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Old 09-03-07, 10:54 PM   #1
hhabca
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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??
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Old 09-03-07, 11:24 PM   #2
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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.
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Old 09-04-07, 04:17 AM   #3
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Old 09-04-07, 07:17 AM   #4
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Originally Posted by Scooper View Post
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.
hmmmm. from page 17-30
"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.
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Old 09-04-07, 08:03 AM   #5
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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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Old 09-04-07, 09:04 AM   #6
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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.
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.
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Old 09-04-07, 10:44 AM   #7
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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.
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):

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
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Old 09-04-07, 11:04 AM   #8
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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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Old 09-04-07, 12:31 PM   #9
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Quote:
Originally Posted by carpediemracing View Post
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
It sure does - thanks!
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Old 09-10-07, 08:33 AM   #10
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Originally Posted by well biked View Post
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.
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
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Old 09-10-07, 08:59 AM   #11
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Originally Posted by carpediemracing View Post
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
Thank you very much!
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Old 09-10-07, 08:08 PM   #12
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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.
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Old 11-13-07, 07:10 PM   #13
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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.
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Old 11-13-07, 08:00 PM   #14
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Try yellowjersey.org
I saw an Ambrosio Elite 19 pictured in their website regarding old stock rims.
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