Taper reaming

[Martin LParticipant @martinl]

Hi,

First post so hello to all.

I have a 3/32" pin I need to change to a tapered pin, not sure what size I need.?.

Will a 7/64" do or do I need to go to 1/8" size for pin and reamer.

Thanks for any info.

[Martin LParticipant @martinl]

Taper pin/reamer for 3/32″

[EmgeeParticipant @emgee]

Martin

As you imply the small end of the reamed hole will need to be greater than 3/32" so you need to check a tapered reamer chart sizes for a suitable reamer.

Emgee

Quick search found these, looks like metric has wider choice of sizes.

https://www.ebay.co.uk/itm/HSS-Taper-Pin-Reamer-Metric-Imperial-2mm-2-5mm-3mm-3-5mm-4mm-4-5mm-5mm-1-8-1-4-/264938005021?var=0&mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338268676&toolid=10044&customid=CjwKCAjwmeiIBhA6EiwA-uaeFZ56PLdzljjnlfYGFrtjwwB0l7C0nyPfSgOyuVj_fn1OZxtamzii7RoCJDoQAvD_BwE

 

Edited By Emgee on 16/08/2021 13:59:11

[not done it yetParticipant @notdoneityet]

The taper is probably more important than the actual size (as long as greater than the current hole). A tapered pin with a 2.5 mm minimum could suffice. Different taper to imperial, mind. The wide end of the tapered pin (so the overall length of it) needs to be catered for.

[Phil H1Participant @philh196021]

Misread your post

Edited By Phil H1 on 16/08/2021 14:23:32

[Martin LParticipant @martinl]

Thanks for the info/help

Changing the 3/32" pin's that hold the crank on the shaft of a Stuart twin Victoria , just so they are a lot easier to remove.

Looks like 1/8" pin and reamer will be the one to go with, taper pin needs to cover 3/4" depth, going with a 1" pin OK?

[Grindstone CowboyParticipant @grindstonecowboy]

Just to digress..

I've never used a tapered reamer, so is the correct procedure to assemble the parts and then ream the hole in both at the same time? I'm assuming it must be, but never been told this or seen it written anywhere.

Thanks,

Rob

[Martin LParticipant @martinl]

I'm the same never used a taper reamer before, so I'd like to know as well Rob. I'll be going through cast/steel/cast, think I'll have a trial run on steel first

[roy entwistleParticipant @royentwistle24699]

Ream both parts assembled together. If more than one pin is needed on one shaft they should both be reamed from the same side.

[Grindstone CowboyParticipant @grindstonecowboy]

Thanks Roy

[Martin LParticipant @martinl]

Posted by roy entwistle on 16/08/2021 15:42:14:

Ream both parts assembled together. If more than one pin is needed on one shaft they should both be reamed from the same side.

Thanks for this.

[not done it yetParticipant @notdoneityet]

When I’ve fitted mine it has been after loctiting parts together. Choice of loctite grade is up to me. If it is intended to be permanent, a stronger grade is chosen.

I value my reamers so tend to step drill to reduce the metal that needs to be cut away with the reamer. But I’ve yet to pin anything under an inch diameter…

[Nick HughesParticipant @nickhughes97026]

Here you go:-

[Martin LParticipant @martinl]

Great info thanks, love those old vids always clear concise information.

Really looking forward to trying this now.

[Grindstone CowboyParticipant @grindstonecowboy]

+1 on what Martin said.

Thanks

Rob

[Jon LawesParticipant @jonlawes51698]

Funnily enough, all these years I've just realised I've never used a taper reamer either, but will almost certainly need to soon. Thank you.

[Nigel McBurney 1Participant @nigelmcburney1]

Be careful when reaming with a tapered reamer,the flutes quickly fill with swarf so withdraw the reamer to clear the swarf more frequently than when using parallel reamers. use a lubricant when reaming,sluble oil,lubricating oil,or in tough materials Rocol helps,

[michael howarth 1Participant @michaelhowarth1]

What a superb video as posted by Nick. No excess verbiage or ego that accompanies modern offerings.

Mick

[Ady1Participant @ady1]

Posted by mick H on 17/08/2021 09:36:39:

What a superb video as posted by Nick. No excess verbiage or ego that accompanies modern offerings.

Mick

I noticed that modern vids can be hugely verbose and they ALL do it, especially the USA vids

I think that the longer your page is viewed- the more advertising there is- and the more income you make

So there's tons of useless fluff and a snippet of useful at the end

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Ady1 on 17/08/2021 09:58:37:

Posted by mick H on 17/08/2021 09:36:39:

What a superb video as posted by Nick. No excess verbiage or ego that accompanies modern offerings.

Mick

I noticed that modern vids can be hugely verbose and they ALL do it, especially the USA vids

I think that the longer your page is viewed- the more advertising there is- and the more income you make

So there's tons of useless fluff and a snippet of useful at the end

.

I’m sure you are right, Ady

But also note that this film would have been an expensive production compared with the typical video ‘tutorial’

MichaelG.

[CirclipParticipant @circlip]

"I noticed that modern vids can be hugely verbose and they ALL do it, especially the USA vids"

MANY generated on this side of the pond can challenge that.

Regards Ian.

[Bill DawesParticipant @billdawes]

Yes excellent video, concise and precise.

Agree about many modern equivalents, not all to be fair, amateur ones usually more to the point. USA ones can be awful, many I have watched have been like a QVC programme, waffling on a and on about the same thing ad nauseum. Guess it is to do with sponsorship.

I hasten to add I don't spend hours watching people selling tacky jewellery on QVC, honest.

Bill D.

[John HaineParticipant @johnhaine32865]

Ah well, shoorting video is free, you had to pay for film!

[Author]

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