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Hope some more creative people post photos.
The Shop
I built this from the ground up. Silencer came from newmann (thanks again).
I didn't like the plastic guide that screws to the number plate and made this guide bracket.
All while drinking a PBR, I Hot glued a used 5 gal paint stick to a 4" computer fan, gorilla duct taped to a clamp on style bendy umbrella holder so I could attach to my chair. I ripped some speaker wire off the by nines and hooked to fan and attached an emergency/exit light battery.
I had cool air for that whole night and the next day on the hill watching the pros and having a beers.
This is not a gorilla tape or hot glue commercial nor am I associated with either company. Any licensing agreements should be sent to my agent for review.
Don't hate
I also designed and made a heap of prototype parts for this little beasty:
It was my job though...
Long story short, these are the only true "turbo" cranks that I know of even though many companies have use the term loosely in the past. Some have cut slots in the crank webs, some have notched the halves like a saw blade and Eric Gorr even talks in one of his books about ones with little scoop like paddles epoxied to the webs that eventually disintegrate and destroy the motor. For those that have heard of them, most picture the ones in Gorr's book and are skeptical, but Eric and I have talked about these many times. He remembers seeing these when he tore down Lowell Thompson's mod bike for a protest from Larry Ward at LL's in the early 80's. He said they were so concerned about the cylinder being a 105cc that nobody else looked at the crank, when we saw it he covered it with a rag since it wasn't illegal and cleared Lowell's bike as legal.
In a nutshell, the crank halves are machined in a custom jig to create a centrifuge. The crank acts like somewhat of a "turbo" by creating vacuum in the center to help pull fresh air/fuel mix in. Then exhausts it directly up the transfer ports when they open to help charge the intake phase.
Pit Row
Here's a simple tool I made. Borrowed the idea after seeing some suspension techs in a shop using it. One can use it to remove the inner fork chamber cap on some KTM and Yamaha forks with the slots in them.
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