Is there any way to retrofit a dropout adjuster to non-adjustable dropouts? Or, alternatively, is it possible to buy shims of varying sizes which can be affixed in the dropout to achieve the same effect?
Any advice gratefully received!
Adjusting non-adjustable dropouts
Re: Adjusting non-adjustable dropouts
Not sure - It would greatly depend on what frame it is.
Are you planning a Single Speed / Fixed conversion ?
Are you planning a Single Speed / Fixed conversion ?
Re: Adjusting non-adjustable dropouts
If you mean the adjusting screw that's in some horizontal dropouts, there are various types of adjuster available, such as the Surly Tuggnut or DMR chain tugs.
On the other hand if you have vertical dropouts, it would be new frame time (or at least take the frame to a framebuilder), and a request for sliding or rocker dropouts
On the other hand if you have vertical dropouts, it would be new frame time (or at least take the frame to a framebuilder), and a request for sliding or rocker dropouts
Re: Adjusting non-adjustable dropouts
Like these, not sure where you would get them nowadays. I've got some similar nylon ones somewhere from a 1970's raleigh, they had a worm screw and a thumbwheel to screw the worm in and out. had a quick look but couldn't locate them.
you could try a diy solution like a short nut and bolt and a couple of washers, fit behind the hub so the axle locknuts but up against them.
you could try a diy solution like a short nut and bolt and a couple of washers, fit behind the hub so the axle locknuts but up against them.
At the last count:- Peugeot 531 pro, Dawes Discovery Tandem, Dawes Kingpin X3, Raleigh 20 stowaway X2, 1965 Moulton deluxe, Falcon K2 MTB dropped bar tourer, Rudge Bi frame folder, Longstaff trike conversion on a Giant XTC 840
Re: Adjusting non-adjustable dropouts
Found one. They just locate in the dropout.
At the last count:- Peugeot 531 pro, Dawes Discovery Tandem, Dawes Kingpin X3, Raleigh 20 stowaway X2, 1965 Moulton deluxe, Falcon K2 MTB dropped bar tourer, Rudge Bi frame folder, Longstaff trike conversion on a Giant XTC 840
-
- Posts: 8
- Joined: 26 Feb 2017, 12:50pm
Re: Adjusting non-adjustable dropouts
The frame is a Dawes Horizon Twin - but I'm concerned that the drag brake (an Arai Drum) is going drag needlessly without a little fettling. And a dropout adjustment is just the fettling it needs.
Re: Adjusting non-adjustable dropouts
IceCyclist wrote:The frame is a Dawes Horizon Twin - but I'm concerned that the drag brake (an Arai Drum) is going drag needlessly without a little fettling. And a dropout adjustment is just the fettling it needs.
I am not quite sure what your logic is there; the brake doesn't exert an especially large torque that would tend to move the wheel in the dropout, so once it is in the right place it ought to stay there, unless the track nut isn't tight enough.
Usually the wheel movement that is most likely to occur (with near-horizontal dropouts on a tandem) is that the RH side of the axle tries to slide forwards in the dropout when you are using low gears. You don't need much of this before the tyre is rubbing on the chainstays....
However if the reaction arm is forced sideways where it is mounted on the chainstay, that can cause the drum brake to rub. It is usually a question of using spacers on the chainstay mounting or (with care) putting a 'set' into the reaction arm.
Note also that if the wheel pulls forward on the RHS the brake reaction arm will be pushed sideways and this may cause a brake rub. So be careful not to associate the wrong things as cause and effect.
cheers
-------------------------------------------------------------------------------
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
Re: Adjusting non-adjustable dropouts
rjb wrote:Found one. They just locate in the dropout.
image.jpg
I like the look of those - do you know where I can get some ?
-
- Posts: 8
- Joined: 26 Feb 2017, 12:50pm
Re: Adjusting non-adjustable dropouts
Thanks Brucey - I'm sure that you're right. I'm probably being over cautious. Nevertheless, the devices found by rjb look ideal - I'd very much like to buy some!