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Re: redrilled rear vertical links

To: List Spit <spitfires@autox.team.net>
Subject: Re: redrilled rear vertical links
From: Andre Rousseau <andre@justdrive.ca>
Date: Sat, 30 Apr 2005 13:43:47 -0400
Ok, so now the rear has gone to an almost neutral camber, how will putting
the body onto the frame alter this now?

http://www.btinternet.com/~jon.wolfe/wolfitt_products_1.htm#Adjustable%20rea
r%20vertical%20link%20kit

I guess Larry will have to keep us up-to-date when his spit hits the road.

Maybe he is on to something.


--

Andri Rousseau - Ottawa Canada
"My Time Is Now!"

andre@justdrive.ca
http://www.justdrive.ca
1968 Triumph GT6 MK1 "Blizzard"
2003.5 Mazda Speed Protegi "Sun Shine"
Canon EOS 300D Digital Rebel


A.

on 4/30/05 1:34 PM, fpspitfire@insightbb.com at fpspitfire@insightbb.com
wrote:

> I wouldn't think this is an unsafe thing to do.
> 
> Many racers in the UK modify the vertical link by drilling holes or a series
> of holes.  I also have seen some plans that cut the top portion of the
> vertical link and replace it with a rose joing to adjust it.  I think it came
> from the Jon Wolfe book.
> 
> The only geometry of the suspension that it really changes is the angle of
> half shaft...and that changes in exactly the same way if you added a block
> under the spring.  Remember this is a swing spring so the upper control
> element is nothing more than a spring mount...it won't change how the
> suspension works or affect geometry through the travel of the suspension.  I
> don't even think it changes how the forces act from the spring to the vertical
> link as those are probably 90% vertical.
> 
> aaron
> 
> aaron
> 
> 
>> I think it would have been safer to put a spacer under the spring?
>> 
>> A.
>> 
>> on 4/30/05 1:12 AM, Joe Curry at spitlist@cox.net wrote:
>> 
>>> Larry,
>>> I understand your motivation in redrilling the uprights, but I have to
>>> say I would never even consider doing that.  It changes the geometry of
>>> the rear suspension because it moves the upper control element (the
>>> spring) closer to the lower control element (the axle).  Without doing
>>> any calculations, I am thinking that can't be good.
>>> 
>>> Joe
>>> 
>>> -----Original Message-----
>>> From: spitfires-owner@autox.team.net
>>> [mailto:spitfires-owner@autox.team.net] On Behalf Of Larry Vaughan
>>> Sent: Friday, April 29, 2005 9:01 PM
>>> To: spitfires@autox.team.net
>>> Subject: redrilled rear vertical links
>>> 
>>> I had a machine shop redrill my rear vertical links. One inch lower than
>>> the
>>> original. They charged me 60 bucks, which is less than dearching the
>>> spring,
>>> around here anyway. They made sure to have the new holes parallel and
>>> welded
>>> grade eight washers on the new holes.
>>> 
>>> I think it may be too low now. Here are some pics.
>>> 
>>> http://ljvaughan.homestead.com/lowerrear.html
>>> 
>>> Larry





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