10s Barcon as DT shifter

[pcxmbfj]

Considering going 1 X 10 on a early 90's Serotta by using the shifting part of a Shimano barcon.
I've had some mating issues on DT shifters in the past and would like to know if some other forumite has been down this trail before.
What parts would be needed or may be hard to obtain before it's feasible.
And if not will consider using on bar end.

[Ssalmon]

I've seen it, it's doable. You just need to replace the washer thing that sits between the Barcon and the bar end plug. It doesn't look great and I don't think it's worth the trouble.
http://img.tapatalk.com/d/14/04/14/2e7aresy.jpg
The one on the left is what you have and the one on the right it what you need.

[oldpotatoe]

Considering going 1 X 10 on a early 90's Serotta by using the shifting part of a Shimano barcon.
I've had some mating issues on DT shifters in the past and would like to know if some other forumite has been down this trail before.
What parts would be needed or may be hard to obtain before it's feasible.
And if not will consider using on bar end.

If it has a normal DT shifter boss. Put the plate that goes onto the Barend shifter just under shifter, onto the frame, put on shifter and done. Looks kinda funky but it's fine.

[oliver1850]

Here's another option: 6208 lever with 7800 mechanism. The 6208 mechanism had a defect and they turn up every now and then with broken mechanism. The 7800 fits right in. I have these on an otherwise 1050 equipped 1990 Pinarello - allows 10 speed with period correct look. I have plenty of the 7800 mechanisms if you can come up with a lever.

[pcxmbfj]

I do have a set of 600 DTS that match the 600 RD and FD.
Tried to use them in earlier build which is at root of the question of fitment. They were missing a washer that went next to frame IIRC and did not work..
Had to use set of Suntour Accushift 7s and my index shifting is good for 3 of 7 gears on cobbled cassette.
Do they have to be 6208 specifically or just 600 vintage?

[oliver1850]

Other levers may work if you can get the mechanism out. Don't know why, but 6208 and 10 speed are made so it comes out easily. All others that I've seen are pressed together and don't come apart.

[thirdgenbird]

Will a 7spd tricolor RD and shifter cover 10spd with this upgrade?

[ColonelJLloyd]

Ssalmon described what you need, but you don't have to use a bar end shifter unless you just like the shape. Shimano still makes 10s downtube shifters. However, they come with the flat washer so you'll need to source the curved one.

And, yes, in my experience those curved washers work with shifters from 6-10s.

[oldpotatoe]

Ssalmon described what you need, but you don't have to use a bar end shifter unless you just like the shape. Shimano still makes 10s downtube shifters. However, they come with the flat washer so you'll need to source the curved one.

And, yes, in my experience those curved washers work with shifters from 6-10s.

You can use a flat washer, just doesn't sit so sveltly next to downtube.

[ColonelJLloyd]

You can use a flat washer, just doesn't sit so sveltly next to downtube.

Right. I never said it wouldn't work. Looks pretty Fredly, though.

[blilrat]

Ssalmon described what you need, but you don't have to use a bar end shifter unless you just like the shape. Shimano still makes 10s downtube shifters. However, they come with the flat washer so you'll need to source the curved one.

And, yes, in my experience those curved washers work with shifters from 6-10s.

I recently bought new Shimano 10s DT shifters and they came with the curved washer. I wonder if it's a part number difference to get curved vs flat.

[oliver1850]

Will a 7spd tricolor RD and shifter cover 10spd with this upgrade?

I suspect so, but don't know for sure. I used a 9 speed RD on the Pinarello because it was handy and I didn't have the matching 1050 I wanted on hand.

[thirdgenbird]

I suspect so, but don't know for sure. I used a 9 speed RD on the Pinarello because it was handy and I didn't have the matching 1050 I wanted on hand.

Thanks. I know a member that may want this setup.

[oliver1850]

I've got various 105 and tricolor RDs on hand, so can try one out if you want to know for sure.

[thirdgenbird]

I've got various 105 and tricolor RDs on hand, so can try one out if you want to know for sure.

Itts not for me, it's for netdewt. I will try and drag his attention this way.

I'm still looking for that gravel ride btw. This month has been crazy thought. It's not going to get better either.

[Admiral Ackbar]

Will a 7spd tricolor RD and shifter cover 10spd with this upgrade?

not sure if this is of any help but i have a bike with 7sp 105 dt shifters (from 1991) and an 8/9sp 105 dangler and on the friction setting it will shift a 10sp cassette no problem. i believe any shimano road rear derailleurs that are 7sp+ will shift 7/8/9/10 speed cassettes if setup properly

[pcxmbfj]

Will a 7spd tricolor RD and shifter cover 10spd with this upgrade?

I doubt it. Plan to use a newer RD to get consistent shifting.
Also want a bigger cog than RD can handle.

[ColonelJLloyd]

I recently bought new Shimano 10s DT shifters and they came with the curved washer. I wonder if it's a part number difference to get curved vs flat.

My shop ordered them from QBP (Dura Ace) and there was only one option. Maybe they changed that. The curved washers were perpetually out of stock when I was in need.