Dog bones and shocks

[Gas Jocky]

My pal had a shock fail today, I don't think it's the trucks fault though, it's the fact that he drives it like he stole it! We managed to fix it in the field with a spare 5b front shock shaft. It's longer than the rampages so I added a rubber hose to the shaft and a couple washers on top of the piston to make it work and it performed just fine. Of coarse it's a temp fix till he can get new shafts. The one problem we both had today was dog bone pins coming out, one on my rear and one on his front almost at the same time. These trucks have been run only twice so far, about 6 tanks worth. I fixed mine with a spare 5b wheel hub pin but don't know how long before it comes out. Anybody else had this problem yet?

 

[RampageHopUps]

Thats the first bent shock shaft I've seen, but the 2nd or 3rd dogbone pin falling out.

 

[Gas Jocky]

Hey Rob how hard would the metal be on the dogbone, could you drill and tap it and put a grub screw in?

 

[RampageHopUps]

I'll try that tonight. It might be too hard though.

 

[RampageHopUps]

OK, you can drill and tap it, but its not easy. Getting the hole centered in hard material isn't easy. I can do it on my lathe, but not with a hand drill. You have to grind a flat spot first, then use a center drill, a tap drill, then the tap.

 

[MOfroggy]

Some vendor is working on better dog bones right?


Rob, do you think the factory will fix this problem sometime in the future?


MOfroggy

 

[RampageHopUps]

Yes, Phatdad is working on better Dogbones. MCD dogbones fit fine. I ahven't done enough research to see if MCD guys are breaking theirs under extreme power.


The Redcat factory has been aware of the pin problem for a few weeks now. They will have a fix for it. Same problem HPI had in the first weeks also. Just a matter of reaming the holes instead of drilling them.

 

[Kaz the Minotaur]

I wonder if coating the pin with super glue and then sliding it in the hole quickly will hold it in?

 

[RampageHopUps]

It would be better to use red or green loctite. Loctite 609 is preferred for this type of joint. The CA glue is not capable of withstanding a shear joint.

 

[Shiny]

Agree with Rob.


If you can drill them and use grab screw it will be munch better. Don’t forget the locktite on the screw.

 

[Clubin]

Has the pin issue been adressed or are you still having problems with the pins falling out?

 

[Gas Jocky]

Gas Jocky


Member Join Date: Jul 2008


Location: Gulf Islands B.C.


Posts: 80


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I tapped the pins out and lightly abrazed the pin with a dremel (or a file would work )then applied red lock tite and tapped back in place. They haven't budged since.

 

[hellya]

2 words JB Kwick http://www.jbweld.net/products/jbkwik.php


Comes from JB Weld company.....the Kwick bonds in 4 minutes

 

[badd_maxx25]

are these the dog bones for the wheels MCD002-2-ds-2 number is from rampage hopups

 

[Gas Jocky]

Yes those are the ones

 

[mooman007uk]

I tried tapping mine out but they seem to be in pretty tight cos they wont budge with what i'd deem a hard enough hit to move them. I've not had a chance to run more than 1/2 tank though so knowing my luck they'll all drop out when i get more run time...had another 6" snow last night


I just noticed on the picture of the mcd shafts the pins are out of phase!


I've run into phasing in the past whilst building full size lifted vehicles and having to make up driveshafts. Running out of phase will cause problems with cup and axle turning at different speeds, cup and pin is a simple carden joint which upon deflection runs in a eclipse and not a circle so it speeds up and slows down...both ends of the driveshaft should be running the same speed or your gonna get vibration and load up driveline parts. Maybe that's why alot of mcds seem to chew diffs and break axles...

 

[RampageHopUps]

If you have any green loctite, that will seep into the crevices and hold it in place forever.

 

[pipeous]

I busted punches, sockets, and such getting a couple out. put a drill bit through my thumb trying to drill the end and tap it. I found using screwdriver inserts (torx worked well) to punch them out. I put the dogbone on a socket... best to use a good socket as I shattered a 3/8 drive and 1/2 inch worked better, and clamp the other end... ya I had one fly across the shop as I was using a big arse hammer after the smaller one couldn't get them out... good old eastwing... like hellya, I use jb kwik

 

[Clubin]

Yes, moo, they are out of phase, that is the way it should be they won't bind that way.