I just got a set of Forgelines so I guess I am a bit jaded....

 

Shane, that's a cool wheel! What is it?
Thanks!
Rick

 

I am in

 

Rick, I don't know! I was browsing Autotrader and there is a black 91 S4 for sale that has these on it. Just borrowed the pic. I checked e-bay but have yet to see any of these for sale. Don't see them at wheel enhancement either.

 

Seems DR carries these now, very tasty.



Naturally CS wheels would be nice too

Chris

 

Call Suan at Devek. They offer converted manhole covers to CS slots. Unless you put your face up to them it is difficult to notice that they have been machined.

 

Shane, I think that's an ATP "Spa". I believe they've been discontinued, but there's a set listed in the classifieds here on Rennlist.

Cheers,
Jeff

 

Thanks Jeff!

 

Yes,
I would do it in a second if I was sure it wouldn't compromise the strength of the wheels
Doug

83 928s 5spd sold
88 euro, CS or in between 5spd 62000 km

 

The CS wheels seem to have a lot more curve near the rim judging by Garth's avatar. Is it the same as a Dish wheel or doable with a dish wheel or are we just making reasonable copies by just cutting the D-shaped holes to replicate CS wheels???

 

The curvature seen is a function of the particular width and ET: That particular wheel is a front 8x16, ET60 (rear is 9x16 ET60). The closest 'flatdish' to that would be the S4 rear 8x16 ET52.3 - and the curvature is close. The flat front 7x16 ET65 is, well, ... flat!

When you examine the rear face of both CS and the later* flats, they have analogous web reinforcement; therefore, I have no reason to suspect any compromise of the wheels integrity by removal of material within the web. It is important to follow good engineering practice if material is removed, even in a forging - blend and radius all cuts so as to not leave a stress riser.

* I said "later flats", for some very early ones I've seen do not have the same degree of reinforced webbing.

In the final analysis, you are correct in stating "or are we just making reasonable copies by just cutting the D-shaped holes to replicate CS wheels???". The " copies" should, however be very good ones. The differences are largely widths and ETs. Note that the 944 Turbo S CS front is 7x16 ET65 IIRC - sound familiar?

 

I am interested in doing this with my extra set of S4 wheels. Any suggestions on how to go about finding a shop to do this kind of work?

Someone said "milling". Does it need to be a computerized machine. Do I need to tell them anything other than these are alloy wheels. What do I do about coming up with the specs on what to cut out. Are they good enough at what they do to simply look at a picture or do we need a CS wheel physically there for comparison/measurement. Anyone in the Charlotte NC area with a CS wheel handy to make a template?

Honestly, I have little knowledge on what the machining process involves and am not sure what kinds of questions to ask to find a suitable machine shop to handle the job.

Couldn't a high school kid in advanced metal shop do this kind of work?

Can't I just do this myself with a dremel tool? (just kidding)

Thanks!

 

We need to find one of those waterpowered machines I've seen on American Chopper that will take a computer model and precisely waterjet cut the holes. At that point it will be a repeatable task and ALL our fuglies can become club sports VOILA! I am IN! Does anyone know where to find such a shop?

 

Heinrich,

We just need to send our wheels over to O.C.C. and have Vinnie cut out the slots. Don't have Paulie do it though... it would take much longer. I can see it now, Paul Sr. and Paul Jr. yelling over a set of "Flats".

 

I'm totally serious! Rob I bet if we put Mikey onto the project we;d end up with turbo twists