LCGB Forums

Hello,

I have a SX150 but someone has tapped out the rim threads to a larger size. Is there anything available on the market that will reduce the size of the thread. Something like a helicoil. I don't really want to weld up and re-tap if I can help it.

Thanks for the help.

Lee

ive used a pop rivet before , with varying degrees of success . fit the pop rivet then tap out the hole in it

I know it's a bit of a bodge job but I have filled the hole with liquid metal , let it set then drilled and tapped it. Still OK a year later and I have removed the screw several times since

You could try Riv-Nuts.they are similar to a pop rivet but come pre-threaded.Various sizes are available,you might have to drill the headset lug suit tho.The riv-nut will be a neater solution.

^ also done that with araldite

Are the threads ok as someone may have tapped to 3.5 mm and used electric socket screws. The heads are slightly larger but if you have a bench grinder the heads can be reduced to fit in the rim rebates. I've just done a GP headset with 3 mm Rivnuts but as there isn't a lot of alloy on the headset, I turned the outsides down a bit.

I have used riv nuts worked a treat

Really appreciate all your comments..... Thank you.

Lee D

ian i.o.w wrote:I have used riv nuts worked a treat

I've done one of my headset rim screws with a RivNut. I fitted it from the back so that it pulls towards you ( if that makes sense ) as you tighten the rim screw. Not that it moves, because I Loctited the RivNut in and then put some Quicksteel ( chemical metal ) in any gaps. Talk about belt and braces, I can now chain my scooter to a lamp post from the rim screw !

I brought some aluminum welding rods from eBay for £5, then used a blow torch to melt it in to the hole, then re tapped the thread afterwards... perfect...

I've never heard of them before. I guess the drawback for some applications is that they don't fit flush?