Lightning Stadium Pro - R conversion questions

[SunnyHouTX]

Hey there guys,

I've just dipped into this conversion with the following:

*Feigao 7XL geared 14/49 (Mod1) with L size clamp/heatsink and fan
*Hyperion 5S 5350mAH (plugged into newer MM at about 20.76V)
*MM ESC with fan (while I wait or my MMM from RC-Monster)
*CC BEC
*MG995 servos
*Mechanical brakes with brakes on MM set at 10% and no drag brakes
*MM set at 50% punch control, lowest motor timing, 16.5V LVC and high start power

Here's the data from a couple of runs:



After about another 10 or so quick full throttle passes, motor temps were about 130*F - 140*F, ESC at 115*F and Lipo was under 100*F.

Ambients were around 90*F last night when I ran.

I think that this is a good set-up till the MMM gets here because the current was decent. What do you guys think? Should I be worried about something?

Thanks for any and all input.

Edit: changed the motor from 6XL to 7XL because that's what's in there. My E-Maxx has the 6XL

[jzemaxx]

You planning on doing speed runs with it or bashing?

[SunnyHouTX]

Hey jzemaxx, not to worry man, I am not after your record with this one

It's a basher for right now. It's plenty fast as it is. What do you think?

[jzemaxx]

Originally Posted by SunnyHouTX

Hey jzemaxx, not to worry man, I am not after your record with this one

It's a basher for right now. It's plenty fast as it is. What do you think?

lol, is it a MT?? I thought it was a truggy? I was just asking cause those are some serious amps that motor is drawing through that MM. For bashing I don't know how that gearing will play out. Also those motor temps are pretty warm for just some small burst passes....but it is a 6XL. I ran the 6XL's in a twin config......ran WAY to hot.

[SunnyHouTX]

Yah, it's a truggy, but it will be bunched in with the MT's at WFRCCC.

I made a mistake, it's got a 7XL and not a 6XL. The 6XL is in my E-Maxx. I still need to put some thermal paste between the motor and heat sink. So far, I am happy with how it ran as I tend to worry when motor tends go above 160*F. I'll be taking it out again today to a huge parking lot and a soccer field to check it out more. I might go to a bigger spur after I dremel the chassis for it.

[jzemaxx]

Originally Posted by SunnyHouTX

Yah, it's a truggy, but it will be bunched in with the MT's at WFRCCC.

I made a mistake, it's got a 7XL and not a 6XL. The 6XL is in my E-Maxx. I still need to put some thermal paste between the motor and heat sink. So far, I am happy with how it ran as I tend to worry when motor tends go above 160*F. I'll be taking it out again today to a huge parking lot and a soccer field to check it out more. I might go to a bigger spur after I dremel the chassis for it.

Ahh, guess they are just going to stick with the tire diameter rule and that is all.

A 7XL is much nicer then the 6XL. As long as the temps keep in check after some sustained runs I wouldn't worry one bit. My 6XL's would quickly climb to 190+

[SunnyHouTX]

That's a little much, no?

Thanks. I will know more later tonight.

[SunnyHouTX]

Here's some pics I took after putting thermal past on the heat sink.







And with new shoes and rear wing dyed black:

You should worry about the heat on the motor. When I had mashers 40 series on that truck, it hit 150 degrees after about 5 speed passes. I was using a 1515 2y with a fan on it. Also, the lvc was kickin in on the 5th pass. When I switched to buggy foams, I was able to do 20 speed passes before the lvc kicked in and the truck was geared higher. The motor was warm to the touch and I did not have a fan on it. The more weight your tire is, the more amps you will pull compared to a ligher tire.

[SunnyHouTX]

Hey there Blunten!

Yup, agree with everything you say. Nothing new there. I've geared it for about 40mph for bashing and everything seems fine. Motor holds steady at about 140*F and ESC at about 130*F.

I have changed back to the steel diff gear and the ratio now is 16/50.

BTW, I took out the mechanical brakes because the messy wiring was driving me nuts. So looks won over great brake feel:

Well, it does look like you have more space on the truck now :)