CorvAircraft> RE: Re: CorvAircraft> Marvel schbler andzenithcarbs FOR TRACTORS

[Clare Snyder]

I was talking about the model A carbs - the Tillosons etc.

The original Corvair carbs have very small venturii and are very prone to 
icing, among other problems. I would not attemp to fly with them.
That said, I'm not a fan of long wet manifolds, so I built a short 
equal-length top-mount manifold to take a single large snowmobile carb 
(Tillotson HD) or Harley Davidson (Tillotson HD1) carb. Not too much out 
there lighter - particularly with the aluminum tube manifold..

The carb is zinc, like the cloat bowl and air horn of the corvair carbs, but 
without the cast iron throttle body.
----- Original Message ----- 
From: "Ron Milan" <ronmilan at verizon.net>
To: "Corvair engines for homebuilt aircraft" <corvaircraft at mylist.net>
Sent: Tuesday, January 01, 2008 2:48 AM
Subject: Re: CorvAircraft> RE: Re: CorvAircraft&gt; Marvel schbler 
andzenithcarbs FOR TRACTORS


Clare: I do not have the "original carburetors" here to look at but I do not
remember them being "cast iron".  I am sure that the air horns and the bowl
assemblies were aluminum, maybe the throttle bodies were cast iron, I will
investigate and notify the list, but in any case---these carbs sitting on
the stock intake logs were fairly prone to icing, not a desirable event for
aircraft use and they do not have any provisions for mixture control!  I am
sure that technology awards us with better Carb choices today!  Happy New
Year and safe flying to all, keep building!  Ron Milan
ronmilan at verizon.net




----- Original Message ----- 
From: "Clare Snyder" <claresnyder at rogers.com>
To: "Corvair engines for homebuilt aircraft" <corvaircraft at mylist.net>
Sent: Tuesday, January 01, 2008 1:58 AM
Subject: Re: CorvAircraft> RE: Re: CorvAircraft&gt; Marvel schbler andzenith
carbs FOR TRACTORS






Now, with all this talk of carburetors, I wouldn't think anyone would use
the old original carburetors that were cast iron, nor the tractor
carburetors that were iron.  Those things are very HEAVY!  I have a couple
of Model A replacement carburetors bought for a future project and they have
the same basic features, but aluminum.

** Aluminum, or ZINC?  Most were zinc castings - a bit heavier than aluminum
but a lot lighter than cast iron or brass.


 They are very light and parts are available to rebuild them.  I can get
photos if anyone is interested in the aluminum carburetor.  You can get them
on ebay for almost nothing.  Here is one that isn't exactly like mine, but
close:



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