Author Topic: Dura Ace type bar end shifters as thumbies??  (Read 9012 times)

lewis noble

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Dura Ace type bar end shifters as thumbies??
« on: August 06, 2013, 05:42:45 PM »
Hello everyone

I am thinking of putting these on my Ripio - similar to the installation that is shown in the Sherpa brochure page 11.  The reason is that dodgy thumb joints make the pushing away movement to change into lower gears (up to a bigger cog) uncomfortable and on a longer ride painful - I find myself changing either with the heel of my hand or several cogs at a time.

The thumbies look a good way round this, a neat idea - and if the changes take a millisecond longer for some reason, no problem. 

How do they work out in practice, has anyone got them??  And what way round does the rear changer operate?  Pull towards to go to a bigger cog or push away??  Not that that is an issue - either way would be more comfortable than what I am doing.

Thanks

Lewis
 

gover_1

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #1 on: August 06, 2013, 06:20:03 PM »
Hi. I fitted these to my Sherpa, and i have to say they are the best shifting system i have ever used. Whilst i am quite fond of perfectly adjusted drop bar sti's, I absolutely detest modern flat bar rigger sifters finding that after a hard days ride i always have sore thumbs.

I had intended to use them indexed, but then realised the benefits of going friction. I had long pondered over going for a rohloff for the simple reason that i am very lazy fiddling with gears when they loose their indexing- with dura ace thumbies in friction you get the benefits of a low maintenance drive train at a fraction of a cost (in reality not as low maintenance as a rohloff but much better than indexed sti)

I was worried that i would find gear shifting clumsy but i would say it took 10 minutes at most to get the hang of it now feels natural and i personally wouldn't have anything else on a flat bar - not just a flat bar tourer, any flat bar. I don't know where you are based but if you happen to ever be in the Manchester area and fancy trying them out, just let me know.

lewis noble

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #2 on: August 06, 2013, 06:58:45 PM »
Thanks - I am in Sheffield!

Sounds very promising - so they can be either indexed or friction??
 

gover_1

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #3 on: August 06, 2013, 08:14:39 PM »
Hi Lewis
I believe that whether they can be run friction or not depends on the donor shifter. My 9 speed shifters can be run friction but i have a gut feeling that the 10 speed can't.

I work away from home a fair amount and am away this weekend. The weekend after however we plan to be doing some light touring in the peak district, just to stretch the legs really and get out in the tent. If you fancy meeting up somewhere to have a play then drop me a pm.

cheers
Mark

lewis noble

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #4 on: August 06, 2013, 08:18:28 PM »
Mine will be a 9 speed set up - and I reckon this is the way for me to go.

Will pm you . . . .

Lewis
 

No

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #5 on: August 08, 2013, 02:21:30 AM »
Hi Lewis
I believe that whether they can be run friction or not depends on the donor shifter. My 9 speed shifters can be run friction but i have a gut feeling that the 10 speed can't.

I work away from home a fair amount and am away this weekend. The weekend after however we plan to be doing some light touring in the peak district, just to stretch the legs really and get out in the tent. If you fancy meeting up somewhere to have a play then drop me a pm.

cheers
Mark

10 speed is indexed only. Another reason I should have gone nine speed.

Danneaux

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #6 on: August 08, 2013, 03:33:00 AM »
Hi All!

One Shimano 10-speed bar-end shifter does indeed appear to support rear friction-shifting.

A quick glance at Shimano's tech docs indicates the SL-BS78 10-speed bar-end shifters have a friction option; you can see the "mode dial" on the right-hand pod with the D-ring to change between friction and index operation:
http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/SL/EV-SL-BS78-2282_v1_m56577569830609202.pdf Further proof is here in the installation guide:
http://www.shimano.com/media/techdocs/content/cycle/SI/Dura-Ace/SL-BS78/SI-6J60A_En_v1_m56577569830605258.pdf
...and in user reviews:
http://www.amazon.com/Shimano-Dura-SL-BS78-Road-Shifters/dp/B000NONVYA
http://www.buzzillions.com/reviews/shimano-dura-ace-sl-bs78-bar-end-shifters-reviews

BS78s are still available from a number of online retailers, buy seem to be on the wane. The are stocked for use with older D-A front mechs, as the 79s differ in this respect as well.

