gearing

forkseal · Apr 10, 2014

Ive played with gearing alot on my grom and heres what i found.-1 on the front sprocket is a great idea. I tried a 35 and a 36 tooth rear and couldnt stand either. It made its quicker off start but killed my topend and put me into redline easily. Im happiest with -1 and stock rear sprocket.

Side note why so many ppl complain about vee rubber tires? Ive never had a problem and was hitting corners pretty hard tonight at a running track at a local park

normsynorms · Apr 10, 2014

Vee Rubber when wet is the problem. I had the back almost wash out so many times before I changed.

Bubba Army.

mattallac · Apr 10, 2014

I second that , water and vee rubber = danger

Grom1202 · Apr 10, 2014

Vee is good on dry.. Wet its not so good.

braap

tyler · Apr 10, 2014

How much was the top end effected from the -1 front sprocket?

Mr. Nice · Apr 10, 2014

tyler said:
How much was the top end effected from the -1 front sprocket?

theoretically you lose a few mph top end, in reality you probably gain a couple since you can actually pull to the rev limiter in 4th

StrayDog · Apr 10, 2014

As above.
I wend down to a 14t front and actually improved top end
With standard gearing I couldn't get near the red line.
FYI for me redline is at about 65mph gps true .

tyler · Apr 10, 2014

StrayDog said:
As above.
I wend down to a 14t front and actually improved top end
With standard gearing I couldn't get near the red line.
FYI for me redline is at about 65mph gps true .

did you need a new chain when you installed the front 14t?

Mr. Nice · Apr 10, 2014

tyler said:
did you need a new chain when you installed the front 14t?

Didn't need a new one but had to tighten it.

forkseal · Apr 10, 2014

-1 gets it to rev out fourth making it faster all the way to redline. From there you have to decide if you want more topend or wheelies. Changing rear sprocket has a major affect on topend. Unless you dont mind cruising at redline everywhere

1lowzu · Apr 10, 2014

going down a tooth in the front will have almost the same effect as going up a couple teeth in the rear on most bikes a -1 is the same as going +3 in the rear the only real difference you will notice between the 2 is price and in most cases going with a smaller front sprocket will lower your chain down on the chain guide on the top of the swingarm and cause it to wear

Hotrod_Hell · Apr 11, 2014

I had a -1 on the front but I want to get more speed than that. So I decided to go with a +2 rear and stock front. So in theory, I should have a higher ratio than stock gearing giving me just a little more usable power than stock. I have not been able to ride the bike yet though.

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Hotrod_Hell · Apr 11, 2014

Plus, I wanted the rear sproket look a little more proportional. They are so damn small stock. I'm a form and function kind of guy so I try to find what looks good and works good.

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1lowzu · Apr 13, 2014

I also went with a +2 in the rear for the same reason to the stock rear is horrible looking lol and so far ive went about 100 miles with it and so far im very happy with the results

Hotrod_Hell · Apr 13, 2014

1lowzu said:
I also went with a +2 in the rear for the same reason to the stock rear is horrible looking lol and so far ive went about 100 miles with it and so far im very happy with the results

Can you tell if it has slightly quicker acceleration than stock?

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1lowzu · Apr 14, 2014

Yea it has alittle more pull to it

MOBSTER · Apr 14, 2014

My stocker came with a +2, bought it slightly used. It was too much for me. 1-3 were pointless gears. I did a 140 rear tire and put the stock sprocket back on, this is below stock bc of the tire. 3rd gear was very useable then. But my top end pull and speed was low. Now I have a +1 rear with the 140 and it feels perfect for me. Pull all around and 3rd is still useable.

Hotrod_Hell · Apr 14, 2014

Once I get a 140, I will be pretty close to stock gearing. That will be perfect for when I do a BBK.

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tyler · Apr 17, 2014

I put the -1 F sprocket on yesterday, pulls a little better now but it's not as noticeable as I was expecting it to be .

Strokd_GE · Apr 17, 2014

tyler said:
I put the -1 F sprocket on yesterday, pulls a little better now but it's not as noticeable as I was expecting it to be .

you notice most riding 2 up or low rpm pulls in 3rd and 4th, I went back to stock gearing from -1 front because losing 5mph wasn't my thing, I could wrap 76 on the indicater

gearing

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