How to fix Hobbyzone Champ motor mount? HELP! - RC Groups
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Oct 15, 2010, 01:58 PM
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TheLeabres's Avatar

How to fix Hobbyzone Champ motor mount? HELP!

Hobbyzone Champ Motor Mount Broken - How to Fix part 2 (0 min 15 sec)

Hobbyzone Champ Motor Mount Broken - How to Fix (0 min 11 sec)

After dozens of hard nose plants, head ons into buildings, trees, goal posts, this is the result. I still love the plane and recommend it to all beginners. Get it from Hobbyzone directly, usually ships same day.
thinking of toothpicks and hot melt glue. don't have any CA on hand. anyone w/ ideas? tSee part 2 of the damage. Thanks.
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Oct 15, 2010, 02:02 PM
Xpress..'s Avatar
Take Medium Foam Safe CA, and glue it back down. Keep it away from the motor if possible.
Oct 15, 2010, 02:05 PM
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TheLeabres's Avatar
sounds a little risky. not that confident since i've never used CA before. will have to go to the local hobby shop tomorrow. what about two cut down toothpicks across in addition to the the CA? won't that reinforce?
Oct 15, 2010, 04:01 PM
DX5e fatal flaw- PM me!!!!
The problem with reinforcing with a toothpick is you end up with a point load from something stronger than the base material.

I did similar damage to mine, low-temp hot-melt glue or the foam-safe CA (not quite so instant that it's hard to use) or even some latex caulk will fix it right up. Almost any glue that won't melt the foam will work fine.

Hardest part is making sure you maintain close to the factory level of down/right on the shaft. It does not need to be perfect, just make sure it points down/right.

Oct 15, 2010, 04:12 PM
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TheLeabres's Avatar
guess i'll leave the toothpicks out. i fear that after this fix, the stress from future impacts will move past the "fixed joints" and create minute and then large visible cracks to the "firewall" and fuselage. if they made a cheesecloth-like material of fine carbon thread I could mold that in strips like a wallpaper and that would give it overall strength. they should make a noob kit for these Champs like shock absorbing front bumpers! Even stiff rubber bands sticking out would help! lol
Oct 15, 2010, 04:18 PM
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TheLeabres's Avatar
looking at the video, it also looks like even without impacts, repeated full thrust alone stresses the motor mount area partly due to the down-right thrust. I'm tempted to stitch a piece of balsa in there!
Oct 15, 2010, 04:38 PM
Xpress..'s Avatar
Just use a small drop of medium CA. It's more than strong enough, and it's light enough to not affect the CG.

Look for BSI Super Gold + (it's a gold bottle with a black cap- often times the hobby shop will have their logo at the top of the bottle).
Oct 15, 2010, 04:52 PM
DX5e fatal flaw- PM me!!!!
If you want to reinforce your sheet material idea is good, very thin balsa or even a few layers of glue-soaked paper would be quite sufficient.

When you reinforce, if you do it out of proportion you make damage next to the reinforcement even more likely.

Oct 15, 2010, 10:13 PM
It's just a plane.
ZackJones's Avatar
Gorilla Glue will work as well.
Oct 16, 2010, 09:29 AM
Registered User
I would use some 5 minute epoxy and be done with it. Just use what ever glue you can get thats strong enough to hold it that won't wreck the foam and be done with it. I use 5 minute epoxy to fix all my broke foam and if it breaks again it sure as hell won't break at that glue joint cause it's so strong.

This is what I use to fix any breaks in my foam planes.
Oct 16, 2010, 03:36 PM
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TheLeabres's Avatar
Fixed it with what the hobby shop salesperson recommended - UHU POR .

Worked just like the what the friendly guy said at the local hobby shop. Cured in about 30 minutes and stayed "bouncy" meaning it shouldn't crack like foam. should act like a stiff rubber tire on future nose plants, will anchor the motor strong enough that it flies like stock but will act better than stock on impacts! This adhesive is kinda like a stickier and firmer silicone and has very little smell.
Hobbyzone Champ broken motor mount foam fixed with UHU POR (0 min 18 sec)
Oct 16, 2010, 04:46 PM
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TheLeabres's Avatar
How the damage happened - with repeated crashes!
Hobbyzone Champ Crashes & Rough Landings part2 but FUN FUN to FLY (4 min 56 sec)
Oct 19, 2010, 11:32 AM
Registered User
I see where people in YOUR neighborhood set up these stupid net-like things right in the middle of runway too! Can't believe the nerve of them!

Next thing you know, there are loads of little kids chasing balls right where our planes should be!

Somebody ought to do something about this !
Oct 19, 2010, 12:30 PM
DX5e fatal flaw- PM me!!!!
I had to tell a guy at work to not park on the runway!

Hey, anyone make a remote-release simulated bird-poo dropper?

Oct 20, 2010, 12:31 PM
If in doubt, add accelerant
Lberry.88's Avatar
I like the title of the video- not sure i saw any landings as such!

He was a very understanding footballer though.

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