[TANKS]
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[TANKS]
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Re: [TANKS] Rules for ATGM Launchers
Hey everybody, been lurking for a while now and heard about the rocket thing. Anybody ever try to build an M993 M270? http://en.wikipedia.org/wiki/M270_Multiple_Launch_Rocket_System What would that even classify into? On Thu, May 20, 2010 at 9:19 AM, dwconn...@comcast.net wrote: RocketMan was a wheeled vehicle with armament . It fell under the Armored Car category, not the hand held rocket launcher category. The armament type used on the actual vehicle is not significant. I like that rule, BTW. It is simple and encourages a broader selection of vehicles on the field. - Original Message - From: Clark Ward Jr ki4...@gmail.com To: rctankcombat@googlegroups.com Sent: Thursday, May 20, 2010 9:37:00 AM GMT -05:00 US/Canada Eastern Subject: Re: [TANKS] Rules for ATGM Launchers I will vote for a rule change to allow wire-guided paintballs as soon as someone field tests them!! I'm pretty sure that Frank would allow them at that point, too :) I think that Rocketman has a multi-shot marker where it's TOW launcher would be in the full scale. On Thu, May 20, 2010 at 9:09 AM, Weston gamewes...@gmail.com wrote: What are the rules for them?? I know that Rocket Launcher can have One single-shot, muzzle-loaded paintball marker per tube, but the FV438 Swingfire for instance can be reloaded from inside the vehicle. Also, since they are guided missiles, what is done for the fact that the missile will more than likely strike its target? -- 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 -- 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 -- 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
Re: [TANKS] Re: Warthog all-terrain vehicle (ATV)
Wouldn't it just be easier to vary the speeds of the tracks on the first module of the vehicle? Just speculating... or is the whole conversation about how to make it skid steer? On Sat, Nov 28, 2009 at 7:56 AM, callum.king.underw...@googlemail.com callum.king.underw...@googlemail.com wrote: I do find myself agreeing with you but it would be damned cool to see it done. One of my friends is considering making an RC car, Hasnt decided on size but if it was built 1/6 it would be allowed seeming as it is a military vehicle. Vehicle in question is a jackal. If it was built as the mk19 version would it be allowed a paintball gun? mk19 could perhaps counts as a 40mm as that is what it fires. On Nov 28, 4:44 pm, Frank Pittelli frank.pitte...@gmail.com wrote: callum.king.underw...@googlemail.com wrote: A linear actuator may have enough torque to turn 2 halves. Or a combination of multiple actuators??? Sorry to burst any bubbles ... but I don't think the Warthog would ever be an effective support vehicle in the hobby ... despite it's novel appeal. Specifically, common skid-steering (forward on one track and reverse on the other) will *NOT* work because as soon as you reverse one of the tracks on the tractor or trailer, the pivot joint will lock over in one direction and the vehicle will prevent itself from completing the turn. That's how we originally tried to steer the Goer and it was an immediate failure. Even though it used wheels instead of tracks and the trailer wheels were free-wheeling, the lateral friction of the wheels was enough to stop it dead in a turn. The Goer and ZD3000 both use a modified skid-steer control (called tractor steering) that simply cuts off power to the inside tractor wheel when turning, allowing the inside wheel to free-wheel during the turn. That allows the single outer wheel to turn the tractor and the free-wheeling trailer follows it around the turn. Unfortunately, I don't think such a modified skid-steer control will work at all for the Warthog. Since a track has far greater rolling resistance than a wheel, a single track on the tractor will not be able to turn the tractor by itself, let alone with a tracked trailer behind it. We've proven this many times on the battlefield when a tank track stops working for some reason. In those cases, the tank continues to move along with only a slight curve to it's direction. Basically, the free-wheeling track acts like an outrigger, helping to keep the tank going straight. That eliminates both forms of skid-steering commonly used, so what's left? The only approach I can think of that has any chance of working is to use the same approach that the real vehicle uses: computer controlled operation of all four tracks. Specifically, when you want to turn the vehicle, the computer starts varying the relative speed of all four tracks to (a) cause the tractor to go in a given direction and (b) keep the tractor-trailer angle constant during the turn. This is *not* as easy as it sounds, because the trailer has to start and stop turning *after* the tractor does (so it will travel along the same path). Moreover, the amount of time depends on the actual speeds of the vehicles. As a veteran software developer, I wish good luck to anyone that develops the required software. Even if they do get it working, the resulting vehicle will under-perform all other support vehicle designs, rendering such clever programming virtually worthless. Specifically, the use of relative track speeds to turn the vehicle also means that the turning-radius of the vehicle is significantly increased. Tanks have a zero turning radius because of full skid steering. The Goer and ZD3000 have a slightly larger turning radius using tractor steering. Wheeled vehicles using conventional steering have a greater turning radius, limited by the angle of the steering wheels. By far, the worst turning radius would be the Warthog. When it comes to a tracked support vehicle, I think that the best (and perhaps only) choice is the FV103 Spartan as evidenced by SV015 built by Mike Mangus. With a zero turning radius, go-anywhere performance and heavy-hauling capacity, I don't see any other vehicle matching it in the support vehicle category ... including the venerable Goer and UN Peace Keeper. It costs more to build and operate, but over time I think it will prove to be the most effective support vehicle design. But, that's just a personal observation based on a relatively small amount of design and battlefield experience. Frank A high-speed Spartan would change the game Pittelli -- 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
[TANKS] Re: Differentials
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 -~--~~~~--~~--~--~---
