The new 17.5 is more RPM based than the VST 17.5, so gearing is much more comparable to some of the most popular motors (Reedy, Trinity, SchuurSpeed). From my experience with the VST 17.5 I am 2-3 teeth lower on gear with the BE motor and it is more powerful throughout the RPM range, even with the kit rotor. My opinion is that the 12.5mm rotor is a must if you are racing stadium truck or short course, but the 12.3mm rotor is competitive in buggy. The 12.5mm mid torque/mid RPM rotor just makes the motor that much better.

Question, I have a vtx10r in my 4wd buggy and need more brakes. How can I get roughly the same amount of brakes out of it like I have in my orion r10

good stuff.

Hopefully Viper will consider the idea of "build your motor" like novak had / has (not sure if still around, but was a nice option) so you can get it from them direct in the configuration that you want.

I have heard this and similar comments a few times, even locally. Every seems to be very impressed with the new motor, they just want the option of buying it directly with the rotor they want. Who knows what options may be available in the future? I do know that several companies offer that option or the option of buying either an RPM or a torque based motor. I don't mind getting the rotors as a separate option, though, as it allows me to pick the rotor for the track. The stock 12.3mm rotor is fantastic for more open layouts where you carry a lot of speed, but the 12.5mm rotors are very good on tighter layouts.

First time out with VTX10RBE/BE motors. These things are fast!! Bumped up the timing to 20 on can for med sized track ..plenty of rip and stayed around 120f+.

I have 80 brake force and epa on radio at 95...plenty for B44.3.

Raise Brake Strength
Lower Brake Freq

That is what the R10 has a really low freq, you can often hear them squeal under braking because of it.

As for selling different combinations of motors. Never say never, but we one thing I know for sure. We are trying to get a package to the regular racer trying not to break the budget. Spec class racing is designed to be close, who is the better driver -- not who has the biggest pocket book.

Besides, you loose more time via driving, tire choice and set up than you gain with the extra $50 paid for a specialty 17.5 motor. I can have the fastest motor in the joint, but doesn't help with I crash - trust me I know and freely admit it.

I know this isn't the on road section but this thread i can't see an active thread for Viper in the on road section.
I'm interested in one of the BE motors for 1S use, a 12th scale class we have in the UK, GT12. For 1S blinky with 13.5T motor what rotor would be best, and will Viper produce a 1S specific motor like a couple of other manufacturers have?

I was hoping to see the answer for this. My VTX8 has always been great with the brakes, but all of my VTX 10 and 10R (all BE models) seem to have very soft brakes so I'm anxious to try this. Nick, as always, your presence here with your input is exceptional. That was one big factor in choosing Viper for me.

Thanks, I really like the red motors and want to get a 13.5 for my st. I just noticed the b.e. line and was curious about the power difference, The aluminum vented can looks great also. I'm definitely going to try one...soon.

I think that is a great thing, but something to keep in mind is that if by default the best spec setup is a torque rotor for your track, if you don't have that option to get it all in one from the start, you are already down cost wise relative to what other companies offer, and hence, may loose out on that customer who is trying to be cost conscious relative to what other motor options are out there when they go looking for a new motor, especially if the perception is that the performance is "close".

All in all though looking forward to hearing how things go with these motors as time goes on and if stock racing picks up here, who knows, maybe I'll get in on the action for the summer.

Right now if the weather holds to travel the 17.5 VST will get some action tomorrow in 2wd buggy carpet racing. for the track conditions, the 12.5 rotor should be the ticket.

Badger -- no plans to design a 1s only motor. Partially because its not a large market overall. More importantly, 99% of the racers won't see an actual performance difference between a regular 17.5 and a 1s designed 17.5. Its sounds very impressive, obviously costs more money (if you can afford it), but it won't gain you .4 a lap. Unless you have other reasons to be .4 behind to start.

Cain - one of the key words you mentioned is "perception", marketing and brand recognition don't equal lap time. Yes, some companies sell 3,4,5 different versions of motors - little confusing to some. Cost wise the way we currently sell motors is similar to others, plus the option to try different things. i.e. - buy a motor by a option rotor = similar price, more things to experiment with if you want - more for your dollar.

King - hope you like it. One of the great things about our product line is the ability to adjust - as much or as little as you want to customize the feel for yourself.

New Black Edition is an improvement over the older motors in every aspect. More RPM, more Power, more Efficient, and still smooth to drive. There may be older style motors out in hobby shops, etc. But from us directly we don't have many left. Black Edition is where its at!!!

Yeah I can see that, its mainly for those that already know that they need rotor B versus what comes in stock persay.

But that will probably get sorted more so when people get a chance to drive the motors more, etc. and who knows, maybe at that point there will be an offering of some sort or its found that its not needed by the race community. Just would hate to see you guys end up like SPs V3.0 motors for stock where out of the box you need to buy timing board this, rotor this, etc. to be competitive against other brands.

side question, for a high traction tiny track where torque is king, how does the stock 17.5 BE with its 12.3 rotor compare to the 12.5 rotor equipped 17.5 VSTs, from a pure torque perspective?

The 4 screws that hold the fan on the VTX8, what thread is that, I measured near to 3,5mm, is it UNF or UNC and if, what size?