Clark, I'm using the stock 42 pitch 9 tooth sprocket that come on the motor mated to a 41 pitch 9 tooth sprocket on the drive so no reduction (41 pitch drive chain). The 350W motors in the Sturmtiger produce enough torque to power it up a 30 degree incline so the I didn't reduce the gearing on the 450W motors in the KV-2 even though it's heavier. I figured there was enough power there. There isn't another hole in the front side of the mounts because I was going to mount each of the Victor 883 speed controllers and fuses to the front of the motor mount. That means the motor boxes will be self contained with the motor, speed controller, and fuse as one removable module. To give the fans somewhere to exit the hot air, I was going to cut a hole in the plate above the motor boxes. I have yet to cut the holes because I wanted to mount all the R/C gear and wiring on that plate. If you look at the KV back deck there are two large round armored air cleaners. I plan on mounting two exit fans in those locations on the motor cover. The fans will be mounted to the motor cover somewhat raised to meet the bottom of the back deck so I can hinge the back deck with no worries of wires getting in the way. The motor box tensioners are located at the rear of the motors and push them forward to tension the drive chains. As it stands now, all I have to do is disconnect the drive chains and the motor boxes slide out toward the front of the tank and they can be removed. There is enough space between the drivetrain and the turret rotate to pull them out. I think I have decided to mount both batteries in the compartment forward of the turret. I'm at the point where I also need track and after taking one of the Sturmtiger tracks off for a test fit, I don't even have enough track for it if I steal those tracks. They are about 18" longer than the Sturmtiger tracks. I'm working on getting more track though. BTW, the outdrives are 5/8" shafts running through go-kart bearing assemblies. The bearing assemblies are about 3" long and mounted through the hull. There is a 5/8" bearing on each end of the assembly and the length provides enough support for the drive shaft.
Derek T065 On Mon, Dec 28, 2009 at 6:49 AM, Clark Ward Jr <ki4...@gmail.com> wrote: > Heh. In the first pic, my pre-first-coffee-of-the-day thought was: > 'Hmm. He's managed to drive the tracks with a sheet of grey plastic. > Dang, I wish I could do that.' After a few sips of coffee, and > looking at the rest of the pics, even more impressed. I like the > motor mounts and the cooling fans. Is there an exhaust hole on the > other side of the mountings? Also, how much reduction are you using? > > The whole thing looks brilliant. I'm in your fan club, Derek! > > -- > Clark in Georgia > > -- > You are currently subscribed to the "R/C Tank Combat" group. > To post a message, send email to rctankcombat@googlegroups.com > To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com > Visit the group at http://groups.google.com/group/rctankcombat -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat
