I searched but no one has mentioned a way to change motor rotation on the vtx10.

Progauge?

Pics of the new viper I got in the mail today
VTX10R/VST6.5T




Installed

Anybody?

Copperhead has only been publicly announced since the end of November or so, and Viper has shared it's information while they develop and refine it. Which is different for allot of companies, because Viper wants to know what the market wants as they develop it, not force the product on to the market and tell everyone "this is what you get".

The time to develop Copperhead has actually been quite aggressive with it being 8 weeks or so.

I assure everyone that it will be worth the wait. And yes, it is sensor-less, BUT, the performance and drivability is much, much better than other sensor-less systems out there.

Viper still has the VTX10R combined with the VST-550 L & XL motors that are applicable in 4wd SCT. If running the AE truck, use the VST550L motors (they are shorter than the XL, and will fit in the AE truck chassis)

How does the VST-550 compare to the new Tekin pro4 4poles? Does the vtx10r work well with other motors?

It works fine with other 2-Pole 540 and 2-Pole 550 motors. 2-Pole designs were all that were approved to run at the time of the development of the VTX escs, that is what Viper designed around.

With the on-set of 4-Pole 540 motors (even though ROAR has rules against 4-Pole 550 Motors), the VTX is not rated for it. It will cog when running a 4-Pole motor. But in order to run any of the 4-Pole 540 motors, you need to run a 1/8th scale ESC, or whatever ESC the motor manufacturer recommends.

The 550 vs 540 4-Pole comparison is hard to make, because it is apples vs. oranges. But what I can say is that the current ROAR 4wd SCT champ was running a 550 motor, and Billy Fischer has done quite well with his Viper VST550XL motors with wins at the Cactus Classic, JBRL and Arizona State Champs.

In my SCT-E, I have the EPA set at 65% and punch at 25% and have no problems running at the front of the pack with power vs. anything else in the market.

Proguage doesn't have the option to change motor rotation. I have looked through both firmware manuals and nothing. I have tried reversing the throttle on my radio (DX3r Pro) and again, not doing what I need it to do.

I find it very frustrating that no one from Viper is acknowledging this. Most of the new crop of brushless controllers has the option to change motor rotation due to all of the new platforms that the controllers are used in. if the VTX line doesnt have the option, let us know. If the option may end up on the next firmware update, then again, let us know. Or, if there is in fact a way to change the rotation in the ESC, then tell us please.

I love the speed control, but the fact that I am unable to use some of the tuning options that my car has because I cannot reverse my motor rotation is a little annoying. Oh well, I will rebuild the transmission to a 3 gear so I don't have to mess with it I guess.

Are you ESC to motor leads in the correct spot?
A-A B-B C-C??

I have not had this problem on any sensored setup I am running. I just have to switch it in the radio.

Are you switching the radio than doing a recalibration to the Viper?

Anybody? Public or PM I dont really care but it would be nice to get an answer on this.

Nick

As of this moment, there is no setting to reverse rotation, but nobody has really requested it either.

That being said, I am talking to Viper at the moment to see if there is a way to do it. Switching wires on a sensored ESC will do nothing but burn up equipment.

There are two problems when doing this.

(1) - The default mechanical timing in the motor is 30 degrees. Reverse the motor, you will have 30 degrees of negative timing when reversed

(2) - In the reality of how the mechanics work, irregardless of how it is configured (rear or mid motor), you want the pinion gear to be "pulling down" on the spur gear. If all you do is reverse the transmission in the car, without adding a 4th gear, and just reversing the motor, you will now have the pinion gear "pulling up" on the spur, which will greatly reduce your traction.

Mid-Motor cars have been around a long time before the 22 came out. We used to build 1st generation RC10's into mid-motor cars for dirt oval racing. In mod class you could just swap it, reverse the motor and off you went. But you had a car with allot of steering and no rear traction.

We eventually figured a way to install the motor plate on the other side of the transmission and ran the motor in regular rotation. You had a "Mid-Motor" car, the motor was in the same spot, but you had ALLOT more grip.

It is the very reason that a 2wd Buggy has a 3 gear transmission. 2 gear transmissions were tested and tried over and over back in the day. They failed because they required rotating the motor, which in turn made the pinion gear "pull up" the spur. They made the cars very loose.

The DEX210 is a really cool design with allot of potential. The concept of having 4 motor layouts is innovative, but redundant. You really have a car that has 2 useable configurations, and 2 un-usable configurations.

Thank you for answering.

I was planning on running rear motor 4 gear on the DEX because like you say, it decreases rear grip slightly with the way the motor rotates away from the ground. The car has so much rear grip out of the box that a little less rear grip wouldn't hurt. I know there are other ways of going about it, but driving a friend's DEX with the rear 4 gear on our local track is what made me want to try it.

I ran XFactory cars last time I was running 10th scale. I was hoping I would be able to make the DEX handle correctly in MM configuration, but I just couldn't get it to have consistent traction in mid motor build.

Either way, I am very happy with the quality and performance of the Viper electronics. I just started playing with the proguage to alter some of the default settings and try different profiles. Very easy to navigate and use. I noticed that the VTX10 was originally a 1s-4s esc but then switched to a 1s-2s only. Are there plans for a 4s controller in the future? I would love to get rid of my MMP in my E-buggy.

Actually the VTX10R is 3s capable.

There is a VTX8 currently being developed and is in a early prototype stage, and we anticipate news on when it will produced later this month.

Thanks for the info. I can wait on the Copperheads if they are worth it. I am running MMP and Novak 5.5 550 currently. I really like the idea of the progauge and looking for a little more power.