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-   -   Mounting the Zenoah G-38 (https://www.rcuniverse.com/forum/gas-engines-142/10821833-mounting-zenoah-g-38-a.html)

R Verbael 11-20-2011 10:13 PM

Mounting the Zenoah G-38
Is there a perferred mounting orientation for the G-38?? I am installing a G-38 on a 12' Telemaster and the Sparkplug-on-top orientation seems to center the crankshaft best, keeps the fins and muff up in the airsteam better. Comments are most welcome.


Russ V.

w8ye 11-20-2011 10:15 PM

RE: Mounting the Zenoah G-38
That's the way I would do it.

Brian Smith 11-21-2011 06:04 AM

RE: Mounting the Zenoah G-38

+1. Good advise as usual from W8YE


That's the way I would do it.

Highflight 11-21-2011 07:49 AM

RE: Mounting the Zenoah G-38
The G-38 doesn't care how it's mounted. It'll suck fuel, start, and run in any position.

It's almost always mounted with the cylinder pointing down in scale applications, but that's mainly so that it will cowl in nicely and hide well for those scale applications.

For mounting in a big Telemaster, upright is just fine, although I don't think that it would matter from the standpoint of cooling. With the Telemaster, it'll be in the airstream no matter how you mount it so you will get equal cooling no matter what.

The single reason for probably mounting it upright with the cylinder up in the Telemaster is because it (the spark plug and cylinder) won't take the brunt of impact in a crash or nose-over. On the other hand, the prop hub/shaft is more exposed to the ground that way, so you can take your pick if you want to bend or break some fins in a hard nose-hit landing, or bend the crank.

Personally, what I would do is pick which way I think looks best on the Telemaster. Then if you can't make a good decision on that, all that's left is to flip a coin for your best method of mounting. ;)

Antique 11-21-2011 08:37 AM

RE: Mounting the Zenoah G-38
Mine weighed 19 lbs with the G38, landing was almost walking speed...Did not use the aileron boost tabs, worked well without them...

R Verbael 11-21-2011 04:41 PM

RE: Mounting the Zenoah G-38
1 Attachment(s)
I set this airplane up and flew it with a YS 120....it jumped into the air in about 30 feet and then took a full circle around the pattern just to get to altitude. The YS is a workhorse, but totally out of its league up front in the big Telly. So in goes a G-38.;)

w8ye 11-21-2011 05:45 PM

RE: Mounting the Zenoah G-38
Nice plane

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