new piston
> this time as I could feel no irregularities in the surface of the
> cylinder like before. It's apparent that the RZ was never meant to be
> ridden that hard for more than just spurts. Pushing 90 at 100 degrees
> out for 25 miles and up to 120 on the big sweepers is not the little
> 350's forte. Tim used to race them, so I wonder what his experience
> was. Maybe he was running premix & at cooler temps.
>
> Bob Nixon.
>


Bugger! You only repaired the motor recently didn't you?

Sell it as a project bike and get that SV today!
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

Bob Nixon wrote in
50g2000hsm.googlegroups.com:

> Andy. I can't think of the brand name but it's T2 ester based
> synthetic @ $13/guart at cycle gear and was being consumed at about
> 30-35:1 rate based of Gas and oil consumption.

Sounds fine; both the oil type and ratio.

> As far as the jetting goes when I
> had the reeds replace to low rev carbon fiber models, the air screws
> were opened up 1/2 turn per instructions. On the HS jets nothing has
> changed since I bought the bike and both the piston's "right 1st", now
> left aligned with the huge round exhaust port were not melted but
> broken.

It's starting to sound like high temperatures are the enemy here.
They're getting high enough that preignition is a possibility,
especially if the fuel octane is marginal. It's hard to get the gas
these things were designed for today; what fuel are you running?

When racing, some of us would run a hair rich on the pilots. This did a
couple of things. It would soften the initial hit when you crack the
throttle on (without hurting drive off the corner) and would ensure that
you got a little extra oil film on the cylinder walls for the run down
the next straight. That isn't exactly the riding scenario you're in,
but leaning out the air screws might not be so good, especially in
higher temps. For sustained high speed, going a little rich on the
mains might not hurt, at least to help establish if that's the problem.
And it might actually be necessary, at least during the hot months. It
will provide better lubrication and you should see slightly lower temps,
all other things being equal.

Can you change mains on the RD without taking the float bowls off? The
TZ had 17mm plugs in the bottom of the float bowls, so all you needed
was a wrench and a slamm nut driver to change mains. Took about ten
minutes and most of that was removing and replacing bodywork.

> The heat gage runs close to 212 at over 100MPH and less the slower I
> ride. When the piston broke both times the temp went down ro
> 180=themostat setting, for the rest of the ride home.on the freeway at
> about 70 at or near WOT. BTW, I use Engine-ICE=propalyne gycol in the
> radiator.

What ratio on coolant to water? If you've got 50:50 anti-freeze to
water, I'd cut back on the anti-freeze and use more water. Maybe 1:2.
It'll give a litte more effective cooling.

It makes sense of course that the engine cools off when one cylinder
stops functioning, since you're producing half the BTUs into the same
cooling system.

> On your premix idea, Can I run say a 50:1 premix and leave the oil
> pump working. It might smoke a bit but it would provide some safety
> margin but only that might carbon up the power valve or other engine
> parts.

I don't see why you couldn't do that, though it would make gas stops a
pain in the butt. If the other suggestions above make a difference, the
bike would be easier to live with.

One last idea: Have you tested for an air leak? The cases should hold
6 psi for a minute. If you have a leak, you've lost control over the
mixture and are running leaner than you want to be.

> As it was with the new softer reeds, I could crack the throttle in 6th
> at 3000RPM and run up to redline with a 600cc type power band or maybe
> a bit fatter in the middle. I'm at my wits end with this bike. I had
> three RD's back in the 70's and never had any engine problems with
> them.

Sounds nice. Despite the grief, it sounds like this bike would be worth
it if you can keep the pistons in one piece.

ab
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

On Sep 12, 1:32 am, Bob Nixon wrote:
> And idea's or comments.
>
> Bob Nixon

Bob - sorry to hear of the extensive trouble on you smoker.

