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HomeAircraftHelicopterGaui NX4 NX7Other › Securing Fan Mount
09-01-2013 11:31 PM  5 years agoPost 1
rudyy

rrElite Veteran

E. Amherst, NY

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My fan mount keeps slipping from the engine shaft. It looks like the two M2.5 screws are not sufficient to grab a hold of it. Do you guys apply green loctite between the fan mount and the shaft?

Rudy

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09-01-2013 11:42 PM  5 years agoPost 2
rj98

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auckland nz

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fan mount
You should locktight the nut on the engine shaft making sure its tight.use plastic tooth brush threw carb to lock crank if you dont have proper tool .also make sure washer is between mount and engine before assembling . Once you have tightened nut , then pinch up bolts on fan mount making sure to do it evenly.

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09-02-2013 12:21 AM  5 years agoPost 3
rudyy

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E. Amherst, NY

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I did loctite the engine nut. The engine fan mount just spins freely between the nut and the engine front bearing.

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09-02-2013 12:46 AM  5 years agoPost 4
RPM 1.5

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Cape May New Jersey

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Sometimes I used a Star Washer on fan some my heli's seem to work out fine
Ray

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09-02-2013 03:06 AM  5 years agoPost 5
rj98

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auckland nz

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fan hub
Did you remember to put washer between fan hub and engine (see page 6 off manual)
Rather than under shaft nut ?
Failing that try an additional washer under nut and tighten with socket holding conrod
From moving with tool or tooth brush threw carb make sure to use plenty off force.
When done you shouldnt be able to move fan by hand with system locked.
Then tighten pinch bolts

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09-02-2013 04:51 AM  5 years agoPost 6
honda411

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Surprise, AZ USA

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Gaui kits are known to have too short of screws. My X7 I had to get all new longer screws for the entire frame. Screwing in 2mm or less is not sufficient holding power.

HeliDirect Field Rep, Synergy N7 w/ OS 105, Torq Servos, Cyclone/ Rail blades

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09-02-2013 05:44 AM  5 years agoPost 7
dkshema

rrMaster

Cedar Rapids, IA

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Screws in the NX4 are proper length. Of course this really has nothing to do with the OP's topic.

If you use the washer from the motor under the fan as shown, lock down the nut on the crankshaft properly using an appropriate crankshaft lock tool, then tighten the two clamp bolts, the fan will stay put.

This setup is no different than that used on Align helis, and works quite well. If you are repeatedly popping the nut loose, consider that you may be trying to start a flooded, hydraulic-locked motor.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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10-13-2013 05:45 AM  5 years agoPost 8
Paul Woodcock

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Dubai - United Arab Emirates

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Hi

I watched a guy do just that.....

Big starter on a small motor that is flooded. Lucky the fan slipped and didn't break the motor.

Regards
Paul

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