woodsideraff
Well Known Member
I'm in the process of installing a rear throttle on my 8A.
I ordered the rear throttle kit from Vans. I manufactured the rear quadrant mounting bracket and cut out the slot for the rear throttle lever. My troubles started when I looked at the alignment of the front and rear quadrants.
The rear throttle kit is designed to work with the three lever quadrant. My two level installation puts the throttle about 3/8" further inboard. Thus, the hole locations for the connecting rod are 3/8" far out of line ... out of the allowable area.
The solution I'm working on consists of displacing the quadrant outboard through spacers. This should work well with the rear connection, but would also put the levers out of alignment with the trhottle and mixture cables. OK, so I moved the cables from the two inboard holes on the cable anchor to the two holes further outboard and algnment seems to be tolerable.
After dissasembling the quadrant, I notice that there are two holes on the throttle lever, one forward and above the other, which is sligthly aft. It seems logical to me that these are the locations for the front cable and rear connecting rod. However, neither of these hole locations correspond to the OP-2 drawing that came with the rear throttle kit.
Before I start drilling holes on the quadrant lever and bulkheads, I would appreciate any guidance from any of you with a similar experience. In particular, what is the distance between the quadrant pivot axis and the throttle cable clevis attachment (this dictates the throttle travel lever arm). Should I scale this from the OP-2 drawing?
Any suggestions?
Thanks and best regards,
Rafael
I ordered the rear throttle kit from Vans. I manufactured the rear quadrant mounting bracket and cut out the slot for the rear throttle lever. My troubles started when I looked at the alignment of the front and rear quadrants.
The rear throttle kit is designed to work with the three lever quadrant. My two level installation puts the throttle about 3/8" further inboard. Thus, the hole locations for the connecting rod are 3/8" far out of line ... out of the allowable area.
The solution I'm working on consists of displacing the quadrant outboard through spacers. This should work well with the rear connection, but would also put the levers out of alignment with the trhottle and mixture cables. OK, so I moved the cables from the two inboard holes on the cable anchor to the two holes further outboard and algnment seems to be tolerable.
After dissasembling the quadrant, I notice that there are two holes on the throttle lever, one forward and above the other, which is sligthly aft. It seems logical to me that these are the locations for the front cable and rear connecting rod. However, neither of these hole locations correspond to the OP-2 drawing that came with the rear throttle kit.
Before I start drilling holes on the quadrant lever and bulkheads, I would appreciate any guidance from any of you with a similar experience. In particular, what is the distance between the quadrant pivot axis and the throttle cable clevis attachment (this dictates the throttle travel lever arm). Should I scale this from the OP-2 drawing?
Any suggestions?
Thanks and best regards,
Rafael