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HD/HDS Arm rest sides

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naumuk(at)alltel.net
Guest

Posted: Sat Mar 24, 2007 10:33 am Post subject: HD/HDS Arm rest sides

Guys-

     In a real pickle here. You'll  have to follow closely.

     I'm trying to install the arm  rest sides. They don't come close to fitting without forcing the rear of the  seat pan and channel forward about 10mm.    

     My plans clearly show, even  emphasize the distance from the c-section spar web  535mm to the front of the rear pan.

     1. I rechecked the distance  and I'm within 1mm.

     2. I checked the kit arm  rest sides. Everything's dead on except the 138mm dimension which  is 135mm. Shouldn't be a factor.

     3. Like an absolute idiot, I  removed the shims leveling the c-section thinking they might be distorting the  pan. Nope. Now I have to re-level.

     4. Checked the rear channel for  bow. Nada.

     5. Worked on the car for a while  to clear my head and came up with another check. Put an angle gauge on the pan  bottom to rear crossmember and came up with 60 deg. It's supposed to be 65.  Reset the angle gauge and, guess what. Yep, the rear crossmember winds up 10mm  forward.

     Here's the kicker. If you index  from the front of the spar cap rather than the  spar web, you wind up 10mm forward and everything's  hunky dory.

     Everyone, please check you plans  and see where your index point is indicated. If you ran into this while building  and had to rebuild your way out, please let me know. For those of you who  sleep next to your projects, another check would be the distance from the rear  channel to the Z spar. (Please provide the numbers).

     I'm looking at 2 weekends work  to correct this mess and want to make absolutely sure before refabricating a  half dozen components. 

     Thanks. 

      

 Bill Naumuk

HDS Fuse/Corvair

Townville,  Pa

   [quote][b]

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naumuk(at)alltel.net
Guest

Posted: Sun Mar 25, 2007 7:28 am Post subject: HD/HDS Arm rest sides

All-

     Seems the reference point is  correct. The other obvious explanation is that the print layout for the arm rest  sides is incorrect. No indications that there will be any trouble if the rear of  the seat pan is 10mm aft, but everything's right on except for the geometry of  the arm rest sides.

     I'm going to make a set of arm  rest sides to fit the pan opening and get on with life.

 Bill Naumuk

HDS Fuse/Corvair

Townville, Pa

 ---

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