help whats up with new chain

Just put in a new renthal 525 chain on my 92 750, had to get a master
link from the bike shop as I have no tool to press on the one renthal
gave me. I also replaced the front sprocket which was slightly larger
in circumferance but 2 more teeth. I rolled down a hill with no
problem but when I put it in gear, I heard some clink and clank than
the chain was on the ground. Shit, as I'm writing this I realized I
didn't tighten the chain tensioner on the swing arm. I guess I was too
anxious to get goin, that'll learn me...

 

do you think it was too loose or too tight? just curious...

 

I think it pulled the tire in than got bound up, probably too loose

 

Ye Gods. Up two teeth on the gearbox sprocket? It won't pull the skin
off curdled coffee now.

 

(The Older Gentleman) wrote in

I would imagine that if it is low geared like most, it won`t be as bad as
that. I almost always jump up one tooth on every thing but a racer for
easier revs at speed anyway. haven`t had one be too over geared yet.
Usually gives some milage improvement also. KB

--- news://freenews.netfront.net/ - complaints: ---

 

Under power, the slack is in the bottom run of chain, but when
coasting, the slack is in the top run of chain so it can come off the
front sprocket.

I've only had the chain come off the sprockets twice in 50 years of
riding, once was in a motocross race when I was slowing down for the
checkered flag and the chain slack (normal on a motocrosser) shifted
from bottom to top...

(Special message for Mr. Neil J. Murray, editor of Foodnews follows
below

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**** you, limey cocksucker.

 

The usual rule of thumb for Japanese motorcycles is to install a front
sprocket with *one* more tooth or a rear sprocket with *three* less
teeth.

But Ducatis tend to have rather tall first gears so the transmission
will be more useful on the racetrack, so the general rule of adding
one tooth to the front sprocket doesn't apply.

(Special message for Mr. Neil J. Murray of Foodnews follows below

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**** you, you obnoxious Limey cocksucker!

 

It might, yes, on some low geared bikes, but a 1992 750 (whatever it is)
is unlikely to be that.

One tooth, yeah, done it myself. Two teeth? Geddoudahere.

 

The problem is that aerodynamic drag is a velocity squared factor.
Aerodynamic drag is four times as great at 80 mph as it is a 40 mph,
so EIGHT times as much horsepower is required to ride at the favored
highway speed.
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(Special message for Mr. Neil J. Murray of Foodnews follows below


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**** you, you obnoxious Limey cocksucker!

 

Duh.

 

I've done it twice. Once, 30 years ago, when I bought a CB750F - the
first slab-sided 'Super Sport' SOHC CB750. Horrible thing. A really,
really nasty underdeveloped bike.

Anyway, it would spin straight to the redline in top, and I discovered
Honda had actually geared it down for acceleration. The gearbox sprocket
from a K4 had one more tooth, and made the bike far more pleasant to
ride and aided mpg.

I did the same thing with my late-1980s Yamaha RD350F2 power-valve. That
would also spin to the redline in top. Going up one tooth on the gearbox
sprocket did, in fact, increase the top speed (ISTR Performance Bikes
doing the same mod and getting 127mph out of the thing!) but it changed
the 'dead zone' (where the power valve couldn't decide whether to open
or not) from an indicated 70 mph to an indicated 75-80, which made the
thing, on UK roads, a PITA.

I put it back to stock. I've still got that extra sprocket in a box
somewhere.

My Ducati (currently awaiting fuel tank surgery) is overgeared in top -
it would theoretically redline at 150 in top. I've often thought of
gearing it down to make it snappier, but I actually like the loping
V-twin gait, so I've left the gearing stock.

 

**** you, you obnoxious Limey cocksucker!

 

A slight attribution mix-up there

 

Again, **** you, you obnoxious Limey cocksucker!

 

SNIP

This was a good thread until Krusty the Chickenhawk showed his ass...

Your ignorance is already well know moron...

 

wrong

I don't think so, actually. Not all of it.

Duh

 

So, I got the axle aligned and tightened, chain back on with just an
inch or so of slack on the bottom side, put the clip on the link, and
again, a little pressure on the chain and plop, on the ground. The
clip was a little bent, wtf?

 

It sounds like you have a serious *sprocket* misalignment problem.

Maybe you installed one of the axle spacers in the wrong position?

A special message for Neil Murray follows:

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**** off, you obnoxious Limey cocksucker!

 

Nope you are wrong, dead wrong. But knowing as I do that you know
nothing about motorcycles...it's not surprising.

 

Why don't you go tug on a trucker's dick?