What an impressive and freaky machine. Someone — or more than just someone — has managed an engineering feat that is impressive in one section of my mind and strikes horror into another part of my mind. Part of me is wondering what just went down. Another part of me wonders, how is this possible or practical. Then there is that little part that says, let’s take it for a ride. In what is both fortunate and unfortunate for me is that this creative sickness rules my brain. This perfectly proves that I am not alone.
So what are we looking at here?
It’s beautifully odd. It is Engine-eeriely exact. It is somewhat deviant, and it is a little bad-a$$ at the same time. It is, of course, the chainsaw motorcycle. What I love is that there is a whole generation of people who grew up being told to think outside of the box. Boom — People, we have a crew of insani-acts who do just that.
Domette Chainsaw Dragster Bike
Who comes up with a drag bike that is powered by 24- 70 cc chainsaw motors? One the low-end that is 6.3 horsepower per engine, times 24-engines, for a whopping 151 horsepower. On the high-end that is 7.1 horsepower, times 24 engines or 170.4 total horsepower. It would be nice to see this on a dynamo. My mind immediately wants to know if there is horsepower bleed-off due to the coordination of 24 power units. On paper, it seems interesting. In real life, it is amusing. It becomes fascinating when your mind begins to wonder how all 24 engines work together to create motion. The answer is found in the pure genius of utilizing 12 separate drive belts.
- 24 Engines
- 150-170 estimated HP
- Max Engine RPM – 4300
- Connected via 12 drive belts.
Making It Work
In an electric motor situation, the combination of engines is less spectacular. Energy would simply flow to the collector that would then feed the power to the drive unit. In the Dolmette Chainsaw Dragster Bike the same thing sort of happens, though it has to be much more precise. The power from the engines is fed to the transmission, which then distributes the power to the gears and then to the drive unit. To accomplish this, the power had to be limited before it hits the transmission. This bike uses a Harley transmission. Chainsaw engines have high RPM, and the PS 7900 hits 6.3 horsepower at 13.5K RPM. That much RPM would likely blow the cover off the transmission — naturally I want to see that too. To solve that problem, the maximum engine speed is severely cleaved down to 4,300 RPM.
The Bottom Line
What I wanted to see was the bike in action. I thought the individual crank-start option was hysterical and nightmarish in a pit setting. I also loved the sound. Imagine being some soccer mom driving down the freeway in the minivan and hearing what sounds like an angry swarm of chainsaws approaching. The comical applications here are endless. The deviant side of me wonders if you could apply a long bar for sawing into moving vehicles in some twisted Mad-Max frenzy. The other possibility that springs to mind is could you apply a spinning digging drill as an option for tunneling. Think Mutant Mole Man meets Lex Luthor… hmmm.. I should stop there before the NSA gets suspicious.
Pull Starting is a Chore For This Crazy Motorcycle
A Short Clip of the Chainsaw Bike in Action