Thanks guys, The scale is 1/10 but the tracks are 1/8 so hull is a bit tighter than it should be. Its looking like it will be close to scale weight, tracks are to scale weight and its no joy to carry. Starting to think of making a wheeled dooverlaki to move it around with.
The housings the rods go through are recycled battery powered drills. Usually where the torsion rod comes out is where you would have a thread which you screw the chuck onto. On the other side is where the planetary gears attach but have now been joined with the road arms instead. The holes the threaded ends are poking through are tapped holes where originally the balls would sit for the clutch, a bit of dremmeling was needed internally so I could flip the bushes so it also protrudes through the steel wall for strength. I just remove the gears and cut off the excess plastic, it also gives me a wide bushing with 2 outer diameters and a 12mmshaft for the arm to attach to which already has a pilot hole to drill for the rod on one side and a 19mm shoulder on the other. Really good solution for thin walls but might be hard to find a dozen old drills, I have a good flea market nearby so 3 trips for me did it at 3 - 4 dollars each. Torsion bars are made from spring steel, started with 4.5mm diameter but stuffed up a few before I found out that was a custom size so half the springs are 5mm and the other 4.5. George Mastoras On 24/2/09 5:39 AM, "Cold comfort" <[email protected]> wrote: > > Great work! What are your torsion bars made of? > Greg > > On Feb 23, 1:45 am, George Mastoras <[email protected]> wrote: >> Some progress at last. >> Still a bit to do, some welding, drilling, tapping about a days worth before >> can attach a battery to test. >> Should say this was a PITA and would not do it again, while putting this >> thing together was always thinking what if this chain broke etc so had to >> build in servicing and repair considerations. >> >> The gear ratio is 12:1 and the motors are about 320 watts at 12 volts but >> will run it at 24volts also. >> When moving this vehicle uses 56 ball bearings and 12 bushes for the arms so >> it should be efficient. >> >> Will be able to adjust tension on all the chains and be able to disassemble >> the transmission hopefully fairly easy. >> >> When welding is finished will pull apart and paint, set the bearings and >> take some photos when its in pieces. >> >> Even though its been a bit of a pain am looking forward to seeing this move, >> hopefully should be driving within 2 weeks or earlier, apart from >> transmission only have 4 road wheels left to do. >> >> George Mastoras >> >> 3stage_1.jpg >> 89KViewDownload >> >> 3stage_2.jpg >> 88KViewDownload >> >> 3stage_3.jpg >> 100KViewDownload >> >> 3stage_4.jpg >> 80KViewDownload >> >> 3stage_5.jpg >> 73KViewDownload > > > --~--~---------~--~----~------------~-------~--~----~ You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat -~----------~----~----~----~------~----~------~--~---
