Bicycle Mechanics - Alternate solution for lack of reach adjuster screw on brake lever

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.




digger
11-20-09, 07:07 AM
I have a set of Shimano 600 brake levers I am giving to a friend. Her hands are quite small and unfortunately there is no reach adjuster screw on these levers.
I seem to remember some...wedges that can be used to hold the lever in a slightly closed position. For the life of me I cannot seem to find them, perhaps because I do not have the proper name for them.
Anyone know of these and a link?


Metzinger
11-20-09, 07:38 AM
Specialized makes these:
http://www.specialized.com/media/equip/05SlimShims_l.jpg
http://www.specialized.com/ja/en/bc/SBCEqProduct.jsp?spid=30994
Which look to me as though they fit into the brifter.

Other types of shimming involve spacing out the upper edge of the brifter where it contacts the handlebar.
This can be done with a piece of rubber, but requires undoing the tape on the bars.

roughrider504
11-20-09, 07:54 AM
You could try adjusting the caliper to bring the brake pads further away from the rim. This would make the brake lever come closer to the handlebar before the pads touch the rim. He would still have to reach a little to grab the brake lever, but he wouldn't have to stretch while braking.


digger
11-20-09, 08:54 AM
You could try adjusting the caliper to bring the brake pads further away from the rim. This would make the brake lever come closer to the handlebar before the pads touch the rim. He would still have to reach a little to grab the brake lever, but he wouldn't have to stretch while braking.

Thanks for the info guys. I wasn't clear in my last post. They are NOT brifters, rather Shimano 600 aero brake levers. She will be using bar end shifters.

I'll take a look at those shims from Specialized, and if they do not quite fit, then perhaps they can be cut to fit.

Metzinger
11-20-09, 09:16 AM
I'll take a look at those shims from Specialized, and if they do not quite fit, then perhaps they can be cut to fit.

I doubt they will work. Seems like they're tailored for specific levers.
I would unwrap the bar tape and find something flexible but not too compressible to insert behind the top of the lever bases.
Some use a bit of rubber that come with bike computers for mounting and glue it to the bars.

Or buy these.
http://ecx.images-amazon.com/images/I/31M-y97fU3L._SS500_.jpg
Cane Creek SCR-5compact. (http://www.treefortbikes.com/107_333222344071__SCR-5c-Compact-Aero-Levers.html)

fuzz2050
11-20-09, 09:22 AM
Thanks for the info guys. I wasn't clear in my last post. They are NOT brifters, rather Shimano 600 aero brake levers. She will be using bar end shifters.

I'll take a look at those shims from Specialized, and if they do not quite fit, then perhaps they can be cut to fit.

If you're a tinkerer, I've seen people do this

126197

digger
11-20-09, 11:29 AM
If you're a tinkerer, I've seen people do this

126197

[/I]

It just so happens I AM a tinkerer and have bee considering this option - of inserting a homemade wedge on top of the lever. looks like I will have to try that. Thanks though!

Digger.

fuzz2050
11-20-09, 12:31 PM
[/I]

It just so happens I AM a tinkerer and have bee considering this option - of inserting a homemade wedge on top of the lever. looks like I will have to try that. Thanks though!

Digger.

sweet, I'm sadly lacking on details as to how that was done. It looks like a rivet, but I don't exactly know. If you want guidance, I pulled that pic off this (http://blackmountaincycles.blogspot.com/) blog. Send him an email, he might be able to help.

stevetone
11-20-09, 02:21 PM
I doubt they will work. Seems like they're tailored for specific levers.
I would unwrap the bar tape and find something flexible but not too compressible to insert behind the top of the lever bases.
Some use a bit of rubber that come with bike computers for mounting and glue it to the bars.

Or buy these.
http://ecx.images-amazon.com/images/I/31M-y97fU3L._SS500_.jpg
Cane Creek SCR-5compact. (http://www.treefortbikes.com/107_333222344071__SCR-5c-Compact-Aero-Levers.html)

I have these on one of my bikes -- does the job nicely for those with small hands.

digger
11-23-09, 04:57 AM
sweet, I'm sadly lacking on details as to how that was done. It looks like a rivet, but I don't exactly know. If you want guidance, I pulled that pic off this (http://blackmountaincycles.blogspot.com/) blog. Send him an email, he might be able to help.

I was able to come up with something this weekend. It's not that pretty but essentially I have some very thin aluminum hanging around the basement. This aluminum was from some wind chimes that were damaged in a storm a few years back. I kept the aluminum pieces that made up they chimes, which are between 12 inches to 18 inches long and about 1 inch diameter.

I cut off a section, shaped it to fit down inside the brake and once shaped properly I super glued it in. It's not that pretty, but I'm not going to file it for prettiness until my friend determines if she is happy with the reach.

There is some adjustablity in what I have done by slightly bending the aluminum. I think though that she will find the reach ok.

DannoXYZ
11-23-09, 12:20 PM
Remember that true short-reach brake-levers have a different pivot and leverage-ratio to pull the same amount of brake-cable with less lever-travel. This allows them to move the brake-caliper the same amount as regular levers. Regular levers pre-pulled with shims will not pull the same amount of cable with their reduced travel. You end up risking bottoming the lever against the handlebars before getting enough braking-force built up. If you shim a regular lever, you must adjust the cable so that the pads are as close to the rims as possible.

I've also had good luck with these levers. They're short-reach and pull more cable than normal, so no bottoming risks: Tektro RL520 ergo levers (http://www.jensonusa.com/store/product/BL307A00-Tektro+Rl520+Ergo+Brake+Levers.aspx).