Cutting down a quill stem's vertical height?

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deliquium
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Cutting down a quill stem's vertical height?

Postby deliquium » 20 Dec 2017, 7:09pm

I have a brand new Nitto Technomic NTC-225 stem. Unfortunately it's too tall for the 22½" frame it's intended for.

How easy would it be to cut it down to 190mm using no more than B&D Workmate and a hacksaw?

Given that it requires a ~ 45º angle cut?

Anyone done it? How critical is the interface with its mating steel wedge?

(plain Nitto Technomics don't appear to be available in NTC-190 varieties)
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Si
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Re: Cutting down a quill stem's vertical height?

Postby Si » 20 Dec 2017, 7:19pm

Do you have enough thread on the bolt, or the tools to cut more?

Brucey
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Re: Cutting down a quill stem's vertical height?

Postby Brucey » 20 Dec 2017, 7:49pm

the stem appears to have an aluminium wedge which means that the angle is probably more critical than it would be with a steel wedge. It is best to dress the cut face with a file so that it is nice and smooth, as well as perfectly angled.

I've cut down quite a few stems, but usually fairly knackered old ones rather than expensive new ones.

BTW the threads on the bolt are often rolled (rather than cut), which means that if they are too short, you will need a replacement bolt, or the extant one shortened and remade by welding.

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mattsccm
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Re: Cutting down a quill stem's vertical height?

Postby mattsccm » 20 Dec 2017, 9:05pm

If you have enough thread, easy. 2 minutes with hacksaw and file.

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breakwellmz
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Re: Cutting down a quill stem's vertical height?

Postby breakwellmz » 23 Dec 2017, 9:47am

deliquium wrote:I have a brand new Nitto Technomic NTC-225 stem. Unfortunately it's too tall for the 22½" frame it's intended for.

How easy would it be to cut it down to 190mm using no more than B&D Workmate and a hacksaw?

Given that it requires a ~ 45º angle cut?

Anyone done it? How critical is the interface with its mating steel wedge?

(plain Nitto Technomics don't appear to be available in NTC-190 varieties)


I`ll swap you for a shorter one!
What horizontal length have you?

peetee
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Re: Cutting down a quill stem's vertical height?

Postby peetee » 29 Dec 2017, 6:52pm

I cut a stem down by using a wooden guide that was drilled through with a wood bit and then cut at a 45 degree angle. I pushed the stem through the hole and cut it to match this angle having first checked the centre bolt thread was long enough.
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