Kraton EXB arms vs RTR Side by side comparison

[Rcproponent]

Hey everyone, I said I’d post exb arms next to a set of the RTR arms, or in this case some RPM arms.

I have a bunch of photos here just figured I’d try and get as many angles as possible.

Note: the Lower shock pins require the EXB pins, the RTR will not fit.

The hinge pins on the rear arms are a little adjusted, so if you have a Mojave hybrid with kraton arms you’ll have more bite for proper droop. ????

Hope this clears some things up for some folks... I have a set of exb kraton shock towers coming as well, so I’ll post those when they come too, next to RTR shock towers.

 

[Dscracing1320]

I will say this. My RPM arms flex to much on my heavy m2c rigs with stiff spring setups and actually bend axles fairly often. The EXB arms are stiffer and allow the suspension to work as it should.

 

[Bigtim29]

Looks like the suspension pin hole is more inward on the exb arm. Does that mean the sub has mor ride height and suspension travel than the kraton.

 

[Dscracing1320]

Looks like the suspension pin hole is more inward on the exb arm. Does that mean the sub has mor ride height and suspension travel than the kraton.

No. The shocks angle is different. Height is the same.

 

[Rcproponent]

Towers are quite a bit different..

Will post pictures when I get my spare set in the mail.

 

[NOVA-RC]

Yeah. I found out the hard way that the EXB rear suspension is different here, lol

https://www.arrmaforum.com/threads/question-for-exb-v4-owners.26536/

 

[anthonyslwooko]

Dang so I’ve ha an RPM arm warp and had one crack before. But nothing like cracking up about 6 rear EXB arms. I’ve bashed the crap out of RPMs and they start warping where the droop screws ride. So my theory is that there is no bulletproof arm. There is only so much that they can take so my thoughts are take it down a notch and take down some of the high and mighty expectations for these toys and bash moderately and less so things will last. My thoughts about aluminum arms maybe they can be bashed during the winter where the snow will take all the impact away as a cushion for sends

 

[Dscracing1320]

Dang so I’ve ha an RPM arm warp and had one crack before. But nothing like cracking up about 6 rear EXB arms. I’ve bashed the crap out of RPMs and they start warping where the droop screws ride. So my theory is that there is no bulletproof arm. There is only so much that they can take so my thoughts are take it down a notch and take down some of the high and mighty expectations for these toys and bash moderately and less so things will last. My thoughts about aluminum arms maybe they can be bashed during the winter where the snow will take all the impact away as a cushion for sends

I had high hopes for the exb arms. I'm so disappointed with the droop screws. All have stripped and that leads to broken shocks and more

 

[Jluther@becoinc]

I had high hopes for the exb arms. I'm so disappointed with the droop screws. All have stripped and that leads to broken shocks and more

I had the same problem with my droop screws pushing through. I stacked a few lock washers between the bolt head and bottom of the arms and and it fixed it. Give it a try

 

[Lukas412]

Do the EXB arms work with the M2C shock towers?

 

[Rcproponent]

Do the EXB arms work with the M2C shock towers?

M2C now makes an EXB version shock tower ????

 

[Jluther@becoinc]

Do the EXB arms work with the M2C shock towers?

Yes the M2c towers fit great in all ways

 

[Dscracing1320]

I had the same problem with my droop screws pushing through. I stacked a few lock washers between the bolt head and bottom of the arms and and it fixed it. Give it a try

I basically did the same thing. I used some solid pistons actually gave me perfect droop

 

[LibertyMKiii]

Dang so I’ve ha an RPM arm warp and had one crack before. But nothing like cracking up about 6 rear EXB arms. I’ve bashed the crap out of RPMs and they start warping where the droop screws ride. So my theory is that there is no bulletproof arm. There is only so much that they can take so my thoughts are take it down a notch and take down some of the high and mighty expectations for these toys and bash moderately and less so things will last. My thoughts about aluminum arms maybe they can be bashed during the winter where the snow will take all the impact away as a cushion for sends

Are most of you breaks at the hinge pin on the EXB arms?
I wonder if you could take a piece of flat carbon and use some screws/nuts to attach it to the lower arms. Finding the right amount of flex via different thickness of the carbon would be the tricky part I suspect. If it is too stiff like 3mm carbon plate then it will just break the arm at the hinge pin.

 

[jondilly1974]

Are most of you breaks at the hinge pin on the EXB arms?
I wonder if you could take a piece of flat carbon and use some screws/nuts to attach it to the lower arms. Finding the right amount of flex via different thickness of the carbon would be the tricky part I suspect. If it is too stiff like 3mm carbon plate then it will just break the arm at the hinge pin.

My EXB arms broke at the pin as well. I don’t have as much time with mine as he does, but I’ve had my share of bad landings ?