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Gave me a good laugh this morning Whiz when I read what had actually happened to your wife's tissues!!
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and every time she dose I get a nasty look and a shake of her head. .
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Germany, SH, Lubeck
Joined Aug 2012
56 Posts
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Hello,
The ring around the shaft of the rotorhead is made of some copper tube and is 1cm long this coppertube is used as heatingpipe or waterpipe here in Germany, the diameter is 12*1 mm. The loops are made out of a brassplate wich is about 1,5 mm thick. |
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United States, HI, Hilo
Joined Oct 2012
299 Posts
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After quite a few successful orders I got bit by Aliexpress finally. Fortunately it was just a main shaft. Seems the vendor has disappeared and Ali has been completely ignoring the dispute and follow-up messages I've sent them for over 3 weeks now. It's one thing when you place a risky order from a new vendor and get fake tracking details and have them disappear. It was a small order so whatever, but to be completely ignored when Aliexpress goes on about how much protection they offer - that speaks volumes. The bottom line seems to be, if you order from Aliexpress and something goes wrong, too bad. The protection is just false advertising. |
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I blame the German weather...BAD DOG, TIGG!!!!!
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The Netherlands, ZH, Rotterdam
Joined Aug 2012
66 Posts
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Cooling the tail motor
Hi guys
Cooling the tail motor seems to work, I burned the first motor in about 30 flights, when I mounted the second motor I removed most of the plastic housing and made a heat sink out from i piece of an ancient motherboard. Note that I drilled a hole in the heat sink to match the hole in the motor on one side and also kept the wires from covering the hole on the other side. I was careful with the first motor, I mostly let the motor cool down after 5 minutes or so, but with this second motor (I have some more in stock now) I fly until the battery is empty, that's about 10 minutes. I don't know exactly how many flights I've got out of this motor, but a lot more than 30 that's for sure. Sure some motors last longer than others, but for now, (as others already stated) cooling seems to prolong the lifetime of the brushed motors. Regards |
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Joined Oct 2012
423 Posts
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Need some help on recent BL conversion....
Well, I've just installed my BL motor (4900 kV outrunner), with a 9T pinion, and Turnigy Plush 25 Amps ESC. I also have the Turnigy programming card.
To test, I set the throttle to 30% in the transmitter. When I move the throttle, the tail rotor starts first, then at about 20%, the main rotor starts up. 1. Why does the main rotor start at 20% (I have selected soft start, is this because of that?) 2. How do you set throttle end points? (The method outlined in the Turnigy ESC manual does not work, please give step by step instructions?) 3. What value should I select for the throttle in the transmitter, and why? 4. I attached the pinion after filing the edge of the shaft, by tightening the grub screw. Should I have used thread lock or something else on the shaft or grub screw? If you need any further information to answer me, please let me know. |
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