Is there a Quark 125B thermal problem? - Page 2 - RC-Monster Forums

zeropointbug · 11.29.2006, 01:46 PM

Hey BrianG, what if you were to use a copper spacer in the esc instead of aluminum? Also, you could even cut out the bottom of the case and stick a nice heatsink right out the case and directly on the FETs. It would be a little risky though.

BrianG · 11.29.2006, 02:07 PM

A copper plate would conduct the heat better/faster, but really, Al works well enough once it is installed with less thermal resistance. The copper slab or cutting the case would work [b]better[/i], but I have had great results just doing what I did alone.

zeropointbug · 11.29.2006, 02:41 PM

Well, you know what, i think i just might do this. Where do you start then disassembly then? Do you have a unsolder the motor tabs then?
You can just give a quick brief, i can take care of the rest...

BTW, don't you love how smooth the quark is?! It's so juicy.

coolhandcountry · 11.29.2006, 05:57 PM

I am currently running a 1512 2.5d neu on it. It is currently run with 4s lipo.
Yes I have trid 6s limn on it. It had a bad start up. After I got it going it was
ok. It was like had to warm esc up or wear batts down a little. When I say
start up. I mean like first hook batteris up and try to go. Not stop and go.
I tried 6s with a 1930 10t and it poof fried esc and motor. I have ran a 9xl on
it as well. I tried a xl 1200 basic. I have tried a 12xl as well. All the motors had
same issue with 6s. I went back to 4s and have had no issues what so ever.
I do get about 45 to 60 mins of run time on 8000 mah maxxamps pack. :D

neweuser · 11.29.2006, 06:53 PM

Hey, that is pretty good run times CHC. I'm wondering what run times I'll be getting with my Neu 1515 1/y?

zeropointbug · 11.29.2006, 07:00 PM

How i want a Neu motor... next year i'll get one, hopefully i'll have ran my 7XL before then. It's pretty snowy here now so, i'll see if i can seal up all the electronics and put my ProLine paddles on. ;)

Ya, that is very good runtime.

BrianG · 11.29.2006, 07:09 PM

Quote:

Originally Posted by neweuser

Hey, that is pretty good run times CHC. I'm wondering what run times I'll be getting with my Neu 1515 1/y?

CHC's motor is only 2000kv for about an L size motor, which is not a very "hot" motor. The 1515 1y is a larger can and higher kv (2200), so I'd say between 25 and 35 minutes depending on driving style, weight, etc.

zeropointbug · 11.29.2006, 07:22 PM

Can you guys give an estimate what my runtime will be with the C-7XL, with the Quark125B and A123 pack of 5s2p of 16.5volts and 4.6Ah. It's a sort of buggy-truggy ;) ... it's high of the ground, but has 1/8 buggy tires (Badlands). The weight fully loaded will be around 7.5lbs.
Oh, and thats geared to go about 50mph

Any guesses? I am thinking around 15 -20max minutes?

jhautz · 11.29.2006, 10:20 PM

Quote:

Originally Posted by BrianG

CHC's motor is only 2000kv for about an L size motor, which is not a very "hot" motor. The 1515 1y is a larger can and higher kv (2200), so I'd say between 25 and 35 minutes depending on driving style, weight, etc.

The 1512 is definitly a bigger motor than the L can motrs. Much more powerfull also.

zeropointbug · 11.29.2006, 10:30 PM

So, what do mean by that jhautz?

jhautz · 11.29.2006, 10:40 PM

Quote:

Originally Posted by zeropointbug

So, what do mean by that jhautz?

Just wanted to point out that the 1512 is a larger motor than the L can Feigaos is all.

Bigger diameter and it puts out more power than a Feiago L ever would.

02:12 AM

You should really use the Arctic Alumina from Arctic Silver to bond the aluminum slab to the FETs. "Arctic Alumina Adhesive is a pure electrical
insulator, neither electrically conductive nor capacitive." here is a link http://www.arcticsilver.com/arctic_a...l_adhesive.htm . When I did mine I could not find it locally anywhere so I had to order it online. PC shops online are the best place to get this stuff. It is good stuff, but it's a perment bond!

I only bonded the outside FETs to the slab and case and did nothing on the aluminum slab that is sandwiched between the boards.

Your pretty brave doing this on a brand new controller! :027: but it does make a difference especially for bigger vehicles. It seems to cool quicker and overall more efficiently.

zeropointbug · 12.01.2006, 02:25 AM

Hey, just to add, it appears once i took a closer look, that the slab attached to the case is only touching on the edges, it's not even touching in the middle...

Yes i was planning on using Alumina.

Do you think this mod is necessary for a 1/8 emaxx buggy? It will weight in at about 7.5 lbs. What do you think?

12.01.2006, 03:35 AM

hello zerpointbug,

may i ask you, are you try setup your esc the Drag Brake function yet?
it's at menu Table 3.2-3 and Table 3.3-2 , would you feel free to test it
and try power off then power on, the function will off , if you set ON before.

i have 5 esc 2 new(3color wire), 3 old(white color wire), 2new esc can't store memory (just Drag Brake) , 3 old esc is normal.

i want compare your esc with me.

Thank you..

neweuser · 12.01.2006, 10:30 AM

Quote:

Originally Posted by andywpj

hello zerpointbug,

may i ask you, are you try setup your esc the Drag Brake function yet?
it's at menu Table 3.2-3 and Table 3.3-2 , would you feel free to test it
and try power off then power on, the function will off , if you set ON before.

i have 5 esc 2 new(3color wire), 3 old(white color wire), 2new esc can't store memory (just Drag Brake) , 3 old esc is normal.

i want compare your esc with me.

Thank you..

How did you get 5 of them! WOW! Do you live in Thailand by any chance? LOL