help replacing an Ambrosio rim...
I have a wheel with an old Ambrosio Elite 19 rim on, and the rim is bent badly enough that a bike shop can't true it. I believe them - I tried for two evenings and getting the lateral wobbles out results in some spokes super tight and others loose. With no spoke tension, these is a 1 inch lateral wobble and about a 1/2 inch out of round.
I'd like to replace the rim with another Elite 19 but finding one of these will take some time. Is there anything new I could get that might drop right in without changing the spokes, or am I looking at a new rim and spokes too? The hub is an old, but excellent condition, Shimano 105 with 126mm spacing. I know - I should upgrade but I want to keep the bike close to original so I'm not ready to space it out to 130 and replace all the shifters just yet. I've got the Brandt book, and I'm willing to replace the rim or build a wheel up myself. Other options are new wheelset from eBay - there is a pair for $120, complete with 6spd UG, but shipping ads another $40 to that. Seems overkill to buy a new pair of wheels because of one rim.. Any ideas?? |
I wouldn't give up yet on the rim.
You can download the Barnett's Manual chapter on wheel truing and repair (including straightening bent rims) for free. Click HERE, and scroll down the page to "Download Chapter 17: Wheel Truing and Repair". Right click on the link to download the 904 kilobyte PDF file to your hard drive. Follow the rim straightening instructions to see if you can salvage it. |
Check your PM's
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Originally Posted by Scooper
(Post 5203718)
I wouldn't give up yet on the rim.
You can download the Barnett's Manual chapter on wheel truing and repair (including straightening bent rims) for free. Click HERE, and scroll down the page to "Download Chapter 17: Wheel Truing and Repair". Right click on the link to download the 904 kilobyte PDF file to your hard drive. Follow the rim straightening instructions to see if you can salvage it. "There is no more difficult wheel repair than repairing a rim with a lateral bend." Blocks of wood and rubber mallets look to be the tools of choice - could be good therapy! I'll give it a try. |
I'd give up on it. If you can find the ERD, you can find a new rim with the same ERD and swap out.
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Originally Posted by tellyho
(Post 5204861)
I'd give up on it. If you can find the ERD, you can find a new rim with the same ERD and swap out.
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Originally Posted by hhabca
(Post 5205271)
That was plan A. I think I'll go and loosen it up and measure a spoke to see what length of spoke it has, then try to get a rim to match that spoke length.
http://www.damonrinard.com/spocalc.htm They have a spoke length calculator (needs excel to read) which has the Ambrosio Elite. I would strongly, strongly, strongly recommend using new spokes (in which case the length is not really an issue). Spokes are elastic and become un-elastic over time. Eventually they fatigue to the point they fail. New spokes will make things much easier when building up a new wheel. Consistent, predictable tension. Also shiny spokes look nice. Nevertheless, if you want to use the old spokes, I'll save you some time and c/p the results (+/- 1 mm): ERD, not sure, diameter, 622=clincher, name+model 615.0 0.0 700C tubular Ambrosio Crono 615.0 0.0 700C 622 Ambrosio Super Elite 615.0 0.0 700C 622 Araya 15 615.0 0.0 700C 622 Araya 16A(5) 615.0 0.0 700C 622 Araya SP-20 615.0 0.0 700C tubular Campagnolo Los Angeles '84 615.0 0.0 700C 622 Campagnolo Ypsilon box 615.0 0.0 700C tubular Fiamme Hard Silver 615.0 0.0 700C tubular Fiamme Super Corsa 615.0 0.0 700C tubular Mavic Argent 10 615.0 0.0 700C tubular Mavic Argent 7 615.0 0.0 700C tubular Mavic Argent 8 615.0 0.0 700C tubular Mavic GEL280 615.0 0.0 700C tubular Mavic GL330 615.0 0.0 700C tubular Mavic GP4 old rounder 615.0 0.0 700C tubular Mavic OR7 615.0 0.0 700C tubular Mavic Paris Roubaix SSC (ERD is Mavic's Nipple Seat Dia + 3mm for nipples) 615.0 0.0 27" 630 Sun CR16 615.0 0.0 700C 622 Wolber/Super Champion Module 58 615.0 0.0 700C 622 Wolber/Super Champion Module 59 614.0 0.0 700C 622 Ambrosio Elite 614.0 0.0 700C 622 Araya PX35 614.0 0.0 700C 622 Araya SS-45 614.0 0.0 700C 622 Araya VX300 614.0 0.0 700C 622 Araya VX400 