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Engine basics => Engine set up tips => Topic started by: David Ruff on April 12, 2018, 04:04:42 AM
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Anybody ever run one of these?
(https://i.imgur.com/4r4kA4Qh.jpg)
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Nice all around motor. Kind of the single bearing 'economy' version of the two bearing .29, .36, .40 series. And, you can mount a muffler. Known as the Mk. V. TS
PS us a quality fuel such as Powermaster 10/22, SIG 10/25, etc.
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I have two of the 36 versions the Mark V. Both were very satisfactory and didn't suffer much for the lack of a front bearing.
I see that yours in is a 29. I don't see why Duke bothered with that, other than to use up some 29 parks he make have had in his shop. 29's are generally only used for B Speed or B Free Flight. But a medium performance engine wouldn't do very well in those events.
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Wasn't there a Rat Race event back in the 1960s-70s where 29s were used?
Richard Entwhistle has a NIB 29 Mk IV listed for sale in the classified section. Maybe he has some more info:
https://stunthanger.com/smf/classifieds-92/five-new-fox-combat-specials/
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Yeah, guys like Pat King were using enya 29's for that rat race stuff. I personally love 29's. I'd use a fox 29 over the 35. I have no idea why and no evidence to try to make a case of why that's a good idea. I just love small engines flying big planes.
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One thing I will mention, I know I've had this happen on MKV's and a iron piston .40 is that the wrist pin keepers like to come out. I would take a good look at it to see if it's engaged well if the engine is new.
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Here is a nostalgia view. In our area, Dist. II and III the fellows in south Jersey revived the B-Team race event maybe in the late 70's. We had fun with it. Like the original event the engine limit was .29. All kinds of motors were used. I built one with a S-T .29 RV and my pal John powered his with an Enya .29. Both were competitive. I designed my next plane around the Fox .29 MkIV. That motor handled very well and got 40+ laps on one ounce at around 100mph. The NCLRA got ahold of the event later and restricted displacement to .28. Maybe to keep out a Nelson? The event developed until the planes were at 120+ and interest died. Can you imagine what one would have done with the GO .25!!
Since this is nostalgia and as a footnote........ I had a chance to go to the nats in 2003 and re-engined my TR with a Nova Rossi .20. It performed well at a solid 100mph and good laps and we made the final. The final was a complete disaster with a pit collision, one wrecked model, one heavily damaged and one intact. While the judges were busy deciding how to proceed my pit man and I hastily repaired my plane. Memory fades a bit but I think they decided to restart the race where it was with the two surviving entrants. Or maybe it was a complete restart. Our plane ran perfectly and our opponent not as perfect but still a good fight. In the end we won the first 'modern era' TR event with a plane that had been largely forgotten hanging in the garage for ten years!! Never got back to the Nats. TS
Hope I didn't hijack this thread too bad.