to 14T front, or 42T the rear???

[COP TZR]

Hey everyone, just need some insight or personal experience on gearing change.  I've got a 2000 Monster 750 and I was looking to replace the rear steel sprocket (unsprung weight) for a lighter aluminum one plus "bling" factor.  My current gearing is 15T front & 41T rear.  I'm pretty sure this is stock for my bike.

Looks like I have enough slack in my chain to compensate for 1 tooth up in the rear.  Question is, am I going to notice a difference with acceleration with this slight change?  I know it probably won't be as drastic as going down 1 tooth in the front.  I've read so much about the 14T front wearing down swingarm sliders.

Anyone chime in?

thanks
Sam

[superjohn]

To get the same effect you'd have to go up 2 teeth in the rear to a 43T and you may need a new chain (excuse for a lighter one) since the current one may be too short.

[stopintime]

To get the same effect you'd have to go up 2 teeth in the rear to a 43T and you may need a new chain (excuse for a lighter one) since the current one may be too short.

Up 3 rear ~= 1 front.

1/15 = 6.67%
3/41 = 7.32%

[COP TZR]

To get the same effect you'd have to go up 2 teeth in the rear to a 43T and you may need a new chain (excuse for a lighter one) since the current one may be too short.

the chain has just recently been replaced by previous owner, so I'm avoiding that and trying to work with what I've already got.  Will there be any change by going 1 up on the rear to 42T?  I will be at 15T front & 42T rear.

[stopintime]

the chain has just recently been replaced by previous owner, so I'm avoiding that and trying to work with what I've already got.  Will there be any change by going 1 up on the rear to 42T?  I will be at 15T front & 42T rear.

1 up in the rear (  ) will give you a third of the result you would have had if you did 1 front or 3 rear.
Not worth the money, IMO.

[wingnut]

I would imagine the question you are looking to have answered is will you notice a difference in performance going up 1 tooth in the rear.  The difference will be negligible at best.  In my opinion you would be better off dropping one up front or saving your $ until you're ready to pull the trigger on a new chain and rear (+3 teeth) sprocket.

[COP TZR]

I would imagine the question you are looking to have answered is will you notice a difference in performance going up 1 tooth in the rear.  The difference will be negligible at best.  In my opinion you would be better off dropping one up front or saving your $ until you're ready to pull the trigger on a new chain and rear (+3 teeth) sprocket.

what about the unsprung weight factor?

[stopintime]

what about the unsprung weight factor?

Probably not enough to notice? On the other hand, there is still the bling factor which in itself is valid

[Tangerine Dream]

I went with the 14t on the front with my first Monster. And then with the 43t on the rear with my second. Didn't require a new chain with either mod. I decided to go up in the rear the second time around because the 14t lowered the chain to the point it was riding on the guard and making a mess that I got tired of cleaning up every few hundred miles. I also apreciate the bling factor    DP makes a nice 43t that looks much better than stock 

[Moronic]

I've gone up one tooth on the rear with my S4Rs, stock on the front.

IMHO the difference is very noticeable.

Surprising as doing the maths says it is just 100 rpm cruising at 70mph or so.

Nevertheless, you will certainly notice the change. And it might be enough for you.

Is for me. I've no desire at all to gear still lower.

[COP TZR]

I've gone up one tooth on the rear with my S4Rs, stock on the front.

IMHO the difference is very noticeable.

Surprising as doing the maths says it is just 100 rpm cruising at 70mph or so.

Nevertheless, you will certainly notice the change. And it might be enough for you.

Is for me. I've no desire at all to gear still lower.

Looks like thats the answer I wanted to hear.  I was a bit concerned of the 500rpm difference with dropping 1 tooth on the front, considering my trans. is only 5spd.

[Moronic]

I suspect going down at the front wouldn't be nearly so popular if it didn't save a chain replacement in most cases.

IMO, it's too much and it pulls the chain line lower when it needs to be higher.

But then, I like big gearing.