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Pin stand question

Posted by phlat65 
phlat65
Sean Medcroft
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Building a Merkur


Pin stand question
February 23, 2012 12:30PM
What is a good diameter for the pin and tube? I have some left over 1.250 .120 tube, so if I get a 1" OD pin, that gives me .010 clearance, that good?
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john vanlandingham
John Vanlandingham
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Re: Pin stand question
February 23, 2012 12:43PM
Quote
phlat65
What is a good diameter for the pin and tube? I have some left over 1.250 .120 tube, so if I get a 1" OD pin, that gives me .010 clearance, that good?

If its clean.

You using a VW Bilstein jack? (You should be) then make it fit the bar sicking outta that. Easier than modding the lack.



John Vanlandingham
Sleezattle, WA, USA

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slidewayswrx
Patrick Darrow
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Re: Pin stand question
February 23, 2012 12:50PM
Sean any chance of me getting you to fab up two sets at the same time? Don't see any reason why the stands would need to be different for the two cars. This is a planned mod for the Volvo and things always seem to go better and quicker when doing multiples. Certainly willing to pay market cost.

Did you see that pic that Wyatt posted to Facetube not to long ago?



Zap zap my ass...
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phlat65
Sean Medcroft
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Location: Edmonds, Washington
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Building a Merkur


Re: Pin stand question
February 23, 2012 12:54PM
Yeah, I could do 2 sets. pic of what?

I am not using that jack John. which cars does it come in? do you have one you could measure the pin on?
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NoCoast
Grant Hughes
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Re: Pin stand question
February 23, 2012 01:40PM
Quote
slidewayswrx
Did you see that pic that Wyatt posted to Facetube not to long ago?



That's the pic he was talking about.
We have designed and will soon be making and offering our own pin stands for sale. Haven't figured out price point as we're still waiting on the Tig.
Similar to these.
http://www.motorsport-tools.com/4-x-wrc-works-sill-stands-25mm-pin-p-267819.html
[/img]http://espimages.biz/2386/I/550/0/images_k%20606.jpg[/img]


For my car I did them with a 0.75" pin and I think 1" diameter receiver. Dave dropped the Evo on them and both stands are trash. Both bent but didn't completely fail. However, I did finish the break on one of them by hand. We've (aka Mark Malsom) since done a bunch of design and FEA and all that dumb engineering shit. Basically, a 3/4" pin is not sufficient and can fail as low as 1100 lbs depending on design. 7/8" or 1" is better.



Grant Hughes
http://rally.build
Denver, CO
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Gravel Spray
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Re: Pin stand question
February 23, 2012 02:00PM
7/8" 4130 pin.

You'll want about .060" clearence in the socket, any less than that and you'll be kicking shit and swearing at some point, anymore than .060" and the car will be unstable when on grass/dirt. One extra set in the center of the car is handy for front to rear swaps between stages.
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john vanlandingham
John Vanlandingham
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Re: Pin stand question
February 23, 2012 02:05PM
Quote
phlat65
Yeah, I could do 2 sets. pic of what?

I am not using that jack John. which cars does it come in? do you have one you could measure the pin on?

Yeah I think I have 3-4 of them here.
They came in OLD Beetles.



John Vanlandingham
Sleezattle, WA, USA

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CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.
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slidewayswrx
Patrick Darrow
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Re: Pin stand question
February 23, 2012 02:21PM
Sweet Sean! That's great, one less step on this end. I'll need to figure out a few more ways to slow your build down though if I'm to get mine done before you.

The pic that grant posted is indeed the one I was referring too. The look relatively simple yet strong and stable. The tray is a nice touch as well.



Zap zap my ass...
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phlat65
Sean Medcroft
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Re: Pin stand question
February 23, 2012 02:28PM
So Peter, 1.125 .095 4130 tube, and a .875 4130 pin gives .060 total, like that? Or the tube .120 bigger to give .060 all the way around and .120 total?
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Gravel Spray
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Re: Pin stand question
February 23, 2012 03:03PM
you want .060" or so total.

As for the stands, you could spend hours and hours making them or just buy a nice adjustable set like the ones AC hydrualic makes, cut the cup off the top and weld the pin to it.
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alkun
Albert Kun
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Re: Pin stand question
February 23, 2012 03:52PM
Plus 1 for the adjustable
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Gravel Spray
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Re: Pin stand question
February 23, 2012 04:16PM
Quote
alkun
Plus 1 for the adjustable

Very much worth it, low for quicky service or tire changes, way up for heavy service or re-prep.
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NoCoast
Grant Hughes
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Re: Pin stand question
February 23, 2012 04:24PM
Here's a cheaper option than the AC ones.
http://www.pelicanparts.com/catalog/shopcart/TOOL/POR_TOOL_ACHyd1_pg5.htm
$65 a pair instead of $110-180.



Grant Hughes
http://rally.build
Denver, CO
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aj_johnson
A.J. Johnson
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Re: Pin stand question
February 23, 2012 04:31PM
Quote
NoCoast
Here's a cheaper option than the AC ones.
http://www.pelicanparts.com/catalog/shopcart/TOOL/POR_TOOL_ACHyd1_pg5.htm
$65 a pair instead of $110-180.

I read that as $68 ea. ????
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Reamer
Jeff Reamer
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Re: Pin stand question
February 23, 2012 04:56PM
Good to know about the .060". I just installed the mounts on the car. I used 1.25" DOM with .120 wall. I was figuring for 1" but sounds like 7/8" will work better. That was good timing!



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