rrudytoo
Posts: 676
Joined: 12/23/2002 From: Simpsonville,
SC, USA Status: offline
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PJ, Thank you so much for giving the P-39 some serious consideration. I've mulled over the mid-mount position for the engine for a while and was fortunate to talk with a fellow who did just that. In fact, he was featured in Model Airplane News a couple of years back when he drew up his own plans for a P-63 and made up his own drive shaft. He used a Moki 2.1 that, of course, runs on FAI fuel which burns cooler than does nitro fuel. Utilizing the full scale's carb air intake behind the canopy, venting around the exhaust stacks and the cooler doors on the underside of the wing center section may just be enough to do the job. The heatsink head has merit. Does anyone make one for a Moki? This gentleman noted that he used a woodruf key to drive the prop shaft and with his Moki's propensity to kick back during starting it damaged the shaft on more than one occasion. I don't know what the solution to this would be other than using a different method other than the aforementioned woodruf key or the use of an electric starter. Frankly, I haven't experienced this "kick back" to where I thought it would damage anything. Just some considerations. I would definitely be interested in the mid-engine design. Depending upon the scale you choose (I personally would like to see something around 85" to 100" , there may be an offering from Robart already on the shelf. They have special order OEM gear for the Consolidated P-39 and the Palmer Plans P-63. I've had good luck with Robart gear but if Darrell at Sierra Giant Scale could make up something I'd be placing yet another order with him. Hey, if you're going to do something, do it with the best, right? But, for a weekend flyer with no contest pretentions, "functional and affordable" sounds GREAT! Anyway, that's my dos centavos. Al
< Message edited by rrudytoo -- 3/8/2008 3:48:03 PM >
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To wives and sweethearts. May they never meet.
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