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Thread: Robotics with PIC16F877 anyone??
face BY : Dan Michaels email (remove spam text)

Tom Handley wrote:
>   Dan, thanks for the info! Ok, I'm sold. There appears to be at least one
>other version of that twin gearbox. What's the P/N of the one you bought?
>I checked TAMIYAs American site and got the numbers of several local dealers
>but I haven't had time to call them yet. I hope to find it locally so I can
>shop for shaft extensions, wheels, and a castor wheel. I want front drive
>with the castor in the rear.

Hi Tom,

I found only one Tamiya twin-motor, but if there is another stronger
one, would be good to know about. The one I bought is seen here:

http://www.sinerobotics.com/twinmotor.html --> P/N 70097
http://www.hvwtech.com/gearsets.htm --> bottom of page

Just remember, Steve is apparently using the same one I got, and said
it does have minimal power for his 1# dozer. Still I think it will do
ok for my minibot.

The shafts stick out 1.125" [28mm] on each side of the box, total
4.25" [107mm] end to end. They are hexagonal and accept a std model
airplane wheel with .125" [3mm] diam hole with a bit of slop.

>   As far as my R/C hack, after tearing apart old tape recorders I've had
>since the 70's (I'm a real pack rat ;-), I found a decent motor and the car
>can now scale the thick rugs downstairs. Again, I'm anxious to get started
>on the final platform so I've got the R/C hack on hold.

I went to Walgreens to check out their 3 tiny R/C cars for $12,
unfortunately all the cars are 27 Mhz. Still want to hack them to
have RF comms both ways, bot<->base, but chaos with only 1 freq.
I'll go to ToysRus today and see what cheapo R/C goodies are there.

best regards,
- Dan Michaels
Oricom Technologies

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