Modifying Standard Gear Box

This board contains easy-to-do fixes on your new tanks from stock. This will hopefully help beginners to get the accuracy they want from their models.
walter
Sergeant
Posts: 567
Joined: Fri Mar 10, 2017 11:53 am
Location: Geelong Australia

Re: Modifying Standard Gear Box

Post by walter »

The original gear axles are 3.5mm dia. I kept that size on all the gears.
To be able to use the flanged ball bearings both enda of the axles need to be turned down to 3mm dia
Attachments
IMG_20180422_135033 (Small).jpg
IMG_20180422_135033 (Small).jpg (85.54 KiB) Viewed 4680 times
walter
Sergeant
Posts: 567
Joined: Fri Mar 10, 2017 11:53 am
Location: Geelong Australia

Re: Modifying Standard Gear Box

Post by walter »

Finished
Attachments
IMG_20180425_171604 (Small).jpg
IMG_20180425_171604 (Small).jpg (91.65 KiB) Viewed 4679 times
walter
Sergeant
Posts: 567
Joined: Fri Mar 10, 2017 11:53 am
Location: Geelong Australia

Re: Modifying Standard Gear Box

Post by walter »

Another one
Attachments
IMG_20180425_171545 (Small).jpg
walter
Sergeant
Posts: 567
Joined: Fri Mar 10, 2017 11:53 am
Location: Geelong Australia

Re: Modifying Standard Gear Box

Post by walter »

One more
Attachments
IMG_20180425_171530 (Small).jpg
IMG_20180425_171530 (Small).jpg (98.21 KiB) Viewed 4677 times
User avatar
wibblywobbly
Major
Posts: 6398
Joined: Fri Oct 17, 2008 9:30 am
Location: South Wales Valley
Contact:

Re: Modifying Standard Gear Box

Post by wibblywobbly »

The difference between a mere modeller with a blunt file, and a qualified engineer with the right tools. 8O
Tiger 1 Late
Panther G
King Tiger
M36 B1
User avatar
PainlessWolf
Lieutenant-Colonel
Posts: 7399
Joined: Sun Feb 26, 2012 9:09 pm
Location: Southern Colorado Rocky Mountains

Re: Modifying Standard Gear Box

Post by PainlessWolf »

HEEEEY!
I resemble that remark. *huffs* ( Beautiful gearbox tho' )
regards,
Painless
...Here for the Dawn...
User avatar
c.rainford73
Major
Posts: 6104
Joined: Thu Aug 25, 2016 7:34 pm
Location: Connecticut USA

Re: Modifying Standard Gear Box

Post by c.rainford73 »

:thumbup: These are simply amazing you should take a bow!
Tanks alot.... :wave:
User avatar
Kostyanchik
Private
Posts: 63
Joined: Wed Dec 13, 2017 3:37 pm
Location: Russia, Moscow

Re: Modifying Standard Gear Box

Post by Kostyanchik »

Walter, excellent performance :thumbup: :clap:
How do the new gearboxes manifest themselves in the motion?
I'd love to watch the video.
using translator
walter
Sergeant
Posts: 567
Joined: Fri Mar 10, 2017 11:53 am
Location: Geelong Australia

Re: Modifying Standard Gear Box

Post by walter »

Hi Kostyanchik,
The gear boxes perform better then I expected.
I am really pleased with them.
I tried to post a video. but each time I tried the web site turned itself of.
May be some one can help how to post a video?
Walter
walter
Sergeant
Posts: 567
Joined: Fri Mar 10, 2017 11:53 am
Location: Geelong Australia

Re: Modifying Standard Gear Box

Post by walter »

Hi Mick,
I intended to use silver steel but by mistake used some ordinary steel. I found out while trying to harden the cutter. No I have not a grinding set up.I turned the cutter in the lathe then marked out 6 divisions and filed the teeth to shape.
Back to hardening the cutter.
I do not enjoy making special tools needed to produce parts. So having spend time making the gear cutter and not able to harden it,did not make me feel very happy.Then came the spark I remembered I had some case hardening powder some where. To members that are not familiar with case hardening. It is quite a simple process you heat what ever you want to case harden to a red hot coulor then quickly dip it into the powder. For a cutter with such small teeth I did that process only 3 times. The theory is the steel will absorb carbon from the powder and it is possible to achieve almost o.5mm of hardening surface.To harden you heat up again to a red hot coulor and dip it strait into cold water. The surface will be almost glass hard it does not be need to annealed. With my cutter I did cut a lot of gears in brass and steel. The down side of case hardening is you are limit in re sharpening. Because the hard surface is very thin.
Walter
Post Reply

Return to “Things to fix on your new tank”