tonystott wrote:
Sorry, but I have difficulty sgreeing with your logic.
1. Pedal forces are concentrated on the FRONT lip.
Only if the front Drive tongue contacts it.
2. Building up the rear of the socket will INCREASE forces on the front lip.
Sorry, I don't follow you on this. I'm not sure wht the "rear of the socket" is.
3. In order to seal the leak, it appears necessary to build up the front lip during the repair.
Agreed.
4. This will result, if nothing else changes, in greater pressure on the front lip due to the retaining "axle"
If you shave off the underside of the Drive front tongue, space is created for the repair. There should be no static pressure at all.
5. Raising the "axle" by shimmimg the drive mount will lessen pressure on the front lip,
Raising the axle by shimming risks insufficient fin clearance under the hull, requires extra work and is not necessary considering the alternative you mention in the next line.
OR shaving off some of the front of the Miragedrive to accommodate the raised surface of the fron lip.
I see absolutely no benefit in raising the rear lip. Agreed.
Tony, perhaps I didn't communicate well. I agree there is no benefit of
raising the rear lip. I simply meant to suggest the possibility of building it
forward to close the gap (shown in the first pic above). I wouldn't do it that way unless there were alignment issues (where Drive nose is pointing too far down).
As you can clearly see in the second pic, the rear of the Drive is resting squarely against the drivewell. It is not touching the front lip at all -- nothing but air is touching the front of the drivewell, including the front lip. The Drive pivots around the drum axle. It is designed to make first contact with the "lip" at the front of the drivewell. If the front Drive tongue is too high , it will pivot against the rear "lip" as it rotates further (as pictured). I have a Drive that does this, so there is no logic involved.
I had occasion to work with another forum member with a PA who had this scenario and developed a leak in the rear of the drivewell where the blue arrow points (3rd pic). We applied the patch as I suggested here with the adhesive I suggested here and resolved the issue. So all the above recommendations were based on experience, not logic.
This is just my opinion as an option to attempting to repair the front lip. I wish SI every success however he decides to handle the problem!