Converting alloy wheels to split rims

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Converting alloy wheels to split rims

Post by roymck » Mon Aug 15, 2016 5:19 pm

Did somebody mention in passing on a thread that they thought about having some alloy rims machined to take split rims ?
Who was it?

I have a plan .



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Re: Converting alloy wheels to split rims

Post by scimjim » Mon Aug 15, 2016 5:23 pm

I'm in contact with a company who say they can do this - you normally have to go up a size or two, so 15x8 split Wolfies are my goal :-)


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Re: Converting alloy wheels to split rims

Post by roymck » Mon Aug 15, 2016 5:48 pm

I,m thinking similar thoughts , how far are you down the talking route with them.



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Re: Converting alloy wheels to split rims

Post by roymck » Mon Aug 15, 2016 5:56 pm

Jim PM sent



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Re: Converting alloy wheels to split rims

Post by scimjim » Mon Aug 15, 2016 8:40 pm

Alloy ready to send to them for a trial (valve position and amount of meat left on rim after machining are the limiting factors but from a photo he thinks it'll be okay). Purely needs me to find time to send it off - might get a chance this week. If successful, I'll get firm prices and bulk discounts and start a list.


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Re: Converting alloy wheels to split rims

Post by piman » Mon Aug 15, 2016 9:17 pm

Hello Roy,

my simple question is why?
I can understand why a wheel maker might wish to produce split rims to reduce the number of dies necessary to give the range of offsets and rim width.
Balanced against a conventional one piece wheel they are heavier (surely the point of Aluminium or better, Magnesium) wheels and potentially weaker, where is the benefit to the user?

Alec


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Re: Converting alloy wheels to split rims

Post by scimjim » Mon Aug 15, 2016 9:31 pm

Simple change throughout a range of offsets and widths as well as conversion to a far more popular (and available) diameter. I don't want a modern wheel, I want a period accessory - in fact I want Wolfrace slots.

If you can find 15x8 Wolfrace in the correct offset off the shelf, I'll have 20 sets please.

Plus - because I can :-)


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Re: Converting alloy wheels to split rims

Post by CNHSS1 » Mon Aug 15, 2016 9:32 pm

much lighter. The centres are cast alloy, or often machined billet, but the inner and outer sections are spinnings, so weigh very little.

a 11" wide x 15" split rim weight the same as a 5.5"x14" OEM SS1 Ti wheel.

an 11" wide x 13" diameter splittie plus crossply slick tyre weighs a few grans more than a bare 10" wide x 13" diameter steel Weller WHEEL ONLY as used by many for the small sports compies.

the spinnings are more easily damaged though, and are often not coated in anyway, although you can have them 'clear' anodized for a modicum of weather proofing.

major advantage from a racers POV is that you can alter offsets without buying all new wheel and can replace damaged sections.
worse bit is generally a grand to 1500 quid a set :cry:

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Re: Converting alloy wheels to split rims

Post by piman » Mon Aug 15, 2016 9:58 pm

Hello CNHSS1,

largely because most aftermarket wheels are made for appearance and durability not performance. I'm still not convinced that they are better than a properly designed lightweight wheel.
The idea of a spinning at the clamping point worries me unless substantial clamping rings are used, and from memory the wheels I have seen do not appear to be made with that style of construction?

Alec


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Re: Converting alloy wheels to split rims

Post by CNHSS1 » Mon Aug 15, 2016 10:03 pm

used in F1 up until late 80s, early 90s.

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Due to thinner material, much reduced unsprung weight and crucially allows more clearance for bigger brakes and calipers for a given wheel diameter


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Re: Converting alloy wheels to split rims

Post by CNHSS1 » Mon Aug 15, 2016 10:09 pm

I suspect Jim's only machining the outer rim off a cast Wolfe, so as to keep OEM back spacing but allowing extra offset creating wheel widths never available in period. Very popular in some German car clubs, taking an often piddle width OEM wheel design and widening to bring up to more modern tyre widths. You get the looks and originality of OEM wheels but with more modern widths, very 'retro modding'.
Basically no different to Ford cutting and shutting std steel rims on Lotus Cortical and the like to make 'super wide' 6" wheels from std 4.5"
How times change...


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Re: Converting alloy wheels to split rims

Post by philhoward » Mon Aug 15, 2016 10:15 pm

Banded steels are still alive and kicking...


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Re: Converting alloy wheels to split rims

Post by scimjim » Mon Aug 15, 2016 10:20 pm

Yep - coupe steels going away for banding to fit to diesel at the end of the year :-)


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SECURE DRY STORAGE FOR YOUR SCIMITAR

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Re: Converting alloy wheels to split rims

Post by roymck » Mon Aug 15, 2016 10:27 pm

I agree with Jim, I want period look alloy wheels but with the advantage of a 15 inch diameter and a wider rim size . This will open up a whole new world of decent tyres and keep the same rolling diameter.



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Converting alloy wheels to split rims

Post by Crouchie_b » Fri May 29, 2020 5:36 pm

Hi gents, did this project progress?

As some of you may have spotted, I recently picked up a set of Compomotive CX1361’s in 13x6J. These are/were intended to go on JPS as the road wheels but they look so dam sexy I’d really like a set for sprinting in but would need 8 or 10’s.

So i duly e-mailed Compomotive & Barry Dixon e-mailed back “Looks like you have some CX1361's from the 1980's. That range was made in 5,.5x13, 6x13, 7x13, 8x13 and a 9x13. But not for maybe 25 years so no stock or any chance of new production.”

So good news is they are period to the car but bad news is they aren’t available in 10’s, and they appear to be as rare as hen’s teeth in a 4x100 pcm, hence my interest.


Crouchie_b

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