[Fot] Armstrong Lever shock adjustment

[Duncan Charlton]

John,

I can report only on the ease of doing the adjustments, not the effectiveness.  I can’t remember the number of turns or the thickness of the spacers, but on my 1957 Morgan Plus 4 (a road car) but used 20 weight fork oil (Harley Davidson label) since I only wanted to affect rebound and not jounce.  It was easy enough to make the changes with the shocks out of the car.  It’s hard to say just how much of an improvement was caused by the adjustments alone, unfortunately, because I found the shocks were low on oil when I decided to rework them due to the axle banging on the frame when I drove over every whoop-de-do in the road.  One was about 65% full and the other was only 50% full of oil and I have to assume that the low oil condition was primarily responsible for the lack of damping.  They weren’t visibly leaking so I wasn’t able to determine why the car came to me in this condition.  At any rate, the car rides like a Morgan that has been modified to use tube shocks on the back so I’m happy with the overall result.

One caution — I don’t have any proof of this but I have read the opinion that the shocks can be damaged by using oil that is too viscous.

Duncan
(Texas)

> On Sep 9, 2015, at 7:50 AM, John Styduhar <johnstydo at gmail.com> wrote:
> 
> I'm going to stiffen up the rear lever shocks on my TR by refilling with higher viscosity fluid per the Kastner preparation manual.  I've also read about adjusting the springs in the valve body to adjust dampening - tighten the nut on the rebound spring 2 to 4 full turns, and add a spacer of .040" to .080" under the compression spring.   Any members have experience with these spring adjustments?  Thanks 
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