 ERP bump steer kit...., anyone have a pic? |
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| Aaron Cox |
 Apr 6 2005, 10:51 PM
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#21
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Professional Lawn Dart  Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California  |
yeah.... (IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) probably some big ass wheels on that car
its got to be bigger than an M10 bolt/heim joint.... i like thinking outloud.... (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) |
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| Eddie914 |
Apr 6 2005, 11:31 PM
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#22
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Unregistered |
It was Craig who drives a 911SC with a 3.6 varioram
He was lucky. It happened at the "infamous" turn 9 which ate quite a few car last year ( I saw two personally). Here is the link: Broken ERP Bump Steer Eddie |
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| MattR |
Apr 6 2005, 11:36 PM
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#23
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Advanced Member Group: Members Posts: 3,279 Joined: 23-January 04 From: SF Bay Area Member No.: 1,589 Region Association: Northern California |
Does anyone know the thread on a turbo tie rod?
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| Mueller |
Apr 6 2005, 11:57 PM
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#24
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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interesting read......
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| J P Stein |
Apr 7 2005, 02:09 AM
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#25
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Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
I went back & re-read the thread.
IMO, it's a lousy design. The bolt is not as stout as the part it replaces and is longer. The threads extend into one or the other joint (upside down or not). This allows movement in the joint. The standard tie rod bolt is "fitted" into the joint via the taper...no movement. One pic shows the threads were "working" in the joint.....the major dia of the threads are rolled over just below where the nut would be. There is no castle nut/cotter pin to keep the nut from backing off....unlike any other tie rod nut I've ever seen on any car. I don't have any idea what went on behind the scenes there, but sumthin' did, me thinks. The whole thing was just left dangling.....like the guy's suspension. I woudn't put them on if they were free. |
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| Brett W |
Apr 7 2005, 06:26 AM
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#26
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Advanced Member Group: Members Posts: 2,856 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None
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If the piece were made from one piece of some very strong steel alloy it wouldn't have broken. Perhaps Astralloy or some 4340 you probably wouldn't have any problems. It would need to be case hardened. They probably use a grade 8 bolt. Grade 8s can be to brittle. Grade 5s will bend before they break. WE also don't know what kind of maintenance the owner did either.
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| rhodyguy |
Apr 7 2005, 08:12 AM
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#27
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,080 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
other than the bling factor, use on a street car seems like over kill. dot approved? if something went south on the public roads, what's the ins co going to say?
k |
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| jd74914 |
Apr 7 2005, 08:35 AM
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#28
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Its alive Group: Members Posts: 4,780 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
do you think the the insurance company would be able to figure that out?
BTW: it looks like the 911 was running some serious rubber, that puts alot of force on those bolts. |
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| rhodyguy |
Apr 7 2005, 08:48 AM
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#29
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,080 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
if there was a serious injury/death? you bet!! when you tell the state police "i don't know what happened, i just lost my steering", they will give things a look and make the appropriate notation. most trick items come with a disclaimer regarding "racing parts'.
k |
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| Jeroen |
Apr 7 2005, 01:29 PM
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#30
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914 Guru Group: Members Posts: 7,887 Joined: 24-December 02 From: The Netherlands Member No.: 3 Region Association: Europe |
I remember a pic posted here by Brad quite some time ago
It showed a strut with a simple second arm welded to it (a little lower) which enabled the longer bumpsteer kit to be mounted in double sheer |
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| redshift |
Apr 7 2005, 01:38 PM
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#31
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Bless the Hell out of you! Group: Members Posts: 10,926 Joined: 29-June 03 Member No.: 869 |
Aaron, watch it... the way you are going, you'll become a complete 914 tech weenie.
(IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif) Look what it's done to Jeff Bowlsby! (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) M |
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| 914werke |
Apr 7 2005, 01:59 PM
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#32
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"I got blisters on me fingers" Group: Members Posts: 10,066 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest
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Eddie, I dont get the skid-mark pic in the post? it was shot reverse direction on the front straight at PR (formally SIR JP (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) ) But the suggestion was that is was turn 9?
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| ArtechnikA |
Apr 7 2005, 02:46 PM
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#33
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
i read that whole long PP thread... the short version seems to be that plus or minus a bit, it's not appropriate unless you have raised the spindles on the struts. the other issues in the thread: the bolt had evidently been loose, to some extent, for whatever reason, for a while. since the bolt can be replaced without affecting any alignment settings, i think it'd be prudent to simply develop and stick to a replacement schedule... say -- annually or each front pad replacement, or after hitting anything hard enough to bend a wheel - whichever came first... an AN or a metric 12,9 fastener might be an upgrade - but as was brought out in the thread - few of us have the luxury of buying hardware like that in small quantities from reliable sources - and the initial engineering on the part indicated the Grade 8 was appropriately strong (i too recall Carroll smith decrying both Grade 8 in suspension and any bolt in single shear...). field failures have evidently been rare, but i'm sure each is memorable... after reading that whole long thread i'm not as willing as JP to write off the product -- but then i don't need it, either... |
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| brant |
Apr 7 2005, 02:56 PM
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#34
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914 Wizard Group: Members Posts: 11,624 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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just want to clarify Rich's statement about requiring a raised spindle, or not being appropriate to use...
I have cut strut tubes, but effectively this lowers the steering rack in the same way so that is another appropriate use. thanks for the summary Rich! brant |
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