Re-cutting/Boring out a stem! Is this possible ??

[Ian Raleigh]

Reading & learning as we go along matey.

Thanking the guys on here who have put in idea's and will report back when the adjustable reamer arrives.

 

[klaw71]

A bit late now, but have you tried Hilary Stone, he has a 26.0 on his website for £49.
http://www.hilarystone.com/stems2.html

 

[Ian Raleigh]

A bit late now, but have you tried Hilary Stone, he has a 26.0 on his website for £49.
http://www.hilarystone.com/stems2.html

I spotted that Stem yesterday mate but has loads of marks on it, so not good enough for the bike,
but if I did get it, The anodising would be stripped back and polished up then re-anodised.

 

[john]

Removed a load of unhelpful comments from this post.

 

[Jonny69]

Removed a load of posts and we're STILL on 7 pages? Crikey!

A hand reamer ought to stay square in the stem. It's tapered slightly at the end by about 0.5mm so you can get it in and started, so you should be able to get it in an unclamped 25.4mm hole. I would probably pop it in a vice and go halfway, flip it round and finish the job. Use plenty of WD40 to stop it binding. Your adjustable reamer will make easy work of it and was probably cheaper than a fixed size reamer - they're always expensive

 

[oonaff]

Its certainly a good topic, and advice from lots from all angle's . even a cone reamer getting a mention
there i read and a good old fashioned half round file and some bench fitting.
i suppose if one were to use a pillar drill or milling machine then the stem must be held in a good jig
making it perfectly level and thus the internal sides of the hole parallel to the reamer.
Im not sure how good it would be kind of freehand with a drill ,may be an increase of 0.2 upwards hopefull using the existing length of the hole as itself a guide with a steady hand .
it might well reach the required 26mm with a 25.8 mm reamer bearing in mind the concentricity
of the chuck and indeed its shaft. be good to try some practice ones first

 

[TGR]

I have been PATIENTLY awaiting an update.

^^ hint, hint, hint

Richard

 

[47p2]

Will be a simple task with an adjustable reamer. Might be an idea to do a practise run on an old bit of tubing first to get the feel for it. Also when adjusting the reamer do so in very small increments

 

[Ian Raleigh]

be good to try some practice ones first

I was advised that mate but even crappy old 600 AX stems are pretty expensive
so it was an one off job for me and I've been successful in doing this job.

I have been PATIENTLY awaiting an update.^^ hint, hint, hint Richard

Its done Richard! Plase have a nob'

The adjustable reamer arrived today so I set out 'shitting myself' but did a good job and the bars
are an excellent fit as is the 26mm wedge which is inside, Having no access to a vice! The next
best thing for me is my old Raleigh so I threw off the bars/stem and attached the 600 ax stem
into the front forks and wedged the front wheel and began reaming away and doing a bit at a
time, reaming by hand seems so crude and watched the blades skim off the alloy then jam.
skim off the alloy then jam and this lasted for three hours, turning the reamer every two skims
from left to right until the hole was exactly 26mm.

Sorry I have got any further pictures but my friggin camera deleted most the pictures :roll:

Remember how 'in your face' the stem and bars are! A least I'm not hiding anything.

 

[The History Man]

Result! He who dares Rodney!