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Home✈️Aircraft🚁HelicopterAlignT-REX 700N › Align Trex 700LE nitro gear changing
04-24-2014 06:52 PM  6 years ago
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epryor

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Grandview mo,

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Align Trex 700LE nitro gear changing
I was informed that I would need a gear ratio of 10.71:1 to get a head speed around (1400) using a OS91 engine, the stock gearing right now 8.2:1:4.54. is it possible to get that kind of gearing with a Trex 700 nitro?
Batman - Scale it up
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04-29-2014 04:13 AM  6 years ago
epryor

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Anybody know this?Batman - Scale it up
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04-29-2014 03:04 PM  6 years ago
Four Stroker

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Atlanta

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Well everyone is wondering why you want a head speed of 1400 ? You can of course get 1400 with the stock gear ratio.

Fast Lad in the UK has 700 nitro pinions up to 15 teeth in Mod 1 slant. US credit cards airmail. I think the 14 is about right for your wants. They are un-hardened steel which seems to work just fine. You will have to re-mount the engine and start shaft block.
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04-29-2014 10:57 PM  6 years ago
epryor

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I will be installing a 700 trex nitro mechanics in a 1/6th Bell 429 fuselage.Batman - Scale it up
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04-30-2014 01:55 AM  6 years ago
balsapro

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Going electric is a lot more beneficial for scale...Build the Best, Fly the Best, Crash the Best
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04-30-2014 02:22 AM  6 years ago
epryor

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Maybe, but I like the flight times I get from nitro and gas.Batman - Scale it up
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04-30-2014 02:52 PM  6 years ago
Four Stroker

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Atlanta

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There are at least 3 main gears for the 700 - Mod 0.7, Mod 1 Straight, Mod 1 Slant. Email Fast Lad and tell them what gear ratio you want. Their search engine is crap. I looked for hours to find the Mod 1 15T Slant. I can't find it again.

I think there is a 14T Mod 1 Align Slant gear as well that people were using with the OS 105 ?
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04-30-2014 02:59 PM  6 years ago
Four Stroker

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Ignore my previous posts. I was going in the wrong direction.
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04-30-2014 03:10 PM  6 years ago
Four Stroker

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Atlanta

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Your best bet is to retrofit something like this:

http://www.ronlund.com/rcheli-prod/414222.html

to your 700 using the Mod 1 straight gear.
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