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TT GEAR/MESH on the HK500CMT-TT |
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boum999 
Platinum (CA) USERID: 452252 Newbie 
Joined: 02/Apr/2010 Online Status: Offline Posts: 18 |
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 Topic: TT GEAR/MESH on the HK500CMT-TTPosted: 22/Mar/2011 at 3:13am |
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Hi, Can someone tell me if the problem with the TT gear mesh have been fix in the new batch. First batch was not meshing properly, and stripping the TT tube gears. And ... if not, is there a way to fix it(DIY mod). Thanks |
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superdave01
Platinum (US) USERID: 22644 Newbie
Joined: 07/Jun/2010 Online Status: Offline Posts: 8 |
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Posted: 26/Mar/2011 at 1:41pm |
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I have 2 of the 500's.
On both the probelm was still there till i also replaced the front tail case with align .
I had tried twice to just replaces the auto and front tt gear with align, both times that didnt fix it, adding a align front case cured the problem so far. Edited by superdave01 - 26/Mar/2011 at 1:41pm |
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boum999
Platinum (CA) USERID: 452252 Newbie
Joined: 02/Apr/2010 Online Status: Offline Posts: 18 |
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Posted: 26/Mar/2011 at 3:34pm |
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Is it the part that you talk? ....and when did you purchase your 500 heli? ....more than 3 month? ...i've just order mine ...just hope they have fix it. Thanks |
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superdave01
Platinum (US) USERID: 22644 Newbie
Joined: 07/Jun/2010 Online Status: Offline Posts: 8 |
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Posted: 27/Mar/2011 at 12:38am |
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Yes thats the part , the align and HK gears measured the same to me but i replaced that part with the align one and also the align gears.
Please post here if your 500 dont have the problem, I bought one of mine about 4 months ago and the second one about 3 months ago.
Please post your experience, Hope ive helped.
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boum999
Platinum (CA) USERID: 452252 Newbie
Joined: 02/Apr/2010 Online Status: Offline Posts: 18 |
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Posted: 06/Apr/2011 at 5:37am |
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Okey ....little update on my HK500CMT-TT Unfortunately ....the TT gear/Mesh ...as expected ...was ...not good
And ...got a problem with the Torque Tube Front Drive Gear too
But ...overall ...i'm happy with the HK500CMT-TT I've just order a new Torque Tube Front Drive Gear set, and i will probably just do the DIY mod on the main frame, which involve to slowly extend those holes where the Tail Boom Case is attach to the mainframe. , to give enough play for a nice ...meshing THanks Edited by boum999 - 06/Apr/2011 at 6:13am |
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Ivan_B
Platinum (AU) USERID: 711700 HobbyKing Constituent 
Joined: 09/Mar/2011 Online Status: Offline Posts: 127 |
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Posted: 24/Apr/2011 at 1:39pm |
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Its IS the main frame.
I have the same problem! I replaced ALL but the tail unit of my TT with Align parts thinking this will resolve the issue, however the mesh was STILL no good wtf!!!. It turns out that the TT is not at fault for the bad gear mesh (Doesn't make up for the bad quality TT and lumpy gears) I can confirm the fault is with the MAIN FRAME mounting and guide holes for the tail case. Drill or dremel the holes 1-2mm towards the auto gear (the front of the heli) so the TT can slide forward for a PERFECT MESH!!!!! Edited by Ivan_B - 24/Apr/2011 at 1:50pm |
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superdave01
Platinum (US) USERID: 22644 Newbie
Joined: 07/Jun/2010 Online Status: Offline Posts: 8 |
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Posted: 24/Apr/2011 at 4:28pm |
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Not so, I thought same thing early on....
I took side frames from a friend ALign 500 and matched them up with the HK side frames.
Exact in every way match, the frames arent the problem at least with the 2 hk 500's i have.
A align tail case and gears fixed both ... still no problems.
Now with that said drilling the side frames could eliminate the problem but its not the original problem.
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Ivan_B
Platinum (AU) USERID: 711700 HobbyKing Constituent
Joined: 09/Mar/2011 Online Status: Offline Posts: 127 |
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Posted: 30/Apr/2011 at 11:02am |
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Here's my video on the Torque tube issue, and you'll find the Align parts did not solve a thing for me.
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hairykarts
Platinum (NZ) USERID: 424820 Hobbyking Addict 
Joined: 24/May/2010 Location: auk nz Online Status: Offline Posts: 455 |
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Posted: 01/May/2011 at 8:08am |
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The same issue arises on the belt drive, it seems that although a cure is to elongate the frame holes , the actual problem is that the bearing holding the shaft drive gears is set about 1mm too far aft.
Boum999 it seems that your gear is badly manufactured
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I must remember .... when inverted .... down is up and up is down .
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spilVentinjsh
Platinum (LV) USERID: 746436 Bargain Addict! 
Joined: 01/Apr/2011 Online Status: Offline Posts: 30 |
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Posted: 01/May/2011 at 2:13pm |
Looks like, I got happy ticket in this particularly place on the 500cmt belt
 Gear mesh is ok (with align gears of course). With original gears, it was disaster. But I just have some suspecting that gears, that come with HK is a little bit smaller than original. I will receive tomorrow my precise digital calipers and measure it out:) |
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...receive from the 23/3/2011 batch
..about 1 mm off
...skipping gear
