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Old 03-06-2010, 02:03 PM   #3496
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absolutehobbyz.com has them in stock for very good price.
Nice web site
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Old 03-06-2010, 02:21 PM   #3497
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Hey guys. I'm needing to replace a set of crank bearings for an older .21 on-road novarossi competition 2000 engine.

Do you guys know of a place that has these bearings? i dont need anything special..just high grade steel will be fine.

the front bearing measures-
19mm x 7mm x 6mm (.748'' x .275'' x .235'')

the rear bearing is-
25mm x 13mm x 6mm (.985'' x .512'' x .235'')

is this a typical, easy to find size?
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Old 03-09-2010, 06:40 AM   #3498
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Hi guys,

Does the new .21 Flash Special have got "Tuned" version?or it's just "Special"
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Old 03-09-2010, 07:21 AM   #3499
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The new Flash "SPECIAL" comes in both versions, "TUNED" (modified) and "non Tuned" (stock).
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Old 03-09-2010, 09:35 AM   #3500
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Originally Posted by Turbo9000 View Post
Hey guys. I'm needing to replace a set of crank bearings for an older .21 on-road novarossi competition 2000 engine.

Do you guys know of a place that has these bearings? i dont need anything special..just high grade steel will be fine.

the front bearing measures-
19mm x 7mm x 6mm (.748'' x .275'' x .235'')

the rear bearing is-
25mm x 13mm x 6mm (.985'' x .512'' x .235'')

is this a typical, easy to find size?
go to www rc-bearings com

I have been ordering bearings from them, good prices, great service

Scott
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Old 03-09-2010, 11:09 AM   #3501
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Originally Posted by sdphilips View Post
go to www rc-bearings com

I have been ordering bearings from them, good prices, great service

Scott
Hey man, i ended up getting some from a-main actually. they arent genuine novarossi or anything, but they werent to bad of a price.

This motor needs to be repinched as well.. im thinking about sending the P&S to rayaracing. It seems like that guy knows what hes doing, so any of you guys use him?

Im going to replace the con-rod and wrist pin while im at it. whats the best place to get those as well?
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Old 03-11-2010, 03:22 AM   #3502
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The R7 rod is not so indestructible lol

damn!
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Old 03-11-2010, 07:26 AM   #3503
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The R7 rod is not so indestructible lol

damn!
rod bushing lost lubrication...You spun a bushing son !!! LOL J/K .. should use more oil in the fuel or run it richer that is a 100% lubrication related failure ....
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Old 03-11-2010, 07:51 AM   #3504
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Damn.... thats ugly failure...
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Old 03-11-2010, 08:10 AM   #3505
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rod bushing lost lubrication...You spun a bushing son !!! LOL J/K .. should use more oil in the fuel or run it richer that is a 100% lubrication related failure ....
Yes, I have to learn what "fast enough" is and stop turning that needle clockwise! haha, gladly the internals weren't destroyed except for a nick on the piston which I dremeled smooth. feels OK now, no way I am shelling out $250 for a new P/S for this engine! lol

(i'll stick to beating on my Gotech)
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Old 03-11-2010, 12:26 PM   #3506
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are most novarossi .21 rods interchangeable? do they share the same dimensions, ie, length, bushing I.D. etc ?

If i have an old novarossi on-road .21, would i be able to put a new rod in it?

I can get dimensions of my old con-rod.. if somebody has measurements of a newer rod so i can compare.. that would help me out a ton.
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Old 03-12-2010, 12:19 PM   #3507
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Originally Posted by fdjizm View Post
Yes, I have to learn what "fast enough" is and stop turning that needle clockwise! haha, gladly the internals weren't destroyed except for a nick on the piston which I dremeled smooth. feels OK now, no way I am shelling out $250 for a new P/S for this engine! lol

(i'll stick to beating on my Gotech)
what fuel do you use ? offroad fuel or onroad fuel ? as a general rule offroad fuels do not have enough lubrication for a high RPM onroad engine....
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Old 03-12-2010, 08:41 PM   #3508
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Maximo what fuel brand and what oil percentage do you recommend for off-road racing?
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Old 03-12-2010, 09:53 PM   #3509
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Originally Posted by Maximo View Post
what fuel do you use ? offroad fuel or onroad fuel ? as a general rule offroad fuels do not have enough lubrication for a high RPM onroad engine....
I have been using o'donnell 30% actually never heard of "off-road/on-road" fuel, care to elaborate?
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Old 03-14-2010, 07:07 AM   #3510
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I was wondering, Since RB's C10 (flasgship onroad engine) has the same specs as the 35 plus 21, and novarossi went back to the 35 plus 21 engine for the flash 21.
Does that mean that the 35 plus 21 is the optimal design?
9 ports, 14.5mm crank, 16.26 bore x 16.80 stroke.

Seems like they got it right with the 35+21 and don't know what to change?
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