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#1
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Dimensions for 944 hub machining
Hi,
I am buying some brakes from an 86 944 (single piston ).Has anyone got a drawing or dimensions to modify the front hub for a ball joint beam.I probably could work it out but as this is a popular mod i am sure somone has the details to give as close as stock wheel offset.Also can you use the porsche bearings for the back as well as the front .I am aware that you have to make a sleeve for the front (outside) bearing. I have done some research but cannot find the hub mod dimensions. thanks in advance. |
#2
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I have drawings on my site, look in the speedster bit...
Rich
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http://www.ricola.co.uk |
#3
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What was your change in track over the stock setup?
What about the spindle modification? |
#4
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Sorry mate i havnt done it yet!
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#5
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I can answer that now .It was a 3mm each side.
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The wisest mind has something yet to learn |
#6
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Yeah, good work. A very neat solution, I like your caliper mounting bracket, I think mine is going to be harder work!
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fastbug.net | FastTrack Dub Club "Straights are the boring bits that link corners together" |
#7
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I have added pictures showing the tools that where made up in order to machine accurately.
http://www.fastbug.net/node/219
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fastbug.net | FastTrack Dub Club "Straights are the boring bits that link corners together" |
#8
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Thanks Ricola ,Your site is has been an inspiration .I Was a toolmaker many years ago ,but still have access to a lathe in my maintenance dept, so i can do the machining myself.Are both the inner and outer bearings vw and are they drum or disc bearings ?not sure if they are the same.Just had one hickup though,i hadnt realized you use a drum stub axle and i have two sets for discs only ,so now need to find some more!Thanks again.
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#9
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I apologize Skeeter, the question was directed toward Ricola.
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#10
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I'm pretty sure that VW drum/disc bearings are the same so that bit's easy. From memory the increase in track was about 9mm?
What about the spindle modification? It was only a matter of spotfacing the mounting face and grinding down a bit for clearance.. Rich
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http://www.ricola.co.uk |
#11
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I have just done this conversion and used ricola's excellent drawings i have a nice set up now like you i went and got disc stubs for some reason thinking that was what you needed . when you get the drum stubs you might find that you have to machine down the backing plate locating ring as my hub was just catching also used the dimensions on here for the caliper adaptor plates
Sorry for the rusty pic garage got flooded |
#12
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Disc stubs
Thanks for the pic ,
I spent some time at the weekend measuring my disc stubs to see if i can use them .I have figures out that i need to drill the two M10s for the bracket 8mm in front of the back plate mounting holes which have the same pitch of 56mm .What i did find strange is that the mounting point measured from the rear bearing shoulder to the caliper mount is the same .This means that i need to gain the 10mm for the bracket.I can gain the 3mm from deepening the hub and the rest from machining the stub axle as you did the drum one .This leaves 10mm of tapped hole for the bracket and makes the caliper sit as the original spec.Of course i then have to cut the original vw mount back.Incidently i have build up up my stubs with weld and machined to use the porka bearing .I may regret this as it seems to use an imperial race 3/4 and 1"1/4.
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The wisest mind has something yet to learn |
#13
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I like the idea of that i did look at using disc stubs first of all but had a set of drum ones laying around so i took the easy route
Iwould be intersested to hear if the welding works as i think i would prefer that to the spacers i have used |
#14
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If I understand the mods to the hub, the overall runout of the entire system will be a function only of the accuracy of the new bearing spacers (and of course the original parts' accuracy).
Very nice job, BTW. Bill |
#15
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I think the run-out we measured was on the face of the brake disk as bolted to hub (so 'wobble' if you like), not run-out at the circumference (from centering errors), but both could be effected by centering errors, and bearing spacer inacuracy as you say. Thanks, but he takes all the credit for the machining, I was just mad enough to envisage it all working...
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