What's the thingy I need to fix this thread?

[map]

Technical term thingy.
Basically thread for mirror is buggered.
So need to rebore/clean and then hopefully reuse the original mirror.
Trouble is I can't remember the names of the stuff to do this.

Any advice appreciated.

Thanks.

https://i1113.photobucket.com/albums/k503/mapidd/Biking/Scooters/2012-06-17-081.jpg


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...and the whirlwind is in the thorn trees, it's hard for thee to kick against the pricks...
Gibbs, what did Duckie look like when he was younger?

[G]

It's a 'tap' you need - a 'die' would do the same if you had a male thread (stud, bolt, etc).

Depending on how far down the thread is knackered, it's possible you could need a 'bottoming tap', as normal ones are tapered for starting new threads, so won't cut right to the end if it's closed.

[woll]

A tap... what size i dunno lol
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Current Bike- Suzuki DRZ400 SM K6
Previous bikes - Derbi Senda Xtreme50r, Honda CBR 125, Kawasaki ZZR 250, Yamaha DT125R, Suzuki Bandit 600, Gas gas ec 250, Honda CBR600FW
Damaged spleen, damaged kindey, 2 popped lungs, 2 broken ribs, broken face, broken wrist and 5 back fractures... remember kids walls hurt

[Fairies attack]

If the thread is stripped you need to drill it out to a bigger size, tap it then put a helicoil in.

If the thread is just a bit dirty, then you will need to just clean it with a tap. You will need to use a no.3 tap/plug, since no.1 & 2 are for making a new thread and with only really get the top few threads due to their shape.
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Ariel Badger said - Ever tried Chinese preserved (100 year) eggs? Man are they rank, like eating fart flavoured snot.

[Drake]

just make sure you use the right drill size if using a heli coil
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was: derbi senda, aprilia sx125, nsr250 mc16, cagiva mito, cb600 hornet now: mk1 bandit, KR1S, landrover series 3 light weight 2.5 petrol, 5speed box

[map]

Just to clarify I do know about taps (and dyes).

However, a workshop was trying to tell me about something they could screw into the original. I think this made the hole bigger so like a tap then. They would then screw something into this new rethreaded bit/hole so that you could then screw the original mirror back into (10mm mirror) this new bit.

I hope that makes sense.

It's the name of the bit that gets screwed back in I don't know about (I've led a sheltered life obviously).
So that'd be a helicoil then.


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...and the whirlwind is in the thorn trees, it's hard for thee to kick against the pricks...
Gibbs, what did Duckie look like when he was younger?

[Ariel Badger]

They are talking about Helicoils. I prefer to make my own insets by tapping out a grub-screw and loctiting that in. I have had helicoils pull out before now.
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Bikers make great organ donors, get 115 on your licence today.

[G]

All the inserts you get will require first drilling out, then re-tapping for the bigger thread, then the insert being put in.

A lot of people like 'timeserts', which are similar to what Ariel describes he makes - as they are solid.
Either way, it can be worth using some kind of glue on the outer threads, so the insert is well held in.

For a mirror, just cleaning it up with a tap may well do it.

[map]

[Fairies attack]

The hole in the picture looks like it is blind, which means the bottom of it is capped off.

You will be lucky if have it drilled and helicoiled without having to go through the bottom.

You can try it, but I dare say it you will have to drill right through to get a decent thread when tapping it for the helicoil.
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Ariel Badger said - Ever tried Chinese preserved (100 year) eggs? Man are they rank, like eating fart flavoured snot.

[stinkwheel]

Remember, some mirror mounts have a reverse thread to stop them unscrewing when the wind blows on them.

Check this before you buy inserts.

Incidentally, I've found it cheaper to buy a bag of inserts, a drill and a seperate tap to go with them off ebay than it is to buy a kit containing them. Although it's not a bad idea to get a full kit the first time because it'll contain the inserting tool, tang breaker and instructions.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[groovylee]

[Walloper]

[bodger]

[G]

[Hetzer]

[reckless_b]

may well be cheaper and easier to buy a second hand replacement mount
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40 years on the road on and sometimes off bikes with a very recent OFF

[Fizzer Thou]

I would look at the reservoir cap screws at the same time
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Just talk bikes.What else is there?

Always have a 'Plan B'

[groovylee]

well spotted that man
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Past - 1988 honda revere 600, 1996 kawasaki gpz500s, 1999 Yamaha R6

Current - 2002 Aprilia RSV1000R & 1999 Kawasaki ZX6R

[Johnser]

Would it be worth trying to thread the mirror up a bit further? Often the threads in the hole go deeper than they are used. you may only need to expose a few more turns of thread in the hole to get a good grip on things.

Also, for cleaning up threads like this, a cheaper (and quicker as you dont have to go out and find a tap) way is to make your own by slitting an undamaged bolt with a hacksaw and running it in and out. You wouldn't realistically be able to use this to tap a new thread, but it works well to clean up old/cross threaded holes.

Same can be done with a nut slit in one place and held tight with mole grips on male threaded sections.

[fraggie]

[Fairies attack]

[groovylee]

[groovylee]

[bodger]