H62 rotors

[shawnrandolph]

Okay I got 1 day left of my mastercam training done to get my associates certificate and I was bore in the hotel room 150 miles from my family so I started thinking of making high helix m62 and m90 rotors. Up to 180* helix like the h62. I have a 4 axis cnc back at the shop.
Would you guys be interested in this at all? It would be less than half the cost of a tvs for a set of rotors to be made all out of billet aluminum.

I need demensions but this is the idea
Stock

Modified helix

[laser_racer]

That is really cool. How long did it take you to make those?

[recaro86]

Great Idea for sure, but man the tolerances on these is unbelivably tight (I'm guessing you already know this) but the rotors of a supuercharger are nothing short of artwork. I would gladly send you a set of rotors if I had some to see what you could mill. I don't know if you could ever make them cost efficient either; 2 cylinders of aluminum like that would be 2 hundred bucks plus your time I would have to think.

[shawnrandolph]

Originally Posted by laser_racer

That is really cool. How long did it take you to make those?

About a hour but keep in mind its just for visual purposes. I need to take my spare rotors to work to be digitized for all the demensions and radiuses.
Then they will be redrawn to size and demension.

I would also like to see what people think of a 4 lobe instead. I think they would not work as good due to less air being able to get pulled in but then it would be 2 more pulses of air per revolution so IDK
Any more info or ieas will be appreciated

[laser_racer]

I would imagen they would be made of a stronger material then aluminum. Also some cnc machines are really really good. After the first set he would be for sure know if they work or not.

[shawnrandolph]

Originally Posted by recaro86

Great Idea for sure, but man the tolerances on these is unbelivably tight (I'm guessing you already know this) but the rotors of a supuercharger are nothing short of artwork. I would gladly send you a set of rotors if I had some to see what you could mill. I don't know if you could ever make them cost efficient either; 2 cylinders of aluminum like that would be 2 hundred bucks plus your time I would have to think.

im assuming $200 per rotor for material and about $300 for my time and mill time plus design time. If material is cheaper than the overall price will reflect that. Not tryin to get rich off them just trying to give peope a resonable solution other than the tvs.
This is with dyno comparisons though so people can see the gain for sure on paper. No gain and they will be redesigned or not made at all. I refuse to sell them unless I can make sure they will be reliable and there is a proven performance gain.

[shawnrandolph]

Order Aluminum 6061 Round in Small Quantities at OnlineMetals.com
its looking like $300 for 2 bars

[shawnrandolph]

So I might be able to do them for around $600- or a little more depending on cycle time for the CNC. I would be hppy with that if they picked up like 20-30 hp.

[recaro86]

IMOP, if they could be made to make work, even a 10-15whp gain would warrant the purchase. This shall be interesting, lots of claims, no one ever sticks them out. Keep us informed.

[armcclure]

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