Hello there folks. I have tried to search the forums for any info on vintage drop bar replacement but I can't seem to find any. So I hope to get some help from you guys here.

I have a Centurion Accordo RS I use for commuting and the bar's width are too short for me. I read elsewhere during my fit research that the drop bars should be the same or close to the riders shoulder width. My shoulders are 46cm and my drop bars are 36cm. I always seem to experience pain when I ride the Centurion and I used to just rationalize it as not being used to it yet since I mainly ride MTB's. But now that I've purchased a Schwinn Fastback the pain difference is night and day between road bikes. The latter have the least pain in my hands, shoulder, and back. I've dialed the Centurion settings as close to the Schwinn as possible but the hand pain is more pronounce on the Centurion.

The question now is what drop bar can I use for this vintage bike. I've done some shopping but everything seems more geared to newer road bikes and very few vintage bikes. I found the itm super 330, pic below. Would that work? I'm not sure if it'll fit the "hole". Is there a standard size for the clamp for vintage bikes? The site says that the clamp for this bar is 25.88mm. Is that the diameter or circumference? Please help.

I have the same problem you have. There are two things to be aware of . One is the diameter of the bar and the stem "hole", the other is the problem of the modern "anatomically" shaped curves on the bars that simply will not allow the bars to be thread into the stemhole. Go to this site and check out what they got:
https://sheldonbrown.com/harris/handlebars/index.html

https://cgi.ebay.com/Nitto-B-115-Clas...QQcmdZViewItem I had the same problem with my Dave Scott centurion. Came with real narrow bars. These are the widest I found that would fit my stem 25.4 mm. Measure the diameter of your existing bars where the clamp goes. I think 25.4 mm is exactly one inch.

Take a look at the NITTO bars. They are well made, nicely finished and reasonably priced and have that class look. Also available in wider sizes. Also check out the Nitto stems while you are at it, also a good deal. They are very classy looking and Excellent bars for the $$'s A couple sources:

https://www.rivbike.com/webalog/handlebars_stems_tape/

https://sheldonbrown.com/harris/handl...handlebarsdrop

Thanks for the replies and links, fellow cyclists. I swear I could not have found those links on my own. I've googled the heck out of drop bars and vintage and the closest I've found is the pic posted. Now I have more to go on. The Nitto bars look spot on. How about the Super 330 though? Will the .48mm thicker make a huge difference? Anyways, thanks again.

There's an eBay store with Nitto 105 and 115's in a variety of widths.

I have 46cm Nitto Noodles and a Nitto Technomic stem. Great quality and looks great.

I generally hate drops. So, while looking around, I bought a used set of Midge bars and the guy threw in some Nitto B115's in 45cm. I tried the 115's and they work well. I still have to move around to stay comfortable - like on all drops - but I do stay comfortable. Also, the 115's have a classic look and they aren't very deep in the drop at only 5".

The drop grip section has a down angle of perhaps only 5 to 7 degrees. This allows me to have the hoods about level, instead of sloping down, away from me. At the same time, the drop grips remain pointed at the top of the rear tire, instead of the rear hub. Noodles are almost exactly the same except they have a slight rearward sweep in the straight section. Interesting, and popular.

The so-called ergo bend bars seem to be calibrated for more sportiv riders who like to flat-back alot. I can't stand the ones that came on my Sequoia Elite. This is a bike built as a recreational roadie. Fast, fun but not a competition type. Why did they put racing bars on the thing?? Musta had some lying around.

Just an update for anyone concerned. I decided to go with the Nitto noodles, 46cm. Since this bike will be used mainly for commuting I might as well make it comfortable. Thanks for all you guys help.

I love my Noodles....... Good luck.