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Item found in the following categories;
> Helicopters & Parts > Electric Helicopter > HK Helicopter > HK450 Parts

PRODUCT ID: F016
RATED:
Part # F016
Part # F016


Part # F016
17g 100+ $3.82
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 Customer rated 3 crowns   
View all comments | (14 threads) Ask a question
nowinkk (405 points) 10/9/2009
When is the new stock coming? I need to buy one for replacement.
Crashtruk (114 points) 10/6/2009
**WARNING** The larger bottom gear is fine now but my top gear just started slipping. The top gear is two pieces (inner and outer) the inner part is fine but the outer (teethed) part is slipping on the inner part. **-WARNING**-
Crashtruk (114 points) 10/1/2009
This issue has been adressed. The gear will no longer slip on the pinion. The pinion is now splined and the gear will not slip. Good work HK. They listen to these comments.
birdman (0 points) 9/3/2009
I just assembled the HK450 (but no motor yet) and checked for this problem by trying to rotate the tail while holding the main rotor. Applied enough pressure for the teeth on the gear to skip, but no slippage. Perhaps this part has been fixed?
Brad (0 points) 7/5/2009
Just go buy the align part for $9 not worth trying to glue it, my heli went down twice due to this fault. This is the only weak part of the kit but unfortunately can bring your bird down instantly.
Carlos (8 points) 7/5/2009
Carlos
To solve the tail drive gear slip problem I did the following.

I drilled a 1mm hole in the base of the gear across the gear and shaft. After that I put a small pin, made of a small nail, in this hole fixing it with Loctite 601. Doing that is almost impossible that the gear will slip again. See a tutorial and some photos about this process at the following addresses:

Tutorial ***********e-voo****/forum/viewtopic.php?t=65034

Photos *******community.webshots****/al***/573185023HgrkFg?vhost=community
Burnaby (218 points) 5/10/2009
Like many other bottom gear slipped just landing in grass. Luckily wasn't in flight as heli would have crash for sure.
Fixed it by drilling 1/16" hole through gear and 1/4 way into shaft* screwed in one of the extra screws* then cut off with dremel. Solid as rock at no cost.



po_au (250 points) 4/15/2009
 This is what happened, towards to end of 2 min video. Lucky I was hovering low.












po_au (250 points) 4/15/2009
Ooops, sorry wrong code. Let me try again.
Its the following video.

  This is what happened, towards to end of 2 min video. Lucky I was hovering low.









http://www.youtube.com/watch?v=UeyOu5GOAsE
po_au (250 points) 4/15/2009
This is what happened, towards to end of 2 min video. Lucky I was hovering low.

  This is what happened, towards to end of 2 min video. Lucky I was hovering low


Steve (3 points)
After putting the whole hk-450 together I almost crashed because the lower gear spins on the shaft, major pain to fix, beware of this problem or it could s**** your bird
nowinkk (405 points)
The problem of the bottom drive gear getting loose is real and must be addressed during setup, otherwise you will regret it when you lose control of the heli anytime soon. Mine was fixed by filing the shaft a little on both sides and apply some epoxy before pushing the gear home.
miguel angel (232 points)
le falta las estrias al eje,por eso el piñon gira,esperemos que lo solucion los de hc...
MIGUEL ANGEL (23 points)
pieza defectuosa, que deja sin control la cola y el heli,se estrella
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