:005:

Heat aside, you might also break the shaft on that poor little novak motor. If you want to keep it cheap, go with a Mamba Max and Feigao XL motor. For 4S, I'd recommend either the 8XL or 9XL. I'm running the 9XL and am more than satisfied with the performance.

I also just ordered the Monster motor mount for my 8ight. I know that I already have mine up and running, but Mike's is so purdy.

Now that I've just realized that I'm posting in my own thread, I'll update on my 8ight.

I got the Quark back into my truck. I also wired up a bank of six extra capacitors to in an aluminum block. I mounted the Quark on top of the aluminum cap block and the mounted that on top of a 1/4" piece of aluminum plate mounted to an aluminum standoff that mounts to the chassis. Last night, I ran the 8ight pretty hard on 5S for a few minutes and the Quark got up to 130*F. That sucks. I'm going to have to get it out on the track and see how it holds up.

The only reason I got a Quark was so that I could run a Neu motor. I may go back to the MM if I can get a Feigao to run under 200* for a 30 minute main.

AAngel

Try the Neu with the mamba! I want to know if it will work ok.

bdebde, it would seem that the Neu runs well with some Mambas and not others. I think that I do have one particular MM that does run head and shoulders above my others. I may get lucky with that one.

A short while ago, I was all hot and heavy to get a better controller. That's why I ordered the Compro and Quark, but since having added the caps the MM, it's almost a different animal. I like it a whole lot. I'm almost thinking that if the Lehners were more readily available, I'd go with the Lehner and continue running the MM.

All of these choices to be made. What I need to do is win a lottery. Then I could buy one of EVERYTHING.

YEAH, ONE OF EVERYTHING!

I have been looking hard to find a Lehner, without any luck. I wonder how long it would take to order from Lehner?

My Mamba has been runnning great with the 7XL on 4s. After adding a small fan, it runs so cool I don't even bother to temp it. Wish I could say the same for the 7XL, it runs hotter than he11 (still waitin on my 8XL).

This is the latest version of my setup...

http://i154.photobucket.com/albums/s...r/DSCF0282.jpg

I ran it tonight with the 40 series Moabs, geared 13/46 on the 9XL with the Quark esc, with a maxamps 4S 8Ah pack and it thermalled after about 3 minutes of running. I thought I heard it cog, so I'm figuring that it was overgeared a bit. What really worries me is that the Quark didn't feel all that hot. It looks like I'm going to have to send it in again as it seems that the thermal pad has let loose (or does the Quark have an over current protection?).

Once Mike's mount gets here, I'm sure that it will look prettier.

that doesn't look like the stock spur, what spur are you using and does it fit on the stock diff cup that came with the losi? did it require any mods?

kyosho spur i think, fits.

That is a 46T Kyosho nylon spur gear. The Losi 8ight center diff cup is the same one that is used in the Muggy and Sportwerks 1/8 scale vehicles. The stock diff cup did need to be modified, in that I reduced the outside diameter of the upper portion of the cup by about 20/1000ths. It is my understanding that the Maximizer aluminum diff cup does fit the Kyosho spur without modification, but I haven't confirmed this myself.

what motor/esc are you using

His post with the picture has all that info in it. (post #46)

And the saga continues....

I had to do the cooling mod to my brand new Quark yesterday, just to keep it from thermalling. I ran it for a combined total of about an hour and the Quark quit on me. This was my second Quark. I exchanged the first one for this one. I really don't see what all of the ranting about these Quarks has been. From my experience they are real pieces of crap.

Now all I have is a $280 pretty aluminum box that does nothing and I can't send it in because I had to do the cooling mod to it.

that sucks aangel. I was debating picking one up to try with my neu. now I guess I will either chance it with the mamba and see what happens or just hold on to it till tekin or castle release something better.

fyi, if it makes you feel better I think I have had some of your luck this week. The other day I took a new mamba change wire, plugged it in and smoke. Then yesterday I changed my battery tray, and put to long of a screw in and punchered my lipo.

Oh crap gixxer...sorry to hear that you're having some of my luck.

I really don't want to steer you away from the Quark. Many here are running them with success, as long as the heat issues are addressed. I just know that I won't be buying another. It just kind of rubbed me wrong the way Frank at S&T kept coming back to the fact that the Monster Pro is NOT a 1/8 scale controller, when their distributor (Horizon) advertises the controller as being popular for 1/8 scale conversions.

I do have to say that their customer service is good. I just have to wait and see what they do about the latest one going up in smoke.

What did you do about that lipo? Did/could you try to salvage the remaining cells?

For those keeping up with this thread that are considering doing an 8ight, here are updates....

I just ordered a Neu 1512 1.5Y for the 8ight. I've grown tired of the heat issues with the Feigao motors. I do have my truck running well with the 9XL on 4S. As you can see in the pic above, I had to turn a custom heatsink for my motor. It completely encases the motor and is a tight fit. I had to do some mild pressing to get the motor into the sink. It didn't do anything to reduce temps, but I can now run a 30 minute race before the temps reach critical.

