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HelicopterMiniature Aircraft Whiplash & Fury 55 › SB16 muffler mount problem
09-08-2003 12:33 AM  14 years agoPost 1
sincity

rrVeteran

Pasco, WA

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I have the Hatori pipe mounted on my Extreme and I am having a bitch of a time keeping it tight. The mount is a lot like this one

Problem is that damn set screw won't stay locked down on that shaft. I've tried a crap load of red loctite and it still comes loose after 2 or 3 hard flights.

Any ideas how to make it work better?

Shawn

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09-08-2003 12:42 AM  14 years agoPost 2
furyextreme

rrApprentice

USA

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if you could double set screw it should stay tighter,dont know if you could do it on the hatori but definitly on the one MA sells from
Performance Specialities
Also check balance on everything for vibrations and make sure the o-rings are good and the muffler put on square

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09-08-2003 01:20 AM  14 years agoPost 3
sincity

rrVeteran

Pasco, WA

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Yeah, it is that one from MA actually. The screw goes in from the back of the mount. I need to find another set screw that size. It's pretty big compared to any others I've used.

Know where to find one?

Thanks,

Shawn

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09-08-2003 01:58 AM  14 years agoPost 4
Dr.Ben

rrMaster

Richmond, VA, USA

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The set screw is plain ole metric, and you can get one like it at Home Depot and the like or from a dealer like Ricks. Check something, though. See if your rod is aluminum or steel. If it's ali, get a steel one from Perf. Spec. The main reason the set screws loosen up is that the ali is too soft, and the tip of the set screw wallows out the set point in the aluminum for the screw. When that occurs, the screw immediately loosens up. And loctite doesn't help a bit, either.

Ben Minor

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09-08-2003 03:51 AM  14 years agoPost 5
Optech

rrKey Veteran

San Diego, CA.

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Yeah.... the set screw is the wrong tool for this application. Use a 5mm bolt instead.

I wasn't aware that the steel shaft was available. The bolts I used did the trick.

Mike

Viva La Airtronics!

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09-08-2003 04:15 AM  14 years agoPost 6
sincity

rrVeteran

Pasco, WA

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It looks to be ali. Do they supply the rod free, or is it something else I'll have to buy?

Thanks for all the help so far!

Shawn

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09-08-2003 04:26 AM  14 years agoPost 7
Dr.Ben

rrMaster

Richmond, VA, USA

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Not sure, but it won't be much. Just a rod with a threaded hole in it.

Ben Minor

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09-08-2003 07:17 AM  14 years agoPost 8
vitek

rrKey Veteran

Corvallis, OR

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Shawn,

I've found that if I tighten that set screw after every flight [when still hot] for the first 3-5 flights. I usually don't have any problems with it coming loose again. I may be using a slightly different bracket, and it has the aluminum post.

Of course you could get a stainless shaft and a longer set screw like Ben says. That's the fool proof solution.

Travis

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09-09-2003 10:32 PM  14 years agoPost 9
sharam

rrElite Veteran

Northern California - Fly at Morgan Hill Field

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Try tightening it when it is still hot right after you land.

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HelicopterMiniature Aircraft Whiplash & Fury 55 › SB16 muffler mount problem
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