stunthanger.com

Engine basics => Engine set up tips => Topic started by: James C. Johnson on July 10, 2009, 09:07:26 AM

Title: Super Tigre ID help
Post by: James C. Johnson on July 10, 2009, 09:07:26 AM

Just trying to figure out if anyone knows what this engine could be.. a 35-40 from 1962-63? And it's run characteristics. The porting has three openings for the intake and the exhaust. ST info is pretty spotty on the web.. I know some one knows something..

Jim

(http://imgs.inkfrog.com/pix/campsurf/STG21_(4).JPG)

(http://imgs.inkfrog.com/pix/campsurf/STG21_(6).JPG)

(http://imgs.inkfrog.com/pix/campsurf/STG21_(8).JPG)

(http://imgs.inkfrog.com/pix/campsurf/STG21_(9).JPG)

(http://imgs.inkfrog.com/pix/campsurf/STG21_(16).JPG)

Title: Re: Super Tigre ID help
Post by: Ralph Wenzel (d) on July 10, 2009, 09:48:51 AM

What's it say under the homebrew exhaust gadget? That might be revealing. You're guessing pretty close on the '62 - '63 timeframe; and it's almost certainly a .29 or .35.

Title: Re: Super Tigre ID help
Post by: James C. Johnson on July 10, 2009, 11:22:18 AM

Well slap me naked and hide my clothes... it says 35.. I couldn't see it with my glasses and used a magnifying glass.

Now do you think this engine will work as a stunt engine... I may pass it on and get something a wee more friendlier instead knowing that this isn't a "flat topped piston".. I have a feeling that I shouldn't even try .. I do like the exhaust ... and it is a nice engine.

Thanks Ralph

JJ

Title: Re: Super Tigre ID help
Post by: Ralph Wenzel (d) on July 10, 2009, 02:04:29 PM

If it has good compression and bearings, it'll make a dandy stunt engine. The baffle-piston might allow a 4-2-4 run, but you may be limited to a fast/slow 2-stroke run. Figure on standard stunt fuel (25% Castor), as the engine is the older "steel piston/cast iron liner" technology, although it should respond well to a bit more nitro.  I'd suggest am 11-4 prop to start, perhaps trimmed to 10½" after testing.

Title: Re: Super Tigre ID help
Post by: Paul Smith on July 10, 2009, 03:25:17 PM

I'd say it's older than 1962. 

By then, the front plate had been eliminated and only the back plate was removable. 

Engines like this were rare in the USA, it might have been brought in by an individual.  The bulk of engines imported by World Engines just had backplates.

Title: Re: Super Tigre ID help
Post by: James C. Johnson on July 10, 2009, 04:33:42 PM

It could be as old as 1957 from some of the reading I have been doing..

I found a 35 that is actually a .33 in displacement from 1952
and another that is a .35 from 1959 listed on the ST Chart on the Antique Modeler site. The first G-21 was a .29 and made in 1951.

This one is listed as 1963 and has not pressure fitting on the bottom.
(http://i1.ebayimg.com/02/i/000/fe/be/37d8_1.JPG)

So I suspect this might be made from 1959- 1962..

Thanks for the info
Jim

Title: Re: Super Tigre ID help
Post by: Bill Little on July 17, 2009, 01:56:19 PM

Pull out the carb, get a venturi (restrictor) made to replace the carb, and give it a try.  Being of that age, and being a baffle piston, I am guessing that it would work fine as a stunt engine with 5% nitro/25% (or more) all castor fuel and a 10-5, or so, prop.   I would be willing to surmise that the timing with the baffle piston would lend itself to a decent 4-2 *old timey* run.

Mongo