Dore Westbury Mk2 drive pulley repair

This topic has 41 replies, 13 voices, and was last updated 17 November 2017 at 11:14 by Canobi.

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22 May 2017 at 09:32 #299115
Canobi
Participant
@canobi
Hi folks

Are there any Dore Westbury owners/builders out there who could offer some guidance/tips for taking the planetary pulley section appart?

It’s my first mill and I can’t seem to find much info on it. I didn’t know about the condition of the bushings till after I got it home, though after sticking a dial just about everywhere, I can at least say that they’re the only problem with it, a good clean, a new set of bushings and she’ll be right as rain again.

Here’s how the lower half looked as it was, you can see where most of the original bushings went, both sides had a build-up of flakes around the edges and in corners:

[URL=http://s1225.photobucket.com/user/Can-obi/media/Mobile%20Uploads/IMG_20170514_192835.jpg.html][IMG]http://i1225.photobucket.com/albums/ee395/Can-obi/Mobile%20Uploads/IMG_20170514_192835.jpg[/IMG][/URL]

It was easier to see how close things came to permanent damage, the one side looks to be worn down to almost nothing.

[URL=http://s1225.photobucket.com/user/Can-obi/media/Mobile%20Uploads/20170518_173438.jpg.html][IMG]http://i1225.photobucket.com/albums/ee395/Can-obi/Mobile%20Uploads/20170518_173438.jpg[/IMG][/URL]

[URL=http://s1225.photobucket.com/user/Can-obi/media/Mobile%20Uploads/20170518_173608.jpg.html][IMG]http://i1225.photobucket.com/albums/ee395/Can-obi/Mobile%20Uploads/20170518_173608.jpg[/IMG][/URL]

I searched for ages but couldn’t find out what the bushings were made of, I hazarded a guess at brass, but not 100% on that.

The lower half doesn’t look like it will present much problem as far as replacing the bushing goes, simple press out/press in job, but the planetary half is beyond me.

I’ve taken a step back from my usual “have at it” approach having discovered how scarce these casting are, so I’m in no hurry to do something brash this early into proceedings.

I removed the four small bolts on top after taking this pic, but it didn’t seem to do much:

[URL=http://s1225.photobucket.com/user/Can-obi/media/Mobile%20Uploads/20170518_171710.jpg.html][IMG]http://i1225.photobucket.com/albums/ee395/Can-obi/Mobile%20Uploads/20170518_171710.jpg[/IMG][/URL]

I’m guessing the four ?brass pins may have something to do with it, but how to deal with the thing is beyond me at the moment so any help would be most appreciated.
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22 May 2017 at 09:32 #32980
Canobi
Participant
@canobi
22 May 2017 at 16:04 #299183
toneless
Participant
@toneless
Hi.

I'm an owner of a Dore Westbury miller as well though I'm sorry to say not an experienced one -at least not yet-, so I can't answer your questions in detail.

It seems like yours is a MK1 model and I just had a look at the building instructions and the bushings are just referred to as "porous bronze bushes".

P.s May I suggest that you visit the yahoo dore westbury group where you can find plans and info on these versatile millers.
22 May 2017 at 16:47 #299186
Brian Oldford
Participant
@brianoldford70365
Posted by toneless on 22/05/2017 16:04:04:. . . . . . ."porous bronze bushes".. . . . . .

Would sintered bronze bushes (oilite) be a suitable substitute?

Edited By Brian Oldford on 22/05/2017 16:48:16
22 May 2017 at 17:43 #299193
Tony Pratt 1
Participant
@tonypratt1
I couldn't see the photos guess that's my fault, does one have to log into photo bucket? Anyway I made one of these beasts some 30 odd years ago, bushes were sintered bronze from memory, brass will not be any good, again from memory I think the gear[s] are held on by circlips.

Tony
22 May 2017 at 18:15 #299195
toneless
Participant
@toneless
Tony Pratt, here are the images in the order Canyon Wren posted them. You don't need a photobucket account, it was just the links that were not correctly inserted in the post.
22 May 2017 at 18:22 #299196
Canobi
Participant
@canobi
My apologies, wasn't sure how to attach the pics (was using android mode which didn't help).

Thank you for the replies gents, sintered bronze it is then, and I shall definitely check out the the yahoo group.
22 May 2017 at 20:02 #299215
Tony Pratt 1
Participant
@tonypratt1
Toneless,

Thanks, those pictures bring back happy memories of my build, actually nearer 40 years than 30, scary! I'm pretty sure they supplied the oilite bush [s] ready made & I had to degrease them to allow the Loctite to work.

Obviously oil fill again after fitting.

Tony
23 May 2017 at 00:04 #299251
toneless
Participant
@toneless
Canyon Wren, when you do repair your gearbox housing, please let us know. Also a couple photos of your DW would be nice.

Even though it now seems like a piece of machine history, it's still a very versatile and capable miller. Good luck having it up and running soon.
23 May 2017 at 00:33 #299252
Canobi
Participant
@canobi
I'll be posting progress and no doubt asking more questions for sure.

As requested, Here is my DW (I hope I've got it right this time)
23 May 2017 at 00:41 #299253
Canobi
Participant
@canobi
Damn! thought I had it then, hang on…

[IMG][URL=http://s1225.photobucket.com/user/Can-obi/media/Mobile%20Uploads/IMG_20170523_001719.jpg.html][IMG]http://i1225.photobucket.com/albums/ee395/Can-obi/Mobile%20Uploads/IMG_20170523_001719.jpg[/IMG][/IMG]

Edited By Canyon Wren on 23/05/2017 00:43:32
23 May 2017 at 00:47 #299254
Canobi
Participant
@canobi
Posted by toneless on 22/05/2017 18:15:49:

Tony Pratt, here are the images in the order Canyon Wren posted them. You don't need a photobucket account, it was just the links that were not correctly inserted in the post.

