Fastest MT?

viperdout · Post by **viperdout** » Thu Mar 10, 2005 5:26 pm

Who owns it? I think I might be up there with a top speed of 11 kmh:

The Mini-Z/Iwaver boards make them any faster?

LBRC · Post by **LBRC** » Thu Mar 10, 2005 9:44 pm

9km/h for the IW-02 CB with the orange gear set and stock FETs, after about 20 minuets of driving time on the LiPo. I charged it and did a second run with the fresh battery but it made no difference still 9km/h steady, hands off using a ZZMT tire to prop up the front.

Thanks for posting this I wouldn’t have thought of trying the speed checker and since it works I now have a way to see what replacing the FETs with a 2x3 stack actually does. My speed checker might read a little slow though, some of my more extreme Xmod, Iwaver, and Mini-Z experiments kept breaking it’s gears until I replaced them with metal ones but now the axle is not quite straight, sort of like a built in load.

Of course there is just enough room to squeeze another LiPo in on top if you took the lights out but that would make it top heavy and I’m not sure what 7.4 volts would do to the motor.

viperdout · Post by **viperdout** » Thu Mar 10, 2005 9:49 pm

LBRC wrote:9km/h for the IW-02 CB with the orange gear set and stock FETs, after about 20 minuets of driving time on the LiPo. I charged it and did a second run with the fresh battery but it made no difference still 9km/h steady, hands off using a ZZMT tire to prop up the front.

Thanks for posting this I wouldn’t have thought of trying the speed checker and since it works I now have a way to see what replacing the FETs with a 2x3 stack actually does. My speed checker might read a little slow though, some of my more extreme Xmod, Iwaver, and Mini-Z experiments kept breaking it’s gears until I replaced them with metal ones but now the axle is not quite straight, sort of like a built in load.

Of course there is just enough room to squeeze another LiPo in on top if you took the lights out but that would make it top heavy and I’m not sure what 7.4 volts would do to the motor.

Yeah, and I can't add another li-po to mine either without frying the board. I used my watch to prop up the front of mine.

LBRC · Post by **LBRC** » Thu Mar 10, 2005 10:01 pm

Is that the one with the stacked FETs? Is it using a Kokam 145?

I was surprised that 20+ minutes of driving made no difference in the speed.

viperdout · Post by **viperdout** » Fri Mar 11, 2005 2:30 pm

LBRC wrote:Is that the one with the stacked FETs? Is it using a Kokam 145?

I was surprised that 20+ minutes of driving made no difference in the speed.

I've been charging mine after about 20 minutes. At that point the edge comes off the battery and it doesn't pull the freakish 3-wheel wheelies like before.

backdrift · Post by **backdrift** » Sat Mar 12, 2005 10:34 am

Hey LBRC i had a 9 volt hooked up to one of these for no apparent reason, just sitting on the motor and it seemed to do fine.. It did get hot although so you will be needing a heat sink.

viperdout · Post by **viperdout** » Wed Mar 16, 2005 1:28 pm

backdrift wrote:Hey LBRC i had a 9 volt hooked up to one of these for no apparent reason, just sitting on the motor and it seemed to do fine.. It did get hot although so you will be needing a heat sink.

LBRC, was it just straight to the motor or through the PCB?

LBRC · Post by **LBRC** » Wed Mar 16, 2005 2:41 pm

Backdrift hooked up the 9 volt to the motor.

I haven’t tried anything yet but since I put plugs on my LiPo’s I was thinking of making a series adapter, just for fun, to let me plug two together for 7.4 volts, although with the orange motor it’s already faster than the pudgy little wheelbase can really handle and by adding a FET stack it looks like I get an extra 2 km/h. I’m currently working on a tut for the Mini-Z/Iwaver CB w/Sub Micro Servo & LiPo mod so I have things sort of torn apart for photo’s right now.

viperdout · Post by **viperdout** » Wed Mar 16, 2005 3:00 pm

LBRC wrote:Backdrift hooked up the 9 volt to the motor.

I haven’t tried anything yet but since I put plugs on my LiPo’s I was thinking of making a series adapter, just for fun, to let me plug two together for 7.4 volts, although with the orange motor it’s already faster than the pudgy little wheelbase can really handle and by adding a FET stack it looks like I get an extra 2 km/h. I’m currently working on a tut for the Mini-Z/Iwaver CB w/Sub Micro Servo & LiPo mod so I have things sort of torn apart for photo’s right now.

Sweet. I just ran mine outside for a little bit, and it was SWEET! It's charging now...

LBRC · Post by **LBRC** » Thu Mar 17, 2005 8:17 pm

Just finished the duel cell adapter on the speed checker the stock CB is getting 14km/h and the 2x3 stacked is getting 15 with occasional jumps to 16 km/h. The first road test didn’t go so well though it tends to jump up in the air and roll anytime it hits a little piece of gravel or small bump but it is extremely fast for something 3 inches long and weighing only 80 grams. On the kitchen floor it handled much better but my kitchen and house for that matter is not big enough at that speed. Of course with the digital Iwaver controller it’s a simple matter to quickly tone down the throttle, or just use a very light trigger finger.

I tried three different battery locations first I put it on the bed which looked good but was too top heavy.

Then under the bed since the dodge body has just enough room, a tight fit but it works better than on top.

It handled best with the 2nd battery attached to the front like a brush guard, but it had to be positioned just right so that the wheels don’t hit it when turning.

A small lead weight taped to the bottom of the car might help keep it on the ground.

viperdout · Post by **viperdout** » Thu Mar 17, 2005 9:04 pm

WOW! I'm probabvly gonna re-wind one of these motor for more speed in the next couple days.

Post by **CaboWabo** » Thu Mar 17, 2005 11:11 pm

That rules!