The new hardened support blocks for the crossbars have been installed.  It took 4400 lbs of linear stretch on the port side, and 4200 lbs on the starboard side, to pull the crossbars apart enough to slip in the blocks.   Actually those forces were applied to just one corner of the crossbar,  (i.e.  three blocks were installed and the final one could only be popped into place when the aforementioned forces were applied to the end of the crossbar directly over the last block.)  I had taken the time to carefully adjust the thickness of the blocks to get both  springs this close in balance to one another:  an exercise that was complicated by the fact that, in terms of overall length,  the starboard spring is 2/10″ longer than the port side.  This discrepancy naturally required two sets of differently dimensioned blocks.

I will not bind on the blocks with sinew yet.  I’m curious to see if the sloped bottoms on the new blocks will curtail their outboard migration.    Below, Firefly has been fitted with a low grade test string just to draw the limbs back far enough to extract the bronze hardstops for further fit up work.

Now that the linear stretching of the springs is complete,  tomorrow I will start the torsional tightening of the washers.  After a round or two of gradually rotating the washers and pulling back the string,  the static position of the limbs will settle down and I should be able to get a pretty good fix on how much to relieve the bronze hardstops to get them fit to the new limbs as sensibly as possible.

A good fit up between the thickened impact area on the limb irons and the detachable bronze hardstops,  is strongly recommended  by my little friends.   They say everything needs to be peachy-keen in the limb impact department before we advance to any live fire exercises.

2 Responses to “Peachy.”


  1. Warhammer1 says:

    While calculating the main stress point (likely breakage point)it occurred to me that if being drawn at the time what the most likely consequences if breakage would occur in one arm so that it snapped clean off…

    If you look at the picture and work out the possible trajectory(s) of the broken limb piece(s), it might suggest some precautionary safety measures should be observed?


  2. nick says:

    I didn’t think “calculating”, at least in the mathematical sense, was your thing. Your solicitations concerning my health and safety have been noted and logged.

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