I would love to know how you did that, can't seem to make it work my end.

Edited By Canyon Wren on 23/05/2017 00:49:53
23 May 2017 at 00:53 #299255
toneless
Participant
@toneless
When you reply in a message, there is a palette of options on the top. You just have to choose the "image" icon, it's in the top row, third from the end. Insert the link and here you go…

P.s It looks to be a very nice Mark1 model… I love the handwheels, I dare to say, they look way better than the stock ones!
23 May 2017 at 01:08 #299256
Canobi
Participant
@canobi
Yep, right icon but I should have been using a direct link which I'm not used to using.

Here she is from the other side
23 May 2017 at 01:29 #299257
Canobi
Participant
@canobi
Not sure about old though, she's a whippersnapper next to my 1930s flat belt Grayson lathe ♡

Runout was an astonishing 1.4mm when I got her, managed to whittle it down to .1mm (.003 inch), Not bad for a total beginner and an old lathe.

Edited By Canyon Wren on 23/05/2017 01:29:55
23 May 2017 at 12:48 #299312
Ian S C
Participant
@iansc
Tony, it's best not to use Loctite on oilite bushes, the Loctite fills the space where the oil is supposed to be. The bushes are made slightly over size, and when they are pressed into the correct size hole the bore closes to the nominal size for the shaft, this is enough to retain the bush. If worse comes to worse, the interior of the bearing housing can be knurled to reduce the diameter, that's not always easy, or possible.

Ian S C
23 May 2017 at 13:05 #299318
Canobi
Participant
@canobi
This is all great info guys, Thanks

I found a perfect oilite for the base which is 1" x 1.1/8" x 1" bore, but no 2" with the same ID/OD. There's one with a 1.1/4" so may get that one and skim it to size if I can't find an exact match.
23 May 2017 at 15:28 #299343
Neil Wyatt
Moderator
@neilwyatt
How to post pictures, (including Photo Bucket):

http://www.model-engineer.co.uk/forums/postings.asp?th=103028&p=2
23 May 2017 at 21:12 #299393
Mike Crossfield
Participant
@mikecrossfield92481
Canyon

When I rebuilt my DW some years ago I replaced all the oilite bushes, and I sourced correctly sized parts at very reasonable prices from Ashley Power in Poole. Website at http://www.ashleypower.co.uk. They don't seem to list imperial sizes in their online store, but you can order them by phone.or email.

Hth

Mike
23 May 2017 at 22:10 #299396
Ian Skeldon 2
Participant
@ianskeldon2
Canyon can you let me have your contact details please, I have a Grayson and may want to ask some questions about it.

Thank you,

Ian
24 May 2017 at 00:08 #299407
Canobi
Participant
@canobi
Posted by Mike Crossfield on 23/05/2017 21:12:43:

Canyon

When I rebuilt my DW some years ago I replaced all the oilite bushes, and I sourced correctly sized parts at very reasonable prices from Ashley Power in Poole. Website at http://www.ashleypower.co.uk. They don't seem to list imperial sizes in their online store, but you can order them by phone.or email.

Hth

Mike

That's awesome, thank you so much 😀
24 May 2017 at 00:12 #299409
Canobi
Participant
@canobi
Posted by Ian Skeldon 2 on 23/05/2017 22:10:35:

Canyon can you let me have your contact details please, I have a Grayson and may want to ask some questions about it.

Thank you,

Ian

PM sent
5 June 2017 at 11:34 #301241
Canobi
Participant
@canobi
Quick update and a thank you to Mike again.

Ashley Power were very helpful and I have two sets of correctly sized bushings on their way to me for a very reasonable price

I also picked up a set of circlip pliers and will get stuck into tearing the pulley down when the bushings arrive.

I have a question to all DW owners, I removed the Jakobs chuck that came with the mill and found the morse shank had been shortened and retapped.

Measurement of bore depth came to 2.1/4″ and regular length shank are too long,Is this normal, or something specific to my mill?

The way I see it I have two choices, take the quill out and re-bore it, or modify any MT2 arbours I want to use in the mill.

Not as keen on attempting the former myself using such an old lathe but the latter would be in the realms of doable.
5 June 2017 at 12:39 #301251
Philip Rowe
Participant
@philiprowe13116
Canobi,

Just checked my DW spindle and I find that any of my morse taper tooling which all measure around 2.5" long fit my spindle without any problems. I do wonder if your spindle nose may have been modified (shortened) at some time in the past. I machined my spindle when I built the machine to the D/W drawings to suit the Myford spindle thread. Mine measures including the shoulder with the spanner flats 1.5".

Phil
5 June 2017 at 13:09 #301256
Canobi
Participant
@canobi
Posted by Philip Rowe on 05/06/2017 12:39:02:

Canobi,

Just checked my DW spindle and I find that any of my morse taper tooling which all measure around 2.5" long fit my spindle without any problems. I do wonder if your spindle nose may have been modified (shortened) at some time in the past. I machined my spindle when I built the machine to the D/W drawings to suit the Myford spindle thread. Mine measures including the shoulder with the spanner flats 1.5".

Phil

Thanks for checking Pillip, I was wondering the same thing, the pulley only has a stack of three as opposed to six I've seen on most and the quill thread, while 1.125" x 8tpi is Witworth, not UNF.
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