There was some talk about Triumph Triples, and a lot of confusion.
FWIW - here's the differences between the 675 Street Triple and the
1050 Speed Triple:

675 vs 1050 cc
107hp vs 132 hp
51 ftlbs vs 77 ftlbs (torque)
368lbs vs 416 lbs (dry weight)
$7999 vs $9999
31.5 in vs 32.1 in (seat height)
same colors
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

On Sep 15, 6:56 am, Berg wrote:
> Bob Nixon wrote:
> > On Sep 12, 3:53 pm, "tomor...@erols.com" wrote:
> >> On Sep 12, 2:26 pm, Bob Nixon wrote:
>
> >>> On Sep 12, 5:30 am, "tomor...@erols.com" wrote:
> >>>> On Sep 12, 2:32 am, Bob Nixon wrote:
> >>>>> And idea's or comments.
> >>>> ... Honda CB-1 .... ?
> >>> Thanks for the suggestion but hard to find at a reasonable price, low
> >>> power and it's a Honda.
> >>>> The ergos are excellent, it's light and flickable, it has modern
> >>>> suspension, brakes, and frame geometry.
> >>>> What's not to like?
> >>> The brand;)
> >> Sorry. When you ask for ideas and input next time, I'll try to
> >> remember to exclude Hondas and Ducatis. Luckily, I already know to
> >> exclude all Buells, Harleys, Aprilias, and any/all single cylinder
> >> motorcycles. Luckily, that will save us both time as well as cut
> >> down on silly suggestions like considering a Honda!
>
> > You don't need to make this a fight with sarcasm. Just think about the
> > choices you've presented to me.
>
> > 1) CB-1 400 cc Honda. Otherwise a good idea (being small and light but
> > lacking in power & especially torque. How would that be any better
> > choise than my present RZ-350? Hint: It's old too and would be subject
> > to the same problems cruising above 80MPH. Other Honda's, being
> > Honda's the "least dynamic of all MC companies" save HD, just don't
> > have anything light and fast save maybe the 600 Hornet and it always
> > get's beat out in the comparo's by the SV-650, Same with Yamaha FZ-6 &
> > the new Kwak twin.
>
> > 2) Ducati's of any sort are IMO heavier than their Japanese
> > counterparts for X sized engine, EX: SV-650 vs DUC 620. Any bike I buy
> > will never see the track so a bit better brakes or suspension vs a
> > smoother SV engine and poorer suspension & brakes will not make that
> > much difference. Just look how fast you can push that Harley on the
> > street. Next Tim, you can't convince me that Ducati engine vibration
> > technology has gone from dead last to best. It's just imposible from
> > both phyics and manufacturing standpoint.
> > ..
> > 3) What 4 cycle single could you imagine cruising at 80+ MPH and not
> > having a seat height of >32". I've only one leg/half a heart and
> > that's the main reason for a small light bike that is also fairly
> > fast=(my own liking).
>
> > 4) I've ridden almost all the prillers save the tuano & Capincord. I
> > hate their 60 degree twins and their all close to 500lbs and have
> > relatively high seat hieghts.
>
> > 5) What Buell would cruise reriably and comfortable at HS yet weigh
> > <400lbs + the low seat height thing.
>
> > 6) That leaves (your suggestions) Harley with low seat height but far
> > too heavy and slow.
>
> > Tim, I think we used to ride similar motorcycles but split after the
> > RZ-350. I stayed with Japanese bikes, (you had an S3 but it's my least
> > favorite Triumph due to poor wind protection). I just can't see status
> > bikes for their own sake, like Harleys, Ducati's & Prillers. Hell, I
> > could have kept the Sprint or bought another GSXR1000 and had similar
> > seat height than what you're suggesting save the 4 cycle I4 CB-1. If I
> > was normal and just wanted another bike, I'd buy an 00 or 01 Honda VFR
> > or just have kept the Sprint & GSXR1000.
>
> > Bob Nixon.
>
> How about this?:http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f800s(Can be ordered
> with low suspension).
>
> Or this:http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f650gs(Can be ordered
> with a low frame option).
>
> Or this:http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f800st(Can be ordered
> with low suspension).
>
> J.- Hide quoted text -
>
> - Show quoted text -

The problem I have with this bike is as follow:
1) It's an expenssive (low bang for the buck) BMW parellel twin. Worst
twin configuration for vibes.
2) Will it beat the lighter SV-560? I doubt it?
3) Is it lighter and lower slung than the SV-650? Again very doubtful.
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

