Originally Posted by Montegue
To sort Monty's handling I knew the dreadful original factory rear leaf springs had to go, shockingly they'd gone soft in just 10,000 miles so they clearly weren't correctly tempered from new!!!

Originally Posted by Montegue
You were lucky you got 10,000 miles. Mine were gone before the car even left the factory, after we got home Borgi replaced them with a set of 5 leaf springs: way too hard!
Where on earth did Morgan source these dreadful leaf springs from anyway, and what steel were they made from?
My guess is India, where there are lots of leaf spring manufacturers who will sell you something that looks like an automotive leaf spring, but is actually made from very poor quality steel.

Another great post! However, I have not heard of any MMC leaf spring from India..though there was a long period when I did not track the MMC.
Perhaps I can add some perspective for you. At least during my time of Morgan ownership (30 years), the MMC has always been parsimonious
in their component sourcing with trads. (Nothing terribly wrong with that if you prioritize researching and choosing the best product first and then
try to find less expensive way of purchasing it). However, in their hard years after the Aero launches 2002, the MMC also became very slow payers,
something new for them after almost 100 years.

When that happens suppliers try to find ways of compensating. The leaf springs of the traditional supplier of many decades started failing. For example,
I have 5 springs on a 2002 and they are STILL good, showing a drop of 1/4" at the rear. However, in 2005-2007, during the complete restoration
of another, almost identical mog in the UK, I went through 3 sets of 5ers, each collapsing unacceptably after a 3000 mile trip! I solved that by switching
to the newer GMP 4 leafs, (sourced other than the MMC) which I and the later buyers after me swear by to this day! (17 years). Yet my Help Box was soon
regularly filled with failing GMPs since. I believe the MMC has tried others, all with the same eventual result.

This bothers me constantly on behalf of trad owners. I agree with you completely. These leaf failures vastly degrade what should be a sublime experience
in comfort. Because of their flexing frames, leaf springs are IDEAL for Morgan trads. Link suspensions focuses forces...an inevitable no-no for such frames.
But if one cannot find proper leaf springs, what other choice is there? I began scouring North America, where the long trucking distances puts leaf spring
makers every 50 miles. ALL experts agree with you. It is a question of poor steel quality. You certainly have my vote! I also very much like the
way you (& Dan White) dealt with tramp and costless with no prejudice to comfort!!!

However, there is a couple of minor related problems. Stock trad axle saddle plates and stock u-bolts are not strong enough. They shear. The ubolts also
stretch, requiring replacements at each service. I use graded 7/16 and a thicker graded plates. I sourced them from Peter Mulberry back when
Axle ubolts& plates. As well, the MMC axle centering pins used to be (perhaps still are) ungraded. They shear, forcing one, eventually, to drive home sideways! doh At the price, it is wise precaution to use graded ones. Easy to swap in when changing leaf springs. Makes a potential problem disappear forever. My Morgans are a little silly in the power department (I try to keep them detuned down to 292bhp on Rob Wells' wise advice). So any component that can survive my Morgan for decades can survive any trad.

If you are selling heftier plates and ubolts already..can you indicate that and I will add it to the Gomog recommendation for your company. You are a very welcome
addition to the short list of great new Morgan suppliers.

Lorne

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Last edited by gomog; 23/04/23 03:15 PM.