cyclus head tube reamer acme thread size ?

[NBC]

hi all,

does anyone know what the thread size is for the acme nut / rod on the cyclus head tube reamer ?

i think it's a trapezoidal (30 degree metric) thread of 16 x 3mm, though i was wondering if anyone might have made parts for one and knew the actual dimension ?

thanks

nathan

[Mark Kelly]

Looks like ISO Sq 16 x 3. Sq = Square thread, not trapezoidal.

This is confirmed by the width of the thread crests which is 1.75mm, it would be 0.75mm for an ISO trapezoidal thread because thread height is 0.5 x P and the trapezoids are at a 30 degrees, so they take up 0.75mm of pitch each, leaving 0.75 for the crests and the roots.

BTW, no such thing as a metric Acme thread, Acme is a Septic standard.

[afwalker]

bump, I've ordered one and should get it next week from Ceeway.
So are you Nathan, making your tool to use those cutters?
I found some cutters is the States at the loose screws site that's going out of business:(
cheers
andy

[NBC]

i've been asked to see if i can get some PF30 reamers made to fit that handle, and i might need to have a shorter shaft made, though i'll try and avoid that if i can !

i've got the handle already myself, it's a good buy for the money, just was unsure what the thread was

thanks to both andy and mark :)

nathan

[afwalker]

13906060888_3b89de11e6_m.jpg
Only took a couple days to cross the pond:)
pretty square threads
cheers
andy
i hate the new flickr, where's the damn like to the pic??????

[surlypud]

A long while back I tried to determine this for my cyclus HT reamer. I was going to use a longer threaded rod so I could ream at 450 mm HT (dutch style cargo bike). Thanks for posting this information!

[Gattonero]

Ah, I'd be more interested in a long press for Moulton headtubes, there is well worth

[NBC]

if it's something that'd be useful, i can more than likely have a couple made ?

NBC

[abbeyQ]

BTW, no such thing as a metric Acme thread, Acme is a Septic standard.

McMaster Carr sells metric Acme bits fwiw. McMaster-Carr

[Mark Kelly]

McMaster Carr sells metric Acme bits fwiw. McMaster-Carr

I think McMaster Carr sells metric trapezoidal threads and mislabels them as "ACME". Since the thread angle is only one degree different that's a forgivable sin.

[afwalker]

Zoro is lots cheaper, Metric Steel Threaded Rod by VALUE BRAND - Threaded Rods by Zoro Tools Industrial Supplies
cheers
andy

[Mike Mcdermid]

hi all, does anyone know what the thread size is for the acme nut / rod on the cyclus head tube reamer ? i think it's a trapezoidal (30 degree metric) thread of 16 x 3mm, though i was wondering if anyone might have made parts for one and knew the actual dimension ? thanks nathan

Buy yourself a thread guage set ,about a fiver you will use it and use it and use it Dead handy for confirming stuff like threads

[cjellmoney]

This thread has been so very close to containing the obscure information that would be infinitely useful. How about the threads on Park and Cyclus or other HT reamer/facers? Some info here would be oh so helpful to mix and match cutters. A shim could be easily made to fit a cutter with a larger ID while turning the ID of a hardened steel cutter would be a deal breaker. I will measure/attempt to identify my icetoolz handle after it stops raining...

[Jonathan]

This thread has been so very close to containing the obscure information that would be infinitely useful. How about the threads on Park and Cyclus or other HT reamer/facers? Some info here would be oh so helpful to mix and match cutters. A shim could be easily made to fit a cutter with a larger ID while turning the ID of a hardened steel cutter would be a deal breaker. I will measure/attempt to identify my icetoolz handle after it stops raining...

Welcome Cjell. I've been a follower of your divide races. Thanks for the entertainment!

[cjellmoney]

Thought i would add my findings... I purchased the 44mm Park Reamer and the over-sized facer and it installed without issue to my ice toolz handle. Identical tool mount diameters. Reamed perfectly with no chatter. Press fit like it should. If more depth than the reamer/spacer/facer setup provides was needed the reaming and facing would need to be done separately as the ice toolz handle provides just mounting length for the reamer-spacer-facer, no more. Good enough for a King external cup i know..

[e-RICHIE]

Thought <cut>

Please add a first and last name to all your posts here in the Frame Forum as per the user guidelines.
Thanks atmo.

http://www.velocipedesalon.com/forum...rum-36866.html

[Jonathan]

His name is cjell money.