Jump to content
 
  • entries
    138
  • comments
    193
  • views
    57,865

Backward Progress Has Been Achieved


Dave at Honley Tank

359 views

It may be old age, it may be winter doldrums (S.A.D. and all that!) it may be no more than the thought of the cold. That bit's not true because the workshop bit of Honley Tank is actually the cosiest room on the property - 3kW of heating available in a room about 11' x 8'!

 

What ever it is I'm not managing to raise the desire to get stuck into some modelling, and forcing my self to go out there is not the best situation to achieve high levels of modelling skill.

 

This week I've had only one modelling day, (that's about 5-6 hours at most) and the progress has been in the wrong direction.

I got out the electronic callipers to check clearance at the splashers, and my eyes had been correct; clearance was virtually non-existent! The questions were "why?" and "how to overcome?".

 

The "why?" was two fold. My planning had been for the splasher front to sit on the running plate, but I had fitted the splashers with their front extending through the running plate. Secondly, I had the splashers as being fabricated in 0.010" sheet and when I made them I had used 0.020". So the inside face of the splasher fronts were all 0.020" too close to the boiler.

 

So the splashers with which I had struggled when I fitted them, now needed to come off, and the required unsoldering was likely to cause unsoldering of adjacent bits. Also I would need to fabricate a completely new set of splashers but in thinner material. None of this was conductive towards a feeling of pleasure! The splasher slots in the running plate would also need a little widening.

 

My failing memory did actually come good here, because I suddenly remembered that I had in the past used a modelling blow torch rather than a soldering iron in unsoldering situations, - that old "very hot iron-quick-in-quick-out" syndrome but, with a flame much hotter than any soldering iron, much more likely to succeed. It did! Those D****D splashers are off and no collateral damage; just a few seconds taken to undo a few hours work!

 

I now needed to start on some new splashers but first I should check my drawing to see if I had erred there too; - if I'd incorrectly drawn the splashers then those errors would have been carried through to the model. Almost needless to say I had (probably) drawn the splashers with too small a radius. Back then to the drawing board.

 

The J10 driving wheels are quoted as 5'1" dia. and that equates to an across-flange dia. of 5' 3.5" or 21.17 mm in 4mm scale. Yes! another drawing error. I had drawn the splashers at 21mm dia. Another error on my drawing that needs correction. If only 'Isinglass' had drawn the J10!!!!!!

 

Just a minute though; I'm not using my home-made wheels on this one, they are Gibson, and a 5'1" model is not available. These wheels proved to be 20.6 across flange but that still makes a 21mm diameter splasher too small to be certain of sufficient clearance. What a stupid old codger!

 

I've just finished cutting three 24 mm disks of 0.012" nickel-silver in the lathe. I had no 0.010" in stock but the 0.002" extra should not be a problem because the 24mm is actually the inside dia. of the splashers. Another five hours or so should have me back to where I was last week.

 

Thanks to "Pannier Tank" and "Alastair" for their comforting words. Yes I'll keep smiling because it is funny really, just not so funny when you first find out.

4 Comments


Recommended Comments

Well done, Dave

It's amazing what difference a few thou make...

 

I think your humour is a result of your having the skills and being able to rectify your 'mistakes'. 'Another five hours or so' is only a day in modelling time for you. For the rest of us (certainly me!), the pain of failure takes time to diminish; and so the humour is a more distant phenomenon. I've been having problems with a Jinty... it has a nice Mashima (here comes the Flaming Lips as an earworm) and P4 Ultrascales, but the previous owner used the Hornby coupling rods, and they slop around something chronic on the wonderfully precise U'scale pin. Changing the rods would be an easy job, but the P.O also superglued the crankpin nuts on... Needless to say (but I'm saying it anyway..) the things will not come undone, and so I've already sheared one crankpin, and still have 5 to go. My humour definitely went AWOL during this (last weekend) so now the chassis sits in a a margarine tub in a somewhat dishevelled state, and awaits the return of something approaching nominal levels of tolerance and humour.

 

Keep up the good work. I'm still trying to get AJ's to work; no fault of your bespoke bending jig (for which I am very grateful...)

 

Cheers

 

Jan

Link to comment

Hi Jan,

Nice to hear from you.

Those bunged up or super-glued nuts; - try holding a hot soldering iron on the nut for a few seconds before unscrewing. Cyano-acrylate does not like high temps and tends to give up the ghost when it sees a hot iron. Same applies to araldite, but that will stick again when it cools.

Those A.Js: I supose you have tried the odd swear word? By odd I mean occasional but unusual ones work best. Mind you there's a book I could recommend but the author's name excapes me for the moment.

Regards,

Dave

Link to comment
Those A.Js: I supose you have tried the odd swear word? By odd I mean occasional but unusual ones work best. Mind you there's a book I could recommend but the author's name excapes me for the moment.

 

Dave, I know some very odd swearwords (not just the 'routine' ones like Churchw*rd, C*llet, Hawksw*rth etc :) ). Suffice it to say that I have exuded a few expletives in my tiny train travails - not all coupling-related, it has to be said...

 

Ah...That book. Excellent work. I have a plan to reduce my library to reflect my horizonal retreats, but that one will stay. Very useful - not just for pictures showing that it can be done... :)

 

Top tip on the soldering iron front; especially as I look for any warmth in my railway room at the moment! As always, thanks for your help.

 

Cheers

 

Jan

Link to comment

Jan,

No problems; when any one of us can not offer advise to another, even though only an e-aquantance, then it really is time to take up stamp collecting. Next time the tiny trains cause you ill-humour then think of me; thats always good for a laugh!

TTFN

Dave

Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...