Hi wayne. The clutch is a copy of one made by 3rd Millenium Energy, who no longer offers them. They used to make them for the later Whizzers. Whizzer started making their own leaving the company with some left over. I purchased several on ebay for my bikes because I found the spacing of the pulleys was perfect for my Briggs bikes. My friend, John, builds Harleys, and does other machine work in a small Huntington Beach shop. I got him into building motorized bicycles about 20 years ago. I used to ride my red bike to a radiator shop in the same complex for a Christmas party. John would always come over and look at my bike until he made his own. A few months ago he rode my race bike with one of the auto clutches and had to have one. With them not being available anymore, he decided to make his own. We discovered they were just heavily modified Max Torque units. After purchasing the 5 or so bearings he still had to do a lot of machine work to duplicate it. He's going to make one more for me but I don't know if he will offer any for sale. He did say that he could not sell them as cheap as the mass produced ones. If he decides to, I will post it on the forum. I have several friends who would also like to buy one. They freewheel nicely at idle and hook up real strong allowing for fast take-offs. The first one I bought is still working well and I also have one on my 8hp Briggs bike with the same results.
Me too. Actualy, I have small machine shop, and I would like to lear more about this modification and learn to do my own. Please tell your friend that I will pay a generous price for drawings, pics or sketches and part numbers.
Yes, we love the 4 stroke rumble at speed. If you look closely at our jackshaft mounted clutches, you may notice the ratio is close to 1:1, which performs same as on the engine crankshaft. It also allows for a narrower overall width, so less pedal crank bending for clearance.
My buddy took a few months to duplicate the clutch mods because he did it while running his regular business. He says he will be making drawings, but I don't expect anything soon. So, I have another friend working on them. You may have to buy one and reverse engineer it yourself. The parts for the conversion are well over $100, and you know how expensive labor is. He's talking at an initial offering of between $300 and $400 each. Sounds like a lot, but consider the only other choice is a late Whizzer auto clutch that Quenton has to modify and upgrade starting at $125 for his work. With the price of the clutch and his mods, you're looking at around the same or more expense, and the whizzer clutches are about twice the size. When I get a chance, I'll post a photo of both clutches for comparison. I bought one of the late Whizzer clutches and have not had it worked on yet. I still plan to use it so I can compare the performance. I have the 3rd millennium clutch on four of my bikes starting about 6 years ago and the oldest one just shows modest wear to the drum. My race bike performed great at Willow and Grange without overheating. It had just the right amount of slippage and hooked up tight when needed. Also, Max Torque offers replacement drums, 4 different springs and 2 different weights for tuning. I'll keep you posted as we progress.
