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HelicopterAlignT-REX 600N › 700 main gear on a 600
01-28-2012 08:29 PM  6 years agoPost 1
coptercptn

rrElite Veteran

Mesa AZ. USA

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Has anyone tried to use a 700 main gear/hub on a 600?
here's what I'm trying to do... I have a 700mx (510kv) motor I want to use in a 600 frame.. the problem is finding a helical gear combination that will work. I bought a helical gear for the motor but when I got it, I find that the gear tooth spacing is way different.. and there simply isn't enough meat on the 600 drive gear to ream it out to fit the 700 motor..

So my thoughts were to try and fit the 700 main gear and hub onto the 600 main shaft...

Any thoughts? or is there an easier way?

Home of the "Sea Cobra".....

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01-28-2012 09:57 PM  6 years agoPost 2
Ravenhyper50

rrKey Veteran

Canada's Capital

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700 main shaft 12mm
600 main shaft 10mm

Fitting gear and hub will not work.

Question though.... will the 700 gear bolt onto the 600 hub?

If so, that might be your solution.

Cheer,
Raven

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01-28-2012 10:48 PM  6 years agoPost 3
Four Stroker

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Atlanta

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Well my first thoughts are that this is the nitro section.

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01-28-2012 11:33 PM  6 years agoPost 4
coptercptn

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Mesa AZ. USA

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welll excuuuuuuuuuse me.. thought it was trex and main shafts are main shafts???

Home of the "Sea Cobra".....

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01-29-2012 07:48 AM  6 years agoPost 5
ChrisK7

rrApprentice

Stanfield, Ore. 97875

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Or maybe just machine or find a spacer to make up the 2mm difference between the two mainshaft sizes.

I'm thinking maybe some K&S brass or alum. tubing?

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01-29-2012 08:58 AM  6 years agoPost 6
UK Helinut

rrApprentice

Gloucestershire

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Take a lookat the KDE website, I believe that they make a hub that fits the 600 shaft for 700 gears.

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01-29-2012 12:54 PM  6 years agoPost 7
fastflyer20

rrKey Veteran

N. Tonawanda, NY

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Yes, the KDE hub allows a 600 to use a 700 main gear.
Their OWB is also the best I have found for the 600's.

http://www.kdedirect.com/TREX550600MGC.html

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01-29-2012 02:45 PM  6 years agoPost 8
coptercptn

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Mesa AZ. USA

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thanks for the help guys, that's exactly what I need!!!

Home of the "Sea Cobra".....

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HelicopterAlignT-REX 600N › 700 main gear on a 600
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