First gear clunk?

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cyphecks
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#11 Unread post by cyphecks »

i just bought an 02 shadow ACE, and it does the same thing; its good to know its a standard operating noise.
Ethan

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#12 Unread post by BMK »

2006 Honda Shadow Aero here....also a noticable 'clunk' into 1st.
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#13 Unread post by lunchmeat »

Mine does this too.

A related question - when I first start the bike, I'll shift from N to first after letting it idle for a bit, and the bike will jump forward a tiny bit. Anyone else have this? Just like, a type of shock, I guess...I don't usually notice it after riding for a little while, I don't think. (If it does happen, it's not noticable.)
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Mistercory
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#14 Unread post by Mistercory »

2007 shadow vt750c2.
Clunks into 1st as well.
the feeling/sound turns me on

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#15 Unread post by Shorts »

lunchmeat wrote:Mine does this too.

A related question - when I first start the bike, I'll shift from N to first after letting it idle for a bit, and the bike will jump forward a tiny bit. Anyone else have this? Just like, a type of shock, I guess...I don't usually notice it after riding for a little while, I don't think. (If it does happen, it's not noticable.)

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Flak Monkey
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#16 Unread post by Flak Monkey »

Yeah, I get the same as lunchmeat, except my bike doesn't lurch it just gives a good shake (maybe I'm holding the front break?). Well, I guess this pretty much confirms the answer to the OP's question.
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#17 Unread post by BuzZz »

When the tranny is in neutral, only one of the two mating gearsets is spinning. The plate/oil drag is more than enough to turn the input shaft, but not the output shaft. Once you drop it into gear (any gear from a stop), the second gearset engages the first one and that clunk is the second shaft and gears matching the input speed from a rotational stop.

First gear is also a big, beefy, numerically high hunka steel, often with teeth and dogs cut for strength rather than shifting smoothness. So re-engaging first from second while moving makes a clunk because your slowing down the second shaft to match the input speed of the first, and re-engaging that big, crude gearset.
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#18 Unread post by -regr3t- »

I think ive got a pretty serious problem regarding this, sometimes downshifting into first my shift lever kind of bounces or vibrates and it sounds like its grinding before (bounce-bounce-bounce-bounce-bounce-CLUNK) it clunks into first, is my tranny gonna explode soon?

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#19 Unread post by Dichotomous »

-regr3t- wrote:I think ive got a pretty serious problem regarding this, sometimes downshifting into first my shift lever kind of bounces or vibrates and it sounds like its grinding before (bounce-bounce-bounce-bounce-bounce-CLUNK) it clunks into first, is my tranny gonna explode soon?
you're tranny wont explode, but you will wear down those gears. as I was told, shift it like you mean it. snap that lever hard a fast when going 2nd to 1st. mine will bounce and grind if I wuss out on the lever. snap it hard and it will thunk, and then you are golden, or you could shift in a lower RPM.
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#20 Unread post by wiggumon »

flw wrote:Mine does the clunk as well unless I'm going very slow or stopped.
I get the exact same results from my 2006 Vulcan 500.
2006 Kawasaki Vulcan 500 LTD

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