Stud/Bush holder

[Slow M]

PM me if you would like a copy of the CAD file. (.dwg)2004
B

(Revised Dec. 3 2009)

Edited by Slow M on Thursday 3rd December 17:28

[Adrian@]

B, That's the late version 75-on ....The early 72-74 cars run with a different internals and need the suspension bush dressing down on the center-line of the rubber (due to the metal sleevings of the metalastic bush having moved up in size)...Just a thought.
Adrian@

[Slow M]

Adrian,
If you like, send me a sketch showing the dimensions of the early version and I'll be happy to draw that up too.
B.

[Adrian@]

Simple really... the internal bore of the eyelet has a full 1 inch and then minor chamfer to outside edge (IF you try fitting a current rubber bush into the early eyelet the rubber tries to rip off the sleeve ..hence the requirement to dress the centre-line of the rubber bush so as to relieve the pressure) Adrian@
P.S. when I say current bush ...these have been as this from around 1974, and the hence the conversion to the later eyelet.

[heightswitch]

Adrian@ said:

Simple really... the internal bore of the eyelet has a full 1 inch and then minor chamfer to outside edge (IF you try fitting a current rubber bush into the early eyelet the rubber tries to rip off the sleeve ..hence the requirement to dress the centre-line of the rubber bush so as to relieve the pressure) Adrian@
P.S. when I say current bush ...these have been as this from around 1974, and the hence the conversion to the later eyelet.

Adrian. I know from experience that there is nothing worse than having your sleeve ripped off when pushing into a bush. I always find that lubrication helps wonders

N.

[Adrian@]

That's it Neil, lower the tone of the place.
My thoughts were that the up sizing of O/D of the inner sleeve............ reduced compliance/increased stiffness, but then they couldn't get it in the hole.
Adrian@

Edited by Adrian@ on Wednesday 2nd December 22:44

[heightswitch]

Adrian@ said:

That's it Neil, lower the tone of the place.
My thoughts were that the up sizing of O/D of the inner sleeve............ reduced compliance/increased stiffness, but then they couldn't get it in the hole.
Adrian@

Edited by Adrian@ on Wednesday 2nd December 22:44

Its something I have wrestled with when turning up various bushes. What is the best oversize clearance on various bush materials when machining? IE you want the bush to be a good compressed fit but not so compressed as it turns oval around the inner sleeve and then wears unevenly??

N

[Seabass]

A real mechanical engineering question... Here's a link:

http://www.engineersedge.com/calculators/machine-d...

[heightswitch]

Seabass said:

A real mechanical engineering question... Here's a link:

http://www.engineersedge.com/calculators/machine-d...

Seems a bit long winded. i was just going to say about 2-3 thou
N

[Slow M]

Adrian@ said:

Simple really... the internal bore of the eyelet has a full 1 inch and then minor chamfer to outside edge (IF you try fitting a current rubber bush into the early eyelet the rubber tries to rip off the sleeve ..hence the requirement to dress the centre-line of the rubber bush so as to relieve the pressure) Adrian@
P.S. when I say current bush ...these have been as this from around 1974, and the hence the conversion to the later eyelet.

Like this?
B

[Adrian@]

B, that's perfect... So if you have a damaged wishbone and buy in new replacements they will come as later eyelets (If I rebuild the 4 corners on a M with early wishbones, I have a special 2 piece reamer that allows me to convert them all to the later version). Adrian@