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From: "Chrysanthos Kanellopoulos" <xchrysk-at-otenet.gr>
Subject: quick BT-7 [TANKS]
Date: Mon, 22 Oct 2007 06:37:48 +0300
Reply-To: tanks-at-rctankcombat.com

Thanks for letting me know Paul.  As I said, this is only daydreams for a quick and crude BT-7.  THe rear wheels will be the drive wheels and will engage the guide horns T-34 style. It is possible to drive directly if you want to avoid trouble of transmission, gears and pulleys. There is space in a 1:6 model for Anvilus' motors, only there'll be only 388 RPM for a 4 inch diam. wheel. Not too fast. They fit kind of obliquely and supposedly mounted on a sloping base (yellow) that has to be rigid somehow. with red, Anvilus' motors.  That's why 1:8  scale is an option. You mount DeWalts directly and you get all 500 RPM directly from the drills' shafts.
 
No, I am not planning  to drive it without the tracks.
Pretty photo of teh front.
 
Chrys
 
 
 
Those disk shaped things on the back are housings for the final drive gears.  I was confused about how these shafts were driven until I got a good look at a drawing in"Steel Steeds Christie" a biography of J. Walter Christie written by his son J. Edward.  This drawing clearly shows the layout of the major components in the M-1931 Christie tank that was the basis for the BT series.  The drawing shows the transmission and clutches in front of the final drives and what looks to be a gear arrangement between them.  Later!

Christie_1_6print screen2.jpg