1/4" ABS plastic.... Derek
On 2/18/09, Modena <[email protected]> wrote: > > looks great Derek, what are the track pads made from? > > On Feb 18, 4:25 pm, Derek Engelhaupt <[email protected]> wrote: > > http://www.youtube.com/watch?v=reSQv7IaBgohttp://www.youtube.com/watch?v=HZk19V_mCAA > > click on watch in high qualityhttp://www.youtube.com/watch?v=XfaZGlA3tOw > > > > There's a couple of early vids with the old tracks. The new tracks > > make a lot more noise. > > > > Derek > > > > On 2/17/09, Tango71 <[email protected]> wrote: > > > > > > > > > > > > > Nice work. Got any video footage of it moving? > > > > > On Feb 17, 7:53 pm, Derek Engelhaupt <[email protected]> wrote: > > > > Sorry for the double post, Gmail is having issues tonight. > > > > > > Derek > > > > > > On 2/17/09, Derek Engelhaupt <[email protected]> wrote: > > > > > > > All of the suspension, track, and motor mount work is done. > > > > > Preliminary testing in the garage looks good. After slamming the > > > > > controls forward and back, left and right, the motor mounts didn't > > > > > move. I was intentionally being hard on it to see if anything broke. > > > > > It was raining/snowing last weekend so I didn't get her out on the > > > > > town, but hopefully this weekend I can get some vids of it in action > > > > > again. I used some of those really cheap car seat springs ($1/piece) > > > > > so that's why there are two of them on most of the suspension arms. > > > > > One is under tension and the other isn't so it acts like a progressive > > > > > spring. I used a different type of shaft collar on the pivots since > > > > > the compression type collars I was using slipped due to lack of grip > > > > > on the 1/2" carriage bolts. The new spring arms are grade 8 1/4" > > > > > bolts. Basically they are just tightened to the point where they dig > > > > > into the 1/2" carriage bolt and have yet to slip. I experimented with > > > > > drilling holes in the 1/2" carriage bolts to accept the grade 8 1/4" > > > > > bolts, but even using a vise and my drill press the holes always ended > > > > > up in slightly the wrong place. The suspension arms have a square > > > > > hole in them to accept the carriage bolts. That way I didn't have to > > > > > weld any of the bolts in place. The motor mounts seem VERY solid now. > > > > > I had to lengthen the drive chains by one link to have more space to > > > > > bolt the "U" channel to the hull. The attachment chain track is on > > > > > the sprockets pretty loose. I had backed my tensioning system all the > > > > > way out during the re-construction and realized that once the new > > > > > tracks were on, it really isn't needed at all at this point. That > > > > > might change once I get it out in the real world, but the option to > > > > > add some tension is still there. I put just enough tension on it to > > > > > keep the rear axle from moving. The gray putty in the pic with the > > > > > track under the mud flap was a repair I had to make. Somehow I > > > > > couldn't get the old sprocket off and started knocking it off with my > > > > > rubber hammer. Long story short, my aim isn't that good. Smacked the > > > > > plywood and splintered it nicely. I used that two part putty stuff > > > > > (no not Miricle Putty), but similar. The stuff dries very hard and is > > > > > fairly simple to mold as long as you do it quickly. I finally got the > > > > > electronics up off the bottom of the hull and mounted, but I still > > > > > have to secure all of the wiring so it doesn't come loose in combat. > > > > > Overall, it looks like a successful rebuild. It may not be pretty, > > > > > but it seems to work well. Now....off to mount a marker. ;) > > > > > > >http://i154.photobucket.com/albums/s265/nitzerebbhead/Sturmtiger/IM00... > > > > >http://i154.photobucket.com/albums/s265/nitzerebbhead/Sturmtiger/IM00... > > > > >http://i154.photobucket.com/albums/s265/nitzerebbhead/Sturmtiger/IM00... > > > > >http://i154.photobucket.com/albums/s265/nitzerebbhead/Sturmtiger/IM00... > > > > >http://i154.photobucket.com/albums/s265/nitzerebbhead/Sturmtiger/IM00... > > > > >http://i154.photobucket.com/albums/s265/nitzerebbhead/Sturmtiger/IM00... > > > > >http://i154.photobucket.com/albums/s265/nitzerebbhead/Sturmtiger/IM00... > > > > >http://i154.photobucket.com/albums/s265/nitzerebbhead/Sturmtiger/IM00... > > > > >http://i154.photobucket.com/albums/s265/nitzerebbhead/Sturmtiger/IM00... > > > > > > > Derek- Hide quoted text - > > > > - Show quoted text - > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
