Anyone know more about this twin engine bike?

[race]

Are those 820s? What frame / bike did it start out as? Interesting fork design.

Any pics of the other side? Would love to see how they handled the power train.

( Pic is from the 'Girls and Mini Bikes' thread #575 on p. 29 ).

 

[superflea]

Trail Tamer forks on a Steens 100 frame (Stretched) with 2 WB 820s

 

[race]

Anyone have pics of how they did the drive train?

I like how they mounted the engines fore and aft as opposed to the side by side Double Trouble bike ... which made for a rather wide mid section. You probably came off a little bow-legged after riding it.

 

[DaddyJohn]

That might be a cool idea for those cheap and plentiful Tecumseh 2-stroke snow blower engines that aren’t quite powerful enough to do the job on their own. Would also sound pretty cool!

 

[sparkwizard]

 

[sparkwizard]

That might be a cool idea for those cheap and plentiful Tecumseh 2-stroke snow blower engines that aren’t quite powerful enough to do the job on their own. Would also sound pretty cool!

Working' on it, Boss!

 

[Jim Donovan]

I have seen this set up before and they had the WB with 3/4" cranks in them versus the step crank. The 3/4" had the full 3/16" keyway and they used the double 12 tooth sprocket on both engines. Single chain going to the rear sprocket and the inner set of teeth connecting the two clutch drums. Lose one engine you still have drive to the rear sprocket. Just have to make sure both bushing are well lubed just incase this happens since under normal conditions the clutch drum only spins on the sleeve of the clutch at idle, once moving the shoes are locked to the drum and the clutch turns as one piece of steel and the bushing is non-functional which is why a needle bearing is not used because of cost and they cannot take heat above 250 degrees F. The crankshaft gets hotter than 250F.

 

[sparkwizard]

Thank you, @Jim Donovan . I was thinking about one clutch on the rear engine, two small sprockets connecting my snow blower engines, and only one starter to fire them both up. As usual, your experience makes too much sense!

 

[sparkwizard]

Who owns the bike, and where is his daughter, now?

 

[race]

Thanks Jim.

And I hope they went with Max Torque on the clutches. The bike could easily be putting out 20+ HP!

 

[Mark G]

.... two small sprockets connecting my snow blower engines

That reminds me. Somewhere buried in the barn I have a dual engine, 5hp Briggs powered old ass '70s Cub Cadet snow blower. The thing is dangerous AF, but a sight to behold when it's running. I'll try to find some time to get at it and see if I can get a pic or two.