Garden Railway Forum

Summer is usually dedicated to my other (non-steam) hobbies, so there was long silence... but recent "bad" weather meant that I had some time in the workshop. Here is the result - frame brazed together (I have used Sifbronze No1 and oxy-propane): https://c2.staticflickr.com/2/1839/30260247...

I am seeking assistance from the collective wisdom.... I am currently working up these drawings and my need is of information on water connections, I will have three connections with the feed pipes being 1/8 " OD with 1.70mm ID and the "Bypass Valve" will masquerade as the tender han...

This particular 12BA socket started life as stainless M5 Allen key grub screw (which uses 2.5mm Allen key). OD of the socket head is 3.6mm, which means it can get into some very tight spaces. Proper 12BA A/F should be 2.3mm (Nuts and Bolts across flats is nominally 1.75 x Major Diameter) but those 1...

Just gone through this whole thread from the beginning (having joined recently, I am still catching up )
Definitely added to my favourites
Full of useful ideas - thank you!
I particularly like your boiler - exactly what I have in mind for my loco.

That's cleared it - thank you.
I am following your thread with interest because I want to use similar burner in my loco

daan wrote: ↑Tue Apr 03, 2018 5:42 pm ... This is how it looks with the roof in position.

She looks beautiful (can't be "it", must be "she" )

...The air holes are started by filing across them then drilling a hole which is open up until the burner looks OK ... Tony, I am puzzled by the particular way you do the air holes :scratch: Is it because the filing improves performance in some way? or is it just to make hole drilling easier? Hope ...

You are far too generous guys
Glad you enjoy it! - thank you for your kind comments.

Today, spent a lot of time tapping the holes in hornblocks: https://c1.staticflickr.com/1/890/39379927510_9eccc1c54b_o.jpg An exercise in patience :lol: , with occasional clenched buttocks :mrgreen: 32 holes tapped, 16 more to do on rear hornblocks, plus 12 for keeps... I reckon I will be sick of sm...

There is a potential flaw in this magnet suggestion...
daan is making the cab etc from stainless - if it is austenitic stainless than it is non magnetic?

Thank you @ FWLR :) Managed to get some work done... front hornblocks temporarily secured to frames for drilling (and later tapping 10 BA) At this stage axlebox opening in the hornblocks are undersize (metal on), with final machining to size to be done after the frames are brazed and hornblocks are ...

As far as I know BS93 tolerance for 10BA is 1.675 max and 1.605 min.
So the numbers you quote are within tolerance.
My 10BA (both old stock from un-known source and latest from EKP) measure 1.65
I haven't checked them all, just a few.

Bolts from EKP arrived next day - happy customer. They are 2.5mm AF instead of the standard 10BA being 3mm AF. Not much, but to me - worth it (I know emphasis here is on having fun rather than rivet counting :lol: or hex sizing :P . but I like it, so...) Here the comparison: https://c1.staticflickr....

Yes indeed - this is one way, particularly where appearance of finished part matters and one off castings are not available or not economical.
Some parts are easy to fabricate, others not so...

Thank you for your encouragement guys :thumbright: Will try not to dissapoint with updates, but they are likely to be less frequent than some here... It is not ready made design, so I am sure there will issues that will hamper the progress, plus I am very slow worker :oops: Next will be the hornbloc...

I plan to braze frames together (as recommended by LBSC), using assembly/brazing fixture: https://c1.staticflickr.com/1/799/40134244785_6e7c19dfda_o.jpg and from another angle: https://c1.staticflickr.com/1/798/40134244155_162e25c102_o.jpg Of course, it wouldn't make sense to produce this jig just f...

That's how far the CAD design got, before I have decided to start cutting metal: https://c1.staticflickr.com/1/794/40985643532_6a6aebe3bf_o.jpg Drilling 10BA holes using Bridgeport Sensitive drilling chuck helps... :thumbup: Marking out is there just a sanity check https://c1.staticflickr.com/1/804/...

It's really freelance, Fowler inspired :) Using Fusion 360 for CAD modelling. Imported manufacturer's drawing on page 136 in Brian Wilson's book into CAD: https://c1.staticflickr.com/1/796/27156551068_472156e2f6_o.jpg Two front (coupled) axles are to be equalised and rear (driven) axle is to be spru...

pandsrowe wrote: ↑Sat Feb 24, 2018 9:23 am...mechanical lubricators I made for my 1" Minnie traction engine and 3 1/2" Spencer are only about 20mm square...

I would love to see more details of your lubricators, please.
Photos, drawings, etc, etc, ...

Hydrostatic Dazza wrote: ↑Wed Feb 21, 2018 8:10 pm ...I drilled .050mm oil holes again , just for kicks and giggles...

That made me giggle indeed
Decimal point with a mind of it's own