magley64 Posted June 4, 2009 Report Share Posted June 4, 2009 the VTwin is a "high revving" engine... not true, low displacement I-4's are high revving (redline around 15,000 rpm). your vtwin is built for torque at low revvs Quote Link to comment Share on other sites More sharing options...
krzwhtman Posted June 4, 2009 Report Share Posted June 4, 2009 not true, low displacement I-4's are high revving (redline around 15,000 rpm). your vtwin is built for torque at low revvsmost 600.s are around 1300 , some litre bikes 1100 Quote Link to comment Share on other sites More sharing options...
V4junkie Posted June 4, 2009 Report Share Posted June 4, 2009 most 600.s are around 1300 , some litre bikes 1100Maybe in the 90's bro. Quote Link to comment Share on other sites More sharing options...
krzwhtman Posted June 4, 2009 Report Share Posted June 4, 2009 (edited) lol i ride a 01 busa all the time. its 1100 . and the 90s would throw the first jump in the modern bike era into that category , look at a 98(11750) R1 ( first new era bike)and 09(believe its near 13000) , same with 99 Busa and 09 . you might have some HP and BHP jumps but not to much in revs. also think i remember 04 r6 near 13000 Edited June 4, 2009 by krzwhtman Quote Link to comment Share on other sites More sharing options...
krzwhtman Posted June 4, 2009 Report Share Posted June 4, 2009 (edited) metalurgy sets the rev limit , once metal starts moving at more then 4,000 feet per secound it breaks down. its all about the stroke.to add bigger the motor longer the stroke .... bigger the motor less revs it will take to hit the magic 4,000 fps number.one reason harleys will never get up there , they have strokes comparative to Cars. and can never hit those revs till a redesign. Edited June 4, 2009 by krzwhtman Quote Link to comment Share on other sites More sharing options...
V4junkie Posted June 4, 2009 Report Share Posted June 4, 2009 Lately 600's peak power is about 13k rpm but w/ overrev the limiter doesn't kick in until about 15k. 1000's main power is about 11k but kick in about 13k. We are talking about limiters right? Quote Link to comment Share on other sites More sharing options...
magley64 Posted June 4, 2009 Report Share Posted June 4, 2009 most 600.s are around 1300 , some litre bikes 1100IIRC redline for:r6 is 16,200 rpm cbr 600 is 15,000 rpmzzr 600 14,500gsxr 600 16,000 Quote Link to comment Share on other sites More sharing options...
RRider Posted June 4, 2009 Report Share Posted June 4, 2009 when the bike starts popping....its time to shift!j/k Quote Link to comment Share on other sites More sharing options...
Ryan_c_F Posted July 18, 2009 Report Share Posted July 18, 2009 According to a website I looked at (all internets is true) the ideal RPM for my bike is around 2500 to 3500. Using gearingcommander.com I find that using 2500-3500 as the ideal RPM I should be shift around the following speeds... but it sounds like the bike is whining when I do this.... and if I let off the throttle the bike lurches... so I have to keep on the throttleTry shifting faster?I've got a high-revving V-Twin in my Suzuki that sounds remarkably similar to yours. I found my "ideal" shift point by letting it ride up in revs at a medium pace, until it "needs" more gas to shift. I figure that's where the "cruising revs" expire and where the "powerband revs" start.I don't know how good your transmission is, but I shift very quickly and my engine only drops about 500-750 revs when I do. Takes the lurch out of it. Quote Link to comment Share on other sites More sharing options...
Ron Burgundy Posted July 18, 2009 Report Share Posted July 18, 2009 http://www.youtube.com/watch?v=ktRsl2hAPhY Quote Link to comment Share on other sites More sharing options...
Cougar Posted July 21, 2009 Report Share Posted July 21, 2009 if I were I'd take a nice long ride in the country with few cars so you can experiment it each gear. There should be a point between each gear set that you can shift almost seamlessly. Have you done any clutchless shifting? Key points here are learn to shift FAST, not necessarily clutching fast but letting off the throttle just right and clicking up a gear without instantly adding or subtracting power from the next gear. Think of it like... how could I shift the smoothest if i didnt have a clutch. 1st to 2nd is obviously harder due to the big ratio change but all others you should be able to just give a lil flick of the throttle to drop load enough to enter the next gear with neutral load. If it takes more than a lil flick, you're not in a good rpm to shift. It should be pretty clear if you're too high or too low based on the amout the bike lurches forward or back the instant it takes control.This isnt useful for our typical, vroom click vroom click vroom riding. But I think you're trying to find a nice peaceful medium for daily riding and this is how i do it. You say you're concerned you're shifting too low... if you're transmission is clunking hard on the shift, your revs are WAY too low. Quote Link to comment Share on other sites More sharing options...
Likwid Posted July 21, 2009 Author Report Share Posted July 21, 2009 if I were I'd take a nice long ride in the country with few cars so you can experiment it each gear. There should be a point between each gear set that you can shift almost seamlessly. Have you done any clutchless shifting? Key points here are learn to shift FAST, not necessarily clutching fast but letting off the throttle just right and clicking up a gear without instantly adding or subtracting power from the next gear. Think of it like... how could I shift the smoothest if i didnt have a clutch. 1st to 2nd is obviously harder due to the big ratio change but all others you should be able to just give a lil flick of the throttle to drop load enough to enter the next gear with neutral load. If it takes more than a lil flick, you're not in a good rpm to shift. It should be pretty clear if you're too high or too low based on the amout the bike lurches forward or back the instant it takes control.This isnt useful for our typical, vroom click vroom click vroom riding. But I think you're trying to find a nice peaceful medium for daily riding and this is how i do it. You say you're concerned you're shifting too low... if you're transmission is clunking hard on the shift, your revs are WAY too low.Yah just a few miles under the belt since I posted this.I went on a poker run with JRM, R1Crusher, Bonkers and Swing`R... I'd never hit the rev limiter before riding with these guys.I think I can safely say I know the extremes of when I have to shift... Quote Link to comment Share on other sites More sharing options...
palandor Posted July 22, 2009 Report Share Posted July 22, 2009 I don't have a tach either... Someone on the yahoo! EN500 group did the math on gear ratios, wheel size, and rpms and has an Excel spreadsheet... PM me and I can email it to you as it's got pluggable cells that you can insert your own values. Quote Link to comment Share on other sites More sharing options...
RVTPilot Posted July 22, 2009 Report Share Posted July 22, 2009 not true, low displacement I-4's are high revving (redline around 15,000 rpm). your vtwin is built for torque at low revvsQFT. Likwid, i can tell you that on the RC, unless I am up on the slab and crusing, I am hardly ever in 6th, or even 5th when buzzing around town. I like to keep it where I am moving along comfortably just at the bottom of where my powerband picks up. That way I am a wrist twitch from being in the middle of where my power is, for those unforseen occasions. As everyone here ha said, you will just get used to it and find a place with the engine that works. It's a lot like masturbating, only more expensive when things blow. But I think there are a couple guys around here that can fix a bike. Quote Link to comment Share on other sites More sharing options...
Likwid Posted July 22, 2009 Author Report Share Posted July 22, 2009 LOL, thanks RVT Yah, I've gotten pretty comfortable, I still tend to shift high but that's only in my neighborhood, I know the dangers of it but I'm ok with that. I appreciate Palandor, I use GearingCommander.com to get a sense for where the rev limiter is going to hit, as I mentioned, I never really hit the rev limiter until last weekend... then I hit it in every gear trying to keep up Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.