repairing water cage bosses

[jackthelad]

Hi guys was wondering if this is the kit to use to repair a very loose water bottle cage hole housings to the frame.The screw is totally loose with no grip at all

http://www.toolbox.co.uk/sealey-trm5-thread-repair-2960-110439

any help appreciated

contacted the lbs and they recon cost to repair about £15,thought maybe buy this kit for future problems as well as the one I have at the moment

 

[Angelfishsolo]

When I have spoken to mechanics about such Tap and Die kits they are usually dismissive of them, especially when you are increasing the hole or decreasing the thread size by a small amount. A better (Though potentially far more expensive) option seems to be Heli-Coiling. I am considering getting this done on my front disk brake boss after the thread was partially stripped due to a bad crash some time ago.

 

[Night Train]

Hi guys was wondering if this is the kit to use to repair a very loose water bottle cage hole housings to the frame.The screw is totally loose with no grip at all

http://www.toolbox.c...air-2960-110439

any help appreciated

contacted the lbs and they recon cost to repair about £15,thought maybe buy this kit for future problems as well as the one I have at the moment

A kit like that, if good quality (helicoil), should be fine for repairing threads. I use them when needed on all manner of things and have also used them to add steel threads, up to M10 size, to wooden parts.

The only thing to be careful of is that you have enough clearance in the frame to drill and tap the hole and to insert the tread while keeping it all square to the boss.

Another way I have seen threads in frames instead of a welded on boss (which is what I assume you have) is a rivet nut or rivnut in the frame tube.

The rivnut is like a large hollow pop rivet with an internal thread.

It is inserted with a special tool like a rivet gun but with a threaded part for the rivnut.

Remove the old rivnut with a drill and a sharp chisel and replace with a new one.

Obviously if the rivnut is anywhere other then the seat tube you will have the loose insert rattling about inside the tube.

 

[Zoiders]

Night train is correct, it's nothing to do with helicoil kits which are for use in billet and cast aluminium or steel - ie - solid lumps of it that will take a threadm - not thin walled tubing.

It's a job solved by using the rivnut gun, yes it might run to £15 if they have to drill the old ones out and fit new ones them as they are quoting you for the cost of two nuts and maybe 30 minutes fiddling at a push, it probably only needs the tool stickinmg in and a few squezzes to make the original riv-nut bite in all honesy as it was most likely not done properly on the assembly line.

 

[jackthelad]

Thanks for the replies guys and making me wiser to what is involved.I am ok paying the lbs,but if it was a job I could have done myself with little cost outlay then i might have went down that route.