[TR] [NET] TR3 Shock Rebuild

David Friedlander forzion7 at gmail.com
Wed Dec 28 13:28:17 MST 2016


Thanks for the lead on World Wide Auto Parts.

I thought you might be interested in seeing Peter's response
and very interesting photos. I have now sent him my rear shocks
to exchange for a pair of these.


Dave Friedlander

Peter Caldwell <peter at nosimport.com>
[image: Attachments]Dec 27 (1 day ago)
to me
On 12/26/2016 5:28 PM, David wrote:

David, Yes.  I'm attaching pictures and appending additional information.


-- Thank you for asking about our adjustable Armstrong shocks.

    Having been in the remanufacturing business of Armstrong lever
shocks for many, many years, we have had the opportunity to rebuild a
few of the original Armstrong "Adjustable 22" externally adjustable
shocks. You can find examples of these in some of the original
special tuning parts manuals. Armstrong had different castings made
for some of these models, but did not make them available for all of
their various models of shocks. Because the body is somewhat larger
and had a large adjusting knob, not all cars could be fitted with the
"Adjustable 22" units.

    We have been able to use their same principles and apply them to a
wider variety of lever shocks by employing an external and remotely
mountable valve alleviating the need for new castings and fitment
constraints.. The way the Adjustable 22's and our shocks work is by
utilizing an extremely stiff modified main original "co-axial" valve
assembly in the usual position, and providing a bypass circuit with a
variable needle valve that allows adjustment of the volume of oil
that passes through the co-axial main valve. (The "22" meant that
Armstrong had 22 steps of adjustment.) Our valve is variable without
steps, and can allow the shock to be locked solid without moving, to
full, undampened movement. By machining the co-axial valve and
replacing the springs with our custom made ones we succeed in
providing a damping rate equivalent to full competition at 1-1/2
turns open of a potential 5 turns.

    The valve is of brass body full flow stainless steel needle
construction. Connections between shock and valve are similar to
brake hydraulic equipment. We've been able to test fit these on all
of the models we offer to ensure accessibility and roadworthiness.

    Historically, shocks become less effective as the oil heats. Our
experience has been at about 20 - 25 minutes of track work, the
shocks lose their dampening. After several attempts, we are now using
Redline's suspension oils, and have been very pleased with the
performance, especially in this application.

    The modifications of the adjustable shocks are performed on our
highly regarded remanufactured units. We install sleeve bearings in
the bodies, install stainless shaft sleeves, and install radial lip
oil seals. Pistons and bodies are selected for their proven
reliability using the best combinations.

    Each order is custom made so that we can consider your intended use,
as well as any additional equipment you may have that would affect
the mounting of the valve. We also like to know if the ride height is
significantly changed as we can ensure the pistons are working in
their mid-range most of the time.


        Front adjustable shocks are $185.90 each.

        Rears are $163.90 each

        Usual core charge deposits apply.

    Please let me know if you have any questions. We are always open to

Thanks again.

    Peter Caldwell
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On Mon, Dec 26, 2016 at 4:24 PM, Robert M Lang <blang at mit.edu> wrote:

> Hi,
> I didn't see any responses to your query, so, here goes.
> I've done a number of installs with the Apple HD option. For light duty,
> the upgrade is okay. Note that the shocks lubricate via the shaft, so the
> shocks will leak and you need to fill them from time to time. I have PLENTY
> of shock fluid, if you want some. As far as ride, it's firm, but for my
> cars I run stiffer springs and the heavy shock action is needed. But
> Triumphs tend to ride firm anyway.
> If anyone ever wants an explanation of how and why you should upgrade
> shocks, I'd be more than happy to explain.
> Some time ago, I wound up contacting a different vendor in WI that
> rebuilds Armstrongs. These folks use a modern seal on the shaft and they
> don't leak! They offer various upgrades, I have become a big fan of the
> externally adjustable upgrade because RACECAR, but you can make them as
> soft of stiff as you like.
> It's been a few years, but the vendor is WorldWide Auto Parts,
> www.nosimport.com
> <http://www.nosimport.com/>
> World Wide Auto Parts of Madison <http://www.nosimport.com/>
> www.nosimport.com
> Welcome to World Wide Import Auto Parts... the website for World Wide Auto
> Parts of Madison, Inc in Madison, WI USA. We are located in a 15,000 square
> foot brick and ...
> The dude I worked with even has some videos on YouToob explaining how to
> rebuild lever shocks.
> Check them out. I'm very satisfed with the service.
> Regards,
> rml
> ------------------------------------------------------------
> ---------------
> Bob Lang           Cell: 339-927-4489 <%28339%29%20927-4489>
> ------------------------------
> *From:* NET <net-bounces at newenglandtriumphs.org> on behalf of David
> Friedlander via NET <net at newenglandtriumphs.org>
> *Sent:* Thursday, December 22, 2016 9:19 PM
> *To:* TR3 Triumphs; New England Triumphs
> *Subject:* [NET] TR3 Shock Rebuild
> Hey all ~
> I note that Appl
> ​e​
> Hydraulics offers to rebuild TR3 shocks with a $10
> extra charge for the heavy duty" option with "larger bronze bushing
> where main shaft rides. Shock valving is upgraded, 15% stiffer than
> standard shock."
> Anyone opted for the heavy duty option? It's not the nominal extra cost
> that concerns me -- it's the extra stiffness I'm wondering about....
> Comments anyone who's BTDT?
> TIA,
> Dave Friedlander
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