8ight T conversion

I just have unusually bad luck with some things and the controllers that I've gotten lately seem to be just another one of those things. MGM says that my controller should ship back to me by the end of the week and I'm sending my Quark back to S&T today.

I just thank goodness for all of these little MMs that I have laying around.

I'm also hoping that my Neu 1512 1.5Y gets here today, although it will probably be tomorrow. I went with the smaller motor because the 8ight T is going to be my race truck. Since I've had it on the track, I haven't bashed with it much. I'm just going to need to go through it and see where I can shave some weight. I believe that with the 1512, I should be able to drop down to a 6Ah battery pack and possibly lighten my battery tray. That should take another 8 ounces off and bring the truck in at under 10 lbs.

I've gotta say that this Losi 8ight T has resparked my interest in running on a track. As Mike says, it has a neutral handling and responds well to minor tweaks and tuning. I just increased my droop in the front and added Holeshot tires. I'm hoping that this will get me that extra little bit of on power steering. If it does, the truck will be done for me. Geared for about 30mph or so, it's wicked, WICKED on a tight track.

I am hoping, at some point, to be able to put it on a longer track. I'd really like to be able to gear this thing up and see what it will do when given the opportunity to flex its muscles.

Oddly enough, with all of the steering and handling that this truck has, I'm looking forward to getting the MGM back. I kind of want to try it out with the free wheeling turned off. It's probably going to make a truck that takes a lot of discipline to drive, but should also take control to a new level.

We'll see.

OK guys, another update. I installed the 1512 1.5Y in my 8ight T. What's with that springy rebound noise that the Neu makes when you spin the shaft? It's a bit disconcerting and sounds cheap. Is there something wrong with my motor?

I was also expecting performance that equaled my Feigao XL motors, but I have to say that the 1512 doesn't have nearly the nuts that my 9XL has. I have the Neu geared the same what that I had the 9XL geared (14/46) and it is definitely not showing the ground shredding performance that the 9XL did.

Maybe it just isn't enough motor for the truck. Should have gone with the 1515 I guess.

[Serum]

Nothing wrong with it;

It's not cheap; the proof of the power from the magnets; it's the resonance on a dead point of the rotor in the stator. It's pure because of the magnetic force.. this is completely normal. With a fat pinion the 'frequency' will be lower, due to the added mass.

I am surprised though that the 9XL shows more power. Can you play with the gearing?

[BrianG]

I agree with Serum. That 1512 should have at least as much grunt as the XL, if not substantially more. And yeah, that springy feel is just the pull of the magnetic poles. You can feel that on the 9XL as well, it's just not nearly as strong and the 9XL only has two of those "detents", while the 1512 has 12 detents IIRC.

Actually, I don't feel it (that springy sensation) on the 9XL at all. As for the grunt, the 9XL surpasses the 1512 in raw power. Running the 9XL geared 14/46 the power is very good. Running in grass, I can pull the wheels off of the ground at will. When I pick the truck up and hit the throttle, the tires look like they are about to be torn off of the wheels. With the 1512 and the same gearing, the performance is mild. With the same gearing, it will barely balloon the tires. I increased the gearing on the 1512 to 16/46 and it's better, but nothing like the 9XL.

On the other hand, the 1512 in the truggy is very smooth. As I said, it doesn't display the brute power of the 9XL, but it is far more controllable. I definitely don't regret having bought it. I'm going to take it out to the track this afternoon and see how it does.

Perhaps a gearing change to 18/46, or even 16/44 might do the trick for me. I'm going to have to mess with it. On the plus side, in my 5 minute hard runs, the motor hasn't even warmed up.

When I get the opportunity, I'm going to pick up a 1515 1Y. I had my eye on the 2.5d, but after having run the 1512 1.5Y, I think that the 2200kv 1515 might be the way that I need to go.

I'm also curious to see what the 1512 1.5Y will do on 5S. When I get my Compro or Quark back, I'm going to try it out. The 9XL on 5S was just too out of control, but the 1512 might just be the ticket.

On a side note, I'm wondering if the performance I'm getting from the 1512 is sub par and I got a bad motor. If I did, it would just figure, with all of the bad luck that I've had lately.

[Procharged5.0]

Aangel,

Where are you located????

I'm in Louisiana, just outside of New Orleans.

[Procharged5.0]

OK,

If you were closer I'd let you try the 1515/1Y I've got. It's sitting idle for the moment.

I appreciate the thought. I'm gonna put the 1512 on the track today and see how it does in the "power on tap" department.

[Serum]

Did you checked both motors with Arturs (griffinru) his calculator?

[bdebde]

AAngel:

Any cogging with the Neu on the MM?

I haven't checked anything on the calculator. What should I be checking. The 1512 1.5Y that I got is downright slow. Very unimpressive on the track. It just doesn't seem to be turning the rpms that it should be. I'm starting to wonder if I got a mislabeled motor. It runs fine and runs cool. It just isn't very fast. I geared up to 16/46 and things got a bit better, but for a 1900kv motor, I shouldn't have to gear up that high. With my 9XL, 16/46 was too much. I had to back down to 14/46 for the track; and the 1512 has a higher kv rating than the 9XL. I was really expecting 8XL performance out of this 1.5Y.

I'm going to put the 1512 on the shelf and hope that Castle releases a fix. Then, I'll put the 1512 in my buggy and see how it does. I'm going back to the 9XL for the truck.

What can I say...another bad choice. I should have listened to everyone that said to go with the 1515.

[BrianG]

When you say "mislabeled", do you mean the box it came in, or the sticker on the end bell? I got a mislabeled motor, but the incorrect label was on the box.

The label on the motor say 1512 1.5Y. I'm thinking that the label on the endbell is wrong.

[Serum]

What makes you think the 1512 is mislabeled? mayby it's the 9XL which is running at a higher KV?

i've seen a 1509 in action on 4S in a revo, (2600kV though) and trust me; the power/torque is right there.. Have you got an eagletree system?