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Member postings for Springbok

Here is a list of all the postings Springbok has made in our forums. Click on a thread name to jump to the thread.

Thread: Did you make one of these at school or as an apprentice?
04/10/2011 05:08:56
Wow does that take me back started school (senior) in 1956 and our teacher taught me the lathe, case hardening and makeing one of these. these were the days before "Elf and safety" struck and the kids now use balsa and prit sticks. SAD........
 
Thread: Oil grooves in piston valves
27/09/2011 23:12:49

Hi Garry

Firstly if you look at the drag beam there should be holes for the vacume pipes etc; this is shown in drawing 8

Watch out for your running boards before you assemble them there are slots for the oil lubricator, and other items. BUT not convinced this is where it should be doing more research. The steam injector pipe is at the wrong angle but not a lot we can do about this if we have purchased reeves etc; castings.

Other comments;

The cut outs in the main frames for the boiler blow downs need to be about 1/2" further up and about 1/8" further forward. The reamed 3/16" hole near the front coupled wheel should be 7/32" . There are 2 different boiler drawings in circulation. The one you want has the girder stays on top of the fire box wrapper attaching to the outer shell of the boiler. Check the thread sizes of the boiler fittings agree with the thread sizes for the boiler bushes. The steam manifold is shown twice with discrepancies in the measurements

One correspondent tells me that the bogie frames are too short on the drawings. Worth checking before you cut metal.
From an email.
Someone else (sorry, I forget who it was) said the following:
The boiler is pitched .375" too high, this makes the cab height out of scale. On the full size engine there is virtually no gap between the frame and boiler. The cab and running boards are approx .75" too wide as is the tender. I have seen one built using Martins drawings but scaled correctly, a big improvement on mine. Have no fear though, it is fairly easy to build and steams and pulls like a good'n. If you have an old set of drawings you may find a stretcher trying to fit between the frames where the middle tender wheelset sits. This corrected on later drawings.

I am going to try and get mine running on air next week so everything crossed

regards

Bob

27/09/2011 21:43:05
Hi Kwil
looks a good source will keep it in mind
Thanks
 
Hi Garry
Please look at
it will give you a pic of what it should look like
also try
 
Will post tomorrow all that I have found so far
 
Bob
27/09/2011 06:56:21
Oh please watch out for loads of missing holes not in the drawings and it was april 28th 1960.
 
bob
27/09/2011 06:39:09
--
Still trying to work out how to put a pic on this thread
 
Quote 28th April P517 The oil grooves being put in with an old hacksaw blade high-speed for preference before the final overall cut is taken.
 
I case hardened my blade but that could be OTT.
 
I have a complete set of the articles (photocopies) as our club which is over a 100 years young has a complete set from vol 1 of MEngineer in our library. I have decidied to scrap the reverser design that Martin Evans put in his drawings for I think simplicity and will be makeing an more accurate representation. could I refer you to Chris Vines free ebook which refers to this item It is worthwhile looking at his Bongo.
 
Please keep in touch as one B1 builder to another.
 
Bob
 
 
26/09/2011 04:00:37
Will send you a pic and details now off to do a bit to pay the bills. only spotted your posting by accident
 
regards
 
Bob
Thread: Fine cuts on Brass
25/09/2011 04:28:30
Firstly are you useing a chinese mini lathe. If so check the jib strips that there is no play with the revs you mention it certainly sounds like one. The next Q is what type of cutting tool are you useing.
 
Sorry to hear about your problems and hope all will be well soon.
 
Bob.
 
Thread: A Challenge - How Would You Machine This Part?
25/09/2011 04:06:34
A friend from Japan sent me this Email
 
Legarding what you are looking at
I can make thousands of these items velly cheaply and incluse a fully operatonal manual.
 
toung in cheek
 
smile it could get worse she indoors could ask you to do some work in the house.........
Thread: Painting and finishing models
23/09/2011 05:58:48
Sugest you get Chris Vines book
"How not to paint a train"
very worth reading
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