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Posted by: aliko10100
I am a part of a University race team where we build small off road vehicles to participate in SAE organized, mini baja events. In past years our school has went ahead and used a CVT to power our car, and this usually works pretty good, but this year we are wanting to try and incorporate a gearbox. We figure something out of an ATV would probably give us just want we need.
Some of the things we are aiming to get out of our drive-train is we want to try and get to a minimum top speed of 50 km/h (though more is always better) in the high gear and in the lowest gear we need to be able to muster up a steep grade hill from a stop. The weight of the vehicle will be around 350-450 pounds. We definitely want a reverse on the gearbox, and we were thinking that a three speed would be enough, though if you think that four or a five speed would provide better results we could go with one of those. And we will need it to be a paddle shift.
The biggest limiting factor we have for speed is the engine. What is unique to these competitions is that every car is required to use an unmodified Briggs and Stratton Model 20. The specifications for this engine can be found at there site here...
http://www.briggsracing.com/di...uter.asp?Docid=101377
So does anyone have suggestions as to what model gearbox would work to best meet those specs and why that one? The best way to get one cost effectively (buy from a dealer, a scrap yard, etc)?
