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Author Topic: CV adapter and gearing  (Read 1658 times)

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thedoctor

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CV adapter and gearing
« on: June 08, 2014, 07:25:26 PM »
I'm planning a new project and need input. I am going to use a Polaris sportsman transmission. I want to use VW axles and cvs from a 1986 Jetta[90mm inner].I am trying to keep rotating weight down. I have long splined after market axles. Will these work with the outer fixed cv? Could an adapter be machined to adapt the VW  cv flange to the Polaris transmission[ a large splined shaft with small splined shafts on each side]? Can I overdrive the transmission 2 to 1 ? Let the discussion begin. Tim
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fabr

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Re: CV adapter and gearing
« Reply #1 on: June 08, 2014, 07:36:32 PM »
need more info.
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thedoctor

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Re: CV adapter and gearing
« Reply #2 on: June 08, 2014, 07:53:12 PM »
Think offroad shifter kart. Honda CR250 motor in a short wheelbase, 50"+ width,10"+ travel, 68"to 75" wheelbase.I run in tight woods.Oh I have solution for starting. Tim






"
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Carlriddle

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Re: CV adapter and gearing
« Reply #3 on: June 09, 2014, 06:22:01 AM »
I'm sure a flat adapter could be welded to the Polaris flanges and drilled to bolt on the VW axles.  I'm assuming you mean 2 L or R axles, which ever is longer?  Polaris tranny is chain driven?  Doubt your gonna need any overdrive, in woods with a 2-stroker.  Underdrive most likely.
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fabr

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Re: CV adapter and gearing
« Reply #4 on: June 09, 2014, 07:24:05 AM »
+1 ,so far. Still need a lot more info before any real suggestions come.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
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Theodore Roosevelt 1907

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dsrace

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Re: CV adapter and gearing
« Reply #5 on: June 09, 2014, 07:49:39 AM »
need pics and more info but general idea is understood.
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BDKW1

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Re: CV adapter and gearing
« Reply #6 on: June 09, 2014, 08:48:25 AM »
Trailing arm or A-arm? Trailing arms have a lot of plunge, splines alone will not provide all the plunge you need. The CV flanges would also need to be 2-3" deep and very large in diameter to clear the axle as the suspension cycles.

A-arm, your golden.
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fabr

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Re: CV adapter and gearing
« Reply #7 on: June 09, 2014, 09:17:41 AM »
Trailing arm or A-arm? Trailing arms have a lot of plunge, splines alone will not provide all the plunge you need. The CV flanges would also need to be 2-3" deep and very large in diameter to clear the axle as the suspension cycles.

A-arm, your golden.
He is only shooting for 10" travel. He MIGHT be aBLE TO DO TA'S BUT i'D PREFER TO SEE A ARMS.  Sorry for the caps.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein  (IT'S OFFICIAL THAT DAY IS HERE NOW!)

Carlriddle

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Re: CV adapter and gearing
« Reply #8 on: June 09, 2014, 09:20:39 AM »
Looks like non plunging outer cv, and reg inner cv.  So maybe 3/4" plunge from inside joint. 
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thedoctor

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Re: CV adapter and gearing
« Reply #9 on: June 09, 2014, 03:01:27 PM »
Yes definitely a arms. I am trying to use sport atv wheels[10" to start]. 1996 Polaris sportsman transmission is about 10.5to 1 reduction. I have figured I need about 5to 1 to hit 60 mph at top rpm of motor. I have read that welding flanges sometimes doesn't hold. Trying to keep everything splined. I have after market axles that are in between length of long and short, they are shoulderless. Tim
« Last Edit: June 09, 2014, 03:32:29 PM by thedoctor »
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dsrace

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Re: CV adapter and gearing
« Reply #10 on: June 09, 2014, 03:36:37 PM »
I'm planning a new project and need input. I am going to use a Polaris sportsman transmission. I want to use VW axles and cvs from a 1986 Jetta[90mm inner].I am trying to keep rotating weight down. I have long splined after market axles. Will these work with the outer fixed cv? Could an adapter be machined to adapt the VW  cv flange to the Polaris transmission[ a large splined shaft with small splined shafts on each side]? Can I overdrive the transmission 2 to 1 ? Let the discussion begin. Tim


do  you have a pic of the factory axle's on that sportsmen?
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thedoctor

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Re: CV adapter and gearing
« Reply #11 on: June 09, 2014, 04:14:51 PM »
Working on it. Daughter is emailing from phone. Wife has camera with her. duh
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Yummi

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Re: CV adapter and gearing
« Reply #12 on: June 10, 2014, 06:22:00 PM »
Removed a post from the Dr.  Carry on.
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fabr

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Re: CV adapter and gearing
« Reply #13 on: June 10, 2014, 08:50:30 PM »
Thanks for fixing that. Try again doc.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein  (IT'S OFFICIAL THAT DAY IS HERE NOW!)

thedoctor

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Re: CV adapter and gearing
« Reply #14 on: June 11, 2014, 03:31:29 PM »
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