2006 at the Hammond Barn

[RHClarke]

Originally posted by Grant Bowker
As I understand it, your new springs were built using the old ones as patterns, and they matched visually (but no-one put a micrometer to them) ??
I don't think it would take more than about a 1/4 inch difference in center pin position to provide clearance rather than interference. As we wrestled the springs into place, we measured to confirm closest to 101 inch and were very close to 101". Would we have noticed/rejected 1/4" over as long as it was closest to 101?? Phil's photos show much more clearance than "just barely clears".
At the time we were more concerned with getting the (apparently too short) driveshaft to match up than shocks, although moving the axle further back (we put it in the further back of the two possibles, didn't we?) would help both issues.
I'm scratching my head as hard as I can, without brilliant answers.

Grant,

Some good info is coming this way from other 45 HUP owners. I just checked some photos of a Manitoba 45 HUP and it has the same style arms as my HUP. This leads me to believe that sometime in 45 (by August - post VE Day) the design spec changed for the shock arms...

The only replacement parts on the springs were the top leafs, the centre pins and one bracket. All else is the same. You will recall that we measured the original top leaf and came within 1/8th inch of the new leafs. So the centre pin theory seems to be ruled out.

As for the wheelbase - we hit 101, so that isn't the cause. The driveshaft problem will resolve itself when I move the flanges closer to the cotter pin holes - I expect that the missing 1/2 inch will show up...(fingers crossed). Keep scratching!

Fortunately we have Bob's "centerfold quality" HUP photos to take our minds off of these challenges for a little while.

By the way, Phil/Mark Perrry, what is the manufacture date on your HUP?

RHC