Recent content by Bentwings

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    Canned air is extremely explosive...

    I’ve seen this done on big truck tires too. It’s a scary process.
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    Model Engine Ignitions

    We went to the point of economics limit. Much of drag racing was match races depending on number of cars an program to be run. The name of the game was to make all of your laps or runs to get paid. Often the two quickest came back for a final round for some extra money. It forced you to run hard...
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    Model Engine Ignitions

    Yes I drove top fuel dragster and funny cars but not the modern day ones. Even back then on a hard run the plugs would be burned off at the end of the run. Looking at them you could tell how bad the rest of the engine was. Burned pistons were common . We didn’t replace everything every run like...
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    Canned air is extremely explosive...

    Worked in a big truck shop building a race car for the owner. They regularly used carb cleaner, brake cleaner and ether starting spray to mount semi tires. Spray it and light it, boom tire seated. It’s amazing they didn’t blow themselves up. I stayed in the car shop while they mounted tires...
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    For Sale FS casting for Wright Radial

    Not sure exactly what you are asking . I look at it as 18 pairs or sets just as I might for a race car. I would make them as a machining project. Plan each move and tool used. Similar to what a cnc machine might be programmed to do. You may end up with some kind of holding fixture. Just another...
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    How do I model a supercharger rotor?

    I used a 6-71 on my Streetrod and drove it everywhere for 30k+ miles. Going down the road with two flow thru air cleaners in the big BDSacoop you could only hear a small whine. Standing along side idling again it was minimal. Mostly determined by how tight the belt was. Too tight made a little...
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    How do I model a supercharger rotor?

    I think it was noted above about the OS max and YS pattern motors of years ago. I loved pattern planes and flying them. Ironically it was one of the few sports I never won or excelled at. I always seemed to come up a point short at the end of the day. I eventually became way too expensive and...
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    How do I model a supercharger rotor?

    You should hear the noise a full size 8-71 makes when being driven 50% over crank speed wide open throttle even with full fire suit and ear plugs it’s deafening. My Streetrod could be heard blocks away the few times I got after it
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    How do I model a supercharger rotor?

    Those of you pursuing this project should go to a site that shows a rebuild or build assembly of a stock blower. There are seal areas between the rotors not shown on the models they are called the CC. Clearances. There is a spec for these it’s a common measurement we used to use to check the...
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    How do I model a supercharger rotor?

    I’m sorry instead of dump above I meant dyno. That makes more sense. Like I said I’m a hazard. Byron
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    How do I model a supercharger rotor?

    I want to add just a thought of my ultimate plans for this project. While we were into alcohol funny car racing the west coast hot shots began really optimizing the blown alcohol motors. On guy dug up and old dump used for really big industrial stationary engines . With some hot rod engineering...
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    How do I model a supercharger rotor?

    That sounds exactly what I was planning on doing. It’s been awhile since I’ve used solid works so I’m having to relearn some but it’s coming back. I have access at least for a while but eventually I’ll probably have to go to fusion 360 to stay up to date. I doubt we will get into cnc in our...
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    Ageless 9 and 18 Radial

    That’s nice work! Job well done! Byron
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    How do I model a supercharger rotor?

    After looking at the printed screw blower I’ve backed away from a similar thought. After seeing a couple of new v 12 enginges I think it would be a natural to add a 6-71 style appropriately scaled to one of these. There are countless YouTube stories of supercharging Briggs & Stratton engines...
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    How do I model a supercharger rotor?

    I know it would be an added expense but there are relatively inexpensive air fuel ratio stand alone gage systems available I had one in several of my supercharged streetrods. They were invaluable fore tuning. They won’t work long with oil in the fuel like a two stroke might have .the o 2 sensor...
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