Posted by Ken Abrams on April 17, 2007, 6:34 pm
> So now I have to get a larger sprocket for off road and a smaller one
> for highway. I mean, it's ok the way it is but it could have been just a
> little better.
Not familiar with your particular model of bike but in many cases it would
be quicker, easier and cheaper to change the front sprocket.....up one
tooth. Often there is enough adjustment available so that you don't have to
change the chain either.
Posted by Silly Old Bugger on April 17, 2007, 10:22 am
> Mark Olson wrote:
>> Broderick Crawford wrote:
>>> I'm looking at changing my rear sprocket to increase my road
>>> speed and
>>> decrease engine rev at highway speeds. I currently have a 428
>>> chain with
>>> a 50 tooth sprocket. I am looking at a 428/40 sprocket. What
>>> speed
>>> change can I expect with 10 less teeth on the rear? Will there
>>> be a
>>> noticeable change or should I go to a 30 tooth sprocket? Anybody
>>> tried
>>> this?
>>
>> You're probably not going to improve the TW200's "road speed"
>> much by
>> fitting a different sprocket.
>>
>> You don't also happen to own a Honda 350 or 360, do you?
>>
>> If you *must* experiment with sprockets, change by a smaller
>> number of
>> teeth, going from a 50 tooth to a 40 tooth rear will make your
>> top
>> gear useless. Don't even think about putting a 30 tooth rear on
>> there.
>>
> Well, they sell a 49, 48, 47, 46 etc sprocket. Does one tooth
> make that
> much of a difference? I'll search the web and try to find out how
> much
> this changes the gearing ratio.
With the same chain pitch, a 40t vs a 50t sprocket will give you a
20% change in ratio.
Not something I would recommend either.
To calculate the gearing ratio change for various sprockets, divide
the original (50t) by the size you wish to try. e.g. 49t = 2%, 48t
= 4%, 45t = 10% ..... etc.
regards
S.O.B
Posted by Broderick Crawford on April 17, 2007, 10:46 am
Silly Old Bugger wrote:
>> Mark Olson wrote:
>>> Broderick Crawford wrote:
>>>> I'm looking at changing my rear sprocket to increase my road
>>>> speed and
>>>> decrease engine rev at highway speeds. I currently have a 428
>>>> chain with
>>>> a 50 tooth sprocket. I am looking at a 428/40 sprocket. What
>>>> speed
>>>> change can I expect with 10 less teeth on the rear? Will there
>>>> be a
>>>> noticeable change or should I go to a 30 tooth sprocket? Anybody
>>>> tried
>>>> this?
>>> You're probably not going to improve the TW200's "road speed"
>>> much by
>>> fitting a different sprocket.
>>>
>>> You don't also happen to own a Honda 350 or 360, do you?
>>>
>>> If you *must* experiment with sprockets, change by a smaller
>>> number of
>>> teeth, going from a 50 tooth to a 40 tooth rear will make your
>>> top
>>> gear useless. Don't even think about putting a 30 tooth rear on
>>> there.
>>>
>> Well, they sell a 49, 48, 47, 46 etc sprocket. Does one tooth
>> make that
>> much of a difference? I'll search the web and try to find out how
>> much
>> this changes the gearing ratio.
>>
>
> With the same chain pitch, a 40t vs a 50t sprocket will give you a
> 20% change in ratio.
> Not something I would recommend either.
>
> To calculate the gearing ratio change for various sprockets, divide
> the original (50t) by the size you wish to try. e.g. 49t = 2%, 48t
> = 4%, 45t = 10% ..... etc.
>
> regards
> S.O.B
>
>
>
Thank you all.
--
Bcrawford
Posted by The Older Gentleman on April 19, 2007, 2:28 am
> > Albrecht wrote:
>
> > > Why go through all that crap, if the engine is designed for cruising
> > > at 9500 RPM redline?
> >
> > Yes, running it full throttle in neutral in the garage doesn't seem to
> > bother it at all.
>
> If doing that doesn't worry you, then running the engine at redline to
> go 73 mph will be easy for you.
>
But not *all the time*, unless he wants the engine to wear out fast.
Right?
--
BMW K1100LT 750SS CB400F CD250 SL125
GAGARPHOF#30 GHPOTHUF#1 BOTAFOT#60 ANORAK#06 YTC#3
BOF#30 WUSS#5 The bells, the bells.....
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> for highway. I mean, it's ok the way it is but it could have been just a
> little better.