A quick / final(?) update as I can't be arsed and there doesn't seem to be a lot of interest..
Cracked on with the Routier fairly early this morning. First job was the re-check the frame alignment using some fine fishing line for a more precise / reliable value, suggesting that the seatpost tube was misaligned with the dropouts by about 2mm - with a reading from line to tube of 31mm on the DS and 35mm on the NDS.
I set about the frame with a long bit of steel tube, with a bit of rag attached to one end to protect the frame and a block of wood / another rag at the seatpost tube to lever against. After a sustained period of swearing and knocking over of things, I got to a value of 33mm each side. Unfotunately I'd failed to account for the fact that the rear wheel doesn't really like 120mm spacing (I need an additional 2mm washer to give clearance for the likely-non-original Shimano cassette at the RD hanger) and measuring the clearances again confirmed that the frame wanted around 34mm each side of the tube with the wheel fitted; which it was duly widened out to.
After more buggering about with axle alignment and wheel dish, with the leading edge of the wheel central in the chainstays I ended up with maybe 1.5mm wheel offset towards the DS at the seatstays / rim, rather than the 5-6mm I'd had previously.
With the frame inverted the rear wheel now also looks pretty well aligned with the down tube; rather than either offset or angled relative to the tube as it was previously.
Next the front wheel was stripped, cleaned and rebuilt with original spokes, hub and nipples with the "new" ally rim. Trued on the bike as best as possible, tyre fitted.. brakes re-centred, fitted with new cheapo, ebay-sourced "Jagwire" rubber blocks and set up.
I also fitted the "new" Selle Royal saddle and punted the seatpost height up a bit.
Went out to get some eggs (there were no eggs ) and shake the bike down.. had to play with the rear axle as the NDS evidently wasn't tight enough; allowing the wheel to skew and rub. The front wheel also has some eccentricity to it, although this looks due to tyre fit rather than a rim issue.
For those bothered the steel rims that came off weighed around 790g each while the ally replacements were around 460g - so a saving of 330g per wheel or (if my assumptions are correct) the equivalent of around 1300g saved on bike mass from an acceleration / inertia perspective. Since the new rims are geometrically similar to the old ones but their material is around 1/3rd as stiff they should also be more compliant.
The bike does seem maybe a bit more sprightly and nicer-riding, however this could be psychosomatic and ride quality isn't really a fair comparison on account of the new saddle.
Brakes are noticeably better than the fibre pads with chrome rims (and no doubt still bedding in); being acceptable if not stellar. They do feel a lot nicer running on straight rims while the front no longer squeals
Tbh I was looking forward to today as a cathartic and satisfying process, and while progress has been made there are still lots of little things that aren't right - although I've absolutely had enough today so they'll have to wait..
Cracked on with the Routier fairly early this morning. First job was the re-check the frame alignment using some fine fishing line for a more precise / reliable value, suggesting that the seatpost tube was misaligned with the dropouts by about 2mm - with a reading from line to tube of 31mm on the DS and 35mm on the NDS.
I set about the frame with a long bit of steel tube, with a bit of rag attached to one end to protect the frame and a block of wood / another rag at the seatpost tube to lever against. After a sustained period of swearing and knocking over of things, I got to a value of 33mm each side. Unfotunately I'd failed to account for the fact that the rear wheel doesn't really like 120mm spacing (I need an additional 2mm washer to give clearance for the likely-non-original Shimano cassette at the RD hanger) and measuring the clearances again confirmed that the frame wanted around 34mm each side of the tube with the wheel fitted; which it was duly widened out to.
After more buggering about with axle alignment and wheel dish, with the leading edge of the wheel central in the chainstays I ended up with maybe 1.5mm wheel offset towards the DS at the seatstays / rim, rather than the 5-6mm I'd had previously.
With the frame inverted the rear wheel now also looks pretty well aligned with the down tube; rather than either offset or angled relative to the tube as it was previously.
Next the front wheel was stripped, cleaned and rebuilt with original spokes, hub and nipples with the "new" ally rim. Trued on the bike as best as possible, tyre fitted.. brakes re-centred, fitted with new cheapo, ebay-sourced "Jagwire" rubber blocks and set up.
I also fitted the "new" Selle Royal saddle and punted the seatpost height up a bit.
Went out to get some eggs (there were no eggs ) and shake the bike down.. had to play with the rear axle as the NDS evidently wasn't tight enough; allowing the wheel to skew and rub. The front wheel also has some eccentricity to it, although this looks due to tyre fit rather than a rim issue.
For those bothered the steel rims that came off weighed around 790g each while the ally replacements were around 460g - so a saving of 330g per wheel or (if my assumptions are correct) the equivalent of around 1300g saved on bike mass from an acceleration / inertia perspective. Since the new rims are geometrically similar to the old ones but their material is around 1/3rd as stiff they should also be more compliant.
The bike does seem maybe a bit more sprightly and nicer-riding, however this could be psychosomatic and ride quality isn't really a fair comparison on account of the new saddle.
Brakes are noticeably better than the fibre pads with chrome rims (and no doubt still bedding in); being acceptable if not stellar. They do feel a lot nicer running on straight rims while the front no longer squeals
Tbh I was looking forward to today as a cathartic and satisfying process, and while progress has been made there are still lots of little things that aren't right - although I've absolutely had enough today so they'll have to wait..
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