The SL-BS79 10-speed bar-end shifters do *not* support rear friction shifting; the 10-speed rear shifter is INDEXED ONLY, there is no friction mode for the rear shifter. Front shifter is friction-only just like all prior versions:
http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/SL/EV-SL-BS79-2873A_v1_m56577569830728256.pdf

Shimano distributors' pages have a note about the revised *front* mech cable pull of the BR79: "BS79 shifters only compatible with Dura-Ace 7900 front derailleur due to revised cable pull actuation (no friction option on rear shifter)" -- so the '79s differ in that respect as well.

8- or 9-speed drivetrains are more robust than 10-sp for the touring cyclist, but perhaps this tidbit from Shimano's own "deep web" will prove helpful to others.

Best,

Dan.

No

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #7 on: August 08, 2013, 07:47:02 AM »
They always have to make things complicated. This reminds me of the 12-30 tooth tiagra cassette that tiagra derailleurs won't work with but 105 derailluers will.

[minor language edit by Dan]
« Last Edit: August 08, 2013, 03:48:20 PM by Danneaux »

NZPeterG

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #8 on: August 08, 2013, 09:20:24 AM »
Hi All,
I have been running Pauls Thumb Shifters (Mounts) with Dura Ace 9 speed Bar end Shifters.



So I have not posted my shifters because they are on my none Thorn!

So I love using Thumbies after all the years! I still think that they are the best all round shifters to use  :) How if you go with 10 speed shifters and are using Mountain Bike gearing you must only use 10 speed Road Rear Derailleurs or use a 9 speed Mountain Bike Rear Derailleurs!

You Can Not Use a 10 Speed Mountain Bike Derailleur As It Will Not Work

All the Best  :)

Pete  8)


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lewis noble

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #9 on: August 08, 2013, 03:33:43 PM »
Thanks everyone - these shifters are on order from SJSC and eagerly awaited - I am sure they will work well.

I will let you knwo how it goes and post pics.

Looking out for the post . . . .

Lewis
 

lewis noble

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #10 on: August 14, 2013, 10:04:06 PM »
The shifters arrived the other day, and are now fitted - thanks Mark and others for the positive feedback and technical advice.

They are very good, and suit me and my dodgy thumbs very well.  Mine is the 9 speed version, on a Ripio frame.

The rear shifter (currently fitted on the R H of the bar) is indexed but can be set to friction.  The front shifter (currently L H of the bar) I think is friction only.

I like this set up very much.  The only downside, and a trivial one at that, is that there is less room on the bars for lights, computer etc. but I have sorted that out and am delighted with the set up.  No doubt before long the bell will fall off, be discarded, or repositioned . . . . A good shout always works for me . . . .

It reminds me very much of the first 'good' bike I had, back in the 1960s, a touring Witcombe I found in a junk shop.  I rebuilt it, rode it all over UK, and fitted bar end shifters, to a 'fiver' at the back and a 'double' at the front.  The ratios worked so that I went up changing alternately front / back - very satisfying.

So now I have 27 gears and am back to the same control system!!  But it suits my physical condition far better than the Rapidfire or whatever it is system that was fitted to the Ripio.

The bike is now more or less sorted the way I want it and I will post somewhere else how it is going.

Lewis
 

jags

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #11 on: August 14, 2013, 10:10:01 PM »
the front shifter is friction and index.see the little crome halmoon shape  Twist that around fully to change  from one to other ;)

NZPeterG

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #12 on: August 15, 2013, 10:19:25 AM »
the front shifter is friction and index.see the little crome halmoon shape  Twist that around fully to change  from one to other ;)

Hi Sorry this is Not true with an of Dura Ace bar end Shifters, But this is a good thing as the Friction is one of the best made in the last 10 plus years.

Pete  :o


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lewis noble

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #13 on: August 15, 2013, 01:49:13 PM »
Hello . . . .

Looking at my shifters, the one for the rear mech does have the clip thing on that can change it to/from friction /indexed.  But the one for the front one does not, is friction and I presume remains so.

I will have a look at the instruction sheet that came with it to make sure

Not an issue for me, anyway, they work very well indeed and I am well pleased.

Lewis
 

jags

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Re: Dura Ace type bar end shifters as thumbies??
« Reply #14 on: August 15, 2013, 02:03:41 PM »
mine too strange that  ::)