Hi all,

Have just gotten back into RC racing after a few years away from the sport (brushed motor era) and am looking into different motor options to try things out. Currently I run a R1wurks which I am very happy with but they're quite hard to get here in Australia, and so i need some other options to get a motor for my father.

From reading around I gather that trinity is up there with the best, but there are so many options and its all a little confusing! Was hoping someone would be able to help me out with a few questions I have:

What do the terms revtech, maxzilla, big blue, killshot, etc mean?

Whats the 'current model' of trinity motors? I was under the impression that D3.5 was newer than killshot motors, but i have been told otherwise so i'm confused about the chronological order of these motors.

I assume newer is better except in the case of D3.5 vs D4?

Thanks a lot if someone could explain!

D4 is latest and greatest.

D3.5 is the fastest but is not ROAR legal. Killshot came after the D3.5 and released before the D4.

Big blue is not ROAR legal since the stator wire is thicker (which is why the D3.5 was deemed illegal). Maxzilla is just a term for a motor coming equipped with 12.5mm turquoise torque rotor. You want to buy it with this rotor unless you are running 1/12 or F1 where you don't need the torque as much.

Dan has it right with respect to the Trinity motors (BTW if you don't have to be ROAR legal those Big Blue Stators are awesome). Also agree with his statement on the 12.5mm torque rotor. I have two Kill Shot (RPM Stator) and the one the torque rotor is always the fastest on the track. Also I understand that only the 17.5T D3.5 motors are not ROAR legal, the other D3.5's are still OK by ROAR. In addition to the D4 (both those from Trinity and Fantom), other motors I've had good luck with are the ORCA TX and Team Powers. I run 21.5 motors and normally in a field of 10 USGT cars there are at least 6 different motors all running within a second a lap. You just have to have the correct timing and FDR for each motor as there is no one size fits all so it really depends on what's available there. One nice thing about the Trinity based motors is that the rotors are all interchangeable (D3, D3.5, Kill Shots, and D4).

unfortunately, the 13.5 motors are NOT roar legal. I bought one this past spring to be used at the REEDY Race, and could NOT use it. I have a very good 13.5 D3.5 for sale now, if someone wants it.

the only D3.5 that is still roar legal is the 21.5. The 10.5, 13.5 and 17.5 were all removed from the list due to having wire that was too large.

Whoops, forgot to mention that the D3.5 21.5 is legal, because I have one myself.

On road is much easier to figure out than oval I race both, and for most of the big oval races, it depends on the class whether you can use the non roar approved D3.5s. Very confusing to say the least and the constant flip flop has pissed almost everyone off. Hopefully next year and beyond will be better. ** Sorry for the rant ** I love the trinity motor design and configurability.

Yep my bad I misread my email. The 13.5 did not pass Tech at the ROAR Nats. In addition to the D3.5 21.5, I also assume that the D3.5 25.5 would be legal to use too since there are no ROAR specs for those motors. Hopefully that will change soon for us VTA guys that would like more than one motor OEM to choose from for USVTA.

Thanks for the replies guys. So from reading here, the D3.5 21.5 is still highly competitive against the likes of D4 and Killshot 21.5's?

Also i'm looking at the BIG BLUE D3.5 21.5 for 1/10 TC on Asphalt. Is this ROAR legal? Not too worried about it since they only really care about the turn of the motor at my local track (couple others running D3.5's too) but I thought i'd ask anyway.

Does anyone know what rotor comes with it stock? Since it doesn't say MAXZILLA i'm assuming that it just has a standard 12.3mm rotor? Would it be a good idea to buy a 12.5mm rotor aswell? I run on a 130ft by 65ft fairly flowing low/med grip asphalt track. Also in Australia we can get quite high ambient temps, up to about 35-40 degrees C

Any variant of the big blue is not ROAR legal. If you are sticking to Trinity motors only, get the D4 21.5 Maxzilla. It is a little better than my Killshot and D3.5 21.5 motors. I just ran one last weekend. Its not too big of a difference power wise but it runs really cool.

Dan is absolutely correct about the Big Blue motors - at least he agrees with my source of information: the BIG BLUE motors are not ROAR legal. But if, as you say, they are only concerned in Australia about the number of turns of wire in the motor and not about the motor being ROAR approved, THEN GET THE BIG Blue motor. I got a D4 21.5 big blue stator and put it in my D4 motor because our series says "any 21.5 motor" and wow what a difference it made. Much higher RPM with the same amount of timing. BTW it was the maxzilla version of the D4 21.5. Still working on the Timing and FDR but it looks good. However, if you are wiling to try something other than Trinity. the stator coil IRs on the big blue stator are much better than the original D4 stator but only marginlly better than the stator coil IR that are on my Team Powers and R1 motors.

If I would get the maxilla d4 does it have less rpms then the normal d4

Old thread, don't even get a D4 (unless its the 1s short stack version)

To answer your question, yes the Maxilla version usually has less RPM than the normal version of the Trinity series of motors (D4, D3.5, Kill Shot, etc.) because the maxilla version has a 12.5mm rotor and the standard version comes with a 12.3mm rotor. While having less RPM, the maxilla has more bottom end and most racers prefer the bigger rotor for on road. I had two Kill shot RPM motors; one with the small 12.3mm rotor and one with the 12.5mm rotor. Our large flowing outdoor track here (160Ft straight) I consistently got better lap times with the Maxilla motor even though my dyno indicated the 12.3mm rotor gave me better RPM (at the same timing).

I don't have much D4 experience, I now only have one, a 25.5 and it is not ROAR legal but it is a real screamer! I sold my 21.5D4, it was only marginally better than my kill shot (both with the 12.3mm rotor).

I am looking to get a new 17.5 motor for my SC5m. I was thinking about the Trinity Monster Horsepower 17.5 Maxzilla or Team Scream 17.5. Has any used either of these motors? Is the new Trinity motor better than the D4/24K? I run on a small/medium sized indoor clay track. There is medium high/high traction. I want to buy a stronger motor than my Tekin Gen3.