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benelli08
MMT F.E.
Joined: Wed Aug 29, 2012 3:42 pm Posts: 763
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 Old gator tail gear ratio
I was wondering if I could change the gear ratio on my gator tail I have the marine. Motor and those come with diffrrnt gears than the older models
_________________ 2010 gtr cdi with a stage 2 pushing a 18x46 home made HEAVY DUTY boat
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Sun May 19, 2013 11:09 am |
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Gigafowl
MMT Elite Member
Joined: Tue Jan 13, 2009 7:19 pm Posts: 6441 Location: Trinity Bay - Texas
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 Re: Old gator tail gear ratio
I thought that the "sweet spot" in stock GTR gearing was 1.2 to 1 on a 10 pitch GT prop... If you are going to ask a gear ratio question - you might want to preface the question with whatever mods you have or intend to add as well as what prop and pitch you are going to use on final power to the water and a bit of info on hull and loads... Good Luck... Related thread... viewtopic.php?f=3&t=20486&p=382758&hilit=ratio#p382758
_________________ Eat - Sleep - Hunt ! ! !
"It is good to have an end to journey toward; but it is the journey that matters, in the end."
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Sun May 19, 2013 12:32 pm |
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benelli08
MMT F.E.
Joined: Wed Aug 29, 2012 3:42 pm Posts: 763
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 Re: Old gator tail gear ratio
I got a stage 2. Ima run the regular 10 pitch prop on a 18x48 boat My boat was quick right when I got it back but now that I put bout 70 hours on it it has slowed down fastest it ever went was 34 with 2 ppl now I'm lucky if I get 30 31 by ma self the only thing I can see is that I changed. Props but this weekend I put my old prop back on and it so wore out its turning 4300 Rpms like nothing and that's where I usually run it at 4300-4400
_________________ 2010 gtr cdi with a stage 2 pushing a 18x46 home made HEAVY DUTY boat
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Sun May 19, 2013 3:10 pm |
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Team Camo
MMT Sponsor
Joined: Thu Oct 01, 2009 4:49 pm Posts: 8536 Location: Bridge City, TX
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 Re: Old gator tail gear ratio
70 hrs, it's time to check valve lash & probably wouldn't hurt to do a leakdown test. You said normal rpm @ 4300, what are you turning the new prop?
_________________ 1846 GTB & 35 GTR Team Gator-Tail
Killer Kallz & ANGLE PORT dealer (409) 720-8949
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Sun May 19, 2013 4:05 pm |
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T-al
MMT Pro Member
Joined: Thu Jan 22, 2009 9:30 pm Posts: 264
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 Re: Old gator tail gear ratio
T-Carl measure that prop an let us know. I got it on step with 7 people and generator plus gear. Was turning 4200 and only was 3/4 throttle. you need a prop capt
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Sun May 19, 2013 4:12 pm |
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benelli08
MMT F.E.
Joined: Wed Aug 29, 2012 3:42 pm Posts: 763
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 Re: Old gator tail gear ratio
Look t-al how you knew it was me
_________________ 2010 gtr cdi with a stage 2 pushing a 18x46 home made HEAVY DUTY boat
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Sun May 19, 2013 4:22 pm |
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T-al
MMT Pro Member
Joined: Thu Jan 22, 2009 9:30 pm Posts: 264
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 Re: Old gator tail gear ratio
lol im good like that!
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Sun May 19, 2013 4:24 pm |
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benelli08
MMT F.E.
Joined: Wed Aug 29, 2012 3:42 pm Posts: 763
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 Re: Old gator tail gear ratio
Who does that around laffayette area don't wanna bring it to gator tail. Just for a check up ingot a buddy that knows how to do all that but I'm always bugging him
_________________ 2010 gtr cdi with a stage 2 pushing a 18x46 home made HEAVY DUTY boat
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Sun May 19, 2013 4:25 pm |
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benelli08
MMT F.E.
Joined: Wed Aug 29, 2012 3:42 pm Posts: 763
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 Re: Old gator tail gear ratio
Small prop is 11 1/4 big prop is 11 7/8
_________________ 2010 gtr cdi with a stage 2 pushing a 18x46 home made HEAVY DUTY boat
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Sun May 19, 2013 4:28 pm |
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T-al
MMT Pro Member
Joined: Thu Jan 22, 2009 9:30 pm Posts: 264
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 Re: Old gator tail gear ratio
12 an 1/4 is what a new one should measure. 1" makes all the difference yea
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Sun May 19, 2013 4:30 pm |
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benelli08
MMT F.E.
Joined: Wed Aug 29, 2012 3:42 pm Posts: 763
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 Re: Old gator tail gear ratio
And i deff need to tinker with my carb is running way to rich brunt over 21 gal in 2 days my plugs are probably filed
_________________ 2010 gtr cdi with a stage 2 pushing a 18x46 home made HEAVY DUTY boat
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Sun May 19, 2013 4:42 pm |
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benelli08
MMT F.E.
Joined: Wed Aug 29, 2012 3:42 pm Posts: 763
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 Re: Old gator tail gear ratio
I wouldn't consider that getting on step but first night was rolling 5 ppl and generator and all stuff. Rolling 25 I was proud until t-Mac burnt me. Made me feel like I was in a go-devil long tail And I got that prop off had to lock it and get my brother to step on it
_________________ 2010 gtr cdi with a stage 2 pushing a 18x46 home made HEAVY DUTY boat
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Sun May 19, 2013 4:46 pm |
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Gtr18x42
MMT F.E.
Joined: Wed Jun 06, 2012 11:32 am Posts: 880 Location: Loreauville La
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 Re: Old gator tail gear ratio
They started putting a 48 tooth bottom gear on the marine engines cuz the 45 tooth would loose out with a load. But it was fast as hell empty with the 45 tooth. Alex has a 45 tooth bottom gear and so does Tmac.
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Mon May 20, 2013 1:37 pm |
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benelli08
MMT F.E.
Joined: Wed Aug 29, 2012 3:42 pm Posts: 763
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 Re: Old gator tail gear ratio
Man that sounds like a really nice skiff in Your Signature that thing must run
_________________ 2010 gtr cdi with a stage 2 pushing a 18x46 home made HEAVY DUTY boat
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Mon May 20, 2013 7:43 pm |
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Gtr18x42
MMT F.E.
Joined: Wed Jun 06, 2012 11:32 am Posts: 880 Location: Loreauville La
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 Re: Old gator tail gear ratio
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Mon May 20, 2013 8:02 pm |
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benelli08
MMT F.E.
Joined: Wed Aug 29, 2012 3:42 pm Posts: 763
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 Re: Old gator tail gear ratio
But man that's a nice skiff
_________________ 2010 gtr cdi with a stage 2 pushing a 18x46 home made HEAVY DUTY boat
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Mon May 20, 2013 8:15 pm |
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Gtr18x42
MMT F.E.
Joined: Wed Jun 06, 2012 11:32 am Posts: 880 Location: Loreauville La
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 Re: Old gator tail gear ratio
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Mon May 20, 2013 8:41 pm |
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