Can a brushless motor be made to run reverse rotation? I currently have a 4300 motor and SS speed control that I would like to put in an old EV10 left side drive.
Mike

Yes have you ever put your r/c car in revers ? most brushless speed controlers and motors have revers and they dont care how fast you make them go either way.just revers the servo control in your radio

i'm not certain but you could probably just run the wires to the motor differently

I am sure the timing would be off when running in reverse.
Butch

You can't run the Novak motors in reverse by switching wires because they have built-in timing and sensors. If you just use reverse instead of forward by reversing your radio, you get no brakes except when you are driving the car backwards.

Instead, get a Novak XBR speed control which has a speccific program to run the motor in reverse rotaion with proper brakes and full power. But you are limited to an 8.5 as the fastest motor with an XBR.

But you can't do it with the SS and the 4300.

I just want to ask a question and not get flamed..... Why would you want to drive your oval car off the left rear. Hyperdrive tried them some time ago, and the only reason I can come up with is if your are running a Velidrome. Everyone here wants to find a secret to speed, but the real secret is corner speed. Find the secret to that and then you can worry about how to drive it off different wheels. Some drive with the throttle, and some drive with setups. Dirt vs. Carpet vs. Asphalt all all different, but the same. Make it handle in a corner, and the straight will take care of itself.

Give me an example of what you are trying to do, and then your request may make more sense at this time.

Troy Gutterridge

TroyGut,

TRINITY also did a LS drive car..back in the WAY BACK.

I believe their thinking (Was a NEW Product to SELL...reverse rotation motors), but beyond that...the WEIGHT of the motor would be on the LR tire, requiring LESS tweak to get the L.S. bite.

That is the ONE and ONLY "T" car I ever drove...and no matter what I did with that car...I could NOT drive it. At that time, the surface we raced on was slurried asphalt in a local parking lot w/ low traction that we were NOT allowed to spray...

The way it turned, I always thought 'Man, this car would probably be AWESOME on a HighBite Carpet track....'

If you were to reverse the order of the hall chip outputs in the sensor harness it might fool the speedo into running the motor backwards. I'd have to either think a little harder or try it to know for sure. Of course you don't want to move the power, gnd or thermistor leads or you'll end up toasting the chips.

The EV10 LSD was capable of running very fast on flat carpet back in the day. That doesn't mean it'll be competitive now of course. before investing a ton of effort in it I'd make sure the BL motor fits in the pod.

SW Tour, I totally forgot about the old Trinity Car. You are correct that would have a lot of LR bite. They also did not run the shocks back then so it would have been harder to tweak. I believe the cars of today have a great advantage and do not need the setup anymore. That is probibly why we don't see it today. Maybe that is why your Styker doesn't have it. You spent to much time back then working on setups....

Nice Car, many here in Naples have them and I like them. I have not gotten to play with it, but was thinking of the conversion kit one day. I like the servo setup in it.

Troy

I've seen a left side belt drive car run at the Indy Velodrome with 6-cell stock a few years ago. The car was good, but the driver had the chassis a bit too low causing some erractic spins due to bottoming out. The only problem they had was finding a front pully with enough teeth to get the proper roll-out.

IndyRc Racer,

I was just in Indy for the MotoGP race and went and watch a couple guys running on the velidrome. That looks so fun. I wish everyone could watch a car run around one. that looks very hard as you are a long way away at some points of the track. The size of the place (radius of the corners) is why my original posted stated the only place I could see the LSdrive working is on one of those tracks.

If you don't mind me asking, but how much time does the car spend in the air on one of those tracks? It appears that suspension is very important there. Wouldn't it be nice if you could run like a COT with TC front shocks on a Custom Work,Hyperdrive, or higher quality car. That would be so cool.

Troy Gutterridge

Troy,

I don't know what they are using at INDY for front ends, but on the Encino Velo in CA we run basically a version of the old Associated Dual Sport front end with the same shocks that we use for side shocks.

Racing on a velo is not by anymeans hard. The cars have very little steering, if the bodies are setup correctly they are very stable, and most of the race you are running the throttles PEGGED.

Now, avoiding a crashed car at 60+ MPH can be tricky, and/or saving a car that does get loose or head toward the wall..and a lot of times when you DO crash one - there's not a lot left.

What's really fun is running a VELO one week, then running a 160 ft CARPET track the next.

It's ALL fun stuff!

Going into turn 3 the track dips down, so cars can get some air for a split second if you hit in the wrong spot. Worse thing it does is cause you to push going through the turn. With a decent setup the Indy Velo is fun to drive (as long as you have the steering turned down). The biggest danger at that speed is lack of driver communication on the stand. Usually the bad accidents are from 2 objects hitting a drastic speed differences - stopped car on track or 90 degree hit on the wall.

There is no need to run a tricked out front end to go well if you properly setup the Associated front end. However, the trick front ends require less maintenance.

If you were to reverse the order of the hall chip outputs in the sensor harness it might fool the speedo into running the motor backwards. I'd have to either think a little harder or try it to know for sure. Of course you don't want to move the power, gnd or thermistor leads or you'll end up toasting the chips.
Switching the sensor wires around in the sensor plug won't solve the more significant problem which is that the sensors are not equidistant between the stator poles. There is some built-in timing in the location of the sensors on the timing ring (this was pointed out to me by NovakTwo when I asked about reverse rotation on RCTech and I found it to be true). It is enough that even using all the adjustment available with the timing ring, you can't even get them centered, let alone adjusted to the same extent in the opposite direction.

I wanted to run an HV motor in reverse for a conversion. It is now possible with the HV-Pro which as a rotation selector, and with the XBR also, but not yet possible with a racing sensored ESC. And sensorless doesn't work well with the rollouts we use for oval.

Understood on the mechnical timing on the motor.

With the XBR I assume when you run it in reverse rotation mode it has increased timing advance at the speedo to compensate for the retarded timing at the motor?

Could a person then run the speedo in reverse rotation mode, but swap the sensor wires to make the motor go forward again resulting in greatly increased timing?

Thinking out loud.

About the left side drive. Can't the pod blukheads be sawpped and the upper pod plate be flipped around?

If you need to reverse the rotation of the motor I suggest going sensorless. Maybe the Tekin or a Castle will get you going.

Understood on the mechnical timing on the motor.

With the XBR I assume when you run it in reverse rotation mode it has increased timing advance at the speedo to compensate for the retarded timing at the motor?

Could a person then run the speedo in reverse rotation mode, but swap the sensor wires to make the motor go forward again resulting in greatly increased timing?
Thinking out loud.
Interesting thought. But you may then have so much timing that the motor will run very hot and very inefficient.

Their are motor mounts on both sides of the pod. I just liked running with the weight on the lr. It required very little tweak and was bad fast on a flat carpet oval. And yes I know this is an older car, I just hate seeing it sit on the shelf.

Sensorless Mode, I posted it before
Castle or Tekin.