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> Using mid 70's 911 rear hub-centric axle flanges, Anyone know the procedure?
PRS914-6
post Dec 26 2006, 06:31 PM
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Good Job...The spacer would have to be absolutely perfect or the rotors and wheels will wobble. Also, a small amount off that close to center would be huge at the tire tread....
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smdubovsky
post Dec 26 2006, 06:52 PM
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Subscribing... (this is a cool thread)

Its relatively easy to make perfectly parallel spacers on a lathe - a simple parting operation. That said, *I* dont think it makes THAT much difference. Radial and axial runout of the hub/wheel are controlled by the bearing. The bearing should be pressed onto the hub & stubaxle and their diameters control the locating. The lip on the stub or the spacer really only locate the race. The force from the big axle nut will try to distort the race slightly if the spacer isn't parallel, but it would REALLY have to be out of parallel to twist stuff enough to show up @ the wheel.
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PRS914-6
post Dec 26 2006, 07:06 PM
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QUOTE(smdubovsky @ Dec 26 2006, 04:52 PM) *

Subscribing... (this is a cool thread)

Its relatively easy to make perfectly parallel spacers on a lathe - a simple parting operation. That said, *I* dont think it makes THAT much difference. Radial and axial runout of the hub/wheel are controlled by the bearing. The bearing should be pressed onto the hub & stubaxle and their diameters control the locating. The lip on the stub or the spacer really only locate the race. The force from the big axle nut will try to distort the race slightly if the spacer isn't parallel, but it would REALLY have to be out of parallel to twist stuff enough to show up @ the wheel.


I posted that above so people would understand the concept and wouldn't cut a spacer with a hack saw and think it was OK. (IMG:style_emoticons/default/sawzall-smiley.gif) ......It's not. Not everyone has a machine shop.....
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John
post Dec 26 2006, 08:06 PM
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QUOTE(PRS914-6 @ Dec 26 2006, 04:31 PM) *

Good Job...The spacer would have to be absolutely perfect or the rotors and wheels will wobble. Also, a small amount off that close to center would be huge at the tire tread....



The bearing is still what centers the wheel and makes the hub run true. The spacer, however, if not close to perfect could put uneven side loading (preload) on the bearing.

I type slow with one hand. (My son is in my other arm.)
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PRS914-6
post Dec 26 2006, 11:23 PM
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Just got an e-mail from Jim Patrick. The later flanges did indeed use a bearing 5mm wider and 5mm larger.. He has used a 5mm spacer with good success. So it looks like we are in good shape with this mod. (IMG:style_emoticons/default/beerchug.gif)

John, I might have an extra set of flanges I could sell. I know I have 3 right now and when it quits raining I'll look to see if I have another.
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John
post Dec 27 2006, 12:32 AM
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QUOTE(PRS914-6 @ Dec 26 2006, 09:23 PM) *

Just got an e-mail from Jim Patrick. The later flanges did indeed use a bearing 5mm wider and 5mm larger.. He has used a 5mm spacer with good success. So it looks like we are in good shape with this mod. (IMG:style_emoticons/default/beerchug.gif)

John, I might have an extra set of flanges I could sell. I know I have 3 right now and when it quits raining I'll look to see if I have another.


Thanks.
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addwestern
post Dec 27 2006, 04:23 PM
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QUOTE(PRS914-6 @ Dec 26 2006, 02:09 PM) *

QUOTE(Eric_Shea @ Dec 26 2006, 01:54 PM) *

Costco = Best deal on latex gloves


Damn, you are right....I found a pair with your name on it..... (IMG:style_emoticons/default/happy11.gif)



Paul, a few times I thought you had an exact set for me....
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PRS914-6
post Dec 27 2006, 04:45 PM
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Nate, I have a whole box for you..... (IMG:style_emoticons/default/flipa.gif) (IMG:style_emoticons/default/av-943.gif)

OK, I made a couple of spacers today. All worked well except they require quite a chamfer to clear the radius on the flange. They should be ready to bolt on. Here they are....

