Tim Cheal Posted July 23, 2012 Share Posted July 23, 2012 My son is completing an EPQ for his A levesl and has decided to build a powered aircraft. The project needs to be his own design and use a 'motor' that is homebuilt. I can work with him on the airframe design etc but he is looking for an electric motor that can be built from a kit. Anybody know of such a kit we could purchase to power a small (say 40 inch) RC aircraft? Tim Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted July 23, 2012 Share Posted July 23, 2012 I doubt that this or another of their products would normally be cost effective (especially with import duty etc). but it might fit your purpose? Quote Link to comment Share on other sites More sharing options...
Simon B Posted July 23, 2012 Share Posted July 23, 2012 Micron Scorpion kits As above, but UK based. Edited By Simon B on 23/07/2012 14:08:02 Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted July 23, 2012 Share Posted July 23, 2012 It's not very clear if they are kits or pre-built and if kits they may be for a very high Kv unsuitable for a conventional F/W model. Mind you, researching and documenting his own wire spec. to wind a lower Kv version might go down well...a call to the company might be useful. Edited By Martin Harris on 23/07/2012 14:23:59 Quote Link to comment Share on other sites More sharing options...
Simon B Posted July 23, 2012 Share Posted July 23, 2012 It's extremely clear: "Each kit contains the following parts: Assembled stator constructed from laminations with powder-coated inner surfaces to prevent winding shorts Gold Electro-coated Rear Housing/Bearing Tube assembly High-speed shielded ball bearings Rotor assembly with gold electro-coated front housing, black electro-coated flux ring, and pre-installed motor shaft with retaining collar Cross style aluminium backplate mount with mounting screws (not HK motors) Complete set of curved NdFeB motor magnets Heat shrink tubing to cover motor leads and provide strain relief To complete the kit, the builder needs to: Wind and terminate the stator Glue the stator in place on the bearing holder Install the bearings into the bearing holder Glue the magnets into the flux ring Install the completed rotor assembly onto the bearing assembly and secure the shaft with the retaining collar." There are links through to the motors showing different kV ratings, so you just need to find out the windings required. All the motors are around the 100-200w mark at 11.1v, which would be perfect for a 40" model. Edited By Simon B on 23/07/2012 16:24:22 Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted July 23, 2012 Share Posted July 23, 2012 Simon, what I couldn't decide was whether what they had in stock (very limited and probably unsuitable for the application described) were the kits or the pre-built versions (as suggested by the description on the page that linked to the HK versions they had in stock) - hence the suggestion for Tim to give them a quick call...sorry if I didn't make that clear. Edited By Martin Harris on 23/07/2012 17:05:57 Quote Link to comment Share on other sites More sharing options...
Simon B Posted July 23, 2012 Share Posted July 23, 2012 Ah right, i see. I agree he should give them a call, but a 100 - 200w motor would be fine for a basic 1lb 40" plane and the specs for the motors in the ranges will do this, the only variance being KV. Quote Link to comment Share on other sites More sharing options...
Tim Cheal Posted July 23, 2012 Author Share Posted July 23, 2012 Thanks all for your very helpful and speedy responses. I have just tried to call Micron Radio Control but was not able to speak to anyone. I shall try and get hold of them tomorrow to see if they have any kit versions. Your help greatly appreciated, along with any other ideas if anybody else has any. I wasn't sure what size either, but the 200w sounds like a good pointer. Would this need a 2S or 3S battery do you think? Thank you. Tim Quote Link to comment Share on other sites More sharing options...
Simon B Posted July 23, 2012 Share Posted July 23, 2012 for the size of plane i'd say 3s, unless it's a glider. Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted July 24, 2012 Share Posted July 24, 2012 ...unless it's a 5900Kv wind! That might need rather a small prop if you want to keep the magic smoke in! Quote Link to comment Share on other sites More sharing options...
Simon B Posted July 24, 2012 Share Posted July 24, 2012 EDF at that size would be fine! Quote Link to comment Share on other sites More sharing options...
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