Hartford Shock Absorbers

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McKaige
Posts: 2
Joined: Sat Aug 11, 2012 11:09 pm
Name: Chester McKaige

Hartford Shock Absorbers

Postby McKaige » Wed Aug 15, 2012 11:30 pm

For some time now, I have been taking a great interest in the way people mount their Hartford shock absorbers not just on Alvises but any vintage car. Some choose to have them mounted with one blade up and two blades down or two blades up and one blade down. My 12/50 D/back is fitted with three blades up and two blades down and I have recently changed them to two blades up and three blades down without any noticeable difference. Some say its to do with co-efficient of friction as to which way they are fitted.
I have studied numerous period books of all sorts of cars fitted with friction disc type shock absorbers and still remain mystified.

Any ideas?

IanHardaker
Posts: 67
Joined: Mon May 21, 2012 12:41 am
Name: Ian Hardaker
Location: Genoa, Ohio, USA

Re: Hartford Shock Absorbers

Postby IanHardaker » Thu Aug 16, 2012 2:00 am

It cannot make any difference, it is like using a pair of pliers, you have to push equally on each arm to make them work. On the Hartfords you have equal torque whether the axle is attached to the double arm or the triple arm. The only difference would be a minute difference in a portion of the unsprung weight of the axle if the triple leg was attached to it instead of the double leg. You would never tell the difference, so mount them in whatever way cosmetically pleases you!

Angus D'Arcy-Drake
Posts: 78
Joined: Mon May 21, 2012 9:05 am
Name: Angus D'Arcy-Drake

Re: Hartford Shock Absorbers

Postby Angus D'Arcy-Drake » Thu Aug 16, 2012 9:34 am

It is Hartford's you're talking about after all. Hardly the last word in technological wizardry!

RichardWallach
Posts: 340
Joined: Mon May 21, 2012 10:14 am
Name: Richard Wallach
Location: Melbourne, Australia

Re: Hartford Shock Absorbers

Postby RichardWallach » Wed Aug 13, 2014 10:05 am

Angus D'Arcy-Drake wrote:It is Hartford's you're talking about after all. Hardly the last word in technological wizardry!

Yes I agree, but you would like to keep them the same way as it left the factory.

Angus D'Arcy-Drake
Posts: 78
Joined: Mon May 21, 2012 9:05 am
Name: Angus D'Arcy-Drake

Re: Hartford Shock Absorbers

Postby Angus D'Arcy-Drake » Thu Aug 14, 2014 10:05 am

I think that '2 blades pointing upward and 3 pointing down' is the correct mounting. I know a good firm for supplying spare parts, who will fit new bushes at a very reasonable price if required. The bushes are b4stards to fit.

johnlayzell
Posts: 149
Joined: Mon May 21, 2012 2:44 pm
Name: John Layzell

Re: Hartford Shock Absorbers

Postby johnlayzell » Wed Jan 21, 2015 5:37 pm

Does moving the pointer from 1 through 5 make any significant difference? Is 1 or 5 the softer setting? Mine have been set at 4 since I've had the car, and is fairly harshly sprung.
1925 SC12/50
1937 SP25 VDP Saloon
1970 Peking to Paris Rally VW Beetle


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