| flm maxx chassis brace | carbon fiber | ofna cd | hacker c50 10xl | - Page 4 - RC-Monster Forums

ANGRY-ALIEN · 11.24.2009, 12:39 AM

Ok, got some time to make updates/changes on the build... The first problem I tackled was the ESC... The Quark 125B has a little issue with its thermal tape that
transfers heat from the FETs to a heat spreader and then on to the casing which 'should' help to keep things cool... Over time this tape will release itself from the
casing and therefore reducing the cooling effect... I found a couples threads with solutions for this problem. The mod/fix required me removing the circuit from the
casing, taking the old heat spreader off the FETs and replacing it with a thicker piece of aluminum and adhering it with some thermal epoxy. While the case was open,
I soldered two 35 volt, 1200uf capacitor the board in parallel (another popular mod for the 125Bs)

Above: old spreader and the new 'slab'

Above and below: new caps installed

Above: four 3.5mm gold plugs for the BEC and LVC to get power

Above: got my new heatsink from Mike and mounted two 40X10mm 5v fans on it

Above: new mount for heatsink and esc

Above: heatsink mount on the upper deck

More to come...

ANGRY-ALIEN · 11.24.2009, 01:46 AM

It continues...

I decided to rebuild the CD and make some improvements... I made the decision to discontinue the carbon fiber motor mount, not because it flexed, but because the resin
started to melt when the motor got a little hot... it was also very difficult to tighten the screws that held motor as the carbon would compress so much, they would get
loose again... as a result, I lost two pinions

... I also swapped out the metal spur for a nylon one. The CD now feels a lot more solid with the changes.

A few photos of the rebuild....

I did a small test after getting everything together and it seems to be working... The batts were not fully charged, so I'm not yet sure how well the fix worked.

suicideneil · 11.24.2009, 11:33 AM

That looks great, very nicely done. Is there much flex in the motor mount at all? I wouldnt imagine so seeing as its screwed to the diff braces at the top & bottom..

ANGRY-ALIEN · 11:56 AM

Hey Niel... thanks man... the previous setup had some flex actually which came from the CD mount and not the motor mount... I use new posts for the rebuild and it's quite rigid now.
I'll need to have good test run to see how everything holds up.

Popoxx · 11.24.2009, 05:04 PM

Outstanding job and E-maxx !

If there is motor flex again it won't be difficult for you to make an alu clamp mount screwed in the chassis and which goes around the motor ?

And be nice to the Gorillamaxx straps, mine held out 30'... But I'm a basher

ANGRY-ALIEN · 11.24.2009, 05:44 PM

Quote:

Originally Posted by Popoxx

Outstanding job and E-maxx !

If there is motor flex again it won't be difficult for you to make an alu clamp mount screwed in the chassis and which goes around the motor ?

And be nice to the Gorillamaxx straps, mine held out 30'... But I'm a basher

Thanks man... hmmm... yah, I'll have to work on a clamp/cradle solution for the motor pretty soon... for now, I'll stay away from situation that might put the mount under unnecessary stress (like big jumps

).

Krawlin · 11:07 PM

I am curious as to where you got the inspiration for this center diff setup.... As I have a very similar setup (minus the awesome carbon fiber work) in my Maxx. And I'm not trying to thread hijack here, just wondering if you got your idea for the center diff setup from my Maxx.

Anyway, here are some pictures and a vid from my build thread that I posted here on RCM and Traxxas a few months ago (not nearly as nice as yours, but the same setup basically) -

And a quick video of my setup -

Krawlin · 11:09 PM

Also, I noticed you were looking for some aluminum center diff mounts.... I use the Integy ones. I know most people here don't like hate Integy, but I have had no strength issues with their aluminum center diff mounts. These are meant for an OFNA Ultra LX One buggy, which has the same center diff as what you and I are using, so they do work just fine without any modifications.

Here is a link to where you can buy them -

http://www.integy.com/st_prod.html?p...34&p_catid=133
(Integy also has grey anodized ones if you don't like the silver)

_paralyzed_ · 11.24.2009, 11:08 PM

Alien- You've got a hell of a truck there. I love it. Need video!

Krawlin'- which member here did you get your idea from?

Krawlin · 11:17 PM

Quote:

Originally Posted by _paralyzed_

Krawlin'- which member here did you get your idea from?

From "jordan...", he has a similar setup on his G-Maxx, but uses Xray stuff instead. Alien probably got the idea from him too, I don't think alot of people saw my thread, I am just asking him out of curiosity.

This is "jordan..."'s setup, which I got my idea from -

ANGRY-ALIEN · 11.25.2009, 02:05 AM

Quote:

Originally Posted by Krawlin

Also, I noticed you were looking for some aluminum center diff mounts.... I use the Integy ones. I know most people here don't like hate Integy, but I have had no strength issues with their aluminum center diff mounts. These are meant for an OFNA Ultra LX One buggy, which has the same center diff as what you and I are using, so they do work just fine without any modifications.

Here is a link to where you can buy them -

http://www.integy.com/st_prod.html?p...34&p_catid=133
(Integy also has grey anodized ones if you don't like the silver)

I actually saw one of those just last week on ebay, but I resisted the temptation... I want to switch to a ofna spider diff which won't work with lx one mounts, so I got a jammin CD mount instead.

Quote:

Originally Posted by _paralyzed_

Alien- You've got a hell of a truck there. I love it. Need video!

Krawlin'- which member here did you get your idea from?

Hey man, thanks... I'll try for some action stills and vids this weekend.

Quote:

Originally Posted by Krawlin

From "jordan...", he has a similar setup on his G-Maxx, but uses Xray stuff instead. Alien probably got the idea from him too, I don't think alot of people saw my thread, I am just asking him out of curiosity.

This is "jordan..."'s setup, which I got my idea from

Yep

... Jordan's cd mount was the inspiration for mine.

_paralyzed_ · 11.25.2009, 01:14 PM

It was ssspconcepts that first got Mike to make a maxx cd mount and then I got mine. Damn these traxxas trucks. It's like we're compelled to make them worthy. I don't have a single traxxas part on my e-maxx anymore. So now it's good!

ANGRY-ALIEN · 11:50 PM

Quote:

Originally Posted by _paralyzed_

It was ssspconcepts that first got Mike to make a maxx cd mount and then I got mine. Damn these traxxas trucks. It's like we're compelled to make them worthy. I don't have a single traxxas part on my e-maxx anymore. So now it's good!

Yeah... i still love the maxx despite all the other option out there.... i think it's just the appeal of having so many options to customize the truck and make it 'your own' (even when inspired by other vehicles)... I wanted one of Mike's CDs, but it doesn't seem to be coming out for now, so I built my own.

ANGRY-ALIEN · 11.26.2009, 12:16 AM

Success!!!!

Did a test today and ESC did not disappoint... the truck pulled hard and didn't miss a beat... very little cogging (very very very little) on start ups...
the temps stayed pretty low too, 120s to 130 (are these temps really low?) on the ESC and 150s on the motor... the run was done with a 13t pinion and I am loving the acceleration. The heat spreader mod was well worth the effort.

Alien

pinkpanda3310 · 11.26.2009, 08:26 AM

Glad to hear about your success Alien but like paralyzed said, we need video

That thing looks awesome and I wanna see it in action. How much does it weigh fully loaded? And what lipo's are you using (can't remember if you said)?