Forum sponsored by:
Northumbrian Footplate mounting.
| Chris | 04/08/2009 11:25:44 |
| 87 forum posts 13 photos | Hi fellow builders,
I have discovered what may be a mistake with the footplate drawings re the front mounting holes.
These holes are shown as being 21/8" from the back of the plate, if this is the case they miss the mounting rail which is centred at 2" from the back.
As you will doubtless have guessed I discovered this in metal not on paper!
Now do I make a new foot plate or fabricate a wider mounting rail?
Tony made considerable play in his first article about his mates in the 21/2 Association checking his drawings. Perhaps he should go back to them for a second reading.
Chris. |
| David Clark 1 | 04/08/2009 12:37:24 |
 3357 forum posts 112 photos 10 articles | Hi There
Two locomotives have been built from these drawings.
Can you double check your dimensions?
regards David
|
| David Clark 1 | 04/08/2009 16:21:36 |
3357 forum posts 112 photos 10 articles | Hi There
I have just looked at the drawing.
Front holes in footplate appear to be 3/8 back, 1/4 + 1/8. That means 2inch from back.
Is this what you mean?
regards David
|
| David Clark 1 | 04/08/2009 16:30:37 |
3357 forum posts 112 photos 10 articles | Hi There
I see what you mean now, the two inside holes at 17/8 apart.
Does look like an error.
I suggest you try using a bit of 3/8 x 1/4 bar for footplate support and drilling holes to suit or fill the footplate holes with a ctsk rivet and redrill the holes slightly closer together.
I will talk to Tony with a view to publishing a correction.
regards David
|
| JasonB | 04/08/2009 16:31:19 |
 25215 forum posts 3105 photos 1 articles | I think Chris is right the 2 3/8" is to where the plate narrows and the holes are shown at 1/4" back from this point which puts them in the wrong place. The whole plate is 2 1/2" front to back (2 3/8 + 1/8) so 2 1/2 less 3/8 (1/8 + 1/4) is 2 1/8". Its the holes that are on 1 7/8" cts not the ones near the edge.
I think you said that the drawings had been redrawn for the ME articles, so the ones that the author had checked may have been copies of his originals.
Jason
PS any news on the cylinder position query yet?
Edited By JasonB on 04/08/2009 16:33:09 Edited By JasonB on 04/08/2009 16:33:26 |
| David Clark 1 | 04/08/2009 17:07:16 |
3357 forum posts 112 photos 10 articles | Hi There
I have a copy of the original drawings that are to scale.
The cylinder pitch is 6inches to centreline and runout is 3/8 down.
regards David
|
| JasonB | 04/08/2009 17:56:30 |
25215 forum posts 3105 photos 1 articles | Posted by David Clark 1 on 04/08/2009 17:07:16:
The cylinder pitch is 6inches to centreline and runout is 3/8 down.
I was asking about the cylinder in relation to the holes for item 10, see the last half dozen posts in the "first project" thread.
If drawn using the dimensions on the ME Drawing the six cylinder mounting holes come out further back than shown.
Can you confirm that the 9/16 dimension mid way along the top is correct as it is drawn far larger than the 9/16 bolt spacing and looks more like 3/4, if it were 3/4 this would put the cylinder fixing holes and holes for item 10 all in the right place.
Maybe the original drawings could be added to the articles section.
And while I'm on there does not seem to be any length given for the firebox support, it is just shown as a dotted outline on the frame drawing and the "1/8" clear locate from frame" note about the central hole is where the dimension should be.
Jason
Edited By JasonB on 04/08/2009 18:01:10 Edited By JasonB on 04/08/2009 18:03:46 |
| Chris | 04/08/2009 20:13:06 |
| 87 forum posts 13 photos | Hi David and Jason,
Thanks for your interest in this problem. If my observation has saved someone else a problem I am happy.
My comments about checking the drawings were in no way a slight on your checks as editor David. I wouldn't know where to start reading and checking someones drawings, a point made clear by my cutting metal before finding the small error.
Thanks,
Chris |
| David Clark 1 | 04/08/2009 21:20:54 |
3357 forum posts 112 photos 10 articles | Hi There
Yes, measures 3/4inch.
I will talk to Tony tomorrow.
regards David
|
| JasonB | 05/08/2009 07:29:18 |
25215 forum posts 3105 photos 1 articles | Thanks David
Although I am not building this loco (I became involved when another member pm'd me with a query) It seems a shame that a project aimed at beginners has so many errors/missing data.
This is likely to put new model engineers off rather than encourage them particularly as it looks like anyone who has made a start on their frames will have to scrap them as there is no easy way to add 3/16 to their length.
I hope that these revisions will be published in ME ASAP to prevent anyone without net access from making thes eerrors.
Jason |
| David Clark 1 | 05/08/2009 10:25:35 |
3357 forum posts 112 photos 10 articles | Hi There
I have not said it is incorrect but that it scales at 3/4inch.
regards David
|
| JasonB | 13/08/2009 07:23:47 |
25215 forum posts 3105 photos 1 articles | See here for the revised drawing |
Please login to post a reply.
Magazine Locator
Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!
Sign up to our Newsletter
Sign up to our newsletter and get a free digital issue.
You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy
Latest Forum Posts
- *Oct 2023: FORUM MIGRATION TIMELINE*
05/10/2023 07:57:11 - Making ER11 collet chuck
05/10/2023 07:56:24 - What did you do today? 2023
05/10/2023 07:25:01 - Orrery
05/10/2023 06:00:41 - Wera hand-tools
05/10/2023 05:47:07 - New member
05/10/2023 04:40:11 - Problems with external pot on at1 vfd
05/10/2023 00:06:32 - Drain plug
04/10/2023 23:36:17 - digi phase converter for 10 machines.....
04/10/2023 23:13:48 - Winter Storage Of Locomotives
04/10/2023 21:02:11 - More Latest Posts...
- View All Topics
Support Our Partners
Shopping Partners
Subscription Offer
Latest "For Sale" Ads
- Reeves** - Rebuilt Royal Scot by Martin Evans
by John Broughton
£300.00 - BRITANNIA 5" GAUGE James Perrier
by Jon Seabright 1
£2,500.00 - Drill Grinder - for restoration
by Nigel Graham 2
£0.00 - WARCO WM18 MILLING MACHINE
by Alex Chudley
£1,200.00 - MYFORD SUPER 7 LATHE
by Alex Chudley
£2,000.00 - More "For Sale" Ads...
Latest "Wanted" Ads
- D1-3 backplate
by Michael Horley
Price Not Specified - fixed steady for a Colchester bantam mark1 800
by George Jervis
Price Not Specified - lbsc pansy
by JACK SIDEBOTHAM
Price Not Specified - Pratt Burnerd multifit chuck key.
by Tim Riome
Price Not Specified - BANDSAW BLADE WELDER
by HUGH
Price Not Specified - More "Wanted" Ads...
Get In Touch!
Do you want to contact the Model Engineer and Model Engineers' Workshop team?
You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.
Click THIS LINK for full contact details.
For subscription issues please see THIS LINK.
Digital Back Issues
Donate
Register
Log-in
Model Engineer Magazine
- Percival Marshall
- M.E. History
- LittleLEC
- M.E. Clock
ME Workshop
- An Adcock
- & Shipley
- Horizontal
- Mill
Subscribe Now
- Great savings
- Delivered to your door
Pre-order your copy!
- Delivered to your doorstep!
- Free UK delivery!
All Forum Topics > Locomotives > Northumbrian Footplate mounting.