Attached Image
Attached Image
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Aaron Cox
post Dec 27 2006, 05:31 PM
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oooh! these are VERY SIMILAR to what you need to run 944 stubs!!!

they require a spacer to go where the dust seal went....

interested in banging out a pair for some $$$?
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PRS914-6
post Dec 28 2006, 01:24 PM
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Aaron, if I get 3 or more who want them, I would machine them for $25.00 a set plus a couple of bucks for shipping. If you want a one item specific machine job, send me a PM.....
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96744
post Dec 28 2006, 02:35 PM
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I'll take a pair.
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roadster fan
post Dec 28 2006, 02:39 PM
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Hey Paul,

nice job on the spacers. I would like a pair for the mid 70's hubcentric stub axles. If you dont have enough interest to keep the price down let me know what they will cost, and let me know where to send the $.

Thanks,

Jim
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echocanyons
post Dec 28 2006, 03:22 PM
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Kinda looks like the metal spacer ring on the front spindle of 911's 65-89.

Probably not the same diameter but might be worth a look.

I think I have a set at home I could measure.
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DBCooper
post Dec 28 2006, 03:53 PM
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QUOTE(PRS914-6 @ Dec 28 2006, 11:24 AM) *

Aaron, if I get 3 or more who want them, I would machine them for $25.00 a set plus a couple of bucks for shipping. If you want a one item specific machine job, send me a PM.....


I'll also take a pair for the 944 stubs. Tell me how much and where to send it.

Thanks,
Paul Illick
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PRS914-6
post Dec 28 2006, 04:47 PM
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Guys, I want to make sure we are clear on this. I don't know what the 944 hubs require and I don't want to make spacers for you only to find they won't work. These will for sure take care of the 911 flanges. If the 944 are similar but different dimensions, the same price and 3 minimum apply.

Getting the material and the setup/cleanup is the time consuming part. The actual machining time is not bad but for one set, it's not worth it.

Someone needs to confirm measurements for the 944....Aaron?
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eeyore
post Dec 28 2006, 05:00 PM
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Under the "Somebody's already done that..." heading,
Patrick Motorsports makes the spacers too -- P/Ns PMPCASPO and PMPCASPI.
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PRS914-6
post Feb 25 2007, 12:13 PM
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I sold my spacers to another member and I'm going to make more this week. If anyone wants a set for $25.00 (and a couple of bucks shipping) let me know soon. This would be spacers for the 911 hub centric flanges.
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shoguneagle
post Feb 25 2007, 05:42 PM
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I would be interested in a set of spacers for the early 911 stubs. I do not have the centric type for the rims but have early 911(69-72?).

I saw on one of the boards where someone made up centric spacers that fit between the rim and the stub shaft. The rim side was machined to fit the particular rim being used; the hub side was machined to fit inside flange where the nut is located and held in place by an o-ring.

Let me know what is happening.

Steve Hurt
914-6GT (3.2 Carrera engine, Carrera front suspension, Carrera brakes on all four corners.)
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DBCooper
post Feb 25 2007, 06:01 PM
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QUOTE(PRS914-6 @ Feb 25 2007, 10:13 AM) *

I sold my spacers to another member and I'm going to make more this week. If anyone wants a set for $25.00 (and a couple of bucks shipping) let me know soon. This would be spacers for the 911 hub centric flanges.


I'll take a set. PayPal? Tell me where to send it.
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Aaron Cox
post Feb 25 2007, 06:36 PM
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QUOTE(PRS914-6 @ Dec 28 2006, 02:47 PM) *

Guys, I want to make sure we are clear on this. I don't know what the 944 hubs require and I don't want to make spacers for you only to find they won't work. These will for sure take care of the 911 flanges. If the 944 are similar but different dimensions, the same price and 3 minimum apply.

Getting the material and the setup/cleanup is the time consuming part. The actual machining time is not bad but for one set, it's not worth it.

Someone needs to confirm measurements for the 944....Aaron?


i can measure the 944 stubs i have if anyone is interested..
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