I have for a while battled with a Graupner electric ducted fan pod, Graupner # 1374, that is designed for 600 motors (like the Graupner Speed 600 BB), and have previously tested a similar fan (Graupner # 1379) which is designed for 400s. I modified one of my 400 fans for one of my Aveox 1114/4Ys, just needing to drill out the collet to take the slightly thicker shaft of the Aveox. Worked OK, but I figured out that fitting such a motor to the 600 size would be a much better idea. The design is neat, made out of CF epoxy with a 5 blade rotor and a four blade stator (seven stator blades on the 400 size). Rotor diameter is 58 mm for the 400 and 75 mm for the bigger unit - the smaller weighs just over an oz and the bigger less than two! The motors are fitted to an aluminium 'lid' that screws into the centre of the rotor, and the cables are supposed to go out at the sidem but I run mine out the back (three power cables, plus the five for the control electronics, takes quite some room)! I sawed a slit in the nacelle and the centre body so I can run the cables out behind each other in an orderly and low-drag fashion. With eight 500AR cells and the smaller one consumed about 12A, while the bigger has not yet been tested with an amp meter, but the static pull is amazing! With more cells it would run even better, but I'm afraid it might desintegrate! I first used one of the microprocessor-controlled ESC, but nothing happened, it blinked one with its red LED and that was that, so I now use an oldfashioned one, twice as big and much heavier! The 600 fan fits to the 1114/4Y very well, but you have to drill new holes for the securing bolts in the aluminium 'lid' and do the previous mentioned cut for the cables! Glory to Dremel cut-off wheels! And a slight enlargement of the lid's centre hole to fit the front bearing housing on the 1114/4Y - I think the 1000 series would fit as is - but I have none to try on! The advantage with using a thinner motor is that cooling air has ample access thrpugh the cooling holes in the lid and similar holes the rotor's centre :-)! Very well though out! I'll test it later with a Kyosho car motor! If the ordinary cansized Aveoxes had a 3.2 mm axle I would try those, but alas, there is no chance that the fan-securing collet of the bigger can be drilled out that much! So one duff Aveox L60 ESC ... But a great fan! Will be test flown on a Zagi THL and then migrate to a Mongo Jr, together with the other one! And the batteries will be 2.5 Ah Nimhs or RC2000s - much better endurance! This will be fun! Eventually the powerplants - together with the ESCs the Mongo Jr, et cetera, will become part of a Beriev Albatross (Be-40 ?) or Be-200, semilscale flying boat :-)! Tord, Sweden -- If reply difficulties - use [EMAIL PROTECTED] Tord S. Eriksson, Ovralidsg.25:5, S-422 47 Hisings Backa, Sweden RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
