Twitch when shifting into first.

[YoungPUP]

Ok my 99 Std twitches when shifting into first. Nothing terrible, don't even need the brake to hold against it. Almost like a hard shift with the clutch not being entirely disengaged. Its always done it since I bought it, and its only got 18345 miles on it. Thoughts?

[Toledo Mark]

Mine does it also but usually only when cold and the RPM's are up.

[jer0177]

They all do.

The transmissions in the GL1500 are what's called "Constant Mesh".  All the gears for all your, well, gears, are always in contact, and the shift drum moves shift forks to engage the 'dogs' on the gear you're selecting, or sliding the gear itself onto a splined portion of the input or output shaft, transferring power from the crankshaft to the driveshaft.

[YoungPUP]

Thanks. Esp for the pictures....

[Chrisj CMA]

yup...pretty normal

[CajunRider]

More-so to do with the wet clutch instead of constant mesh. 

Hop on ANY bike with a wet clutch (most noticeable with a cold engine) and it'll hop the same way.  Do the same on a bike with a dry clutch (maybe a BMW R1200 something-or-other) and you won't get that hop. 

Dry clutches fully disengage and have no oil moving around between the plates causing an ever so slight friction.  A wet clutch, while fully disengaged, still have oil moving around between the plates causing a very small amount of friction (fluid dynamics kind-a stuff). 

SHORT answer... it's normal.  You have nothing to worry about. 

You should see the hop you get from a cold KLR650 engine!!!    

[Ricky-D]

Twitch, that's interesting, in a non critical comment, while I would probably characterize the same as a lurch.

More times than not, when there is (differences of opinions) on this forum, and the temperatures start to rise, the crux of the matter is: while the subject is the same, the words we use to describe the matters of discussion sure can run the gamut.

Just goes to show ya'.

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