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Post by NorCalAirman on Apr 14, 2011 2:37:58 GMT 1
I bought a brushless motor, but the shaft that's installed is pointing the wrong way. There is another shaft included but I can't get the first one off the bell. I removed the set screw and clip, but it is not budging. I don't want to whack it with a hammer for fear of messing up the aluminum bell.
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Post by flydiver on Apr 14, 2011 2:46:03 GMT 1
Best not to use a hammer if you can avoid it. Use a (drill) press or vice and jury rig some supports with sockets or drilled wood.
Did you pull the motor apart? You should do that first.
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Post by NorCalAirman on Apr 14, 2011 2:59:07 GMT 1
Yes, I separated it. This is the motor I ordered: www.hobbypartz.com/alpha-480--1020kv--outrunner-brushless-motor.htmlBefore I rip things apart, what's the best way to mount and attach a prop? Could I leave the shaft in and use the other adapter? What kind of prop goes on that? Do you just tighten the cone down on the prop? My ONLY RC experience is the Super Cub, so be nice please. |
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Post by ginginho on Apr 14, 2011 10:37:26 GMT 1
Yes, I separated it. This is the motor I ordered: www.hobbypartz.com/alpha-480--1020kv--outrunner-brushless-motor.htmlBefore I rip things apart, what's the best way to mount and attach a prop? Could I leave the shaft in and use the other adapter? What kind of prop goes on that? Do you just tighten the cone down on the prop? My ONLY RC experience is the Super Cub, so be nice please. That has a similar mounting option as my KEDA. The 4 point round star thing in the picture with a nice blue ally spinner on can be screwed to the opposite end on the motor to where the shaft comes out (the motor mount cross is fitted to the shaft exiting end). This allows the motor to be mounted in reverse. The only thing you need to then ensure is that the shaft that runs through the motor has clearance inside your mount/airframe. You'll need to hang it out a bit anyway to balance the aircraft. I hope this makes sense. Be aware, if you snap the threaded mount (the one with the spinner on), they are not too easy to source, and aren't the cheapest part on the market. |
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Post by NorCalAirman on Apr 14, 2011 12:09:24 GMT 1
That has a similar mounting option as my KEDA. The 4 point round star thing in the picture with a nice blue ally spinner on can be screwed to the opposite end on the motor to where the shaft comes out (the motor mount cross is fitted to the shaft exiting end). This allows the motor to be mounted in reverse. The only thing you need to then ensure is that the shaft that runs through the motor has clearance inside your mount/airframe. You'll need to hang it out a bit anyway to balance the aircraft. I hope this makes sense. Be aware, if you snap the threaded mount (the one with the spinner on), they are not too easy to source, and aren't the cheapest part on the market. I got all that sorted and installed. Now what kind of prop should I put on it? That is a much larger shaft than the original SC had. |
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Post by flydiver on Apr 14, 2011 15:22:54 GMT 1
Get used to the fact that props are a PITA. They almost NEVER FIT ANYTHING!
Drilling, reaming, shimming, balancing, and swearing (at least in my case) seem inevitably to be required.
You get the size and type required for the motor (you prop for the motor NOT the plane - you select the motor for the plane) and figure out how to mount it with the adapters you have or will have to buy, generally the latter.
BTW-I bought a BUNCH of Hobby King collet adapters a couple years back to try out. Cheap, eh? Well, that's their best quality. Goes rapidly down hill from there.
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Post by ginginho on Apr 14, 2011 16:04:51 GMT 1
Get used to the fact that props are a PITA. They almost NEVER FIT ANYTHING! Drilling, reaming, shimming, balancing, and swearing (at least in my case) seem inevitably to be required. You get the size and type required for the motor (you prop for the motor NOT the plane - you select the motor for the plane) and figure out how to mount it with the adapters you have or will have to buy, generally the latter. BTW-I bought a BUNCH of Hobby King collet adapters a couple years back to try out. Cheap, eh? Well, that's their best quality. Goes rapidly down hill from there. Ah yes Fly, but the pain involved in fitting a non-stock one does mean that you tend to be a little more careful when bringing the bird back down to earth.  |
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Post by NorCalAirman on Apr 16, 2011 5:24:00 GMT 1
Lookin' okay. We'll see how she flies.  Still need a jumper to get power through the firewall to the motor. |
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Post by ginginho on Apr 16, 2011 11:08:52 GMT 1
Lookin' okay. We'll see how she flies. Still need a jumper to get power through the firewall to the motor. I can't tell from the picture if you've got a thrust angle built in, have you? It looks like you should be able to do it fairly simply by shortening a couple of the stand offs. As you say, looks good!  One other thing, it's worth considering lengthening the battery leads and mounting the ESC in the cowl, good for cooling. |
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Post by NorCalAirman on Apr 16, 2011 13:52:29 GMT 1
I can't tell from the picture if you've got a thrust angle built in, have you? It looks like you should be able to do it fairly simply by shortening a couple of the stand offs. As you say, looks good! One other thing, it's worth considering lengthening the battery leads and mounting the ESC in the cowl, good for cooling. There is some angle, not sure if it's enough. I was thinking of putting the ESC in the cowl, maybe affixing it to the motor mount with some zip ties. I still have to repair my landing gear before I can fly (and find a calm day), but hopefully soon I'll be posting a flight report. |
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Post by NorCalAirman on Apr 16, 2011 23:39:01 GMT 1
Holy CRAP this thing has some juice! I got it all put together, at least the electronics, and I was too scared to push it past 1/2 throttle indoors, let alone in my hand. Hopefully my flight report (crossing my fingers for tomorrow) won't involve a description of how my motor ripped the firewall off and I was left with a tail heavy glider.
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Post by tommy1800 on Apr 19, 2011 17:09:33 GMT 1
I just got this same motor for my cub, i haven't started putting it in yet, but you say it's pretty good huh? Let me know what prop you end up using. Oh, and what esc did you get? 30amp or 40 amp?
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Post by NorCalAirman on Apr 20, 2011 1:57:22 GMT 1
I used the 30 amp and I'll try it with a 10x6 GWS. If it explodes, I'll let you know.
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