Re: [ST] Sprockets and Chain Maintenance

["Louis Jiannine" <LouJ9@xxxxxxxxxx>]

I still have stock sprockets on the ST so I am talking theoretically here.
There are some possible negative effects of going down 2 teeth on the
countershaft.

The tighter turn might make for more rapid chain wear.
The adjustment that is necessary to take up the slack will alter your rear
axle height.
(?The smaller front sprocket may make the chain accelerate the wear on the
pad on top of the swingarm?)

I know it involves a little extra cost, but why not go down one tooth in
front and up one or two teeth in back?  Stock chain would be the correct
length and the above consequences would be minimized or avoided.

Just a thought....not a criticism of anyone's choice.

Lou



- ----- Original Message -----
From: Brad Applegate <applebc@xxxxxxxxxxx>
To: <ST@xxxxxxxxxxxxxx>
Sent: Friday, October 18, 2002 3:08 PM
Subject: RE: [ST] Sprockets and Chain Maintenance


>   I changed to a 17t sprocket on my '00 ST last summer and haven't
> looked back since.  I have taken a couple 1200 mile roundtrips in that
> time and can still get HIGH 40's(48 or 49) for my MPG when running 75-80
> constantly between tanks.  The hightest I got once was 52MPG on a run to
> MI once.  Just running around town or to and from work I reguarly get
> 46MPG, so it's still around 200 miles before a fill up, YMMV.
>   As for the *GRIN* factor there is no comparison between then and now,
> even with 17000 miles since the change.  I looked into both the 17t and
> 18t for mine, and decided that a total of ~500rpm difference between 19
> and 17 was small enough that I wouldn't worry about anything else.
> To each his/her own though it comes down to you in the end.
>
> Brad "Deviled Dawg" Applegate
> '00 Blue ST
> TSRA# 227
>
> "Horsepower is the measure of how hard you hit the wall, Torque is how
> far you carry it afterwards"
>
> -----Original Message-----
> From: owner-st@xxxxxxxxxx [mailto:owner-st@xxxxxxxxxx] On Behalf Of Brad
> Turner
> Sent: Friday, October 18, 2002 11:18 AM
> To: 'colt4530@xxxxxxxxxxx '; 'RS@xxxxxxxxxxxxxx '
> Subject: RE: [ST] Sprockets and Chain Maintenance
>
>
> John,
>
> Here's the quick math
>
> 43/19=2.26
> 43/17=2.53
>
> 2.53-2.26=.27
>
> The way I figure it is a little under a 10% change (.27 delta from the
> 2.26 ratio baseline) so do you want that much change? It seems like a
> pretty healthy bump to me. You also need to consider what it will do to
> your cruising speed RPM (your RPMs will raise by the same %). To put it
> into perspective you'd need to go up 5 teeth on the rear to a 48/19 to
> achieve the same ratio change by altering the rear sprocket. This is not
> exactly a subtle change. I've never played with the ST's gearing but I
> have done it with other bikes but never this much.
> ....
> later,
> -brad-
>
>
>
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