Landracing Forum

Tech Information => Steering - Suspension - Rear End => Topic started by: Dreamweaver on September 04, 2009, 12:43:01 PM

Title: Motorcycle engine to driveshaft?
Post by: Dreamweaver on September 04, 2009, 12:43:01 PM

How is the connection made from a motorcycle engine to a driveshaft made? Ive searched the net and seen a coupler that appears to go on the trans output side but what allows for the movement of the rear end?

Some sort of slip joint?

Title: Re: Motorcycle engine to driveshaft?
Post by: sockjohn on September 04, 2009, 12:51:26 PM

The only one I have seen was a Lotus 7 replica, and was basically a pillow block to support the end and a sprocket adapter.

Might see if some of the kit makers show photos of the parts online.

I'm not sure I really understand your question though  :?

Title: Re: Motorcycle engine to driveshaft?
Post by: ramjet on September 04, 2009, 01:21:51 PM

You use a driveline adapter on the out put shaft of the motor, then a U-joint then a driveline, with a slip jt. then another U-jt. at the rear end. Check out Dwarf Car Racing, on the web.

Title: Re: Motorcycle engine to driveshaft?
Post by: wolcottjl on October 27, 2009, 03:23:41 PM

Quaife makes some pieces for motorcycle engines in cars including a gearbox with reverse.

Here is one retailer that shows some of the units.

http://www.autotech.com/quaife/Motorcycle/cycle.htm?main=cyclecars.htm

Title: Re: Motorcycle engine to driveshaft?
Post by: Dreamweaver on October 27, 2009, 03:42:55 PM

Thanks guys, yall got me pointed to the right places.

Title: Re: Motorcycle engine to driveshaft?
Post by: Dakzila on October 31, 2009, 12:38:33 AM

Dreamweaver,

If the engine is mounted sideways you can use an automotive U-joint. Any shop that build Legend Cars can help you out with the adapt that mounts the U-joint to the tranny output shaft.

Buzz

Title: Re: Motorcycle engine to driveshaft?
Post by: Moonshiner on October 31, 2009, 01:00:41 AM

you could use a motorcycle engine that is shaft drive ,i have seen some home made trikes built using a modified miata drive shaft and the miata rear end , cost effective and works nicely .

Title: Re: Motorcycle engine to driveshaft?
Post by: mike mendoza on January 29, 2010, 04:12:54 PM

Quote from: ramjet on September 04, 2009, 01:21:51 PM

You use a driveline adapter on the out put shaft of the motor, then a U-joint then a driveline, with a slip jt. then another U-jt. at the rear end. Check out Dwarf Car Racing, on the web.

that's how i did it with my Dwarf car.   How about on a Harley?

Title: Re: Motorcycle engine to driveshaft?
Post by: Constant Kinetics on July 17, 2010, 10:44:26 PM

Quote from: Moonshiner on October 31, 2009, 01:00:41 AM

you could use a motorcycle engine that is shaft drive ,i have seen some home made trikes built using a modified miata drive shaft and the miata rear end , cost effective and works nicely .

There are some quick Yamaha maxims that are already set up to run shaft drive. The water cooled maxim x series had the genesis engine (dual overhead cam, 5 valves per cylinder, 10,000 RPM redline) makes over 100 hp stock and responds well to 4 into 1 exhaust, carb re-jetting, or turbocharging. There are also big 1100cc versions that are a solid platform to build with.

Title: Re: Motorcycle engine to driveshaft?
Post by: Tonerjockey on December 20, 2010, 10:24:00 PM

This is the way I do it:

(http://i219.photobucket.com/albums/cc204/Tonerjockey/V7%20Rebuild/Exploded.jpg)


Guzzi V7 Sport
YMMV
Alex