K-TRON 19 #1 Posted December 30, 2022 (edited) I picked up what I believe to be an O&R Compact III Chicken power bicycle engine. It was seized up when I bought it. I have since blasted and free'd it up. It will certainly need a lot of love. However what I am curious about is the recoil housing, and the manifold/muffler on this engine. All of the Orline/Chicken power bicycle engines I have seen had the common 'teardrop' O&R blower shroud. This one has the later boxy blower shroud. This one also has an odd exhaust manifold with a threaded end. This is the first I have seen a threaded exhaust manifold on an O&R. Is this engine just an odd combination of parts? There are no numbers on the engine anywhere, and sadly the one sheet metal shroud that would have had some stamped information is missing. There are no numbers stamped on the flats of the crankcase. Chris Edited December 30, 2022 by K-TRON 1 Mike in NC reacted to this Share this post Link to post Share on other sites
Wallfish 658 #2 Posted December 30, 2022 Those parts are original. It's a later model from Advanced Engine Products (AEP) that bought out O&R. It would have had a square recoil that was an improvement to the teardrop housing recoils. The exhaust was a tube that threads onto the manifold and thing they are the only tool with that feature. I have a complete one in an original box that got ruined by mice making a house in the box. Pee and crap all over it.. Think I posted a pic on here somewhere Share this post Link to post Share on other sites
K-TRON 19 #3 Posted December 30, 2022 (edited) Thanks! I was really scratching my head on this one, as I have a lovely Orline chicken power in my collection, and there are a LOT of small differences between these two units. I would love to complete this one, as I want to run two of them on my bicycle at least once! Also as a side note, I forgot to mention. There is no primer on the AEP bicycle engine. This carburetor was on this engine when I bought it, but there were a few other busted up carbs in a bucket of loose parts with it, and I wasnt sure which it had. Would this have had a primer carburetor? Also, if anyone has a type number for this AEP bicycle engine, can you please share it. I will need to hunt down the right parts for it at some point. Chris Edited December 30, 2022 by K-TRON 1 Mike in NC reacted to this Share this post Link to post Share on other sites
Wallfish 658 #4 Posted December 30, 2022 The AEP chicken power used a different gas tank that mounted above the engine on the handle bars so the carbs did not have or need a primer button 1 K-TRON reacted to this Share this post Link to post Share on other sites
tvenetis 0 #5 Posted December 31, 2022 I have a chicken power engine i am working on which has the square recoil on it and I was told it is a 13 b Share this post Link to post Share on other sites
