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Author Topic: cv joints and rack and pinion question  (Read 3111 times)

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bitmatt

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cv joints and rack and pinion question
« on: June 04, 2012, 07:18:56 PM »
hi guys im building a dune buggy and i want to do independent rear suspension but i dont know anything about cv joints/axles i want to learn how they get put together and how to make them and with what. and one question about racks and pinions, what is the advatage of a rack and pinion? whats the difference with it and the type of system 4 wheelers use?
thanks
mat
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Offline fabr

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Re: cv joints and rack and pinion question
« Reply #1 on: June 04, 2012, 07:27:31 PM »
There's quite a bit of info about cv's here. Try a search to see what you find. Then ask questions. We're glad to help.
as to the rack compared to the 4 wheeler pivot is that bumpsteer can be designed out wheras there is no way I know of to eliminate bumpsteer with the pivot setup.Bumpsteer on long travel buggies MUST be eliminated or it will be a handling nightmare at best and deadly at worst.
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bitmatt

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Re: cv joints and rack and pinion question
« Reply #2 on: June 04, 2012, 07:33:50 PM »
Quote from: masterfabr on June 04, 2012, 07:27:31 PM
There's quite a bit of info about cv's here. Try a search to see what you find. Then ask questions. We're glad to help.
as to the rack compared to the 4 wheeler pivot is that bumpsteer can be designed out wheras there is no way I know of to eliminate bumpsteer with the pivot setup.Bumpsteer on long travel buggies MUST be eliminated or it will be a handling nightmare at best and deadly at worst.
and by long travel buggies its how much the suspension travels? i am not really looking to build a buggy to do any jumps its just to go ride in the trails and play in the mud so i wont want like 16" of suspension travel
« Last Edit: June 04, 2012, 07:48:52 PM by bitmatt »
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Offline fabr

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Re: cv joints and rack and pinion question
« Reply #3 on: June 04, 2012, 08:02:15 PM »
If you limit the suspension travel to just a few inches like a quad/4 wheeler typically have then the pivot will be fine. Up to a point. Just how big a buggy are you talking about?
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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

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

bitmatt

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Re: cv joints and rack and pinion question
« Reply #4 on: June 04, 2012, 08:38:29 PM »
Quote from: masterfabr on June 04, 2012, 08:02:15 PM
If you limit the suspension travel to just a few inches like a quad/4 wheeler typically have then the pivot will be fine. Up to a point. Just how big a buggy are you talking about?
its 60" wide and not sure how long itll be yet and its a two seater
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Offline fabr

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Re: cv joints and rack and pinion question
« Reply #5 on: June 04, 2012, 08:42:22 PM »
IMO,you want to go rack.
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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

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

bitmatt

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Re: cv joints and rack and pinion question
« Reply #6 on: June 04, 2012, 08:46:52 PM »
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Offline fabr

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Re: cv joints and rack and pinion question
« Reply #7 on: June 04, 2012, 08:49:44 PM »
Due to the width a rack would b a far better choice that is,not that a pivot couldn't work. It just wouldn't be worth a crap IMO on a wider vehicle with even minimal travel needed..
Logged
"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

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"
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