True...unless you have the trans gears cut to allow upshifting under full power...normally called an auto.
I run a 1-2-3 auto....on the fast bike...(not for street riding though)
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True...unless you have the trans gears cut to allow upshifting under full power...normally called an auto.
I run a 1-2-3 auto....on the fast bike...(not for street riding though)
O
Old Colt
Guest
I am old knee dragger, we did not do those things. We spent our time undercutting dogs so they would not come out.
The dogs are cut to allow power shifting. A tranny that is so modified is also only able to accept loading while under power. The shift forks will bend or break if the throttle is rolled off.
As far as clutchless shifting, if there is no load through the gears, it can be done cleanly with no damage without regard for engine RPM.. It's a lot easier for most to upshift after little practice. Downshifting is much harder.
the beauty of synchro-mesh transmissions "floating" thru the gears by matching rpms' and clicking up and down.
takes practice and the bike needs to be in good tune .
now the actual "auto" is a racing cut on the front and back sides of the dogs along with spring loading on the shift forks. it engages 2 gears at once and the lower gear popping out allowing a full power shift and not unloading or interrupting the power or ignition . it is complicated but the suzuki gs 1000 - 1100 is really easy to do compared to kawasaki.
air shifter systems have an ignition stutter at .050 of a second to unload pressure and shift
under cutting transmission dogs makes them push together -a little not a lot- 7 -10 degree cut matched to mate gear sets #2 gear #3 gear
a pro cut transmission gear has half the dogs removed for ultra high rpm shifts. 2 gear 3 gear sometimes 4 gear
takes practice and the bike needs to be in good tune .
now the actual "auto" is a racing cut on the front and back sides of the dogs along with spring loading on the shift forks. it engages 2 gears at once and the lower gear popping out allowing a full power shift and not unloading or interrupting the power or ignition . it is complicated but the suzuki gs 1000 - 1100 is really easy to do compared to kawasaki.
air shifter systems have an ignition stutter at .050 of a second to unload pressure and shift
under cutting transmission dogs makes them push together -a little not a lot- 7 -10 degree cut matched to mate gear sets #2 gear #3 gear
a pro cut transmission gear has half the dogs removed for ultra high rpm shifts. 2 gear 3 gear sometimes 4 gear
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Rolling off is really not a problem if the trans is set up well....
I've backed off mine many times without ever bending a shift fork, so have others I know...
The big thing it to not slam the throttle closed...(which is sometimes hard to remember if your shootin' towards the wall or the crossin' the center line..
)
G
Grandpa
Guest
One reason for my high-mileage GK, over 132,000 miles as of a month ago: I always use the clutch when shifting, up or down. Neither clutch nor engine has ever been touched.
I don't recommend clutchless shifting for anyone. Just use the clutch, keeping cable well lubed and in top shape, and it will not break. Last time a clutch cable broke on me was 1988, on an 850G.
I don't care if you think I'm an old fuddy-duddy for saying this. I am, and proud of it. Use your clutch when you shift.
I don't recommend clutchless shifting for anyone. Just use the clutch, keeping cable well lubed and in top shape, and it will not break. Last time a clutch cable broke on me was 1988, on an 850G.
I don't care if you think I'm an old fuddy-duddy for saying this. I am, and proud of it. Use your clutch when you shift.
D
don
Guest
Being an old stock car racer, I have all kinds of experience with this. We used motorcycle engines in some sprint cars we ran. The only thing you used the clutch for is to start the thing back up and get going after the track safety crew flipped you back on your wheels.
And yes, these guys are correct. Any motorcycle trans will shift efortlessly without the clutch. Motorcycle trans are sequential trans. Straight cut gears tha wil fall into place when under no load.
Just like these gus are saying, simply hold light pressure on the shifter and unload the trans with the throttle.
And yes, these guys are correct. Any motorcycle trans will shift efortlessly without the clutch. Motorcycle trans are sequential trans. Straight cut gears tha wil fall into place when under no load.
Just like these gus are saying, simply hold light pressure on the shifter and unload the trans with the throttle.
The answer to all of this debate is to buy a CZ (my avatar - a Type 486). Cunning engineers those old eastern bloc Czechs - shift the gear lever and it disengages the clutch by means of a little cam on the end of the gear change shaft.
Great party trick - amaze your friends; engage first gear and pull away nice and smoothly without using the clutch lever (you can use the gear lever as a clutch once you know how it works).
Great party trick - amaze your friends; engage first gear and pull away nice and smoothly without using the clutch lever (you can use the gear lever as a clutch once you know how it works).
O
Old Colt
Guest
I found that to be one of the most magnificent ideas for hands up starts. Of course I was on a Bultaco following them off the line.