[ultimateracing335]

I was out on the track monday and broke another half shaft. Second in a month. They cant handle a 6sp manual launch. It's the weakest link on the drivetrain after the stock clutch.
Is there any upgraded ones out there???

[Alex@AKMotorwerk]

Originally Posted by ultimateracing335

I was out on the track monday and broke another half shaft. Second in a month. They cant handle a 6sp manual launch. It's the weakest link on the drivetrain after the stock clutch.
Is there any upgraded ones out there???

damn, sorry to hear man... i don't know of any upgraded ones out yet. what rpm are you launching at and what tires are you on?

[JoosyJoos]

I'm gonna bet you're launching at way too of an RPM seeing as how you're the only one whos had this problem. That being said, I wish you the best of luck and hopefully we can get some sponsors to alleviate this problem

[Alex@AKMotorwerk]

Originally Posted by JoosyJoos

I'm gonna bet you're launching at way too of an RPM seeing as how you're the only one whos had this problem. That being said, I wish you the best of luck and hopefully we can get some sponsors to alleviate this problem

he's def not the only one having this problem... i've heard of a few different people having the same problem. Not many, but more than just UltimateRacing335

[BALLAJL15]

I feel your pain. I broke 3 axles and just gave up using hoosier slicks. I no longer drag race the car unless its on street tires... and its no fun racing on street tire...

[335iheLLraiseR]

custom? anybody got a source?

[JoosyJoos]

Originally Posted by nj323ci

he's def not the only one having this problem... i've heard of a few different people having the same problem. Not many, but more than just UltimateRacing335

I stand corrected. My bad...

I'm sure someone will exploit the market for these eventually...

[BALLAJL15]

Originally Posted by JoosyJoos

I stand corrected. My bad...

I'm sure someone will exploit the market for these eventually...

Yeah I was told aftermarket axles would be roughly over $1k... pretty crazy. I really think if I had an LSD it wouldnt have broken the axles... Im sure any one who brakes them doesnt have LSD because all power goes to the driver side wheel and it breaks every time you hook.

[ultimateracing335]

Originally Posted by BALLAJL15

Yeah I was told aftermarket axles would be roughly over $1k... pretty crazy. I really think if I had an LSD it wouldnt have broken the axles... Im sure any one who brakes them doesnt have LSD because all power goes to the driver side wheel and it breaks every time you hook.

Hahahah I have a LSD. On slicks i went all day cause the tires give a bit. When i bought drag radials the hard side wall just makes it hook and the track has glue on it so your facked. The first axle was 4500RPM launch no feathering. The second axle was 3000RPM launch easing off the clutch. They cant handle 430 pounds of torque.

[ultimateracing335]

Originally Posted by BALLAJL15

I feel your pain. I broke 3 axles and just gave up using hoosier slicks. I no longer drag race the car unless its on street tires... and its no fun racing on street tire...

Im not drag racing until i get upgraded shafts. I went down the track with my INVO's and spun all the way through to 3rd. Still did a 13.6 at 112. Lucky winters coming so i have a chance to source some.

[Kevin@AKMotorwerk]

i was looking into the differences between the m3 and 335 shafts, although i never found out for sure if they are stronger or will fit, its something you may want to look into, prob harold at hp can figure it out for you

[Muffnbluff]

I don't think many cars are built with the expectation that they'll withstand a hard launch on drag radials with the car putting out almost 150% of the stock torque amount.

[inthemiddle]

just undo your CDV mod , burn up that upgraded clutch instead

[Zeph]

M3 was my first idea, but like mentioned above dunno if they are stronger or will fit. Even if they are stronger by how much? That car comes with less torque than ours so I wouldn't expect it to really be any stronger. Maybe lighter...

[ultimateracing335]

Originally Posted by Zeph

M3 was my first idea, but like mentioned above dunno if they are stronger or will fit. Even if they are stronger by how much? That car comes with less torque than ours so I wouldn't expect it to really be any stronger. Maybe lighter...

Our shafts are hollow and have a groove that is purposely weak, so it snaps there. I wonder if a lowered cars angle from diff to wheel has a role in extra stress on the shaft.

[Kevin@AKMotorwerk]

Originally Posted by ultimateracing335

Our shafts are hollow and have a groove that is purposely weak, so it snaps there. I wonder if a lowered cars angle from diff to wheel has a role in extra stress on the shaft.

the angle of lowering defintely puts stress on the actual joint, i dont think it puts stress on the shaft itself unless it jumps from the torque, where are your breaks occuring?

[Kevin@AKMotorwerk]

Originally Posted by ultimateracing335

Our shafts are hollow and have a groove that is purposely weak, so it snaps there. I wonder if a lowered cars angle from diff to wheel has a role in extra stress on the shaft.

if you have an old shaft, you should take it to a machine shop and see if they can make you one out of thick wall dom tubing, or solid, but i think solid would add way too much weight. i know machine shops can make axles for regular axles even cut splines if they had to, but the bmw ones have the bolted flange so its even easier

[ultimateracing335]

Originally Posted by sexye92

if you have an old shaft, you should take it to a machine shop and see if they can make you one out of thick wall dom tubing, or solid, but i think solid would add way too much weight. i know machine shops can make axles for regular axles even cut splines if they had to, but the bmw ones have the bolted flange so its even easier

I took the 1st one but the process they used to insert the shaft in the bearings make it difficult to get it out.

[GreenPlease]

Do a google search for "carbon fiber driveshafts" there is a company that does shafts for mustangs and other cars. I'm sure they could provide a solution. I'd do the search for you but I'm on my phone.

[Kevin@AKMotorwerk]

Originally Posted by ultimateracing335

I took the 1st one but the process they used to insert the shaft in the bearings make it difficult to get it out.

really? do you have pics? did you break the custom shaft too?

[Hunter399]

Ive borken one too, we really need an aftermarket company to come out with an upgrade for us.

[Zeph]

what is the best way to go?
forged: steel? aluminum?
carbon fiber, reinforced?

Like mentioned before I guess you would want an upgraded clutch too and probably before (or same time) upgrading the 1/2 axles. Then, of course, what is next