Well, not too long ago I saw a differential on my neighbor's self-propelled lawn mower. It looked like it would fit a tank perfectly. Maybe I should ask him if he wouldn't mind pushing it again...
On Tue, Oct 20, 2009 at 12:26 PM, Steve Tyng <steve...@gmail.com> wrote: > > I have given the subject of differentials in a 1:6 scale r/c combat > vehicles some thought over the years. At one point I was interested > in building an armored car (AC) and may still do so. I looked at the > various differentials currently available and have yet to find one > that I feel is appropriate for our vehicles. On the heavy end are the > differentials built for go-karts. These are to large for a typical > 1:6 scale AC and have monster 3/4" or 1" output shafts. On the other > end of the spectrum are the hobby differentials produced for "monster" > scale r/c trucks. I've looked at these and weren't impressed with > there robustness and many plastic parts. I have seen references to > differentials for 1/4 scale r/c sand buggy's that sounded good but > they were on a German site with little info and the pricing looked to > be exorbitant. IMO the best option will be a dual motor setup (or > quad motors for 4wd) driven from one speed controller. This > "electronic" differential provides the same functionality as a > mechanical one in that it provides varying power to the left or right > drive wheels depending on load. It can be built as robust as required > much as we build our drive-trains currently. The issue will be > finding the appropriate motors for such a scheme. The motors will > need to be relatively powerful and small to fit into the smaller > chassis. For this all we need to do is look to the new electric > skateboard sport where small high-powered motors of up to 600 watts > can be found. While on Allellectonics.com the other day I noted a > nice 135 watt motor that that I have seen used on electric skateboards > and may prove to be ideal for the smaller wheeled r/c combat vehicle. > > > http://www.allelectronics.com/make-a-store/item/DCM-130/24VDC-135W-MOTOR-W/-BELT-GEAR/1.html > > If I were to start building an AC tomorrow I'd get two of these motors > and a single reversing scooter controller and design an AC around > that. > > > Steve Tyng > > > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
