Shredded thread on fork lowers?

MTB noob

Just a quick question, can i possibly get a replacement lower for my fork (Suntour Raidon X3 LO) because my upper mount for my brake has been stripped of thread.

This definitely wan't due to over-tightening because I have a small allen key which will never pull out more than 5Nm of torque and it has only been removed 3 times.

I also haven't done anything to the fork that would void the warranty (apart from removing the lowers for cleaning but that won't be related to this problem)

Thanks

snoopsmydogg

Helicoil would be a cheaper option

ride_whenever

how old are they?

Generally stripped threads are not covered as it is usually ham fisted assembly that causes it and you'll be very hard pressed to prove it arrived like that.

Do you have the cash on hand for an upgrade? that might be worth a punt.

Also, I wouldn't helicoil for lowers.

MTB noob

The bike was only 5 months old which i wondered whether it was a factory problem. Also i wouldn't have enough to replace it.

supersonic

To find it was stripped you must have removed the bolt though? Then refit?

Helicoil, as above, is the best way.

cooldad

Absolutely no help, but IS mounts rule.

The Rookie

Except when they crack (yes seen that) which leaves you no better off.....

Giraffoto

This may or may not be a daft suggestion:

Can you either get a new mount fabricated and welded on, or weld a bit more thickness around the mount to accommodate a helicoil?

cooldad

The Beginner wrote:

Except when they crack (yes seen that) which leaves you no better off.....

Yeah, single speed steel rigid is the only sensible solution.

cooldad

Giraffoto wrote:

This may or may not be a daft suggestion:

Can you either get a new mount fabricated and welded on, or weld a bit more thickness around the mount to accommodate a helicoil?

Presumably magnesium alloy lowers - a serious bugger to weld.

MTB noob

Yeah they're magnesium alloy and do you know what M size the bolts are for brake mounts? It's to make sure I get the right heli-coil size

supersonic

M6.

Giraffoto

cooldad wrote:

Giraffoto wrote:

This may or may not be a daft suggestion:

Can you either get a new mount fabricated and welded on, or weld a bit more thickness around the mount to accommodate a helicoil?

Presumably magnesium alloy lowers - a serious bugger to weld.

On the plus side, you'd have plenty of light to work by. I'd always assumed they were some sort of aluminium alloy - I should obviously pay more attention to the spec sheet.