Mark69 Posted March 9, 2019 Report Share Posted March 9, 2019 (edited) Having replaced the bushes in the steering column I was disappointed to find I still had a lot of play at the wheel. Hadn't realised how much the inner shaft had worn. Decided to silver solder shaft and have the local engineering shop machine back to spec. Really pleased with results. Edited April 14, 2020 by Mark69 Quote Link to post Share on other sites
ed_h Posted March 9, 2019 Report Share Posted March 9, 2019 Proper repair. Well done. Ed Quote Link to post Share on other sites
PodOne Posted March 9, 2019 Report Share Posted March 9, 2019 Please don't take this as negative but how long will it last? Is the silver solder is softer compared to the steel it replaced? Quote Link to post Share on other sites
Mike C Posted March 9, 2019 Report Share Posted March 9, 2019 When I've had shafts repaired like this I get the shop to build up the shaft using metal flame spray then machine it down. The cost is reasonable and the shafts last forever. Quote Link to post Share on other sites
Mark69 Posted March 9, 2019 Author Report Share Posted March 9, 2019 It probably will wear a lot quicker than original material, welding was an option but worried about warping the shaft. Quote Link to post Share on other sites
Charlie D Posted March 9, 2019 Report Share Posted March 9, 2019 Mark, Being a 3a owner with a one piece column I may be talking a load of bowlegs, but from what I remember on Heralds etc doesn’t the bush fit inside the tube part and have two circular “bulges” that fit into holes drilled in the outer tube for location? If this is the case maybe it would have been easier to relocate the bushes an inch away from the original places so they rub on a new part of the inner column. But maybe that is not possible. Charlie Quote Link to post Share on other sites
PodOne Posted March 9, 2019 Report Share Posted March 9, 2019 1 hour ago, Mike C said: When I've had shafts repaired like this I get the shop to build up the shaft using metal flame spray then machine it down. The cost is reasonable and the shafts last forever. Anyone had this done in UK? Quote Link to post Share on other sites
Waldi Posted March 9, 2019 Report Share Posted March 9, 2019 I think the silver solder repair outlast most of us. It is pretty hard, and higher strength than most other hard soldering techniques. Cold spray can provide very hard wear resistant layers but the question is if this is required. Typically, the shaft is machined down locally a bit before spraying and this reduces strenght. Also if there is no smooth contour, there is a risk of crack initiation (it can break) and so I would prefer the soldering technique for this reason in this application. Waldi Quote Link to post Share on other sites
ed_h Posted March 9, 2019 Report Share Posted March 9, 2019 In terms of hardness, silver braze is similar to mild steel. Ed Quote Link to post Share on other sites
Z320 Posted March 9, 2019 Report Share Posted March 9, 2019 The POM bushes (or nylon bushes) fitted tight on the shaft and with too much play in the correct position? Quote Link to post Share on other sites
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