On Sep 15, 3:52 pm, Bob Nixon wrote:
> On Sep 15, 6:56 am, Berg wrote:
>
>
>
>
>
> > Bob Nixon wrote:
> > > On Sep 12, 3:53 pm, "tomor...@erols.com" wrote:
> > >> On Sep 12, 2:26 pm, Bob Nixon wrote:
>
> > >>> On Sep 12, 5:30 am, "tomor...@erols.com" wrote:
> > >>>> On Sep 12, 2:32 am, Bob Nixon wrote:
> > >>>>> And idea's or comments.
> > >>>> ... Honda CB-1 .... ?
> > >>> Thanks for the suggestion but hard to find at a reasonable price, low
> > >>> power and it's a Honda.
> > >>>> The ergos are excellent, it's light and flickable, it has modern
> > >>>> suspension, brakes, and frame geometry.
> > >>>> What's not to like?
> > >>> The brand;)
> > >> Sorry. When you ask for ideas and input next time, I'll try to
> > >> remember to exclude Hondas and Ducatis. Luckily, I already know to
> > >> exclude all Buells, Harleys, Aprilias, and any/all single cylinder
> > >> motorcycles. Luckily, that will save us both time as well as cut
> > >> down on silly suggestions like considering a Honda!
>
> > > You don't need to make this a fight with sarcasm. Just think about the
> > > choices you've presented to me.
>
> > > 1) CB-1 400 cc Honda. Otherwise a good idea (being small and light but
> > > lacking in power & especially torque. How would that be any better
> > > choise than my present RZ-350? Hint: It's old too and would be subject
> > > to the same problems cruising above 80MPH. Other Honda's, being
> > > Honda's the "least dynamic of all MC companies" save HD, just don't
> > > have anything light and fast save maybe the 600 Hornet and it always
> > > get's beat out in the comparo's by the SV-650, Same with Yamaha FZ-6 &
> > > the new Kwak twin.
>
> > > 2) Ducati's of any sort are IMO heavier than their Japanese
> > > counterparts for X sized engine, EX: SV-650 vs DUC 620. Any bike I buy
> > > will never see the track so a bit better brakes or suspension vs a
> > > smoother SV engine and poorer suspension & brakes will not make that
> > > much difference. Just look how fast you can push that Harley on the
> > > street. Next Tim, you can't convince me that Ducati engine vibration
> > > technology has gone from dead last to best. It's just imposible from
> > > both phyics and manufacturing standpoint.
> > > ..
> > > 3) What 4 cycle single could you imagine cruising at 80+ MPH and not
> > > having a seat height of >32". I've only one leg/half a heart and
> > > that's the main reason for a small light bike that is also fairly
> > > fast=(my own liking).
>
> > > 4) I've ridden almost all the prillers save the tuano & Capincord. I
> > > hate their 60 degree twins and their all close to 500lbs and have
> > > relatively high seat hieghts.
>
> > > 5) What Buell would cruise reriably and comfortable at HS yet weigh
> > > <400lbs + the low seat height thing.
>
> > > 6) That leaves (your suggestions) Harley with low seat height but far
> > > too heavy and slow.
>
> > > Tim, I think we used to ride similar motorcycles but split after the
> > > RZ-350. I stayed with Japanese bikes, (you had an S3 but it's my least
> > > favorite Triumph due to poor wind protection). I just can't see status
> > > bikes for their own sake, like Harleys, Ducati's & Prillers. Hell, I
> > > could have kept the Sprint or bought another GSXR1000 and had similar
> > > seat height than what you're suggesting save the 4 cycle I4 CB-1. If I
> > > was normal and just wanted another bike, I'd buy an 00 or 01 Honda VFR
> > > or just have kept the Sprint & GSXR1000.
>
> > > Bob Nixon.
>
> > How about this?:http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f800s(Canbe ordered
> > with low suspension).
>
> > Or this:http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f650gs(Canbe ordered
> > with a low frame option).
>
> > Or this:http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f800st(Canbe ordered
> > with low suspension).
>
> > J.- Hide quoted text -
>
> > - Show quoted text -
>
> The problem I have with this bike is as follow:
> 1) It's an expenssive (low bang for the buck) BMW parellel twin. Worst
> twin configuration for vibes.
> 2) Will it beat the lighter SV-560? I doubt it?
> 3) Is it lighter and lower slung than the SV-650? Again very doubtful.- Hide quoted text -
>
> - Show quoted text -

Pick up Bike magazine. They wet themselves over the new Street Triple
and knowing how you love the triples, that's gotta be your bike. Nice
standard riding position and everything.
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

