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Automotive Powered Off Road (AKA: Buggys, Jeeps, Trucks, Etc,Etc. ) => Chassis and Suspension => Topic started by: beastybronco on October 02, 2011, 08:59:42 AM
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What would be the best tube thickness to use in a front engine truggy that has 435 horse? I am thinking 1.5 .120 for main structure and 1.25 for the rest. What would you guys use?
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Kind of hard to answer without some more details about chassis design.
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Also, play car or race car?
1.5 X .120 is going to be the minimum.
1.75 would give you a lot less trouble down the road.
Cross bracing, try to keep the diameter up but go down on the wall thickness, like 1.75 X.095 or .083. Most chassis crack at the welds, the larger tubes have more surface area on the welds and tend to crack less even though they are thinner wall........
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Kind of hard to answer without some more details about chassis design.
I am going to have 16 inches of travel on all corners and pretty much just gunna put it together piece by piece till I like it. Sounds dumb but i dont have cad or anything to draw it on
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You would save money and a lot of time by buying a set of plans.
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yup
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i thought of that but I cant find any plans for a front engine buggy.
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The weight distribution is gonna suck.
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The weight distribution is gonna suck.
Ya but what other option do I have if i want to use that engine and tranny?
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V drive.
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IRS rear or gonna be a straight rear axle on this?
We have a builder on this site using a small block Chevy in kinda of mini truck. Have to find his thread. It might help you.
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http://www.dtsfab.com/index/index.php?topic=1150.0 (http://www.dtsfab.com/index/index.php?topic=1150.0)
He started with a bike motor but gave in to a v-8!
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V drive.
??? ??? ??? ??? what do you mean by that?
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Yes i seen it that's what got me thinking on using the engine
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Google V drive. They use it a lot in drag boats to keep the motor in the rear right near the prop.
Also these guys use a type of v drive to keep the motor near the rear. But they do need a axle with a really offset diff.
http://www.coloradosandcars.com/SandTruckV3/tabid/589/Default.aspx (http://www.coloradosandcars.com/SandTruckV3/tabid/589/Default.aspx)
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But they do need a axle with a really offset diff.
Wonder why they just dont turn the v drive vertical and run a normal diff.
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Wonder why they just dont turn the v drive vertical and run a normal diff.
Wheel travel. The diff in this setup actaully come up beside the engine on heavy compression. The motor sits to one side. The diff to the other.
If it was above the diff the truck would be WAY up there. These trucks can turn and burn corners VERY hard. Nice low center of gravity with a lot of wheel travel
If the motor was above the diff it would have to be some 30 inches higher to have the diff clear the oil pan alone on compression of the rear suspension. Be one top heavy mofo. NO turning ability.
Like the other link you have seen. TT trucks are pretty good adn they use a fornt to mid mounted motor. Might be an option.
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Actually by saying the diff comes up beside the engine is misleading by me and wrong. The DRIVESHAFT comes up alongside the engine. The diff is behind it.
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Problem solved.
This
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Fwww.tropical-rainforest-animals.com%2Fimage-files%2Fjaguar.jpg&hash=9b3dcc1e34c3e6d37bc8f5311f0a2663f953f690)
Plus this
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Fwww.stepgymshoes.com%2Fwp-content%2Fuploads%2F2009%2F07%2Fnice-butt.jpg&hash=c34ec462002a56487fb0e39cb5f8e9b5dcc8e74e)
Equals this:
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Flh6.ggpht.com%2F_FB6iyfgsb1Q%2FSWLikFF7GrI%2FAAAAAAAAQrA%2FHuCHp1X2Ndw%2Ffactory%2520five%2520irs.jpg&hash=cd1748466800a7e84423664b7e155b690b412789)
Check here for ideas.
http://www.sandrocket.com/ (http://www.sandrocket.com/)
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Fwww.sandrocket.com%2Fimg%2Fpix_main%2FrevOct08%2Fmp01-4-full.jpg&hash=4f97d6ef8093ff26cf4065094b7599ef60ff5f1d)
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would this handle the power dont know much bout IRS.
http://www.ebay.com/itm/1963-1979-Corvette-Rear-End-Assembly-Complete-Ready-?cmd=ViewItem&hash=item20ba82c563&item=140568085859&pt=Vintage_Car_Truck_Parts_Accessories&vxp=mtr (http://www.ebay.com/itm/1963-1979-Corvette-Rear-End-Assembly-Complete-Ready-?cmd=ViewItem&hash=item20ba82c563&item=140568085859&pt=Vintage_Car_Truck_Parts_Accessories&vxp=mtr)
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That rear end would hande the pwoer easy enough. The big question is can you get the wheel travel you want with it?
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Corvette rears are D44's. gearing in the range that we need to use them in is a little on the weak side. An 8.8 out of a T-bird or Mustang is slightly stronger. They are all a little wide flange to flange, most end up about 16".
Forget you ever heard about the V-drive. Nothing but head aches. The guys racing with them in the desert have had years worth of learning curve to deal with all their issues. Slapping a regular boat V-drive in there will result in all sorts of problems.
A "front" engine buggy can be made 50/50 or even rear heavy depending on how you lay everything out.
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The big question is can you get the wheel travel you want with it?
I would fab up a flange that would bolt a cv to it and make my own a-arms.
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We tossed around alot of ideas here
http://www.dtsfab.com/index/index.php?topic=2451.0 (http://www.dtsfab.com/index/index.php?topic=2451.0)
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I would fab up a flange that would bolt a cv to it and make my own a-arms.
That doesn't answer the question. Axle length and cv angle capability will limit wheel travel to a number depending on diff width and overall car width desired. Narrower diff/longer axles = longer travel( all other things being equal).
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Problem solved.
This
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Fwww.tropical-rainforest-animals.com%2Fimage-files%2Fjaguar.jpg&hash=9b3dcc1e34c3e6d37bc8f5311f0a2663f953f690)
Plus this
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Fwww.stepgymshoes.com%2Fwp-content%2Fuploads%2F2009%2F07%2Fnice-butt.jpg&hash=c34ec462002a56487fb0e39cb5f8e9b5dcc8e74e)
Equals this:
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Flh6.ggpht.com%2F_FB6iyfgsb1Q%2FSWLikFF7GrI%2FAAAAAAAAQrA%2FHuCHp1X2Ndw%2Ffactory%2520five%2520irs.jpg&hash=cd1748466800a7e84423664b7e155b690b412789)
fairly short travel ;D ;D ;D
Check here for ideas.
http://www.sandrocket.com/ (http://www.sandrocket.com/)
(https://dtsfab.com/proxy.php?request=http%3A%2F%2Fwww.sandrocket.com%2Fimg%2Fpix_main%2FrevOct08%2Fmp01-4-full.jpg&hash=4f97d6ef8093ff26cf4065094b7599ef60ff5f1d)
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Another question is what bout 930 cv's? You guys all use them on your mc cars, but will they take it or do i have to find other one??
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930's on a V8 car will be very short lived. On the up side, you will never blow a R&P.......
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930's can handle the HP just not the torque especially at big angles. The porches they came from had 300-500hp but torque was 200-300. Thats when the 934's grew out.
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The angle of the dangle is all important........................................ ;D ;D ;D