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 gear ratios? 
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MMT Pro Member

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Post gear ratios?
what is the gear ratios of a gtr 35? I know the prodrive has a 1.5:1,, the mud buddy hd 4000 has a 1.3:1,,go devil as a 1:1,, but what does the gator tail have?


Mon Mar 14, 2011 8:49 pm
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Post Re: gear ratios?
It's a secret. 8-)


Mon Mar 14, 2011 8:50 pm
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Post Re: gear ratios?
lol

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Mon Mar 14, 2011 8:56 pm
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Post Re: gear ratios?
so what's the reduction?


Mon Mar 14, 2011 8:59 pm
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Post Re: gear ratios?
if i remember correctly a stock GTR is a 1.15:1


Mon Mar 14, 2011 8:59 pm
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Post Re: gear ratios?
must be why there quicker then most


Mon Mar 14, 2011 9:00 pm
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Post Re: gear ratios?
If you were to have a pull off the higher gear ratio will win. Torque multiplier.


Mon Mar 14, 2011 9:03 pm
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Post Re: gear ratios?
that's what I thought so by right the proctor should run better with weight right? buy the ones I seen barely got up good with 3 people.


Mon Mar 14, 2011 9:07 pm
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Post Re: gear ratios?
Anyone know if I can get a new pulley for a GD??? Im running 4300 rpms and before I run a cam I want to pull rpms down.


Mon Mar 14, 2011 10:47 pm
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Post Re: gear ratios?
I dont think you can change the gear ratio on a GTR...


Tue Mar 15, 2011 8:36 am
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Post Re: gear ratios?
so why doesnt the prodrive run that good with a load?


Tue Mar 15, 2011 8:53 am
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Post Re: gear ratios?


Tue Mar 15, 2011 9:01 am
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Post Re: gear ratios?


Tue Mar 15, 2011 4:39 pm
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Post Re: gear ratios?
not sure...all i know is two different places told me they couldnt do a gearing change on a gtr. maybe someone can elaborate??


Tue Mar 15, 2011 6:24 pm
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Post Re: gear ratios?
On the 35 Briggs

PD - 1.5 to 1
GDSD - 1.4 to 1
GTR - 1.2 to 1

MB - offers a variety of pulley ratios


ALSO --- remember prop pitch is slightly different too on the different MMs !

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Tue Mar 15, 2011 6:52 pm
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Post Re: gear ratios?
any setup can have a gear change.... belts are the easiest as it is just a change in the top pulley.... but you have to make up for the change in belt length.

Best way to gear change is change top and bottom pulley to adjust for the same belt....

Easiest way is to change the pulley on the motor only but you are going to have to shim under the motor to make up the change in pulley size to keep the same belt.

as with an airboat..... slow down the prop and spin more pitch and you get the bottom end, but you will loose some top end speed....


Tue Mar 15, 2011 7:05 pm
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Post Re: gear ratios?
wow I never knew the gdsd had a reduction...but still don't know why the prodrive doesn't haul a better load over the other ones


Tue Mar 15, 2011 10:11 pm
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Post Re: gear ratios?
go-devil longtails dont.

go-devil surface drives do.

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Wed Mar 16, 2011 7:55 pm
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Fri Mar 18, 2011 5:52 am
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