On Sep 15, 8:56 am, Berg wrote:
> Bob Nixon wrote:
> > On Sep 12, 3:53 pm, "tomor...@erols.com" wrote:
> >> On Sep 12, 2:26 pm, Bob Nixon wrote:
>
> >>> On Sep 12, 5:30 am, "tomor...@erols.com" wrote:
> >>>> On Sep 12, 2:32 am, Bob Nixon wrote:
> >>>>> And idea's or comments.
> >>>> ... Honda CB-1 .... ?
> >>> Thanks for the suggestion but hard to find at a reasonable price, low
> >>> power and it's a Honda.
> >>>> The ergos are excellent, it's light and flickable, it has modern
> >>>> suspension, brakes, and frame geometry.
> >>>> What's not to like?
> >>> The brand;)
> >> Sorry. When you ask for ideas and input next time, I'll try to
> >> remember to exclude Hondas and Ducatis. Luckily, I already know to
> >> exclude all Buells, Harleys, Aprilias, and any/all single cylinder
> >> motorcycles. Luckily, that will save us both time as well as cut
> >> down on silly suggestions like considering a Honda!
>
> > You don't need to make this a fight with sarcasm. Just think about the
> > choices you've presented to me.
>
> > 1) CB-1 400 cc Honda. Otherwise a good idea (being small and light but
> > lacking in power & especially torque. How would that be any better
> > choise than my present RZ-350? Hint: It's old too and would be subject
> > to the same problems cruising above 80MPH. Other Honda's, being
> > Honda's the "least dynamic of all MC companies" save HD, just don't
> > have anything light and fast save maybe the 600 Hornet and it always
> > get's beat out in the comparo's by the SV-650, Same with Yamaha FZ-6 &
> > the new Kwak twin.
>
> > 2) Ducati's of any sort are IMO heavier than their Japanese
> > counterparts for X sized engine, EX: SV-650 vs DUC 620. Any bike I buy
> > will never see the track so a bit better brakes or suspension vs a
> > smoother SV engine and poorer suspension & brakes will not make that
> > much difference. Just look how fast you can push that Harley on the
> > street. Next Tim, you can't convince me that Ducati engine vibration
> > technology has gone from dead last to best. It's just imposible from
> > both phyics and manufacturing standpoint.
> > ..
> > 3) What 4 cycle single could you imagine cruising at 80+ MPH and not
> > having a seat height of >32". I've only one leg/half a heart and
> > that's the main reason for a small light bike that is also fairly
> > fast=(my own liking).
>
> > 4) I've ridden almost all the prillers save the tuano & Capincord. I
> > hate their 60 degree twins and their all close to 500lbs and have
> > relatively high seat hieghts.
>
> > 5) What Buell would cruise reriably and comfortable at HS yet weigh
> > <400lbs + the low seat height thing.
>
> > 6) That leaves (your suggestions) Harley with low seat height but far
> > too heavy and slow.
>
> > Tim, I think we used to ride similar motorcycles but split after the
> > RZ-350. I stayed with Japanese bikes, (you had an S3 but it's my least
> > favorite Triumph due to poor wind protection). I just can't see status
> > bikes for their own sake, like Harleys, Ducati's & Prillers. Hell, I
> > could have kept the Sprint or bought another GSXR1000 and had similar
> > seat height than what you're suggesting save the 4 cycle I4 CB-1. If I
> > was normal and just wanted another bike, I'd buy an 00 or 01 Honda VFR
> > or just have kept the Sprint & GSXR1000.
>
> > Bob Nixon.
>
> How about this?:http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f800s(Can be ordered
> with low suspension).
>
> Or this:http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f650gs(Can be ordered
> with a low frame option).
>
> Or this:http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f800st(Can be ordered
> with low suspension).
>
> J.

I like the F800 series a lot. I think an F800GS would be a great
innovation, as well, though too tall for Bob's request in this
thread. The size and weight of the 800 is good for sport touring, and
sunday mornings. Sorta lacks power though, compared to the Triumph
675..... But that's just my harp playing again.
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

