8ight T conversion

bdebde, the battery placement has always been a concern for me, with regard to its effect on the way that the vehicle flies over the jumps. Oddly enough, the 8ight almost seems like someone was thinking, "hey, we should design this to work with a single pack instead of two." If you look at the chassis from the top, you can see that the center diff is crammed to the right side of the truck/buggy. There is barely room for the motor. Well, maybe not barely, but it's not as roomy on the right as it is with most setups. Consequently, this give you lots of room to bring the battery closer in line with the center line of the chassis.

I was doing one of those, "let's see how it runs" tests last night; and I was jumping our triple without regard for setting up for the following turn. I was aiming for maximum air, to see how the truck behaved. I was getting a good 8' off of the round, maybe more. It was very stable and flat in the air. If I hit the jump anywhere near straight, the truck would land on at least two tires every time. When taking jumps in a manner that minimizes the time that you spend not accelerating, you'd swear that the balance was 50/50 left to right. In short, it's perfect. In fact, I really don't know how you would put two packs on the 8ight, without having one hanging over the side of the mud guard on the right side, completely screwing up the balance.

[bdebde]

Yeah, I noticed how far over to the right the center diff was. Also hoping (as you confirmed), to be able to get good balance with the larger batteries. I don't like anything over 5000mah in the buggy because it gets too heavy on one side. Looks like the 8ight T is gonna be next on my list. CR$P, may have to sell one.

[supralover72]

Hmm, I would not say X-ray. It's Losi, plain and simple: Good ideas with not the best quality to go into it.

But the thing that got me was when you said you bent a chassis. I reccommend then installing the motor mount as it seems the middle is taking all the force with the F and R chassis braced forcing it there.

[jnev]

Awesome conversion AAngel!! Really nice. I am surprised that the extra caps made such a big difference... but its great that the temps are staying so low for you.

[BrianG]

I think he deserves a little bit of good luck for a while considering his history lately. :)

Brian, thanks for the words of encouragement.

I think that I did just tweak my chassis. It's odd in that it still tracks straight. I haven't had to adjust anything to compensate. Maybe someone else out there with an 8ight can put a straight edge to theirs and see if the center is bowed up a tiny bit.

As for my comparison of the 8ight T to the XB8, I meant it. To me, the XB8 is the easiest driving buggy out there. I had plenty of experience with the 8ight buggy, and the truggy doesn't drive anything like it. Icouldn't drive the buggy to save my life, but I love the truck.

If I did tweak the chassis on that jump, I'm not to worried about it. The motor mount is fine. Nothing moved. Didn't strip any gears or anything. Besides, I'm not the first to have bent a chassis on that jump. To be honest, it's just plain stupid. The guy that was working the jump, when the track was reconfigured, had it in his head that he wanted BIG air going over it. The problem is that with the way it is angled, there isn't much room for error.

[jollyjumper]

hey,
just wanna tell you that there is a big problem with rear outher hinge pins.


also, this may not be a nice thing to say about losi
( i do still love losi aswell) but,
quality is nowhere near xray.
i have two t2'007 to compare 3 different losi too, the losi's are all not as nice.
( 1 XXX-T MF 2, 1 XXX-4 G+, 1 8IGHT-TRUGGY)

remember that this is my opinion. thank you.

After I made the comment, I knew that I shouldn't have. All I was saying was that, to me, the 8ight truck is as pleasant to drive as an X-Ray buggy.

I don't know what you call a big problem, but I did bend one, and I had to knock the heck out of it to bend it. Even still, the truck continued to run and replacing it was no big deal. Besides, I would have much rathered bend the hingepin that break an arm, or worse. If the hingepin is the weak link, then so be it. When you smack something, something has to give.

Is anyone out there running an 8ight T or similar truck with a 9XL/MM combo on 5S lipo? If so, can you let me know what gearing you are running? I put some pretty big tires on my 8ight T for bashing and would like an idea of a good starting point for the gearing. I don't want to fry my MM AGAIN, until I get my Quark back from S&T.

[jollyjumper]

i see your point about the driving.
i'm more about the mechanic aspect then the driving.
i kinda bought the 8-t because mike was building one for himself and he will sell all the needed parts in the store.
on the xray i will try to do as much as possible myself.
dont have a mill tough but i'm sure i can find someone who does have one.


lots of people bend hinge pins on the 8-t.
there are new harder one's from losi but those just snap.
the new one's are grey.
but yeah, better a pin then an arm or something.

OK guys, I need some help. I went out to the track today. My setup was a 9XL with the Mamba Max on 4S lipo geared 16/46 with the stock Losi truggy tires. After 30 minutes of running, the esc was at 115*F and the motor was at 190*F.

I just don't know what's up. I don't think I'm undergeared. Any body have any advise? Maybe I should go back to the 8XL, because the 16T pinion is the largest that I have.

[IBJAMMIN]

Sounds like it's overgeared drop a tooth on the pinion.?

[supralover72]

Yea, if it was undergeared, everything would be hot, over just the motor. That's how I learned it.

[Patrick]

If the losi tires are 5.7'' diametre then your geared for high 30's maybe 40mph aren't you? So I would gues overgeared slightly, for racing. 30 minutes is a long time to be on the track, if you were driving hard the whole time, especially for a feigao.
Was it not very fast, if you say you might go back to the 8xl.

[RC-Monster Mike]

I don't think anything is wrong, Anthony. Actually, I am surprised the Feigao could hold out for 30 minutes in race conditions without going over 200 degrees(I have de-magnatized Feigaos in less time on the track). I would say your set up about as good as you can be with a Feigao motor.