Scalefour Forum

Ni-Silver will expand about 15% more than Steel. For temperature difference of 10 DegC then for a 500mm long rail the gap should be 0.08mm for Ni-Silver and 0.07mm for steel based on the above criteria. It's a linear relationship so double the temperature range double the gap likewise the rail lengt...

FPLs normally have a cover to protect the FPL so you can't actually see it.

regards

Alan

jon price wrote:thanks steamraiser.

The nylon printed are 3x the price of the the acetal (?cast). Is nylon better?

Not really you get two pairs of nylon for £12 and the acetal is £2.88 for one, which is £11 odd for the two pairs.

Regards

Alan

I see you have abandoned the interlaced timbers of the original?

regards

Alan

BryanJohnson wrote:The clubrooms are in an old what?

I've been called one but I've never been in one!

Regards

Alan

In general the Midland painted metal bits Venetian Red (an iron oxide based paint - as per the above photo - as it was cheap and hard wearing) and wooden parts tended to be a light cream colour such as Denby Cream. Paint technology late 19C was such that colours were based on natural pigments (such ...

And is the fret saw a hand saw or a mechanically driven saw?

regards

Alan

As a Midland Railway follower I don't need them - Economic Facing Point Locks are your answer!

regards

Alan

The estimated gap between these two lockbars is about twenty feet more than, say, an M7 hauling a 3-set of LSW 56-footers. That would mean that, as the last bogie clears 13 Lockbar, 14 Lockbar would be free for no more than the time it takes for the M7 to cover that twenty foot interval. Acceptable...

Hello Howard, Can I just ask one dumb question: When going through the 'pulls', is the sequence: locks, switches and then signals? (See, I really know very little about this.) There are thankfully no distants to contend with. All the best, Colin You set and lock the route. Depending how the locks w...

For those who have difficulty swivelling their head around:











Regards

Alan

Hello Guy, The puzzle is how to fit all the required signalling and switch control into a 20-lever frame! There ought to be an outer home I suppose, but it starts getting complicated. Alan, The signal at 17 would be off when passed, but that was not clear in my post. I was trying to imagine what co...

Colin Parks wrote:Hello Noel,

Thanks for the clarification of the operation conditional yellow signal. Would that signal then allow a train to depart from the headhsunt onto the running line up to signal 3? I shall amend the plan and see if I have got it right.

Colin

When OFF yes.

regards

Alan

Having built the original lever frame and just recently built the new frame I can tell you that the new frame is far more robust than the original.

regards

Alan

Porcy, thanks for the info from the hunslet drawings. Alan. Yes the original axles are 2.36mm and fit smoothly through the bearing which I've tried to measure and believe it to be 2.40mm, the Gibson axles measure 2.46mm. Would I need a straight/parallel reamer as the bearing is just under 8mm long?...

Hi a couple of questions regarding the Hornby J94. The Hornby model has its drive set with left hand leading or atleast the version I have is, and the DJM model appears to have right hand lead, I know a few different companies built the J94s so I was just wondering which is correct or is it both bu...

When you say "Exactoscale track and turnout kits" does that mean just the complete moulded track bases or does it mean the individual chair mouldings?

regards

Alan

Howard, Great stuff, nice to see the instructions! BUT, where do you get your 1.4mm dia brass or N/S wire (for mechanical drive take-off if the optional locking is not to be fitted)? I've had a quick trawl, but can't find a supplier. Also, is it essential to use 8 BA, or could a metric be used? reg...

Jeremy Suter wrote:To all those interested in the price for Howard's units
The Lever Frame will be £26 and the Locking Frame will be £34. Stock should be available at Scalefour North.

And will they be available from the Stores thereafter?

regards

Alan

4.7 R would have the first two bands as YELLOW, VIOLET. Form what I can see in the photo the first band is RED - suggesting first number is 2.

regards

Alan

Alan Gibson does 10 spoke in three diameters including 3' - 11/2"

regards

Alan

The Mazak will continue to self destruct and in doing so will expand. Your repair will be short lived and has the potential to damage your body moulding into the bargain (if it hasn't done so already).

regards

Alan

This might help: http://www.rmweb.co.uk/community/index.php?/blog/1672/entry-16869-snitzl-works-snitzl-investigates-pentroller/ regards Alan Thanks Alan for that which I know about and have downloaded a while back. At a quick glance one can be deceived into thinking it includes the Pentroller circu...

This might help: http://www.rmweb.co.uk/community/index. ... entroller/

regards

Alan

A couple of friends and myself have recently bought toggle latches of this type sold on ebay. As you can see they are adjustable which means that when fitted the pressure exerted between adjoining baseboards can be adjusted. I have a layout with 'standard' toggle latches, but that requires the appl...