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T-REX 600 › Pinion Choice...what is MOD?
04-26-2010 06:41 PM  8 years agoPost 1
T3chDad

rrNovice

Huntsville, AL, USA

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I'm looking at upgrading my 600 to the Scorpion 4025-1100. I'm going to try a 15T pinion. I see two different pinions that are the correct number of teeth and shaft size. One pinion is .6M and one is .7M.

What does the .6mod/.7mod mean?

Thanks,
Bob

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04-26-2010 06:46 PM  8 years agoPost 2
JuanRodriguez

rrProfessor

The Villages, Florida

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From a Google search....
"Modulus" is the metric systems way of expressing gear tooth pitch or size. In English or SAE gears teeth are counted per inch.

Been there, done that and old enough to know better.....

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04-26-2010 06:52 PM  8 years agoPost 3
T3chDad

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Huntsville, AL, USA

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Thanks...I had not had any luck searching...I didn't know the entire word it was referring to.

Now, why would I go with one over the other?

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04-26-2010 07:04 PM  8 years agoPost 4
Heli 770

rrProfessor

USA.

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The mod .6 pinion gear will only work with the 188T bevel main gear and the pinion gear is also beveled.

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04-26-2010 07:10 PM  8 years agoPost 5
T3chDad

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Huntsville, AL, USA

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Thank you very much. .7M it is!

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04-26-2010 09:05 PM  8 years agoPost 6
Ben-T-Spindle

rrProfessor

Central Illinois

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Mod 0.7 is what you want.

http://www.fxaeromodels.com/product...roducts_id=5139

I don’t think that Align makes a 15t pinion for a 5mm shaft.

... BTS

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04-26-2010 09:07 PM  8 years agoPost 7
Ben-T-Spindle

rrProfessor

Central Illinois

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Hear is one at a much better price.
http://www.helidirect.com/r5508152-...2pcs-p-9746.hdx

... BTS

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04-26-2010 11:36 PM  8 years agoPost 8
T3chDad

rrNovice

Huntsville, AL, USA

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I'm using the Align 15T since I got the 4025-1100 with the 6mm shaft.

Thanks for everyone's input!
Bob

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