GPM CVD’s triple failure

[KevinC]

Hey Arrma Nation.

I ran the GPM beefy CVD’s for the first time today on the K8S. Three of the drive pins broke off. Crazy right? Was I jumping, yes....., but no phuckery, just straight lovely airs landing on all fours and not one tumble, no power on landings or brake landings.
I believe that the 7mm shafts allow way LESS torsion than the stock shafts do, hence transferring more twisting moment to the drive pins which remain the stock size. If the drive pins were 5mm and M2C made outdrives that accept them, that would be awesome.

Anyhow, just a caveat for guys trying these shafts out. I don’t lay blame on GPM. They’ve created a decent shaft but had to comply with outdrive limits.

 

[Surchaufeur]

The pins are replaceable

 

[KevinC]

The pins are replaceable

That’s all good but I think you’ve completely missed the point of this post dude.

 

[gotnitro]

Hey Arrma Nation.

I ran the GPM beefy CVD’s for the first time today on the K8S. Three of the drive pins broke off. Crazy right? Was I jumping, yes....., but no phuckery, just straight lovely airs landing on all fours and not one tumble, no power on landings or brake landings.
I believe that the 7mm shafts allow way LESS torsion than the stock shafts do, hence transferring more twisting moment to the drive pins which remain the stock size. If the drive pins were 5mm and M2C made outdrives that accept them, that would be awesome.

Anyhow, just a caveat for guys trying these shafts out. I don’t lay blame on GPM. They’ve created a decent shaft but had to comply with outdrive limits.

I would 100% blame that problem on GPM.. The pins were probably not heat treated properly.

 

[KevinC]

I would 100% blame that problem on GPM.. The pins were probably not heat treated properly.

Mmmm....that never crossed my mind.
Im going to contact them today, see what they say.

 

[Niz55]

They will tell you thank you for the feedback and we will notify the factory . Lol

5mm pins won't make a difference.

 

[gotnitro]

They will tell you thank you for the feedback and we will notify the factory . Lol

5mm pins won't make a difference.

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Looks like brittle A$$ metal OR just plain weak.

 

[KevinC]

Ya, maybe they are just plain junk. Live and learn.

cheers,
kev

 

[Order66]

Thanks, @KevinC
I remember seeing the thread a while back about checking these out and almost sprung for a set when I bent mine out on the sand dunes, but you’ve just saved me the trouble!

 

[lbenton]

Seems like they do not use the highest grade of steel in their parts maybe?

 

[aametzger]

Yea i bend and break the stock ones on the regular. I REALLY wish someone would make quality replacements for the cvd's. even if they were double the price of the stock replacements it would still be cheaper than my current cvd replacement budget at $20 a pop.

 

[Order66]

@aametzger I agree, you only feel the pain once when you pay for quality. Too bad there’s no worthwhile upgrade yet, I’d be happy to pay the bucks

 

[Hammer Down]

It sure would be nice if M2C, Scorched, JBI or SOMEBODY! made some upgraded ones.

 

[LibertyMKiii]

I have always wondered why these parts are made with hardened steel? It seems to me a steel made to take hard hits and bounce back would be ideal. For example spring steel or 4340 chromoly is also good.

 

[KevinC]

Hopefully shafts are on the M2C Radar. Mitch would prolly sell a schit ton of these. Maybe @Rich Duperbash or @RC DUDE81 can chime in here.

cheers,
kev

 

[Niz55]

Some one is making them already on facebook. Titanium ones.

 

[k3n]

What’s the name?
Just got mines in too. Hope they hold up. If not back to hammering the stock ones

 

[RC DUDE81]

Hopefully shafts are on the M2C Radar. Mitch would prolly sell a schit ton of these. Maybe @Rich Duperbash or @RC DUDE81 can chime in here.

cheers,
kev

They are definitely on the to do list with M2C. ? The shafts on the 8s are def. a weak point especially when running big power or heavy belted tires. M2C is currently working on 6s shafts and the 8s should be next!?

 

[bicketybam]

They are definitely on the to do list with M2C. ? The shafts on the 8s are def. a weak point especially when running big power or heavy belted tires. M2C is currently working on 6s shafts and the 8s should be next!?

I've bent a bunch of front CVD's on my Kraton EXB so far. I will definitely buy M2C upgraded ones! Glad they are working on the 6S ones ???

 

[Armarookie43]

They are definitely on the to do list with M2C. ? The shafts on the 8s are def. a weak point especially when running big power or heavy belted tires. M2C is currently working on 6s shafts and the 8s should be next!?

Can he also make some front steering links (I'm bending those) and the rear camber links that DON'T thread themselves in? ??