614.0 0.0 700C 622 Campagnolo Delta XL, Omega XL, Lambda, Omicron box (very low profile) 614.0 0.0 700C 622 Campagnolo Strada 614.0 0.0 700C 622 Campagnolo Strada 614.0 0.0 700C 622 Campagnolo XL Strada 614.0 0.0 700C 622 FiR EL20 614.0 0.0 700C 622 FiR EL45 614.0 0.0 700C 622 FiR ES35 614.0 0.0 700C 622 FiR EU90 614.0 0.0 700C 622 FiR SC150 actual weight 380gms! 614.0 0.0 700C 622 Matrix Titan T (touring) 614.0 0.0 700C 622 Mavic E2 614.0 0.0 700C 622 Mavic G40 614.0 0.0 700C 622 Mavic Mod E 614.0 0.0 700C 622 Specialized C20 614.0 0.0 700C 622 Specialized C22 614.0 0.0 700C 622 Specialized HC19 614.0 0.0 700C 622 Specialized HC20 614.0 0.0 27" 630 Sun M14A (old) 614.0 0.0 700C tubular Sun M20B 614.0 0.0 700C tubular Wolber Aspin 614.0 0.0 700C 622 Wolber/Super Champion Gentleman GTA2 614.0 0.0 700C 622 Wolber/Super Champion Gentleman GTX 614.0 0.0 700C 622 Wolber/Super Champion T430 Alpine 614.0 0.0 700C tubular Zipp 140 12mm deep box section aluminum tubular 613.7 0.0 700C 622 Rigida AS 23 X (ERD is Rigida's Nipple Seat Dia + 3mm for nipples) 613.0 0.0 700C 622 Ambrosio Elite City 22 613.0 0.0 700C 622 Araya SP-30 613.0 0.0 700C 622 Campagnolo Omega Strada and Strada Hardox box style (about 20mm wide) 613.0 0.0 700C 622 Campagnolo Topaz 613.0 0.0 700C 622 Mavic MA2 (ERD is Mavic's Nipple Seat Dia + 3mm for nipples) 613.0 0.0 700C 622 Mavic MA40 (ERD is Mavic's Nipple Seat Dia + 3mm for nipples) 613.0 0.0 700C 622 Mavic Mod 3D Argent 613.0 0.0 700C 622 Mavic Mod 50 613.0 0.0 700C tubular Mavic Reflex -- MEASURE TO BE SURE!!! 613.0 0.0 700C tubular Mavic Reflex -- MEASURE TO BE SURE!!! 613.0 0.0 700C 622 Nashbar UC13 613.0 0.0 700C tubular Sun M17A (tubular) 613.0 0.0 700C 622 Wolber/Super Champion Gentleman 81 hope this helps cdr |
Wow, thanks for posting that, carpiedemracing......do you know if the Fiamme tubulars listed are "red label," "yellow label," etc.? The reason I ask is that I've got some Fiamme "yellow labels" from about 1972.
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Originally Posted by carpediemracing
(Post 5205955)
Try this site:
http://www.damonrinard.com/spocalc.htm They have a spoke length calculator (needs excel to read) which has the Ambrosio Elite. I would strongly, strongly, strongly recommend using new spokes (in which case the length is not really an issue). Spokes are elastic and become un-elastic over time. Eventually they fatigue to the point they fail. New spokes will make things much easier when building up a new wheel. Consistent, predictable tension. Also shiny spokes look nice. Nevertheless, if you want to use the old spokes, I'll save you some time and c/p the results (+/- 1 mm): ... <snip> ... hope this helps cdr |
Originally Posted by well biked
(Post 5206124)
Wow, thanks for posting that, carpiedemracing......do you know if the Fiamme tubulars listed are "red label," "yellow label," etc.? The reason I ask is that I've got some Fiamme "yellow labels" from about 1972.
617.0 0.0 700C tubular Fiamme Ergal (Yellow Label) 617.0 0.0 700C tubular Fiamme Ergal-Iride 615.0 0.0 700C tubular Fiamme Hard Silver 617.0 0.0 700C tubular Fiamme Master 617.0 0.0 700C tubular Fiamme Red Label cdr |
Originally Posted by carpediemracing
(Post 5241223)
According to that same spreadsheet, they are a bit off from the Elite 19 -
617.0 0.0 700C tubular Fiamme Ergal (Yellow Label) 617.0 0.0 700C tubular Fiamme Ergal-Iride 615.0 0.0 700C tubular Fiamme Hard Silver 617.0 0.0 700C tubular Fiamme Master 617.0 0.0 700C tubular Fiamme Red Label cdr |
Hmm... sorry for saying this but yes u can still fix the rim but u need to hammer it (no joke) U need a piece of wood and a good hammer. hit that sucker with all you can because some rims are super hard as the mavic gp4 for example or a nisi durex. Probably u'll need to repeat the thing like 5 times.
thanks. |
quick update....
I took the good Ambrosio rim off the front wheel, and transfered it to the back wheel, keeping all the original spokes (as per J. Brandt's advice in his book). Of course, this is the lowest cost option for me only because I have an extra front wheel - a Specialized hub with Matrix Titan rim. This leaves me with the bad rim, which I'll try hammering on - it's out by 1/4 inch. |
Try yellowjersey.org
I saw an Ambrosio Elite 19 pictured in their website regarding old stock rims. |
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