Terrible Neutral to 1st shifts - Wrist Twisters
 
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post #1 of 12 Old 05-06-2006, 07:08 PM Thread Starter
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Terrible Neutral to 1st shifts

My bike sounds like it is going to spread tranny pieces all over when going from neutral to 1st. Is this the nature of this machine?--IE start bike in neutral, downshift to 1st-CLUNK, ride-downshift through all gears then to neutral, stretch, go back into gear--CRUNCH. I am not reving it before hand either. 5700 miles with GN4 since new.

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post #2 of 12 Old 05-06-2006, 07:13 PM
 
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chain tension. driveline lash can make it really clunky and clattery

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post #3 of 12 Old 05-06-2006, 07:45 PM
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Try changing your oil?

post #4 of 12 Old 05-06-2006, 07:55 PM Thread Starter
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Oil is fresh, I will take a look at the chain tension.

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post #5 of 12 Old 05-06-2006, 09:14 PM
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My ZX10R, my 929 and my Superhawk all did that. Bugged the crap out of me until I stopped carring about it.

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post #6 of 12 Old 05-07-2006, 06:03 AM
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The Clunk you hear has been a trait with motorcycle engines for decades. As long as it is a CLUNK and not a grind don't worry about it.

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post #7 of 12 Old 05-07-2006, 06:48 AM
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I've noticed this on both the Honda street bikes that I've owned. My Magna did it really bad. Shifting was fine and it didn't grind, it was just a "clunk" when going to first. The 919 does it but not as badly as my Magna. I don't remember either of the Suzuki's (Katana, SV650) that I've owned doing it. I figured it's just a Honda thing.

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post #8 of 12 Old 05-07-2006, 01:31 PM
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Downshift all the way down to first Before you stop...Then click up into neutral .The clunk will still be there but not as bad.

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post #9 of 12 Old 05-07-2006, 03:51 PM Thread Starter
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I always do and said so in my post. It still does it.

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post #10 of 12 Old 05-07-2006, 05:48 PM
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Yep,I just skimmed it...Sorry

Check out the other Downshifting Issue thread

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post #11 of 12 Old 05-08-2006, 07:48 AM
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Motorcycle transmissions have the pairs of gears always in engagement (constant mesh), and use a sliding dog between the pairs of gears that locks each pair of gears onto the output shaft. The output shaft is spinning at around 500rpm when at a stop so the clunk you hear are the gears engaging the output shaft and metal to metal enagagement at 500rpm resounds in your "thunk"

(God I hope I'm right on this one )

Someone please vindicate this for me, it's been a lonnnggggg w/e.




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post #12 of 12 Old 05-10-2006, 09:19 AM
 
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When I first got my 919 the previous owner had turned the idle up a bit higher than I like it. The extra revs did produce a rather abrupt clunk when dropped into gear. Once I set the idle back down to reasonable levels the clunk and lurch pretty much mellowed out. I suspect the idle had been turned up to compensate a newer rider from stalling the engine due to the lack of flywheel effect. I like the more mellow engagement of the slower idle.

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