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Old 04-30-2006, 03:13 PM   #16576
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Default spur gears

are the .8 spur gears the same for the mtx-3 as the mtx-4?
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Old 04-30-2006, 03:18 PM   #16577
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Quote:
Originally Posted by onnetz
are the .8 spur gears the same for the mtx-3 as the mtx-4?
spurs, yes. pinions, no.
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Old 04-30-2006, 03:24 PM   #16578
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Quote:
Originally Posted by Riketsu
spurs, yes. pinions, no.
thanks.... one more question..
do you have to keep the same spread between first and second on the pinions and spures?
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Old 04-30-2006, 03:29 PM   #16579
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Yes, sometimes you can get away with 1 tooth, but I recommend keeping the same split.
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Old 04-30-2006, 03:58 PM   #16580
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Quote:
Originally Posted by GrandeGixxer
Yes, sometimes you can get away with 1 tooth, but I recommend keeping the same split.

I used to think and say that as well. I learned something at this last race. The first gear spurs are the same size. Same with the second gear spurs. Measure them. There is a very slight difference in manufacturing from gear to gear, but other than that, they are the same size.
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Old 04-30-2006, 04:27 PM   #16581
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Quote:
Originally Posted by Scott Fisher
I used to think and say that as well. I learned something at this last race. The first gear spurs are the same size. Same with the second gear spurs. Measure them. There is a very slight difference in manufacturing from gear to gear, but other than that, they are the same size.
I was hoping someone would say that..
its the same way on the r40..
but like everything else, there is a limit to what you can get away with.

is there a chart showing stock pinions compared to the .8's?
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Old 04-30-2006, 05:00 PM   #16582
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I am not sure what you mean by a chart showing stock pinions vs. the .8's. You have to use .8 spurs with .8 pinions.
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Old 04-30-2006, 05:26 PM   #16583
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Quote:
Originally Posted by Scott Fisher
I am not sure what you mean by a chart showing stock pinions vs. the .8's. You have to use .8 spurs with .8 pinions.
am I wrong in thinking that the stock pinions are not .8?

looking for pinions I've come across the "stock" pinions, the .8 pinions and what some places referr to as the "fine" tooth pinions.. I'm thinking the "fine" pinions are the .8's....
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Old 04-30-2006, 05:29 PM   #16584
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Quote:
Originally Posted by onnetz
am I wrong in thinking that the stock pinions are not .8?

looking for pinions I've come across the "stock" pinions, the .8 pinions and what some places referr to as the "fine" tooth pinions.. I'm thinking the "fine" pinions are the .8's....
The stock MTX3 pinions/gears (they come with the kit) are not .8 pinions. The MTX3 prospec kit comes stock with .8 pinions/spurs.
The MTX4 also comes with .8 pinions/spurs.
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Old 04-30-2006, 05:33 PM   #16585
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Quote:
Originally Posted by Scott Fisher
The stock MTX3 pinions/gears (they come with the kit) are not .8 pinions. The MTX3 prospec kit comes stock with .8 pinions/spurs.
The MTX4 also comes with .8 pinions/spurs.
ok... thats what I thought...
what I meant by chart is there somthing comparing a stock size pinion to a .8 pinion...?

a stock 20 isnt going to be the same as a .8 20....
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Old 04-30-2006, 06:26 PM   #16586
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The diameter isn't going to be the same, but if you were using a 20t normal pinion and a 60t normal spur the gear ratio is the same as if you are using a 20t .8 pinion with a 60t .8 spur.

What happens is when changing from the old setup to the .8 setup is you will be running more teeth on the .8 stuff. You will use more teeth on the pinion and the spur.
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Old 04-30-2006, 06:46 PM   #16587
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Quote:
Originally Posted by Scott Fisher
The diameter isn't going to be the same, but if you were using a 20t normal pinion and a 60t normal spur the gear ratio is the same as if you are using a 20t .8 pinion with a 60t .8 spur.

What happens is when changing from the old setup to the .8 setup is you will be running more teeth on the .8 stuff. You will use more teeth on the pinion and the spur.
that makes sense.. thanks...
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Old 04-30-2006, 11:56 PM   #16588
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Quote:
Originally Posted by onnetz
thanks.... one more question..
do you have to keep the same spread between first and second on the pinions and spures?
Yes, stock gearing for mtx3 prospec :

pinions: 21/27 ( 6 tooth difference )
spurs: 53/59 ( 6 tooth difference )

In my car, I replace the pinions with 22/29 ( 7 tooth , but it's okay.... race tested ). However, it would be peace of mind if I could get 22/28 pinion gears as grandgixxer said.
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Old 05-01-2006, 12:22 AM   #16589
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Quote:
Originally Posted by asw7576
Yes, stock gearing for mtx3 prospec :

pinions: 21/27 ( 6 tooth difference )
spurs: 53/59 ( 6 tooth difference )

In my car, I replace the pinions with 22/29 ( 7 tooth , but it's okay.... race tested ). However, it would be peace of mind if I could get 22/28 pinion gears as grandgixxer said.
I ended up going with a 4 tooth split..
21/25
54/58

I will end up buying more, but these pinions are spendy...

anyone running the white springs?
I got used to driving an almost twitchy car and the mtx-3 feels too planted in the rear and not enough steering...
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Old 05-01-2006, 01:01 AM   #16590
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Quote:
Originally Posted by onnetz
I ended up going with a 4 tooth split..
21/25
54/58

I will end up buying more, but these pinions are spendy...

anyone running the white springs?
I got used to driving an almost twitchy car and the mtx-3 feels too planted in the rear and not enough steering...
Mugen white springs ? Isn't that too stiff ?
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