Top-Flite .60 Corsair conversions:Glow to electric power & fixed to retractable gear. - Page 11 - RC Groups
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This thread is privately moderated by gtfreeflyer, who may elect to delete unwanted replies.
May 10, 2012, 12:31 AM
Put a bigger motor on it!
gtfreeflyer's Avatar
I decided to do a little maintenance on the Corsair in preparation for an upcoming fun-fly event at the field. I've noticed that the plane has less power than when I first tested it, so I decided it was finally time to make a proper series adapter to put between my battery packs and my ESC. The one I had was make of thin gage wires and the solder joints weren't the best and were beginning to blacken. I'm guessing that there has been a lot of power loss thru this set of wires.

When I first opened up the battery hatch to start the mods, as soon as I touched the wires going to the new BEC I put in, one of the solder joints broke loose! This was ready to break on the next gust of air it got. I'm lucky I caught that!

I ended up making a monster of a series connector. I used two parallel strands of 10 gage wire for each segment.

When I was getting ready to wrap up, I took a close look at my ESC and found that one of the leads from one of the two capacitors wasn't even connected to the ESC! I have no idea why I looked there, but I'm glad I did. I wonder how long I've been flying like this!?

I've taken apart my ESC so I have access to the circuit board. Now I need to buy a new capacitor.

More delays. Bummer.
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May 17, 2013, 05:16 PM
Put a bigger motor on it!
gtfreeflyer's Avatar
Still flying. I got a great new video...
RC Corsair Flight 5/14/2013 (6 min 30 sec)
Jun 07, 2013, 02:06 PM
Put a bigger motor on it!
gtfreeflyer's Avatar
Another video flying over the bluff...
RC Corsair flight along a bluff (6 min 8 sec)
Jan 14, 2014, 10:02 AM
Put a bigger motor on it!
gtfreeflyer's Avatar
Well last week my motor quit on takeoff. I wasn't even 10' up yet but I had pulled the gear up already. Not enough time to react, I opted for a belly landing, which looked nice and gentle from afar. Upon reaching the plane, I was shocked to see all the damage, and so was everyone else at the field.

The cowl broke off nice and clean which isn't a problem, but my main spar broke. I'm going to have to do some surgery in the future when I have time. The gear doors also ripped of since they had not closed at the time of impact.

Log book status: 7.1 hrs flight time, 78 landings, 70 packs flown.
Aug 07, 2016, 11:16 AM
Registered User
May 17, 2017, 03:43 PM
Always Ready!
warhead_71's Avatar
I know this is an old thread... just chasing down any data I can find on the SK5065 motor. I have one that I am putting in a 1/6 scale Sterling Stearman - should come in around 8-9lbs AUW. I plan to use a similar setup with 6S and 16x10 Turnigy wood prop. Already re-epoxied the magnets as a safeguard. Also notice some windings are a little loose so I'll weave some heavy thread around them to keep them in place. I'm guessing with the draggier biplane wings there's no point in propping up to 16x12 for speed, and I don't want to prop down for efficiency, since I'll be flying more scale/acrobatic I want plenty of thrust for climbing out. In your last post, you say the motor "quit". What happened to it?
May 17, 2017, 06:24 PM
Put a bigger motor on it!
gtfreeflyer's Avatar
Originally Posted by warhead_71
What happened to it?
Can't know for sure, but I'm pretty confident it was old batteries that had a large voltage sag on the full throttle takeoff, causing the ESCs to go into voltage cutoff protection mode. If I had throttled down, then back up, I may have been able to restart it.

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