'Back in the day' I won a sport proto event in Cleevland  with one. Cant remember time.  also used in TR. Still have it.

 the old B proto's could be flown one line or 2 line .one line being faster.  todays 21 proto can only be flown 2 line . takes all the fun out of flying it

Yes it probably is true. The .29 5224 is the linear descendent of the Enya mk 3 and mk 4 from the late 1950's and 1960's. Parts from the 5224 (mk 5?) will still fit the earlier engines which were popular for (Vintage) B Class team race. Certainly the earlier engines were timed differently to the 35 so it seems reasonable that the same was true for the later models.

Bob Allen has written the definitive article on the Enya .29 glows at: http://www.supercoolprops.com/articles/enya29.php

Those are fine articles, all of them on the SuperCoolProps website.

I don't know why but I feel this engine should go on a speed plane. I have it listed for sale in the classifieds but if someone in the speed community would like to have this engine, PM me an offer.

    Hi Bill:

    I saw several engine  reports re the Enya .29 engines and they were as follows: This was the IIIB  5103  Enya .29 engine.

    Test A said that it produced .7 hp.

    Test B said it produced .59 hp

    Test C was for the Enya IV 5224 engine and it produced .64 hp but could be pushed to almost .80 hp with lots of nitro.

    I am sure that there are many more modern engines that would better these results for racing. But in their day, the .29 engines were quite powerfull.

                                                                                        Good luck,

                                                                                        Frank McCune

My experience with similar with similar Enya 35's is that they're not as strong as they look.  All three had parts failures under routine use.  I think that if you press this engine hard, the end is near.

Use it for stunt.