Bob Nixon wrote:
> On Sep 12, 3:53 pm, "tomor...@erols.com" wrote:
>> On Sep 12, 2:26 pm, Bob Nixon wrote:
>>
>>> On Sep 12, 5:30 am, "tomor...@erols.com" wrote:
>>>> On Sep 12, 2:32 am, Bob Nixon wrote:
>>>>> And idea's or comments.
>>>> ... Honda CB-1 .... ?
>>> Thanks for the suggestion but hard to find at a reasonable price, low
>>> power and it's a Honda.
>>>> The ergos are excellent, it's light and flickable, it has modern
>>>> suspension, brakes, and frame geometry.
>>>> What's not to like?
>>> The brand;)
>> Sorry. When you ask for ideas and input next time, I'll try to
>> remember to exclude Hondas and Ducatis. Luckily, I already know to
>> exclude all Buells, Harleys, Aprilias, and any/all single cylinder
>> motorcycles. Luckily, that will save us both time as well as cut
>> down on silly suggestions like considering a Honda!
>
> You don't need to make this a fight with sarcasm. Just think about the
> choices you've presented to me.
>
> 1) CB-1 400 cc Honda. Otherwise a good idea (being small and light but
> lacking in power & especially torque. How would that be any better
> choise than my present RZ-350? Hint: It's old too and would be subject
> to the same problems cruising above 80MPH. Other Honda's, being
> Honda's the "least dynamic of all MC companies" save HD, just don't
> have anything light and fast save maybe the 600 Hornet and it always
> get's beat out in the comparo's by the SV-650, Same with Yamaha FZ-6 &
> the new Kwak twin.
>
> 2) Ducati's of any sort are IMO heavier than their Japanese
> counterparts for X sized engine, EX: SV-650 vs DUC 620. Any bike I buy
> will never see the track so a bit better brakes or suspension vs a
> smoother SV engine and poorer suspension & brakes will not make that
> much difference. Just look how fast you can push that Harley on the
> street. Next Tim, you can't convince me that Ducati engine vibration
> technology has gone from dead last to best. It's just imposible from
> both phyics and manufacturing standpoint.
> ..
> 3) What 4 cycle single could you imagine cruising at 80+ MPH and not
> having a seat height of >32". I've only one leg/half a heart and
> that's the main reason for a small light bike that is also fairly
> fast=(my own liking).
>
> 4) I've ridden almost all the prillers save the tuano & Capincord. I
> hate their 60 degree twins and their all close to 500lbs and have
> relatively high seat hieghts.
>
> 5) What Buell would cruise reriably and comfortable at HS yet weigh
> <400lbs + the low seat height thing.
>
> 6) That leaves (your suggestions) Harley with low seat height but far
> too heavy and slow.
>
> Tim, I think we used to ride similar motorcycles but split after the
> RZ-350. I stayed with Japanese bikes, (you had an S3 but it's my least
> favorite Triumph due to poor wind protection). I just can't see status
> bikes for their own sake, like Harleys, Ducati's & Prillers. Hell, I
> could have kept the Sprint or bought another GSXR1000 and had similar
> seat height than what you're suggesting save the 4 cycle I4 CB-1. If I
> was normal and just wanted another bike, I'd buy an 00 or 01 Honda VFR
> or just have kept the Sprint & GSXR1000.
>
> Bob Nixon.
>


How about this?:
http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f800s (Can be ordered
with low suspension).

Or this:
http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f650gs (Can be ordered
with a low frame option).

Or this:
http://www.bmwmotorcycles.com/bikes/bike.jsp?b=f800st (Can be ordered
with low suspension).

J.
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

On Sep 14, 9:29 pm, Andy Burnett
wrote:
> Bob Nixon wrote in
> 50g2000hsm.googlegroups.com:
>
> > Andy. I can't think of the brand name but it's T2 ester based
> > synthetic @ $13/guart at cycle gear and was being consumed at about
> > 30-35:1 rate based of Gas and oil consumption.
>
> Sounds fine; both the oil type and ratio.
>
> > As far as the jetting goes when I
> > had the reeds replace to low rev carbon fiber models, the air screws
> > were opened up 1/2 turn per instructions. On the HS jets nothing has
> > changed since I bought the bike and both the piston's "right 1st", now
> > left aligned with the huge round exhaust port were not melted but
> > broken.
>
> It's starting to sound like high temperatures are the enemy here.
> They're getting high enough that preignition is a possibility,
> especially if the fuel octane is marginal. It's hard to get the gas
> these things were designed for today; what fuel are you running?

91 octane premium as the pipe CR pushed it up to >12:1. Other than
running 100+ octane race fual I do no what would help. The oil mixed
in twith the gas has a Dieseling effect and tends to making detonation
worse on a ttwo stroke.

