Big Kev Posted September 9, 2013 Share Posted September 9, 2013 Guys, Been meaning to get to asking about this for a while. The N3 appears to have been built around the half vw in its various guises. However I'm pretty sure I've seen them with Rotax 447 and 503. Could a 503 and 3 blade be fitted in place of the half vw? It would be a 10 reg. Cheers Big Kev Link to comment Share on other sites More sharing options...
facthunter Posted September 10, 2013 Share Posted September 10, 2013 I would have thought it would be adequate. Won't sound as nice though. You would want to hope there is a bit of weight down the back you can remove as the rotax will be a bit lighter. Nev Link to comment Share on other sites More sharing options...
billwoodmason Posted September 10, 2013 Share Posted September 10, 2013 What about a 1600 jab motor - ample power (60hp), and sounds like a real aircraft engine. Weight would be similar to 503 rotax etc. There is a niche market for these older engines in single seat 95.10 reg. aircraft. 1 Link to comment Share on other sites More sharing options...
facthunter Posted September 10, 2013 Share Posted September 10, 2013 Rotax are not making spares for anything other than the 582. Nev Link to comment Share on other sites More sharing options...
503 Posted September 10, 2013 Share Posted September 10, 2013 Surely there will be cranks pistons etc for years to come,or I'll have to change my name to 582 1 Link to comment Share on other sites More sharing options...
Big Kev Posted September 13, 2013 Author Share Posted September 13, 2013 Thanks Guys. The Mosler is about 80 lb. Ideally I'd fit a 1600 vw but that's twice the weight and would definitely upset the balance........ I guess my question is, with all the other interesting licencing stuff that has gone on recently, would it be legal? I fit in OK despite being 198cm, but it would be always operating very near mtow, so I was after some spare thrust. Link to comment Share on other sites More sharing options...
Keenaviator Posted September 13, 2013 Share Posted September 13, 2013 Doesn't Hummel produce a half VW? Laurie Link to comment Share on other sites More sharing options...
Guest Mark_hwltt Posted September 13, 2013 Share Posted September 13, 2013 The for runner to the N3 - the J3 kitten had a 502 but was under powered so the N3 was powered with the Global then the Mosler - hard to beat the Mosler for economy , spares . No Spares for the J1600. I went thru the exercise of different engines with my N3, but decided in the end the Mosler was a good fit. About the only thing I would like to do would be the upgrade from Hummel Engines ( longer throw crankshaft, bigger piston's and Cyl's) some machining of the cases would be involved. Link to comment Share on other sites More sharing options...
pylon500 Posted September 17, 2013 Share Posted September 17, 2013 would it be legal? Being a 95:10, you can pretty much do what you want. Would be a good idea to keep under the manufacturers MTOW, but check up to see if the is a structural MTOW, or just a legal MTOW for the US? J3 kitten had a 502 The J3 Kitten was originally designed for the 277 under FAR 103, but could take up to a 503 (or equivalent) if registered (in the US). Remember, the Mosler 4 cylinder version of what is really a VW, only put out about 50hp (bit less than a 503) The Mosler 2 cylinder was lucky to put out 30hp, and was heavier than a 503. Some people are just afraid of two strokes, and want to believe they can get power from a four stroke...... sad. Link to comment Share on other sites More sharing options...
Robert Posted September 18, 2013 Share Posted September 18, 2013 Some people are just afraid of two strokes, and want to believe they can get power from a four stroke...... sad. I think the biggest advantage with 4 strokes is their fuel consumsion compared to 2strokes Link to comment Share on other sites More sharing options...
Big Kev Posted September 18, 2013 Author Share Posted September 18, 2013 As an Engo I can see both sides of 2 and 4 stroke argument. With the N3 I'd be after the best power/ weight ratio I could get. Ideally, I'd go for more torque and lower revs of a standard 1600 VW, but sticking 160lb on the poor mite would kill it. A big block Mosler (94mm x 86mm) would do the job admirably, I'd imagine, but I'm a wendy as far as hand cranking goes, so there is weight to be added. Link to comment Share on other sites More sharing options...
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