At this point, I'm thinking that the MM esc with a Feigao 10XL geared 16/46 may have been a better racing setup, but I'm not experimenting with the cheap motors any longer. I'm just hoping that the Neu will run reasonably well with the MM. I've found the MM to be the best esc for my tastes, in terms of smoothness. My friends who also regularly drive me truck commented that they like the MM better than the Quark. Although the Quark is just about cog proof, the take off is also a bit more abrupt. If my Neu doesn't act right with my MM and Castle doesn't release the Neu fix; I'll do whatever it takes to keep running my MM. That may mean going to a Lehner, although I'm sure that the 1940/9 won't be bad either.

I've been driving the truck hard, meaning A LOT. Just about everyday with a lot of track time. Lots of jumps, hard landings, and wipe outs. The only things that have broken are the outer rear hinge pins (actually screws) and one rear wheel hub. It's a tough truck, but it's starting to show signs of wear. I can tell that things are starting to loosen up. The bearings in the center diff are making a terrible screeching noise now too. I just placed an order with Avid for two complete sets of bearings.

I also installed Mike's motor mount. It's pretty. The chassis mounting holes were a bit shallow, so I had to cut the screws. Later, I'm going to get a tap to cut the threads a bit deeper, but I'm sure that this will be fixed in later versions of the mount. Other than that, I would have liked to have seen a relief cut to allow easier access to the pinion screw. On the whole, the mount is a keeper. I was going to go back to my homemade mount, but it is heavier and for racing, I'm counting ounces.

For those of you still on the fence trying to decide if you want one...don't even hesitate. I didn't like the 8ight buggy at all, but the 8ight T drives like a dream and it's as tough, if not tougher, than other trucks out there.

I'll post a pic later, after I get some sleep.

my motor mount was the same way. I just cut the screws a little. I also finally got to try out the 8t on the track. it seems a lot easier to drive then my 8ight. I tried it with the stock set up with a 12xl motor on 5s. It jumped nice and handles well I just want to get a little more side bite and probably change the center diff oil.

now just like you I am waiting for castle to release an update for the neu. I picked up a 1512 3d for the buggy and a 1521 1y for the truck but haven't used them yet. I was going to set up the truggy with it first but when the MM went during setup I didn't want to push my luck anymore.

that must suck. you can't havebad luck forever

I feel like I am the only one who hasn't done the internal mod to my quark 125(I do have heatsinks on it though). In my revo, I can drive for an hour without a thermal. The only time I had it thermal was when I was running it in my LSP geared for 50mph with a 2200kv motor on 4s. Also AAngel, I thought you would like to know that I did a little test. I can run a full 8000mah 4s pack through my revo with a quark 125b and Neu 1515 1/y and have the temps stay around 115f-120f on everything. Then I took my 9xl geared the same way, same everything and can only run for 15min before the motor temps get to 140f+. I was surprised by this, I thought that the 9xl would run cooler than a 2200kv motor; guess not...

Bye:018:

cem gates, yeah that's about what I found. The Feigaos will get HOT. You can't prevent it, you can only delay it a bit. I was able to with the custom heatsink, but there are times when I run for way longer than an hour and changing motors is a PITA.

I'm also hoping that Quark will take care of me with my Monster Pro. I sure would like to be able to give it another shot.

with all the trouble you have had with it i would see if you could get it fixed and then sell it on ebay or somthing and buy a different esc

I actually used the shorter radio/servo tray screws in the motor mount, which are a little shorter - these fit perfectly and the longer screws that come in the motor mount stiffen the plastic servo tray a bit from the longer thread contact. I will drill and tap deeper on the next batch - I had already swapped the screws and designed the mount around the shorter radio tray screws that I had used(whoops).
I never ran the 8 buggy, but I have been very happy with the 8 truggy - it is pretty tough and handles very neutral.
I have a Quark 125 that is over a year old and has never thermalled. It is heat sinked to the chassis on my g-maxx and runs 4s with a 1515/1y motor - the motor and controller have never exceeded 150 degrees even under continuous use in summer heat. It does seem as though some folks have thermal troubles with the Quark, but I have had excellent results with mine.

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.

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?

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.

Aangel,

Where are you located????

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

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.

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

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.

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.

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?

I do not have an eagle tree system. I don't think that my 9XL is running fast enough to think that it is mislabeled. It's not as fast as my 8XL.

Believe me, this 1512 is mild. Really mild. Geared 14/46, I can pick the truck up off of the ground and it's barely ballooning the tires. I don't know what's up. I did run it on 5S for a couple of minutes and then I was performance similar to that of the 9XL on 4S.

Could it be that I got a bad motor? If I did, how would I tell. I mean, it's a motor. Either it's running or it isn't, right?

Weird.

The only thing that i can think of is the the Neu motors KV is unloaded or you have a mislabeled; like i said; a 1509 2600kv on 4S is quite a powerhouse. and i had several different feigao/wanderer winds.

I'm thinking that I may have inadvertently gotten the 1400kv model. The 2Y, I believe it is.

I am disappointed in the performance, but it is smooth and runs cool. I'm going to give it a chance in a race and see how it does in a crowd. I just need an appropriate controller. Perhaps, I should just try to gear it up. The prospect of sending it back to Neu to have it checked out is very unappealing to me right now. Maybe all of this luck I've been having lately is just fate trying to tell me something.

Gearing up will help, but go too far and your ESC will start complaining...

Yeah, that's what worries me. I suppose I'll just have to send this motor off to Neu and let them check it out. In the mean time, I'm going to hunt around for a Lehner.