When racing, some of us would run a hair rich on the pilots. This did
a
> couple of things. It would soften the initial hit when you crack the
> throttle on (without hurting drive off the corner) and would ensure that
> you got a little extra oil film on the cylinder walls for the run down
> the next straight. That isn't exactly the riding scenario you're in,
> but leaning out the air screws might not be so good, especially in
> higher temps. For sustained high speed, going a little rich on the
> mains might not hurt, at least to help establish if that's the problem.
> And it might actually be necessary, at least during the hot months. It
> will provide better lubrication and you should see slightly lower temps,
> all other things being equal.

I sed to be able to fnd main jets for there carbs but those days are
long gone. It's prolly a good thing I've nopt messing with the air
filter at all.

> Can you change mains on the RD without taking the float bowls off? The
> TZ had 17mm plugs in the bottom of the float bowls, so all you needed
> was a wrench and a slamm nut driver to change mains. Took about ten
> minutes and most of that was removing and replacing bodywork.

No Andy, your got to talke the float bowls off. Fairly east but
finding the jets is not spo easy

> > The heat gage runs close to 212 at over 100MPH and less the slower I
> > ride. When the piston broke both times the temp went down ro
> > 180=themostat setting, for the rest of the ride home.on the freeway at
> > about 70 at or near WOT. BTW, I use Engine-ICE=propalyne gycol in the
> > radiator.
>
> What ratio on coolant to water? If you've got 50:50 anti-freeze to
> water, I'd cut back on the anti-freeze and use more water. Maybe 1:2.
> It'll give a litte more effective cooling.

No propalene Gycol is not supposed to be mixed with water or anything
else.(engine ice); purple in color. It did bring the temp down about
10 degrees and has a bouling point over 300 degfees F for less
cavitation around the hot spots in the cylinder head.

> It makes sense of course that the engine cools off when one cylinder
> stops functioning, since you're producing half the BTUs into the same
> cooling system.

Agreed.

> > On your premix idea, Can I run say a 50:1 premix and leave the oil
> > pump working. It might smoke a bit but it would provide some safety
> > margin but only that might carbon up the power valve or other engine
> > parts.
>
> I don't see why you couldn't do that, though it would make gas stops a
> pain in the butt. If the other suggestions above make a difference, the
> bike would be easier to live with.

Right and I can live with the gas stops.

> One last idea: Have you tested for an air leak? The cases should hold
> 6 psi for a minute. If you have a leak, you've lost control over the
> mixture and are running leaner than you want to be.

I haven't tested for crankcase air leaks. Good idea & thanks.

> > As it was with the new softer reeds, I could crack the throttle in 6th
> > at 3000RPM and run up to redline with a 600cc type power band or maybe
> > a bit fatter in the middle. I'm at my wits end with this bike. I had
> > three RD's back in the 70's and never had any engine problems with
> > them.
>
> Sounds nice. Despite the grief, it sounds like this bike would be worth
> it if you can keep the pistons in one piece.

Yeah, I've just got to learn the little details about two stokes.
Thanks Andy.
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

On Sep 14, 5:28 pm, Vaughn wrote:
> On Sep 12, 1:32 am, Bob Nixon wrote:
>
> > And idea's or comments.
>
> > Bob Nixon
>
> Bob - sorry to hear of the extensive trouble on you smoker.
>
> There was some talk about Triumph Triples, and a lot of confusion.
> FWIW - here's the differences between the 675 Street Triple and the
> 1050 Speed Triple:
>
> 675 vs 1050 cc
> 107hp vs 132 hp
> 51 ftlbs vs 77 ftlbs (torque)
> 368lbs vs 416 lbs (dry weight)
> $7999 vs $9999
> 31.5 in vs 32.1 in (seat height)
> same colors

Vaighn, the Triumph dealer told me theres some kind of hold of the new
675 speed triple?

Bob Nixon.
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

On Sep 13, 7:23 pm, "TroytheTroll" wrote:
> >> I haven't ridden enough vtwins, but to date the sv650 has beat them all,
> >> vibration wise. Beat its big brother badly as well. No Ducks in my mental
> >> database though.
>
> > What about the Uly, as far as vibration is concerned?
>
> The bike vibrated like no tomorrow, but the handlebars! Zee Wur Nice!! The
> bike smoothed out once you revved it up a little, good enough anyway, but I
> am sensitive primarily on the grips. It actually passed my "grip test"
> making it only the second vtwin I've ridden which has done so.
>
> But saddle and tim keep talking up the Ducks, so I figure I gotta catch a
> demo ride sometime to see.

