HobbyKing CL-415 Canadair 1390mm wingspan Foam Kit - Page 78 - RC Groups
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Feb 10, 2013, 03:27 PM
Great Southern Land
Berkie's Avatar
Thanks Jim.
It seems "just spraying" the ESCs with Cx has not been enough.
The ones I'm installing now have been soaked over night then sealed around the heatsinks and shrinkwrap with heat conductive silicone

Kev
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Feb 10, 2013, 03:59 PM
Has Sloped Off
dav3uk's Avatar
Quote:
Originally Posted by Berkie
Thanks Jim.
It seems "just spraying" the ESCs with Cx has not been enough.
The ones I'm installing now have been soaked over night then sealed around the heatsinks and shrinkwrap with heat conductive silicone

Kev
Sounds like a good plan

Dave
Feb 10, 2013, 08:09 PM
bwoollia's Avatar
I put a firewall in mine, however I just glued them to the existing surface. I've only run mine on snow so far, so I don't have any issues with corrosion. I've put my ESCs in the fuselage anyways.

I'm running these motors in mine, I've had very good experience with RC Timer motors, these pull just under 300W together both with the stock props and APC 8X4 SF.







Latest blog entry: Crash Compilation
Feb 10, 2013, 08:29 PM
Great Southern Land
Berkie's Avatar
Nicely done!
I can see how the firewalls would keep out the water.

Have you done enough flights with her though to confirm ESCs in the fus. are not overheating? Do you use heatsinks on them?

Kev
Feb 10, 2013, 08:50 PM
bwoollia's Avatar
Quote:
Originally Posted by Berkie
Have you done enough flights with her though to confirm ESCs in the fus. are not overheating? Do you use heatsinks on them?

Kev
Well, they're 40A ESCs and each motor is pulling only about 15A, plus I've never flown it when it's been warmer than -5C so it really hasn't been a concern yet. I'll let you know in May...
Latest blog entry: Crash Compilation
Feb 10, 2013, 10:59 PM
Parkcityflier
parkcityskier's Avatar
Quote:
Originally Posted by Berkie
Nicely done!
I can see how the firewalls would keep out the water.

Have you done enough flights with her though to confirm ESCs in the fus. are not overheating? Do you use heatsinks on them?

Kev
Just so that you understand my motor/ESC setup, I made the chin scoops functional by hollowing them out. I did this to aid in ESC cooling as I felt that the firewall could hinder some airflow through the nacelle. So, it is probably likely that I do, in fact, get some water passing through the nacelles, too, and over the ESCs but since I have treated the ESCs with the CX as described I have had no problems with over 100 flights on the plane, and often in very choppy water, which this plane handles very well. Good luck with yours.

Jim
Feb 13, 2013, 12:17 AM
Registered User
Griphin's Avatar
I've cut off the front of the nacelle to make a removable cowling for access to the motors. Works simple and use magnets to hold it on.

I think I'm going to have to put in a firewall to put in X mounted motors too.
Feb 13, 2013, 03:20 AM
Great Southern Land
Berkie's Avatar
Quote:
Originally Posted by parkcityskier
Just so that you understand my motor/ESC setup, I made the chin scoops functional by hollowing them out. I did this to aid in ESC cooling as I felt that the firewall could hinder some airflow through the nacelle. So, it is probably likely that I do, in fact, get some water passing through the nacelles, too, and over the ESCs but since I have treated the ESCs with the CX as described I have had no problems with over 100 flights on the plane, and often in very choppy water, which this plane handles very well. Good luck with yours.

Jim
Thanks Jim

Kev
Feb 16, 2013, 07:19 PM
Registered User
I went with the idea from an earlier post of cutting off the front of the nacelle and mounting a firewall. Then glueing the nacelle nose back on. I measured the motor from mount base to back of the prop. Then I added the thickness of the
1/8" ply firewall, and then I added about 1/8" for prop clearance. Turns out that measurement is exactly the same as the top of a Testers spray paint can top in this particular case. I then took my razor saw and held it down flat on the paint can top. The I took the nacelle and held it down nose first to the bench while sawing all the way around holding the saw to the paint can top. The results were perfect. I did mark each pair A's and B's so I don't get them mixed up. Then I hollowed out the nose section of each one. Then I took each nose section and traced the inside on 1/8" ply to make my firewall. I left a section open at the top for the wires. Once again I marked them A and B. This way the nacelle front will sit around the firewall and match up to the rear without making a firewall ply "sandwitch" in between. Now I have to decide if the speed controllers will be in the nacelles or the fuselage.
Mar 02, 2013, 10:27 AM
Takeoff=Option Landing=Must
robusp's Avatar
Finished mine today. Got a coat of minwax on a whole plane and filament tape on bottom of fuse.
I went with esc's in fuse, motors on stick mounts. Cut away more than a half of water rudder.
Had a hard time to get CG in the right spot, until I moved the esc's way forward.

I will maiden her today on snow. Will let you know how it worked.

Rob
Mar 02, 2013, 04:36 PM
Takeoff=Option Landing=Must
robusp's Avatar
Maiden was good.
I was surprised, how easy it was to taxi on the ground. I was afraid, problem would be with it leaning to one side, but soonest it started moving it leveled of and stayed that way.
It flies slow extremely well and that's big plus.
I am planning on flying it in the summer in the same pond we have sailboat regattas and the place is rather small.
Steering on the ground is good too. It helps I have rudder mixed with throttle and the motors are on separate channels.
With 1600kV cd-rom motors and 6x4 props it has plenty of power, but nothing extreme. I flew two 2200mAh packs for 7 min each.
I only wish it wasn't made from eps.
Rob
Mar 02, 2013, 04:53 PM
AP-stick
ggtronic's Avatar
Quote:
Originally Posted by robusp
Maiden was good.
I was surprised, how easy it was to taxi on the ground.
Rob
congrat i really like the color sheme... nice spinner !

also agree with easy ground handling using differential
throttle...

any video ?

CL415 fpv (0 min 48 sec)
Mar 02, 2013, 05:10 PM
Takeoff=Option Landing=Must
robusp's Avatar
Color scheme might be nice, but I bet you didn't see the white one up close.
Awful chalky white paint. Its better now, after a coat of minwax.
No no video. Too cold as it is. (it was 25F)

Rob
Mar 02, 2013, 06:51 PM
Great Southern Land
Berkie's Avatar
Quote:
Originally Posted by robusp
Finished mine today. Got a coat of minwax on a whole plane and filament tape on bottom of fuse.
I went with esc's in fuse, motors on stick mounts. Cut away more than a half of water rudder.
Had a hard time to get CG in the right spot, until I moved the esc's way forward.

I will maiden her today on snow. Will let you know how it worked.

Rob
Wow! What a great finish to her!
A $35 kit that looks a million $$'s

Kev
Mar 02, 2013, 07:07 PM
AP-stick
ggtronic's Avatar
Quote:
Originally Posted by robusp
Finished mine today. Got a coat of minwax on a whole plane and filament tape on bottom of fuse.Rob
minwax ? can you gave us a link ?

i was looking for a light clear glase in the past : WellBound... not so good
you may have found something good for us...


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