Shimano Dura Ace 7410 barend shifters?

[Roamings]

I know I'm not a regular poster here... But I know this is probably the place I can find an answer.

I've been doing some research, and found that the barend shifters for the 7410 group are pretty rare... Or don't exist?

The only model number I can find is in a Shimano catalog, but it's the Ultegra model (SL BS50 ... Which I've read has a different shift ratio to the RD 7402 ...

They also appear to have a sticker saying they are not compatible?

So my question is, have any of you used this group for a Time Trail build with barend shifters, and if so which ones did you use? Or is there a work around?

 

[foz]

If you have a 7402 rear mech, then shimano 9 speed shifters pull the correct amount of cable to index it on an 8 speed cassette.

7410 wasn't really a group as such - the whole group started out as 7400, but various parts got upgraded and the numbers changed (brake calipers went double pivot, rear mechs went from 7 to 8 speed, etc). As you can see in the scan you posted, depending on the part it's either 7400, 7401, 7402, 7403 or 7410,but they all form a single group.

 

[Roamings]

If you have a 7402 rear mech, then shimano 9 speed shifters pull the correct amount of cable to index it on an 8 speed cassette.

Cheers for the reply.

So what you're saying is... If I go for the 9 speed shifter, just use the limit screw on the rear derailleur to cut the last shift out?

 

[foz]

Yes!

 

[one-eyed_jim]

Foz is correct - the SL-BS77 shifter from the 9-speed group pulls the right amount of cable per click to shift an 8-speed Dura-Ace system.

There was an 8-speed Dura-Ace bar-end shifter though, and it was indeed called the SL-SB50-8:

http://www.ebay.com/itm/291836723501

http://i.ebayimg.com/images/g/iLIAAOSw~ ... -l1600.jpg

http://www.cadre.org/bike_stuff/Shimano ... I00003.jpg

I have one on my desk as I type this, and the little sticker reads "Compatible with Dura-Ace rear derailleur". The plastic lever cover has "SL-BS50" moulded into it - no "8" in evidence. The date code sticker is "VB", i.e. February 1997.

The 8-speed Ultegra unit was the SL-BS64. The plain SL-BS50 was 7-speed Ultegra.

 

[PANZR]

The Dura Ace 7700 9-speed bar-end shifter is still available as a new part
It shifts Dura Ace 8-speed

 

[one-eyed_jim]

There was an 8-speed Dura-Ace bar-end shifter though, and it was indeed called the SL-SB50-8:

I meant, of course, the SL-BS50-8 !

 

[Roamings]

There was an 8-speed Dura-Ace bar-end shifter though, and it was indeed called the SL-SB50-8:

I meant, of course, the SL-BS50-8 !

I am totally lost here. The Ebay shifters are indeed SL-BS50-8 and it states Dura Ace... But all the other ones that I can find that come under the same model number state they are Ultegra?

I'm thinking the 9 speed Dura Ace shifter is the easier option.

Or... If you have one spare, I don't suppose you would be inclined to sell it?

 

[KermitGKona88]

Re:

I have a pair of the 8 speed Dura-ace compatible levers, but just the levers

 

[one-eyed_jim]

I am totally lost here. The Ebay shifters are indeed SL-BS50-8 and it states Dura Ace... But all the other ones that I can find that come under the same model number state they are Ultegra?

I think you can trust Shimano's documentation. It's true that a couple of internet shops seem to be listing BS50-8 shifters as Ultegra, but that's an error. ADFC has it right:

http://www.fa-technik.adfc.de/Herstelle ... no/SL.html

I'm thinking the 9 speed Dura Ace shifter is the easier option.

They're available new, and they work perfectly, as PANZR says.

Or... If you have one spare, I don't suppose you would be inclined to sell it?

I'd be happy to swap my NOS SL-BS50-8 r/h lever for a new BS77 9-speed unit.