Gawd. Saddle and I agreeing on something. I gotta go take a shower,
now.
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

On Sep 13, 9:34 pm, Bob Nixon wrote:
> On Sep 11, 11:32 pm, Bob Nixon wrote:
>
> > And idea's or comments.
>
> > Bob Nixon
>
> As an update, I took off the left exhaust pipe this afternoon and the
> RZ's damage goes beyond a simple reed valve. The left piston is toast
> adjacent from the exhaust port. Not burned but scrapped and busted
> like the last time. Hopefully I'll get away with just a new piston
> this time as I could feel no irregularities in the surface of the
> cylinder like before. It's apparent that the RZ was never meant to be
> ridden that hard for more than just spurts. Pushing 90 at 100 degrees
> out for 25 miles and up to 120 on the big sweepers is not the little
> 350's forte. Tim used to race them, so I wonder what his experience
> was. Maybe he was running premix & at cooler temps.
>
> Bob Nixon.

I did not run pre-miax, although I certainly would have switched to it
had I raced it longer than one season. The auto oiling system, just
like carbs, can be adjusted to run richer or leaner. Also, iirc, that
you can put in different cams on the auto-piling pulley to richen the
thing up at WOT. Running synthetic 2-stroke oil at the same ratio as
dino oil SHOULD completely eradicate seizing problems, regardless of
speed and temperature. Certainly racing five races at Summit Point in
August temps of low 90's never harmed my old RZ350.
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

On Sep 16, 4:56 pm, "tomor...@erols.com" wrote:
> On Sep 13, 9:34 pm, Bob Nixon wrote:
>
>
>
>
>
> > On Sep 11, 11:32 pm, Bob Nixon wrote:
>
> > > And idea's or comments.
>
> > > Bob Nixon
>
> > As an update, I took off the left exhaust pipe this afternoon and the
> > RZ's damage goes beyond a simple reed valve. The left piston is toast
> > adjacent from the exhaust port. Not burned but scrapped and busted
> > like the last time. Hopefully I'll get away with just a new piston
> > this time as I could feel no irregularities in the surface of the
> > cylinder like before. It's apparent that the RZ was never meant to be
> > ridden that hard for more than just spurts. Pushing 90 at 100 degrees
> > out for 25 miles and up to 120 on the big sweepers is not the little
> > 350's forte. Tim used to race them, so I wonder what his experience
> > was. Maybe he was running premix & at cooler temps.
>
> > Bob Nixon.
>
> I did not run pre-miax, although I certainly would have switched to it
> had I raced it longer than one season. The auto oiling system, just
> like carbs, can be adjusted to run richer or leaner. Also, iirc, that
> you can put in different cams on the auto-piling pulley to richen the
> thing up at WOT. Running synthetic 2-stroke oil at the same ratio as
> dino oil SHOULD completely eradicate seizing problems, regardless of
> speed and temperature. Certainly racing five races at Summit Point in
> August temps of low 90's never harmed my old RZ350.- Hide quoted text -
>
> - Show quoted text -

Well then, other than the engine being 23 years old, it pulls like a
crazy up top (not indicating lean jetting) and the oil pump is alighed
and sending high grade synthetic in at a rate of 30-35:1 ratio. I've
heard of a common carb boot you can buy so that if one carb starves
momentarily you still have the other feeding both cylinders.

Also, you may or may not recall that the 1st failure was a fluke. With
the right cylinder actually cracking above the exhaust port (then
stuck out so the top ring hit it) and knocked the top of the piston
off near the exhaust port. This time it was the other piston & to date
I've seen no evidence of the cylinder cracking again, rather the top
of the piston gualling adjacent to the exhaust port.The plug looked
new except for being oil fouled this time. The bottom end looks brand
new as a bike with just over 7500 miles "NOW" on it should. As far as
the age goes I have no idea what negative effect that could have on
the top end of this engine. It's puzzling as I NEVER had any problems
with my 3 air cooled RD-350,400's. Then that was back in the late 70's
when they were near new as well but they got ridden hard, even drag
raced on multiple "grudge nights" @ Fremont DS in NORCAL.
BTW, I misspelled the coolent in my explanation to Andy Burnett. It's
"Engine Ice" which is mainly Propylene Glycol with a boiling temp >300
degrees and is not supposed to be mixed with water or anything else.

Bob Nixon.
 >> Stay informed about: Tired of RZ breaking at HS. Thinking about a brand new SV-.. 

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