8ight T 9XL

What can I say? I kid is a kick. You should have seen the look on his face when he reaized that the video on this digital camera had audio too. It was priceless.

The performance of the 9XL class of motors is perfect. In fact, I do have my 1512 1.5Y coming back from Neu and I'm already wishing that I had gotten a 1700kv motor, although the 1900kv motor won't be too much hotter.

The believe the value of the video is that it shows useable power. If it had anymore, it wouldn't have been hooking up at all. With what it has now, it still gets a little nuts, but not stupid.

The truck does rip pretty well. The really cool thing about it is that I could still go with 5S, if I did want to get stupid.

In comparison to a nitro setup, there really is no comparison. The acceleration of the brushless setup is brutal. It doesn't have the very top end of some nitros, but the nitros take so long to get there that you never see it on the track on during a bash session. Not only that, but if they do gear for that kind of top end, they sacrifice a lot of bottom. With the brushless, I could easily have dropped in a 5S pack or simply regeared to 16 or 18/46 and that would have had any nitro guy tossing his truck into the nearest garbage bin.

I was at the LHS yesterday and a friend of mine was telling another customer about my truck. He told the guy about a time that we were on the track. I was running my 9XL setup and he was running his CRT with a Rick Brick (what ever that is) mod engine and I SMOKED him coming down the straight. I'm not just saying that I beat him down the straight. I mean that once we got to the sticky part of the straight and I got on the throttle, I left him like he was standing still. By the time his engine wound up, I was at the end of the straight. He tells me that he paid over $400 for that engine.

The point...you don't have to get insane; and as a point of interest...the video was the last of three runs that lasted a few minutes each. As you could see, I was pushing it pretty hard. When I shut it down after shooting the vid, the esc temped at 115 and the motor was a 190. A hotter motor (Feigao) would easily have temped way over 200. This is of course, with the cheapie Feigao motors, but the correlation in temps as you decrease the number of winds applies with any make of motor.

[jhautz]

I'm thinkin you could have dropped that motor temp a little by gearing it up a few teeth. I find the XL motors can run much longer before overheating if you find that perfect "sweet spot" on the gearing. They are much more sensative to both over and under gearing. The Neu and Lehner motors just have larger usable gearing ranges before heat becomes an issue. But if you get the gearing just right, they can run a good long time without getting to the critical temp range.

I have a 9XL on 5s that I can run just as hard for much longer than a few minutes before the temps get that high.


But I do agree. Most brushles setups are WAY overpowered. Much more power than can possible be put to the ground.

[zeropointbug]

I agree, if I ever raced R/C (not one near where I live), that would be a good setup as far as power available. But yeah, those motor temps you have seem awfully high for that setup.

IIRC, it was 15c out the last time I ran my truck here (over 1 month ago) and I had my 7Xl running 16.5v A123 (~4s lipo) geared 18/51 and had crazy power, ran it very hard, the highest temp I saw was 155F.