re-arching springs
- Thread starter ericr
- Start date
dohcdelsol93
Junior Member
In my experience re arched springs like to loose their new arch more quickly the second time around and adding leafs to the pack to prevent this gives a rougher ride.
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Joe K
Well-known member
I would agree with the thought that re-arching will make a spring more liable to "lose" this arch.
Pushing a spring leaf "past the point of no return" as in reforming the arch MUST involve bringing the metal beyond the yield point. Some sort of deformation must be occurring. And once deformed - it don't go back .
Well, that is the point of going past the yield.
Also the matter of "fatigue." Think aluminum can pull rings as you bend them back and forth until they break off - you're fatiguing the metal by repeated passage past the yield point until the metal fractures at the grain boundaries (hence the "irregular" appearance of the fractured joint.)
And before the pull ring breaks you sense that it gets "easier" to bend it.
Still, re-arching can be used to extend the life of a spring.
But nothing is forever.
Joe K
Pushing a spring leaf "past the point of no return" as in reforming the arch MUST involve bringing the metal beyond the yield point. Some sort of deformation must be occurring. And once deformed - it don't go back .
Well, that is the point of going past the yield.
Also the matter of "fatigue." Think aluminum can pull rings as you bend them back and forth until they break off - you're fatiguing the metal by repeated passage past the yield point until the metal fractures at the grain boundaries (hence the "irregular" appearance of the fractured joint.)
And before the pull ring breaks you sense that it gets "easier" to bend it.
Still, re-arching can be used to extend the life of a spring.
But nothing is forever.
Joe K
Growley bear
Well-known member
One Model A parts vendor has a front spring 10 leaf for $147.00. And a rear spring 7 leaf for $259.00
The Ford parts price sheet for July 1, 1931 states the same springs as $2.75 and $4.50 respectively. I would have to imagine that the quality is there. I reached my front spring 3 years and 2000 miles ago and have not had any problems. I have had no experience with new springs. Reforming by hand should be done cold.
I maintained a fleet of trucks years ago and we sent the rear springs to a rebuilder who reshaped and baked them to re temper the steel. I don't remember the cost but the process worked well and the springs held up the abuse that a dump truck is usually subjected to. So that having been said, I think that it boils down to what will work best for you.
Chet
The Ford parts price sheet for July 1, 1931 states the same springs as $2.75 and $4.50 respectively. I would have to imagine that the quality is there. I reached my front spring 3 years and 2000 miles ago and have not had any problems. I have had no experience with new springs. Reforming by hand should be done cold.
I maintained a fleet of trucks years ago and we sent the rear springs to a rebuilder who reshaped and baked them to re temper the steel. I don't remember the cost but the process worked well and the springs held up the abuse that a dump truck is usually subjected to. So that having been said, I think that it boils down to what will work best for you.
Chet
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RonC
Well-known member
These are the best repro springs
www.a-springs.com
www.a-springs.com
modelaer
Member
I agree, I replaced my rear spring on my SW Fordor last fall and it now sets level and rides softer.
Pete
ericr
Well-known member
Hi Eric
Thank you for asking my question
How did you know
I guess i will go for new
Thank you all
Long distance greetings
Christoph
bitte sehr