yamahaman244 Posted June 9, 2010 Report Share Posted June 9, 2010 hey guys im wondering what is the max rpm of a stock banshee or a banshee with just pipes and filter or something like that jw what the max rpm is thanks Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted June 9, 2010 Author Report Share Posted June 9, 2010 hey guys im wondering what is the max rpm of a stock banshee or a banshee with just pipes and filter or something like that jw what the max rpm is thanks anybody Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted June 9, 2010 Author Report Share Posted June 9, 2010 anybody ?????????????? Quote Link to comment Share on other sites More sharing options...
No Limit Powersports Posted June 9, 2010 Report Share Posted June 9, 2010 There really is a million variables that will depect what rpm a motor can rev to. Pipe, porting, compression ect ect... Quote Link to comment Share on other sites More sharing options...
toytech Posted June 9, 2010 Report Share Posted June 9, 2010 There really is a million variables that will depect what rpm a motor can rev to. Pipe, porting, compression ect ect... I think he wants to know what the cdi limits rpm at? Quote Link to comment Share on other sites More sharing options...
Scotty Posted June 9, 2010 Report Share Posted June 9, 2010 http://www.dfn.com/benkaren/elecfaq.html Question 14... Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted June 10, 2010 Author Report Share Posted June 10, 2010 http://www.dfn.com/benkaren/elecfaq.html Question 14... i just want to know like a stock banshee what are the max rpm of a totally stock banshee and then one with just pipes Quote Link to comment Share on other sites More sharing options...
srp Posted June 10, 2010 Report Share Posted June 10, 2010 i just want to know like a stock banshee what are the max rpm of a totally stock banshee and then one with just pipes Piston speed dictates maximum RPM, maximum safe RPM is 4000 feet per minute, absolute max is 5000 feet per minute. Fuel,Air/fuel ratio,compression,exhaust port duration,tuned expansion chamber length,baffle angle and stinger back pressure will dictate what peaking Rpm you actually get from your motor, just as Andy said lots of variables. Lonnie at Sandtrax's said stock ignitions seem to start dropping cylinders at a certain RPM. I would like to know if anybody has experienced this and at what RPM. Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted June 10, 2010 Author Report Share Posted June 10, 2010 Piston speed dictates maximum RPM, maximum safe RPM is 4000 feet per minute, absolute max is 5000 feet per minute. Fuel,Air/fuel ratio,compression,exhaust port duration,tuned expansion chamber length,baffle angle and stinger back pressure will dictate what peaking Rpm you actually get from your motor, just as Andy said lots of variables. Lonnie at Sandtrax's said stock ignitions seem to start dropping cylinders at a certain RPM. I would like to know if anybody has experienced this and at what RPM. allright i know that it can be differant what is the average then or a estmiate on what they are 9000?? Quote Link to comment Share on other sites More sharing options...
camatv Posted June 10, 2010 Report Share Posted June 10, 2010 a bike will make power up to a certain rpm thats useable power or "powerband" then they will usually start to fall off OR overrev some bikes can overrev for a very long time they wont make anymore hp and can loose some but you can let them hang out for a lil while or tip out a top gear if it can pull it. i have heard that the old tz's would pull power up to around 12,000 and if you shut the pv's off they would overrev to the 18,000 rpm range !! stocker's i think are around 8500-9000 tops and modded can go as high as 13,000+ in hp. but rpm stands for: Ruins Peoples Motors i dont think the stock CDI has a rev limit it may have a electrical limit that is it just cannot process past say 13,500? i know i have reved my stockers into 11,000 on the dyno's under power. never checked my lil 350 but it also had a dyna and nology set up, it did feel like it just would never stop revving.. ( with shear pipes) Quote Link to comment Share on other sites More sharing options...
toytech Posted June 11, 2010 Report Share Posted June 11, 2010 a bike will make power up to a certain rpm thats useable power or "powerband" then they will usually start to fall off OR overrev some bikes can overrev for a very long time they wont make anymore hp and can loose some but you can let them hang out for a lil while or tip out a top gear if it can pull it. i have heard that the old tz's would pull power up to around 12,000 and if you shut the pv's off they would overrev to the 18,000 rpm range !! stocker's i think are around 8500-9000 tops and modded can go as high as 13,000+ in hp. but rpm stands for: Ruins Peoples Motors i dont think the stock CDI has a rev limit it may have a electrical limit that is it just cannot process past say 13,500? i know i have reved my stockers into 11,000 on the dyno's under power. never checked my lil 350 but it also had a dyna and nology set up, it did feel like it just would never stop revving.. ( with shear pipes) I think you answered his question very well. thank you I was also wondering this to Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted June 11, 2010 Report Share Posted June 11, 2010 For stock your probably not going to build much power over 7500-8000 RPM. My Patriot Racing drag ported 4 mill stock cylinder peaked out at around 9200 RPM. That is according to the builder, Dan at Patriot Racing. Quote Link to comment Share on other sites More sharing options...
srp Posted June 11, 2010 Report Share Posted June 11, 2010 allright i know that it can be differant what is the average then or a estmiate on what they are 9000?? (9000 Rpm) With a 54 stroke its 3189 FPM,58 stroke-3425 FPM,61 stroke-3602 FPM,64 stroke-3780 FPM,68 stroke-4016 FPM. All are safe RPMs. 11300 RPM is 4004 FPM on a stock stroke engine and 14100 RPM is 4996 FPM on a stock stroke. As you can see bigger strokes will raise the piston speed. You would need to have some kind of road racing pipe and porting to get anywhere near redline. Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted June 11, 2010 Author Report Share Posted June 11, 2010 (9000 Rpm) With a 54 stroke its 3189 FPM,58 stroke-3425 FPM,61 stroke-3602 FPM,64 stroke-3780 FPM,68 stroke-4016 FPM. All are safe RPMs. 11300 RPM is 4004 FPM on a stock stroke engine and 14100 RPM is 4996 FPM on a stock stroke. As you can see bigger strokes will raise the piston speed. You would need to have some kind of road racing pipe and porting to get anywhere near redline. allright thanks you ansered my qustion i was just comparing like what some 4 strokes will rev out to so by modded do you mean like ported and all that or just pipes and some other stuff and do you guys know what most like 450s rev out for rpms Quote Link to comment Share on other sites More sharing options...
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