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HomeAircraftHelicopterMain Discussion › mikado pinion and align motor question?
11-15-2014 03:35 AM  3 years agoPost 1
tyfast27

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Dubois, Wyoming

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Will the mod .5 herringbone 20t pinion (part # 4120) fit the align mx600 1220kv motor? I'm trying to put together a logo 5003d and need a little Assistance

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11-15-2014 04:03 AM  3 years agoPost 2
pctomlin

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Texas

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I don't believe the 600MX will work with that pinion. Doing a little backtracking the pinion should be 5mm and the 600MX has a 6mm motor shaft.

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11-15-2014 04:07 AM  3 years agoPost 3
tyfast27

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That's what I'm thinking as well.... Any advice on what motor to go with?

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11-15-2014 04:32 AM  3 years agoPost 4
pctomlin

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There is always the good ole Scorpion 4020 or 4025 series motors or the equivalents by KDE, Quantum or the new XNova. Hyperion makes a 4020/4025-1100 also. Just need to make sure you are getting the proper motor shaft size.

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11-15-2014 04:39 AM  3 years agoPost 5
EEngineer

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Are you planning on using a counterbearing assy. with your setup?

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11-15-2014 01:33 PM  3 years agoPost 6
tyfast27

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Wasn't planning on it but that's probably a good idea huh?

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11-15-2014 02:10 PM  3 years agoPost 7
Riq

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ND

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Probably going with a mod 7 or even a mod 1 gear and pinion would be a good idea. Even if you went to a different motor, it would probably be an upgrade in power and youd need the mod 7 anyhow.
Im fairly certain my 4025-1100 has a 6mm mod7 pinion, and was pretty sure they were available....not so sure now.
Looking at mikados website, they have a 15t mod7(4215) that would put your gearing close to where your wanting it, (10.2 vs 10.5). The next jump is to a 19tooth. They dont say what bore these are though, and im having a time trying to find it.

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11-15-2014 06:31 PM  3 years agoPost 8
pctomlin

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Texas

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Not an exact science but I have been finding what Mikado model heli the pinion is recommended for and then looking up the motor recommendations on Mikados web site. From there it is finding the motor shaft size. It would be so much simpler if Mikado would list the shaft size in their pinion specs and/or make 5mm and 6mm pinions in the same style and tooth count.

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11-16-2014 02:35 AM  3 years agoPost 9
Riq

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Bump to the mikado forum, or someone please chime in to the 5-6mm mikado pinion debate.

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11-16-2014 02:42 AM  3 years agoPost 10
EEngineer

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TX

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Wasn't planning on it but that's probably a good idea huh?
Helical and double helical(herringbone) pinions have additional sideloading of the pinion/main gear than that of a spur gear.

Can't seem to find the link that has the math formulas for various types of pinions.

If I find it, I'll post it.

FWIW

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11-16-2014 02:46 AM  3 years agoPost 11
tyfast27

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Dubois, Wyoming

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Okay thank you. I would of thought that it would be just the opposite.... Lol do you know where I would get that second bearing block? I looked on the Heli and I don't see where it would mount, do you half to do some modifications?

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11-16-2014 02:46 AM  3 years agoPost 12
Riq

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ND

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mr mels ecalc

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11-16-2014 02:55 AM  3 years agoPost 13
EEngineer

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TX

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11-16-2014 03:17 AM  3 years agoPost 14
Riq

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ND

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LOL, too much....
Here is a layman's derivative
http://heli.dacsa.net/calcv3/

...and sam2b has a great method of keeping a motor in its torque curve. http://sam2brc.wordpress.com/2011/0...ulator-formula/

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11-16-2014 04:27 AM  3 years agoPost 15
EEngineer

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TX

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LOL, too much....
Here is a layman's derivative
http://heli.dacsa.net/calcv3/
That a head speed calculator....

Has nothing to do the with loads imposed on a pinion/main gear mesh.

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11-16-2014 04:33 AM  3 years agoPost 16
tyfast27

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Dubois, Wyoming

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Sweet!!!!!! Thanks Riq and engineer, very useful info.

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11-16-2014 04:35 AM  3 years agoPost 17
Riq

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ND

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LOL, Im not sure if I lost what he, the op , was asking in translation, or If im just lost.
Did he ask for engineering jargon on gears, didnt think I read that. Maybe im just old. I thought I was getting to the meat of it.

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11-16-2014 04:40 AM  3 years agoPost 18
EEngineer

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TX

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The OP was trying to mate a herringbone(double helix) pinion to an Align motor....

One issue is the pinion/motor shaft size....and the pinion's "modulus".

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11-16-2014 04:44 AM  3 years agoPost 19
EEngineer

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TX

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The issue that I mentioned was that helix pinion's have additonal sideloads that spur pinions don't, and in the case of a single helix...additional axial loads as well.

Since Mikado was mentioned, on the 600SX, their is a counterbearing assembly to support the pinion against the main gear.

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11-16-2014 04:47 AM  3 years agoPost 20
EEngineer

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TX

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So, I posted a link to the mechanical engineering of pinion "physics".

From that, one can see how the forces are calculated....and by how much, relatively, from pinion type to type.

FWIW

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