Looking for an impeller that will fit a Treco/Oberhausen supercharger. Sent from my iPhone using The H.A.M.B. mobile app
Really cool car. If you are planning to run it with the SCTA, the electric blower may be a problem. Hope to see it run anyway.
Hey, BT'47; Neat build. I see an alt. Are you going to be using that to power the T/O motor? If so, some of the later model Lincolns n other hi-end luxo-boats used a 2nd very-hi-output (essentially unregulated) alt to power the rear window defrosters/etc. Might be worth a look. Also, did these use the standard bushings for the armature shaft, or did they have sealed roller bearings installed. I wouldn't think that bushings would last very long if used for more than a few seconds at a time. Unless they have pressure oiling to them, which I don't see. Is the impeller missing? If not, how about some pics of the impeller along w/some measurements? & same for the insides of the T/O scroll/housing? W/o knowing what you've got to work with, I'd suggest a compressor wheel out of one of the Paxton variants. Another possibility (much better performance) is looking at compressor wheels from turbos. Large truck/bus stuff comes to mind. A WAG would be that the T/O c.w. looks similar to the Novi or earlier centrifugal superchargers that Miller used. (Fairly flat wheel w/straight tapered vanes.). Hope you find what you need. FWIW, clearances will make a big difference on the amount of boost available, vs just heating the air. Marcus...
Looks very cool. That supercharger steup is wild, I look forward to seeing more/hearing it run. What is the tank/tanks from? What will the canopy look like? Very cool project.
Graham built supercharged cars, if you can find a Graham supercharger (they designed and built their own) you could check if the impeller might possibly fit your supercharger.
I just re-read the rule book and Rich is on the right track. Because of guys trying some bs stuff to get into the blown cl*** where the record was open the SCTA did write in some clarification. Yours is a vintage item as I see it and advertising is available but you may need to prove a positive pressure. I would definately call on it. Perhaps it would be as ez as tateltail gauge. Good luck as it neat to see this older technology.
My thought was that the blower must be engine driven . Crank or exhaust. No aux power blowers allowed. No matter how cool they are.
I had the same idea a few years ago for the sidecar but I was quickly told that the blower must be crank or exhaust driven. The argument that the alternator that charges the battery that drives the blower is driven by the engine won't work.
Not true, if questioned during inspection by a knowledgeable inspector a decision can be made at that time. The chief inspector and many who work under his direction just don't look at safety but can ask an entrant questions on parts of his vehicle.
When I was at Bonneville in '72 someone ran a Harley with a heater fan and motor in a blown motorcycle cl***.
Few years back I put a Chrysler 440 smog pump on a Briggs 18hp engine in riding lawnmower, race mower,put a pulley on top of fly wheel v belt to the pump put motor cycle carb on ...Varied sizes in pulleys ..Mower had front and rear axles from Suzuki quad 3spd ,toro 3spd gear box it had a noticable power increase internals were stock...It was fun bombing around the yard.... Sent from my QTAQZ3 using The H.A.M.B. mobile app
A smog pump did produce a positive air flow and I saw one used at Bonneville on a small cc M/C engine too. But as stated by Rich it was mechanically driven by the engine. However when someone figured out that they were easily made into a vacuum pump their real purpose was found for the performance enthusiats.
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