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Aug 21, 2019, 12:39 PM
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coriolan's Avatar
Quote:
Originally Posted by Hal C
By any chance, has anybody got a source for the 1mm plastic pinion gears? I found that mine had a split when installing it on the motor for my FZ UM Neuport (same one as the Albatros).

Hal C
For module .30 (other available too):
https://www.homefly.com/products.asp?id=37
Also:
https://micronwings.com/Products/Sec...ts/index.shtml
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Aug 21, 2019, 02:48 PM
Registered User
speedy01's Avatar
Quote:
Originally Posted by coriolan
For module .30 ... .
So, Google says
Quote:
""Module" is the unit of size that indicates how big or small a gear is. It is the ratio of the reference diameter of the gear divided by the number of teeth. ... (2)A pair of gears can only mesh correctly if and when the base pitch is the same.
So what does all that mean as regards this particular pinion? Appears "mod 30 " is what is required. Is this also the mod for Parkzone UM motors?

Gene K
Aug 21, 2019, 04:06 PM
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coriolan's Avatar
For these smaller size pinion the O.D. and tooth number might help you determine the suitability, many such pinions (Kenway,GWS,Didel) are module .30! The small gears used in model reduction are not as precise as watchmaker gears being mostly just molded so nothing is critical!
https://en.wikipedia.org/wiki/Gear#S..._module_system
Last edited by coriolan; Aug 21, 2019 at 04:15 PM.
Aug 21, 2019, 04:55 PM
Registered User
speedy01's Avatar
Quote:
Originally Posted by coriolan
For these smaller size pinion ... .
Thanks.

Gene K
Aug 22, 2019, 09:45 AM
Somewhere in Tennessee
Quote:
Originally Posted by coriolan
I seem to have a problem now since I can't find the bad pinion gear for the Neuport. I set the bad pinion aside to find a replacement, but it somehow got thrown away. I see where the module should be .3 mm and I have a 1mm motor shaft, but now I don't have a way to find the number of teeth to buy. Since they come in packages of 5, it could get costly to stab at what to buy (from Australia).

Can anyone help with the number of teeth needed?

Does anyone have a source in the USA for these? My best guess is 8, 9, or 10 teeth. Shipping could be cost prohibited out of country.
Last edited by Hal C; Aug 22, 2019 at 10:42 AM.
Aug 22, 2019, 12:46 PM
Registered User
Wondering if a defunct servo might yield a usable brass pinion
Aug 22, 2019, 07:51 PM
Registered User
AntiArf's Avatar
Quote:
Originally Posted by Bare
Wondering if a defunct servo might yield a usable brass pinion
You read my mind. Was just going to post that if one was at a hobby shop like the ones that used to carry a full row of servo replacement gears, they would probably find something that works. Would be good info if a good substitute was found. Tooth count, shaft OD, and reasonably close gear OD measured with a micrometer could be useful info to post. Maybe someone has something? If the "LHS" was closer I could look for you, but not there often. They're one of the few that has an owner who has habitually overstocked replacement parts, including FlyZone. Found a few FlyZone hardware parts over time, including some plastic control horns used in my last build.
Aug 23, 2019, 02:21 PM
Somewhere in Tennessee
Quote:
Originally Posted by AntiArf
You read my mind. Was just going to post that if one was at a hobby shop like the ones that used to carry a full row of servo replacement gears, they would probably find something that works. Would be good info if a good substitute was found. Tooth count, shaft OD, and reasonably close gear OD measured with a micrometer could be useful info to post. Maybe someone has something? If the "LHS" was closer I could look for you, but not there often. They're one of the few that has an owner who has habitually overstocked replacement parts, including FlyZone. Found a few FlyZone hardware parts over time, including some plastic control horns used in my last build.
Hey Guys!

I got lucky and found a Flyzone FLZA6102 brushed motor (7mm 12000kV). It came with the pinion so I have the dimensions( best that I can gather using my digital caliper)

The shaft is 1mm diameter.... the gear has 9 teeth.... The diameter of the gear is 2.55mm.... The length is 3.55mm.... plus add .025mm for the rear flange.

If anyone has luck finding replacement gears (preferably brass) the please post back.

Thanks.... Hal C
Aug 23, 2019, 09:09 PM
Registered User
AntiArf's Avatar
Quote:
Originally Posted by Hal C
Hey Guys!

I got lucky and found a Flyzone FLZA6102 brushed motor (7mm 12000kV). It came with the pinion so I have the dimensions( best that I can gather using my digital caliper)

The shaft is 1mm diameter.... the gear has 9 teeth.... The diameter of the gear is 2.55mm.... The length is 3.55mm.... plus add .025mm for the rear flange.

If anyone has luck finding replacement gears (preferably brass) the please post back.

Thanks.... Hal C
If someone had a stash of sub micro servo gears, it would probably turn up. Going through my stash of only 2 gear sets, 1 I know is from a 2.5 gm servo, I found ones that were close. One was 10 tooth, 2.5mm dia, but slightly over drilled to spin free on a 1mm shaft. Could maybe be CA glued on a 1mm shaft though. I've found when they're that close, applying a drop of thin CA to the bore of the shaft hole in the plastic gear with a pin can tighten up the clearance, and then the gear can be pressed on. Another was not over drilled, had 8 teeth, and was 2mm diameter. These servo gears may not have the full gear tooth length of 3.55mm, but would probably hold up if they have a good fit.

Looked at Aliexpress. You can spend forever looking at gears and playing with search terms browsing through the small gears, but they may very well have it.
For example: https://www.aliexpress.com/wholesale...itch_new_app=y
Some I found that seem close: https://www.aliexpress.com/item/3291...chweb201603_53
https://www.aliexpress.com/item/3302...chweb201603_53
https://www.aliexpress.com/item/3248...chweb201603_53
Last edited by AntiArf; Aug 23, 2019 at 11:49 PM.
Aug 24, 2019, 04:59 PM
Registered User
Quote:
Originally Posted by Bare
Nix on the plastic pinions.
Flyzone upgraded to Brass ones later on .. For reason.
Where do you get the brass ones?
Aug 24, 2019, 10:07 PM
Registered User
AntiArf's Avatar
Quote:
Originally Posted by howleyj
Where do you get the brass ones?
That type of part would almost certainly only come with a replacement motor, like this. Google search flyzone replacement 7mm motor. https://www.mashobbies.com.au/radio-...pe-a-flza6102/

If someone were to spend enough time looking through places like Aliexpress such as the link I posted in my last post, they could probably find a source and buy a bag of them for $10 or less.


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