H-R power axle MOA build/slingshot chassis

[Rokpile]

did my first moa build, and it went pretty smooth. now i just need to get it on the rocks. but no, it had to snow today :-( so I'll get it on the rocks mid week. here's a list of what i had to work with

H-R power axles
DNA slingshot chassis
losi crawler shocks
jr 8711 steering servo
tekin fx-r speed control
tekin 45t motors
mayhem double phattys
panther tires
spektrum dx3r
lipo powered

along with this build i used ckrc high steer knuckles, ckrc 4-link set for the H-R axles and Fubar lockouts.


built the electronics on a removable tray by just unplugging the motors and steering servo. dig switches,rx and speed control are one unit like a circuit board.

notice how it all sits below the top of the chassis for low c.o.g.

here are some flex shots and a final shot with the new lid, looking forward to the comments and advice. thanx rokpile


here it is with my mini gc2 mrc

[finishline]

rigs look great

[jeeper_05]

Originally Posted by Rokpile

here it is with my mini gc2 mrc

Truck looks sick man, but that isnt a mini GC2, for one, the skid and chassis plates are not GC2, and the lower links on my GC2 are delrin...seems as everyone is doing the "little bro" theme, im digging your paintjob!!

[53 willys]

Nice set up. What kinda body post are those?

[Rokpile]

Originally Posted by jeeper_05

Truck looks sick man, but that isnt a mini GC2, for one, the skid and chassis plates are not GC2, and the lower links on my GC2 are delrin...seems as everyone is doing the "little bro" theme, im digging your paintjob!!

my bad, here is an updated picture. that was a photo op while i was finishing my mini sorry about that. way to keep me honest though

[Rokpile]

Originally Posted by 53 willys

Nice set up. What kinda body post are those?

axial body post on both rigs, if you notice the new pic of the mini you can see em installed

[53 willys]

Originally Posted by Rokpile

these are not Axial body post's are they? I want to know about the body post in this pic???
thanks

[whoodie]

Looks good, same setup I am running.

Little tip for you, run your rear uppers in the upper chassis hole, it gets your anti-squat more correct.

What center clearance are you running?

[Rokpile]

Originally Posted by 53 willys

these are not Axial body post's are they? I want to know about the body post in this pic???
thanks

yep, they are the stock body post off my axial. i just took a razor blade and notched out the center,drilled a hole slid them over my chassis and used a short 3mm bolt. also used the stock body stop and pins as well.

[Rokpile]

Originally Posted by whoodie

Looks good, same setup I am running.

Little tip for you, run your rear uppers in the upper chassis hole, it gets your anti-squat more correct.

What center clearance are you running?

thanks for the advice i appreciate it a lot. i'm making new rear upper links tonight to help roll my rear end a little more and get that extra 1/4" to legal max length. and i will raise em and try it. have you found an upgrade for axles, i tested mine and had to tight of turn radius set and snapped one. looking for something stronger if anyone can help. thanks

[whoodie]

Originally Posted by Rokpile

...have you found an upgrade for axles...

Yeah, Berg inners

You need to do some cutting and grinding to make them work. They are much much stronger then the HR inners.

[RC Shocker]

Originally Posted by whoodie

Yeah, Berg inners

You need to do some cutting and grinding to make them work.

In what fashion? Is there a link to that modification?

I am following this thread closely, very interested to know how to strengthen the Hot axles.

[whoodie]

Originally Posted by RC Shocker

In what fashion? Is there a link to that modification?

I am following this thread closely, very interested to know how to strengthen the Hot axles.

I have not seen a walk through of the mod, but I can tell you that the inner axles are identical, EXCEPT for the length. You will need to shorten the Berg inners to the the same length as the HR. After you do that you will need to regrind the flats onto the inner since you cut them off to shorten the shaft. Make any sense?

[Rokpile]

Originally Posted by RC Shocker

In what fashion? Is there a link to that modification?

I am following this thread closely, very interested to know how to strengthen the Hot axles.

great question, i was just on my way back here to ask that same question.
i was in the vendors section asking for updates on the cvd's.

[RC Shocker]

Originally Posted by whoodie

I can tell you that the inner axles are identical, EXCEPT for the length. You will need to shorten the Berg inners to the the same length as the HR. After you do that you will need to regrind the flats onto the inner since you cut them off to shorten the shaft. Make any sense?

Yes, that does make sense. And it also sounds somewhat simply.

Is it safe to assume that the inner axles can be left just a hair longer than factory length to possibly eliminate the need for o-rings in the stub's?

And I thank you for the help sir.

**************

I appreciate you letting me jump in your thread and ask a few questions Rokpile.

Great looking rig by the way.

I really like the steering/knuckle configuration and 4-link setup.

Did you get any crawl time w/ 3-link, and then changing over to 4-link? Any noticeable difference?

[whoodie]

Originally Posted by RC Shocker

Yes, that does make sense. And it also sounds somewhat simply.

Is it safe to assume that the inner axles can be left just a hair longer than factory length to possibly eliminate the need for o-rings in the stub's?

And I thank you for the help sir.

**************

I appreciate you letting me jump in your thread and ask a few questions Rokpile.

Great looking rig by the way.

I really like the steering/knuckle configuration and 4-link setup.

Did you get any crawl time w/ 3-link, and then changing over to 4-link? Any noticeable difference?

I don't know if it is safe to say that. I made my inners 1mm longer then the HR inners because I am running CKRC max steer high clearance knuckles. They move the stub shaft out 1.5mm. So what I do is take 2 of the Traxxas 1985 .5mm shims and put them on the inner axle, then the bearing. If I were you I would measure everything and see what you come up with. If you don't already, now is a perfect time to buy a pair of digital calipers.

[Rokpile]

you have a lot of great advice. is your build posted? i would like to check it out, and i will definately check out the berg solution asap

[Rokpile]

Did you get any crawl time w/ 3-link, and then changing over to 4-link? Any noticeable difference?
[/quote]

no crawl time with the three link, due to not having any luck with it in the past.

[Rokpile]

Originally Posted by whoodie

I don't know if it is safe to say that. I made my inners 1mm longer then the HR inners because I am running CKRC max steer high clearance knuckles. They move the stub shaft out 1.5mm. So what I do is take 2 of the Traxxas 1985 .5mm shims and put them on the inner axle, then the bearing. If I were you I would measure everything and see what you come up with. If you don't already, now is a perfect time to buy a pair of digital calipers.

it looks like i need to build a bump stop setup on my same steering set due to the fact they cam over and i don't want my servo end points to hold that kind of mass on the rocks so check back in a while, i think i have it figured out in my head just got to get around to doing it.

[whoodie]

Originally Posted by Rokpile

...is your build posted?...

No, I never got around to taking any pictures. Plus, I've got a few neat tricks that I'd like to keep my own for now

Feel free to ask any questions though.