Looks like it is Corvair power for my Vari-EZE

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Marc Zeitlin

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This fellow has some solid information...
Having read everything on that web page, and having interacted with him a number of times with respect to actually collecting data and interpreting it, let's just say that Mr. Camarda's statements about many subjects should be taken with a few grains of salt.

As Ms. Englert says "Either can work equally well in flight if it is done right."
 

dwalker

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Having read everything on that web page, and having interacted with him a number of times with respect to actually collecting data and interpreting it, let's just say that Mr. Camarda's statements about many subjects should be taken with a few grains of salt.

As Ms. Englert says "Either can work equally well in flight if it is done right."
I have never spoken to him, but I have a mutual friend/acquaintance that speaks to him regularly and they seem to get along.
Marc, I actually take all data with a grain of salt until I verify it for myself, and in general just run my own test program. I spent two decades in auto racing at many levels including vintage, club, and Pro, eventually owning my own team and working directly with manufacturers/engineers in various projects.
I literally cannot tell you how many times an engineer. manufacturer, or official told me something as "documented fact" that was not in any way shape or form accurate and not backed with data, and when presented with actual data it was ignored. I also got pretty good at sniffing out data manipulation.
I also very much hate it and instantly stop "listening" when people tell me the reason to do something is "because we always have done it that way".
 

Marc Zeitlin

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I also very much hate it and instantly stop "listening" when people tell me the reason to do something is "because we always have done it that way".
A good philosophy. The only time "because that's the way we've always done it" is a valid description of a process is when you're discussing the way that your grandmother cooked your Thanksgiving turkey. In all other instances, it's an excuse not to think and improve.
 

Hot Wings

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In all other instances, it's an excuse not to think and improve.
That depends on the grandmother's results ............. BTTWADI may even be the best reason to change the process. My mother would have been in that group. Learned a lot from her, but how to cook was never going to be on that list.
 

Vigilant1

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"We've always done it that way" gives little useful info except :"Here's the baseline process that can serve as a reference for any potential improvement."

But if you can find the person who knows why " we've always done it this way", it is possible there is worthwhile knowledge to be had just for the asking. Test the stated rationale if warranted, but knowing the rationale is useful.

Nobody lives long enough to make all the mistakes for himself.
 
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ToddK

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There are a lot of very stong opinions in the corvair camp regarding the rear starters used on one of the conversions. Do your research. I can't figure out how it could be that big a deal, but some whos opinions I think carry some weight do.
 

dwalker

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There are a lot of very stong opinions in the corvair camp regarding the rear starters used on one of the conversions. Do your research. I can't figure out how it could be that big a deal, but some whos opinions I think carry some weight do.
I choose not to get caught up in the WW vs Bill Clapp/the world drama. None of their opinions matter, only what they can prove out, with actual data. I'm especially suspicious when one vendor criticizes anyone that does the same but slightly different thing than they do, and/or discounts everyone else's experiences. I'm looking for technical data, not a new religion.
 

rv7charlie

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If you want to be a real heretic, install one of these, instead of that extra bearing. Lower stress on the engine due to lower BMEP, even with slightly more power output. Toughest thing might be getting a narrow enough ratio to run those small dia VE props.
 

dwalker

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Mar 6, 2021
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If you want to be a real heretic, install one of these, instead of that extra bearing. Lower stress on the engine due to lower BMEP, even with slightly more power output. Toughest thing might be getting a narrow enough ratio to run those small dia VE props.
Those are very interesting, and might be a good alternative to the Marcotte PSRU I was planning to use for the 13B Turbo.
 

Daleandee

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There are a lot of very stong opinions in the corvair camp regarding the rear starters used on one of the conversions. Do your research. I can't figure out how it could be that big a deal, but some whos opinions I think carry some weight do.
I gave my opinion on this (knowing that opinions are like armpits ... everyone has a couple that stink):
 

karmarepair

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Molt Taylor used cooling fans on his pushers. Need enough static pressure to flow for the horsepower required. Pushers have less pressure.
Chris Falconar's VW Conversion manual used a cooling fan as well for pusher installations, mounted Forward of the prop, from .100" Al, twisted to suit the airspeed. It also has suggestions for both updraft and downdraft baffling for pusher installations. I have no idea where you might buy a copy nowadays, as Chris has either retired or passed on. As of this date, there IS a source for his plans, Manna Aviation but the VW conversion information is not listed.
 
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