Twin Engine GSXR Land Speed Racer

[BeairstoRacing]

I figure there are some old bike enthusiasts here who might appreciate this kind of thing.

Bonneville veteran, Larry Forstall built this bike in the early 90's, he made a shake down pass on wet salt and it was put aside for @ 15 years. I had it shipped up to Alberta, we literally got it running the night before we had to leave for Speed Week. The first time I put it in gear and let out the clutch was on the start line. Larry built a solid bike, very stable and very cool. We found a weak link in the coupler for the 2 engines, that held us back. I made several shake down passes myself, top speed was 203mph at only 3/4 throttle, lots of wheel spin!! Its a cacklefest, the spectators love when we start it.

I scored a couple of new big blocks and decided to bump the pair of 1255's up to 1316cc each. We won't have it ready for Speed Week this year but I'm looking forward to returning it to the salt in 2011. Also Air Tech is building us a new body for it, so we can wrap it in something slippery.

Cheers,
Scott

[BLUETHUNDER]

Thats wild

[O.T.]

that is awesome you have to get some video of that thing for us.

[Superman II]

It cool, but how do you reach the bars?

[sportbikeryder]

It cool, but how do you reach the bars?

Good ?? Maybe it is old school lay down feet out the back style?

[popeye]

any close up picks that show how the engines are linked? Thats cool!!!!!!!!

[BeairstoRacing]

Good ?? Maybe it is old school lay down feet out the back style?

Yeah, its a bit of a stretch laid out on it. Footpegs are just ahead of the rear axle. Steering is quite limited, only 15 degrees per side as per the rules, which is lots at speed but a bitch to push around.
Added the roll cage padding because the frame was bruising my chest.
It shifts both transmissions at the same time but the pattern is backwards, 1 up, 4 down.

[BeairstoRacing]

Both countershafts are coupled together with 530 drag race chain.
We had some issues with the first idler / tensioner, it had an aluminium sprocket and we destroyed it on the last pass. We upgraded to a steel sprocket because I'd hoped to run it again last fall at El Mirage, but that fell through.
Now, it will get a new version using as large a sprocket that we can fit. There is a steel cover that fits over the coupler, I'm going to add a chain lube as well.

[BeairstoRacing]

Another photo of the Double.

[skelator]

props for something different ! that thing is cool

[knecum]

My friend Larry Forstall built that in the 90s, he just sold it last year.. Real cool project..

[Jay]

Are they 1052 lower ends? If not, you should put 1052 cranks in it so you won't have to keep replacing them.

[knecum]

Are they 1052 lower ends? If not, you should put 1052 cranks in it so you won't have to keep replacing them.

never an issue with the engines

[knecum]

never an issue with the engines

Maybe i did build the engines then

[BeairstoRacing]

Yes, they have 1052 cranks with Carrillo rods.