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Metal vs. Nylon Gear

Old 03-13-2005, 04:12 PM
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Harleyflyer
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Default Metal vs. Nylon Gear

Does it matter if a throttle servo has metal or nylon gear? Are there any pros or cons or does it not really matter?

Thanks in advance.
Old 03-13-2005, 04:50 PM
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GrnBrt
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Default RE: Metal vs. Nylon Gear

The throttle servo is the least used servo as far as stress is concerned so a nylon geared servo would work just fine. If I have one available I'll even use a mini servo to save on weight.
Old 03-13-2005, 04:59 PM
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Rodney
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Default RE: Metal vs. Nylon Gear

In general, nylon gears wear better than metal gears and are audibly less noisy. Metal gears are usually stronger than nylon but wear out much faster.
Old 03-13-2005, 05:05 PM
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Scar
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Default RE: Metal vs. Nylon Gear


ORIGINAL: Harleyflyer

Does it matter if a throttle servo has metal or nylon gear? Are there any pros or cons or does it not really matter?

Thanks in advance.
I've never used a metal gear servo, and I have aerobatic planes up to 76" WS, warbirds up to 108".

One of the old timers bought his first metal gear servos for his Dave Patrick Ultimate last summer, and the first thing that happened was the servo arm screws loosened up and dropped out. You have to use loctite threadlocking compound on the metal gear version, because the metal threads don't keep the screw from backing out like plastic threads do.

Not sure when I'll be buying metal gear servos.
Good luck
Dave Olson
Old 03-13-2005, 05:11 PM
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exeter_acres
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Default RE: Metal vs. Nylon Gear

I have a friend with a 40% Carden Aircraft Edge 540 (Wow..it is beautiful!) and he refuses to use metal gears whenever he has the choice between the two....

I really don't have an opinion about this, but I thought I would pass along what he said...... and I trust his opinion
Old 03-13-2005, 05:44 PM
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Geistware
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Default RE: Metal vs. Nylon Gear

To answer your question,
No, it does not matter.
You need a throttle servo that has high resolution if you are doing any flying that needs precision throttle control.

ORIGINAL: Harleyflyer

Does it matter if a throttle servo has metal or nylon gear? Are there any pros or cons or does it not really matter?

Thanks in advance.
Old 03-13-2005, 09:25 PM
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LuckyArmpit
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Default RE: Metal vs. Nylon Gear

Hitec makes some of their servos with whats called "carbonite" gear train. Strength of metal but longetivity of plastic.
As far as throttle servos go, there is a guy at the club who flies a profile yak with standard servos all around except for his
throttle servo which is a Hitec HS-55.

Dave...
Old 03-13-2005, 09:29 PM
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exeter_acres
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Default RE: Metal vs. Nylon Gear

I've used HS-81's on a few .46 and .60 size planes for servos

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