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x over of 2nd and 3rd gears in cb72

Clutch, Transmission, Drive Chain, Sprockets
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gruzzi
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Posts: 3
Joined: Sat Oct 25, 2008 7:30 pm

x over of 2nd and 3rd gears in cb72

Post by gruzzi » Sun Oct 26, 2008 3:46 am

Gday
Could anybody tell me where I could get some info on crossing over the 2nd and 3ed gears on a cb72
Thankyou

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davomoto
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Posts: 2508
Joined: Sat Nov 18, 2006 7:36 pm
Location: Marin County CA

Post by davomoto » Sun Oct 26, 2008 11:49 am

Try this link, or search this site. http://www.honda305.com/forums/viewtopic.php?t=1937

davomoto

Phil-UK
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Posts: 229
Joined: Thu Oct 19, 2006 7:04 am
Location: ENGLAND

Post by Phil-UK » Mon Oct 27, 2008 9:31 am

Hi Gruzzi

Not sure I'd bother .. see Bill Silver's guide for comments which I can back up.

I did this on mine when I restored it and while it does bring the lower gears together it also
made the gap between 3rd and 4th too big.
Not much of an issue if your taking it easy but trying to keep up with an RD350 on the road
or a Suzuki Super Six on a track parade I found I was taking it to 8000+ rpm in 3rd and changing
up to top only for the engine to drop to @6000 rpm and just out of the power band.
Next time I have the engine out I will probably swap it back to standard.

I think its probably better with a CB77 ..

just my opinion,

Phil

LOUD MOUSE
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Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Mon Oct 27, 2008 9:49 am

I must add my part to this. I ride a 1963 Super Hawk which I rode before I rebuilt the engine and "X'ed" the gears. My experience is the engine RPM's are much better now than before and I ride in the Hill Country of TEXAS. ..................lm
Phil-UK wrote:Hi Gruzzi

Not sure I'd bother .. see Bill Silver's guide for comments which I can back up.

I did this on mine when I restored it and while it does bring the lower gears together it also
made the gap between 3rd and 4th too big.
Not much of an issue if your taking it easy but trying to keep up with an RD350 on the road
or a Suzuki Super Six on a track parade I found I was taking it to 8000+ rpm in 3rd and changing
up to top only for the engine to drop to @6000 rpm and just out of the power band.
Next time I have the engine out I will probably swap it back to standard.

I think its probably better with a CB77 ..

just my opinion,

Phil
RIDE IT DON'T HIDE IT!

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