Richard Acland Posted August 8, 2022 Share Posted August 8, 2022 I need a bit of help regarding my ED bee engine. Although I fly mainly RC scale models I still muck about with free flight models. I have a vic Smeed Mamselle with an ED bee. It hasn't been running that well so I decided to give it a strip and clean. My question is the positioning of the backplate which carries the rotating inlet aperture. The positioning of the backplate when screwed in and tightened would appear to be critical and determined by the thickness of the backplate gasket. If it is not positioned correctly the fuel inlet would be in the wrong place. I can't find any definitive info, hardly surprising as this is a 1950s engine. Any help appreciated Quote Link to comment Share on other sites More sharing options...
PatMc Posted August 8, 2022 Share Posted August 8, 2022 IIRC the inlet tube should be top right looking from the rear of the engine. You can just about make out the position from this pic, Bee on the left Hornet, which has the same timing, centre. Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted August 9, 2022 Share Posted August 9, 2022 👍 plus 1 for top right looking from rear between 1 and 2 O'clock. Any deviation will affect the inlet timing and performance / srarting. I thought the ED Bee was too heavy for the Mamselle but if it flys OK then fine. The last Mamselle I built was very lively on a Mills 75 flying on rudder elevator rc. Great flying model. Quote Link to comment Share on other sites More sharing options...
Richard Acland Posted August 9, 2022 Author Share Posted August 9, 2022 Thanks for that. The positioning is not critical then, if between1 and 2 o' clock will suffice Quote Link to comment Share on other sites More sharing options...
Richard Acland Posted August 9, 2022 Author Share Posted August 9, 2022 She flies quite well with the Bee, maybe a tad overpowered, but I can lower the revs a bit. Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted August 9, 2022 Share Posted August 9, 2022 6 hours ago, Richard Acland said: Thanks for that. The positioning is not critical then, if between1 and 2 o' clock will suffice As already said the optimum position will have to be trial and error but between 1 and 2 o'clock it should run OK. Quote Link to comment Share on other sites More sharing options...
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