Heims Joint used to be a great place for a beer..
RB
----- Original Message -----
From: "sherry robyn" <sherryjimmy6116@att.net>
To: "Robert M. Lang" <lang@isis.mit.edu>
Cc: <fot@autox.team.net>
Sent: Thursday, February 14, 2013 6:18 PM
Subject: Re: [Fot] Series 80 Koni adjustment
> On the suggestion to use heims joint, I can see that this principal could
> be
> advantageous but not sure how it would be done practically in the
> application
> of
> tube shock conversion and the trailing arm. I can't quite see how to use
> it on
> either end. I would think that the larger shock mount holes and rubber
> shock
> mount bushing might have a similar affect to the heim joint. Jim
> ________________________________
> From: Robert M. Lang <lang@isis.mit.edu>
> To:
> Jack Mc <LimeyV8@aol.com>
> Cc: sherry robyn <sherryjimmy6116@att.net>;
> "fot@autox.team.net"
> <fot@autox.team.net>
> Sent: Thu, February 14, 2013
> 12:23:57 PM
> Subject: Re: [Fot] Series 80 Koni adjustment
>
> Hi,
>
> Just to be
> clear, what Jack refers to is the fact that there are significant
> bending
> loads that can occur from both the normal motion of these telescopic
> shocks
> and supension bottoming that can occur because most of the tube shock
> conversions eliminate the lower bump stop in some manor, or at the very
> least
> change it. The point being that the SPRING (actually the wheel rate)
> limits
> the
> total weight transfer... so, in theory you can limit some of the bending
> load to
> the frame because of the shock. Note also that where the shock mounts
> to the
> trailing arm, there is an arcing motion, so this adds to the bending
> loads. So,
> if you can mount the shock at the trailing arm and the frame with
> heims joints,
> you should probably do so.
>
> As a point of information, the Gp
> 44 TR6 used the stock shock location on the
> trailing arm, albeit with
> considerable reinforcement and the top was secured to
> the roll cage. That
> setup is rock-solid - so a telescoping shock can be used.
> The key is where
> you mount it.
>
> Also, not mentioned to this point is the fact that "we" really
> can't know the
> condition of the frame in question and that would have
> considerable bearing on
> whether the setup will work or not.
>
> If this was my
> car, and I had no other options, I'd def. add "check rear upper
> crossmember"
> to the pre-event check for every event as this setup can result in
> failure in
> that area.
>
> I'll also point out from experience that the trailing arms
> themselves are prone
> to cracking either at the shock mount or between where
> the hub mounts and the
> pivot points, so if you go really, really stiff on the
> suspension, the trailing
> arms are likely to fail.
>
> On the other hand, you can
> set up the suspension fairly soft like it came from
> the factory... just don't
> chuck the car around or you'll bottom the suspension
> all the time and I'll
> guarantee that stuff will break.
>
> :-)
>
> rml
> ---------------------------------------------------------------------------
> Bob Lang Triumph TR6!! | This space for rent
> Former
> NER Solo Chair |
> Voice:617-253-7438
> | Cell: 339-927-4489
> ---------------------------------------------------------------------------
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/fot/budscars@comcast.net
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
|