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Hitec RCD ProModeler
Band1086

Elite Veteran

Kennewick, Wa. USA

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Anyone know if the 7HV main gear will hold up with an 11T pinion or if the motor mount will adjust that far?

ProgressiveRC, Tammies Hobbies

01-26-2017 04:29 AM
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Band1086

Elite Veteran

Kennewick, Wa. USA

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Can someone tell me the thickness of the main gear? Is it 11mm like the Trex?

Thanks

ProgressiveRC, Tammies Hobbies

01-27-2017 03:42 PM
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DemetriusUSN

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Virginia Beach, Va USA

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When I get home I will, I'm off work at 230pm.

Minicopter Diabolo 700, Goblin Speed 700, Goblin 700 triblade, Compass 6hvu, Goblin 570 triblade

01-27-2017 04:03 PM
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DemetriusUSN

Veteran

Virginia Beach, Va USA

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The 7hv spiral main gear read 11.56mm thick or 1/2 an inch and the tree mod 1.0 matches perfect to the gear.

Minicopter Diabolo 700, Goblin Speed 700, Goblin 700 triblade, Compass 6hvu, Goblin 570 triblade

01-28-2017 08:52 PM
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Band1086

Elite Veteran

Kennewick, Wa. USA

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Thank you! Very good info.

Thanks again.

ProgressiveRC, Tammies Hobbies

01-29-2017 12:50 AM
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DemetriusUSN

Veteran

Virginia Beach, Va USA

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You're welcome, my caliper is from Harbour freight so it's not the greatest but it does the job.

Minicopter Diabolo 700, Goblin Speed 700, Goblin 700 triblade, Compass 6hvu, Goblin 570 triblade

01-29-2017 01:16 AM
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Band1086

Elite Veteran

Kennewick, Wa. USA

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Pinion

Well, the Trex pinion doesn't work. It does mesh, but when it meshes, it does not ride perpendicular to the main gear. The helical cut main gear on the 7HV has a shallower cross cut than the Trex...

So, I need an 11T pinion to fit the 7HV main gear. Does anyone have one they'd sell or know where I can get one?

Thanks

ProgressiveRC, Tammies Hobbies

02-08-2017 11:48 PM
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DemetriusUSN

Veteran

Virginia Beach, Va USA

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The helical main gear I had fit, I'm sure it was Trex. If I'm mistaken, my fault.

Minicopter Diabolo 700, Goblin Speed 700, Goblin 700 triblade, Compass 6hvu, Goblin 570 triblade

02-09-2017 12:21 AM
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Band1086

Elite Veteran

Kennewick, Wa. USA

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Mine fit too but not straight up and down on the main gear...

ProgressiveRC, Tammies Hobbies

02-09-2017 01:49 AM
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Band1086

Elite Veteran

Kennewick, Wa. USA

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I found a compass 7HV 11T pinion at experience RC. With this the 7HV has 4 different gear ratios available: 14T-9.07 13T-9.77 12T-10.58 11T-11.545
Excellent amount of gearing options for a single stage setup! Can't wait to fly it. It will be on 16S with a 450KV NEU 1915 1.5Y. The motor will run at approx. 25,000 RPM @ 2150 HS. And since torque X RPM = power, I'm anxious to see what it can do with a smaller motor on 16S with absolute minimum head room!

ProgressiveRC, Tammies Hobbies

02-17-2017 04:08 AM
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DemetriusUSN

Veteran

Virginia Beach, Va USA

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That's great..... I can't wait to see a video of this monster in the air.

Minicopter Diabolo 700, Goblin Speed 700, Goblin 700 triblade, Compass 6hvu, Goblin 570 triblade

02-17-2017 09:56 AM
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