Hi folks I sent off a quick note to Petrofs engineering department for their factory specs on hammer bore lengths for this grand I mentioned yesterday... and was pleasantly suprised to get the following response "Dear Mr. Brekne 430019 is model No2 length 235 made in 1986. I dont know accurately what You mean by hammer bore length. But In case of vertical is defined distance between rear edge end bore. In case of grand is different situation. Distance Hammer forhead - string must be 45mm. So it needs to use fitting to proper position ( and bore - hammer forehead distance is not defined). More over. In year 1986 hammer rear cross section was square without radius and lighting. " Course this means they take the position that one is to hand fit each set of hammers to each new instrument as it comes off the line. Anyways... as many manufacturers supply standard bore lengths I thought this an insteresting, if unexpected answer from Petrof. Cheers ! RicB -- Richard Brekne RPT, N.P.T.F. Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html
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