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  Topic Review (Newest First)
03-22-2012 11:32 PM
iceman320 maybe so. I will have to think about this project a little bit more and decide if it's something that I really want to do for sure or not. things might be changing now and i might be able to buy a early bronco now that my cars paid off. so I might decide to build the bronco instead but i will just have to think this over and decide for sure.
03-22-2012 08:47 PM
Duramax I think if you use the 700xx engine, you will be very short on hp.
03-21-2012 07:10 PM
iceman320 well I have been thinking about my build more and I know that I would like to build either a sand rail or a utv type vehicle I just got back form measuring my atv trailer and i could build which ever vehicle I decide to build to be 88" long and 84" wide and still be able to have it fit sideways on my atv trailer. so i have just been thinking about building a rzr xp frame and then putting a motor on that? what do you guys think which should I try to build the sand rail or the utv?
03-21-2012 04:20 PM
Sid iceman320,
I am sorry, I can't answer that question, but there are those on this forum that can and I am sure will recommend materials.
03-19-2012 11:22 PM
iceman320 thanks sid, I have also been thinking about using the new prostar 570 engine from the rzr 570 in it also but I don't know for sure yet. cause I would really like to have it be a standard trans. do you think that a frame made out of some 1" aluminum tubing with a 1/16" wall thickness would be strong enough to build the frame for the sand rail out of or would the steel tubing be better?
03-19-2012 09:40 PM
Sid iceman320,
I hope I helped somewhat. When you start your project be sure to post progress pictures. We all admire the creative mind. I like the idea of a small 4 cylinder engine. Light weight and a ton of power, aluminum transmission and a driveshaft.
Have fun!
03-19-2012 08:40 PM
iceman320 ok thanks for the help sid maybe i will start looking into a ford flat head v8 then or a small 4cylinder engine then? but I would like the buggy to have a standard transmission though. instead of one of those stupid cvt one's that the rzr uses.
03-19-2012 07:56 PM
Sid iceman320,
I wish I could answer that with certainty but all things considered I don't think so. The reason I say that is the weight difference, the size of the tires, the necessarily larger fuel consumption, the transmission/clutch issues with the weight differential and the initial cost of the engine and transmission would make it less than cost effective. IMHO.
I hope others chime in and discuss alternative power to support the above mentioned items and many others. We all want to see you build the machine of your dreams.
03-19-2012 07:16 PM
iceman320 I was going to try to keep my sandrail about the same size or just a little bit bigger than a rzr xp 900. so do you think that the 700xx motor and clutch would work for that?
03-19-2012 12:03 PM
Sid iceman320,
In the March issue of ATV Action Magazine on Pages: 50, 51, 52 and 53 is an article which resembles the RZR you saw on youtube. It is called a RZR X Apex. The Polaris RZR was modified for a Hadley Hopkins of Clovis, California. The machine has a Yamaha Apex 4 cylinder (20 valves) engine in it similar to the one in the Yamaha R1 but available on the snow mobile. MCX-USA doubled the horsepower in the engine. A turbocharger was added (MCX design) that gave this machine a very conservative 260 horsepower with an 11 pounds of boost. Of course many many modifications were done to the chassis, suspension and associated equipment. What a machine!!!
I tried to find a website so you could see this out-of-this-world rocket but was unable too.
The magazine is supposed to be on the shelf until the 19th of April. Hope you can find it.
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