Unusual place for a threaded boss

[Headgardener]

My Dawes Horizon has a threaded boss on the inside of the drive side chainstay near the dropout and I can't see what is for as anything attached there would foul the wheel. There is no coresponding one either futher up the chainstay or on the opposite stay. Also my hybrid doesn't have one so could this be a mistake by Dawes? Any help would be gratfuly recieved.

 

[Velorum]

Ive never seen one - can you post a picture?

 

[Rhythm Thief]

Might be for screwing a small bolt into for hooking the chain over when the wheel is removed. Seems an odd way to go about it though, my old Raleigh just had a small pin brazed on to do that job.

 

[Steve Austin]

is it a chain hanger? like this one?

 

[Ian H]

That's on the seat-stay not the chain-stay. But perhaps that's what's meant.

 

[Velorum]

My Claud Butlet Majestic had a little stud for holding the chain in about the same place - not a braze on though.

 

[Jonathan M]

Steel frames have small holes in the seat & chain stays, to let the welding gases out, but we're talking small. Perhaps someone in the Dawes factory cocked up and either made this hole too bid and "filled" it with a threaded boss?

 

[Globalti]

Hole for a bolt for a drum brake torque arm?

 

[Gareth]

My Partner's Quantum bicycle (15 speed derailleur) has a threaded boss in the same place; it's used to fix the full length chain guard to.

 

[Headgardener]

Right contacted Dawes and they say it's fitted to enable the frame to be mounted on a support for welding and spraying. Also just discovered a third set of bottle cage mounts under the downtube near the BB, might the ideal place to keep my bike matainance bottle when I get it.

 

[MacB]

Right contacted Dawes and they say it's fitted to enable the frame to be mounted on a support for welding and spraying. Also just discovered a third set of bottle cage mounts under the downtube near the BB, might the ideal place to keep my bike matainance bottle when I get it.

bottle under down tube, what a good idea

 

[Piemaster]

Some mtbs have bosses there for mounting crudcatcher style mudguards.
My sons carrera gryphon has bosses on the inside of the seatstays for mounting of a rack. Needed there as its disc braked so making it a bit too wide for mounting a rack on the outside as normal.

 

[Wobbly John]

Sounds too low down to be for a crud-catcher. I've got some on my touring-ified MTb and use them for a meths bottle to fuel the stove.