Mike,
What you need are beveled gears, such as Joe used inside of the
Hetzer.
Surplus center had them for awhile, check their site.
On Aug 9, 2:54 pm, Mike Mane <[email protected]> wrote:
> As you mighy recall, I have been planning to build the M4A3 (76mm)
> Sherman. Thankfully I found a book with a blueprint and a scaled
> ruler. The finished tank should be 1:6 scale, but much of the geometry
> will be simplified at first.
>
> The question I have deals with the motors. I hoped not to use
> expencive motors for robotics, so I happen to have two reversable
> 12vdc drills which can be opened, creating a basically cylandrical
> engine about 9 inches long. Unfortunately, both motors, when set on
> one axis facing apart, their width exceeds the tank hull's width of 10
> inches. The only other option I could think was setting both motors
> parallel inside the engine compartment and using two shafts and cogs
> to drive the front sprocket--very similar to the real Sherman's design.
>
> Does anybody know where I can look for small 90' cogs? I was hoping to
> use the drills' chuck clamps as a means to easily attach the shafts to
> the motors as well as make minor adjustments if necessary.
>
> Thanks,
>
> -Mike M.
>
> Message sent by way of mobile device
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