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Old 04-21-2019, 12:53 PM   #1
dkrause
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Default ISO Aftermarket Axles for 240

We have problems with the hub flanges cracking and breaking on the stock rear axles of our road racing 240, Has anyone had custom axles built by Moser, Dutchman etc.? Looking for recommendations.

I cannot consider an complete rear end change out at this time.

Last edited by dkrause; 04-21-2019 at 10:15 PM..
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Old 04-21-2019, 04:54 PM   #2
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bakaxle.se
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Old 04-21-2019, 05:04 PM   #3
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bakaxel.se
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Old 04-24-2019, 09:03 AM   #4
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Karpiola from Finland.
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Old 04-24-2019, 01:53 PM   #5
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Originally Posted by dkrause View Post
We have problems with the hub flanges cracking and breaking on the stock rear axles of our road racing 240, Has anyone had custom axles built by Moser, Dutchman etc.? Looking for recommendations.

I cannot consider an complete rear end change out at this time.
Something seems odd, that is a pretty unusual failure for these. Are you having somebody body rubbing interference?
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Old 04-25-2019, 12:40 PM   #6
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We have no rub issues, but we have had 1 catastrophic failure and 2 more with cracks identified by dye pen testing that I do annually after the major failure. We race about 5000 miles a year, it is defiantly a fatigue failure.

I have also reached out to the Vintage Volvo racing community and was told YES this is a common problem.

I am working with an USA axle vendor now and we should have a solution shortly, I will post details once it is verified.
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Old 04-25-2019, 01:28 PM   #7
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We have no rub issues, but we have had 1 catastrophic failure and 2 more with cracks identified by dye pen testing that I do annually after the major failure. We race about 5000 miles a year, it is defiantly a fatigue failure.
I tried to find the video of the catastrophic failure to post here, but I can't find it outside of facebook.

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Old 04-25-2019, 03:28 PM   #8
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Originally Posted by dkrause View Post
We have no rub issues, but we have had 1 catastrophic failure and 2 more with cracks identified by dye pen testing that I do annually after the major failure. We race about 5000 miles a year, it is defiantly a fatigue failure.

I have also reached out to the Vintage Volvo racing community and was told YES this is a common problem.

I am working with an USA axle vendor now and we should have a solution shortly, I will post details once it is verified.
Interesting, I have never heard of that before. I suppose I could start offering new replacements.
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Old 04-25-2019, 03:38 PM   #9
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Sounds like you could benefit from converting to a full floating axle conversion
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Old 04-25-2019, 04:48 PM   #10
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Moser Engineering is in my town in Indiana and my cousin's son works for their drag racing team. You want me to check?
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Old 04-25-2019, 08:33 PM   #11
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lummert ; I have been in contact with Moser and they actually have done some axles for a friend who races a 142, thanks for the offer, but I am good now,

blkaplan ; Yes a full float is the optimum way to go, I do plan to do a conversion to another axle housing next winter.
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Old 04-25-2019, 08:36 PM   #12
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I tried to find the video of the catastrophic failure to post here, but I can't find it outside of facebook.

Jordan
That's all I have too, I will ask the driver of the follow car if he can send a copy. Thanks
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Old 04-25-2019, 08:37 PM   #13
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Interesting, I have never heard of that before. I suppose I could start offering new replacements.
It might be an opportunity.
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Old 04-26-2019, 02:53 PM   #14
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It might be an opportunity.
Yea, I wish there were more hours in the day!!!
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Old 05-02-2019, 05:46 PM   #15
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You know I'm going to ask it, but: if you do, please consider offering them with 48t ABS tone rings. 8)
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Old 05-02-2019, 08:09 PM   #16
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You know I'm going to ask it, but: if you do, please consider offering them with 48t ABS tone rings. 8)
That is part of the differential.

Have you tried a set of cryogenically hardened axles? That may be an affordable option to try. I've used rotors with this treatment and they lasted longer than any rotors I've ever used.
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Old 05-03-2019, 12:30 PM   #17
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You know I'm going to ask it, but: if you do, please consider offering them with 48t ABS tone rings. 8)
From your experience where would be the best place to have the rings/
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Old 05-04-2019, 04:14 PM   #18
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From your experience where would be the best place to have the rings/
Our conversion discarded the parking brake and fit the reluctor ring over the machined section of axle that normally passes between the shoes.

This is obviously not OK for any vehicle that wants to retain the stock parking brake. We looked at a few other options, e.g. cutting notches in the outside of the parking brake drum, cutting a hole in the axle tube & welding in a bung, etc. but none of them was simpler than this.

I was being a bit facetious; TBH I think that if there's a market for this, having rings available as an add-on and making sure that they will sit in a sensible place is all that's required. I'd be happy to share more detail shots if that'd be any use.

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That is part of the differential.
Not if you want to convert to 4-channel ABS. 8)
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Old 05-04-2019, 09:18 PM   #19
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Ok what about mounting a sensor from the inside of the brake backing plate? Then you could machine the inner part of the rotor to have the trigger teeth. Rotor and sensor are easily replaced if damaged and you can keep the ebrake. A VR sensor like the LH2.4 diff sensor or engine speed sensor might work?
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Old 05-04-2019, 09:48 PM   #20
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Quote:
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Ok what about mounting a sensor from the inside of the brake backing plate? Then you could machine the inner part of the rotor to have the trigger teeth. Rotor and sensor are easily replaced if damaged and you can keep the ebrake. A VR sensor like the LH2.4 diff sensor or engine speed sensor might work?
Find/make slotted rotors with 48 slots?
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Old 05-05-2019, 02:03 PM   #21
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I would think it is gonna be the make part of the statement. Rotors are cheap and you could just slot the rotor with 48 slots so you get better braking and needed sensing. Then replace the rotor when worn down.
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Old 05-05-2019, 02:11 PM   #22
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I would think it is gonna be the make part of the statement. Rotors are cheap and you could just slot the rotor with 48 slots so you get better braking and needed sensing. Then replace the rotor when worn down.
I looked at the stoptech slotted rotor pictures at summit (i know it is a generic photo of a 4 bolt rotor) and there are 6 slots but interestingly it appears there are 7-8 cooling vanes between each slot. 6x8=48. There may very well be 48 cooling slots in the rotor.
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Old 06-30-2019, 06:54 PM   #23
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I talked to Dana Yesterday at the races. In case he doesn't come back to update.

He sent axles to Dutchmen in Idaho. They have replicated them and he is now running them.

They now have them on file and can produce them at any time.

I believe he said price was $750USD for 3 axles. This included bearings. He said he had to get back to them because something didn't quite fit with the backing plate.

He said an even STRONGER version could be made, but he just went with the standard.

Jordan
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Old 07-01-2019, 08:12 PM   #24
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how do they measure the strength of these? what twisting force breaks the originals versus the upgraded? are they a bigger diameter?
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Old 07-02-2019, 10:43 AM   #25
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how do they measure the strength of these? what twisting force breaks the originals versus the upgraded? are they a bigger diameter?
From Dutchman:

Features:
-Forged alloy 1541-H material [25% stronger than stock 1039 material]
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