Need some tech on motorcycle motors in buggy

Rockwells607 · Mar 12, 2013

I saw a buggy with a gsxr motor on madram a while back, my buddy has a small rear engine buggy that's blown up and he has had it for sale a while, well his brother just totaled his rx1 Yamaha snowmobile an he bought it back, it's fuel injected and the motor is fine, we discussed putting it in the buggy but I don't know how people are connecting the motor to the tranny or wich way their going , I can't imagine a motorcycle clutch and tranny holdin up to 4 swampers and the sled motor doesn't have a built in clutch as transmission... Thoughts, ideas and input please?

Stuntman Autoworks · Mar 12, 2013

The way I have seen it done in the sammys is they line up the output on the motorcycle trans with the input of the vehicles trans and they make a short driveshaft and connect them. The ones I have seen they actually used the sprocket on the motorcycle and welded tube to the side with a ujoint and on the vehicles trans they used the center of a clutch disc so they would have the splines for the input. I've also seen where one guy machined a peice to bolt onto where the sprocket goes and it actually had a place for a pilot bearing to support the input shaft.

fordcontraption01 · Mar 12, 2013

That's Scott Thomas from the mud devils in South Carolina I've rode with it it is pretty cool think it was a busa motor coupled to the Sammy trans

Rockwells607 · Mar 12, 2013

So they are using the clutch and tranny in the motor? I didn't think they'd hold up and a sled motor has none of that, I was thinkin of maching adapter flange for flex plate to bolt to instead of sled Clutch

Rockwells607 · Mar 12, 2013

I believe the rx1 is liquid cooled too but I'm not sure if its designed to run in 90 degree weather either :dunno:

fordcontraption01 · Mar 12, 2013

Think that Scott was running a Sammy radiator in his and he's beat on it for long periods of time and I never seen it over heat it just dies a lot when you try and pull out in too high a gear

Budget YJ · Mar 12, 2013

Re: Need some tech on motorcycle motors in buggy

What do you want for the rx1 and then you can buy a Motorcyle motor with clutch.

vidio1 · Mar 12, 2013

http://www.minibuggy.net

Everything you ever wanted to know about M/C powered buggies......

fordcontraption01 · Mar 13, 2013

fordcontraption01 said:
That's Scott Thomas from the mud devils in South Carolina I've rode with it it is pretty cool think it was a busa motor coupled to the Sammy trans

sorry his name is John Thomas and he is building a new buggy called the spider monkey busa buggy it's got a busa motor with a turbo if you go to mud devil 4x4 forum it's in the builds section

Lickliter21 · Mar 13, 2013

Re: Need some tech on motorcycle motors in buggy

Saw this buggy at hog wild. He ran a driveshaft from the m/c engine to a transfer case in the front to a 5 speed Trans and to another transfer case out to the axles. Pulley on the driveshaft turned the power steering pump. The Trans was so he would have reverse. Pretty neat little buggy.

paradisepwoffrd · Mar 14, 2013

Lickliter21 said:
Saw this buggy at hog wild. He ran a driveshaft from the m/c engine to a transfer case in the front to a 5 speed Trans and to another transfer case out to the axles. Pulley on the driveshaft turned the power steering pump. The Trans was so he would have reverse. Pretty neat little buggy.

it would probly do better without the extra tcase in there, and Id hate to see what kind of RPMs the pump is going through in this setup.

otherwise they are cool idea. I love the available RPM range in the bike motors. Im really interested to see Johns turbo setup, hp & RPM.

I know that John runs his from the bike trans output to a toyota 5spd. He setup the alt & ps pump to run off the engine crank though. He also backcut the gears in his original gsxr trans to help with engine braking, not sure about the busa setup. Last i heard he was looking to run a slipper clutch in the bike trans to allow smoother shifts while beating on it.

with the snowmobile setup, you always run a clutch pedal and slip spline on the shaft running between transmissions. that way you could disengage to shift the sami/yota trans without complicating the bike setup.