Search found 1392 matches

by Will L
Sun Dec 09, 2018 5:49 pm
Forum: Exhibitions
Topic: The Christmas Model Railway Show - Manchester 2018
Replies: 17
Views: 1415

Re: The Christmas Model Railway Show - Manchester 2018

Too much shunting on Black Lion Crossing? ... So, I am truly sorry if the operation of the layout was not up to your expectations, but for me, I had a ball………… Certainly no need to apologies, and I agree the operations did at the very least ensure that all the facilities of the layout did get used ...
by Will L
Wed Dec 05, 2018 4:02 pm
Forum: Guest Book
Topic: DCC Concepts Rolling Road
Replies: 9
Views: 1051

Re: DCC Concepts Rolling Road

Philip Hall wrote:Andy, same for me, will make contact when I work out how to, as you’re in the Guest Book, not a member!

Philip

Andy and Proto 87 Stores can be reached at
contact@proto87.com
his website is
http://www.proto87.com/
Andy is in America
by Will L
Mon Dec 03, 2018 1:59 pm
Forum: Tim V
Topic: Tim V's workbench
Replies: 376
Views: 91316

Re: Tim V's workbench

Thanks for the link Noel, the last few post now make some sort of sense
by Will L
Mon Dec 03, 2018 1:39 pm
Forum: Exhibitions
Topic: The Christmas Model Railway Show - Manchester 2018
Replies: 17
Views: 1415

Re: The Christmas Model Railway Show - Manchester 2018

Black Lion Crossing is an awesome layout - based on the Wrexham area where I spent alot of my childhood and student days so know the prototypes well. If you go to the exhibition, it's worth spending alot of time at this layout, it's well worth seeing and highly recommended viewing. Gareth Agreed it...
by Will L
Sun Dec 02, 2018 10:03 pm
Forum: Exhibitions
Topic: The Christmas Model Railway Show - Manchester 2018
Replies: 17
Views: 1415

Re: The Christmas Model Railway Show - Manchester 2018

Black Lion Crossing is an awesome layout - based on the Wrexham area where I spent alot of my childhood and student days so know the prototypes well. If you go to the exhibition, it's worth spending alot of time at this layout, it's well worth seeing and highly recommended viewing. Gareth Agreed it...
by Will L
Sun Dec 02, 2018 6:57 pm
Forum: Chassis and Suspensions
Topic: CSB Fulcrums
Replies: 11
Views: 567

Re: CSB Fulcrums

...For a four-coupled loco, this also has the advantage of more or less ensuring that the driving axles take equal weights. Yes but only if and when the loco is sitting level. I do agree that we are most unlikely to have any greater need for secondary springing on a bogie than the prototype and the...
by Will L
Sat Dec 01, 2018 10:08 pm
Forum: Chassis and Suspensions
Topic: CSB Fulcrums
Replies: 11
Views: 567

Re: CSB Fulcrums

...I am assuming that it is the horn blocks which ensure the vertical movement you are describing as far as the driven axles are concerned? The axles themselves have the ability to pivot giving independent springing action to each wheel? In theory, though quite how independent opposite ends of a 1/...
by Will L
Sat Dec 01, 2018 7:40 pm
Forum: Chassis and Suspensions
Topic: CSB Fulcrums
Replies: 11
Views: 567

Re: CSB Fulcrums

...If there is no weight acting on the CSB then surely this height will relate directly to the heights of the anchor points in the frames ...and the deflection which you have drawn relates to the spread sheet calculations ...... dependent upon the C of G and the relative positions of the anchor poi...
by Will L
Sat Dec 01, 2018 12:22 am
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17464

Re: Crab Comet conversion

"Le Corbusier" PMed me querying me exactly what I meant by ... I have a concern by the fact that that the effective height from the rail head to the CSB fulcrum needs to be the same for the bogie to rubbing plate assembly as for the driving wheel axle bearing block assembly. ... and asked ...
by Will L
Fri Nov 30, 2018 4:36 pm
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17464

Re: Crab Comet conversion

...Will I assume you'd agree that springing of the bogie as in Mike's Scot means some weight is being taken. Although my original intention was to have the carrying wheels just going along for the ride, and while certainly they aren't necessary to support the loco weight as on the prototypes, my fe...
by Will L
Fri Nov 30, 2018 4:19 pm
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17464

Re: Crab Comet conversion

.. I can't help feeling that there must be a way to mount the bogie itself so that it is sprung off the main CSB? ....Hopefully in such a way that it can be calculated as a simple 0-6-0 with the percentage of weight allocated to the Bogie truck via the spread sheet in line with the loading requirem...
by Will L
Thu Nov 29, 2018 12:19 am
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17464

Re: Crab Comet conversion

Having made a number of equalised bogies, though always using compensating beams, I would imagine that using csb's on bogies might be difficult. Most locomotive bogies have a wheelbase of 6' 0 - 7' 3" so 24 - 29 mm in 4 mm scale. In that distance and especially as there is very little space, b...
by Will L
Mon Nov 26, 2018 12:37 pm
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17464

Re: Crab Comet conversion

Continued post household chores. Of course once you had bogies in play, our American fiends discovered that the 4-4-0 configuration gave considerable advantages when trying to deal with less than perfect track as well as allowing a much larger boiler to be mounted over two coupled axles which provid...
by Will L
Mon Nov 26, 2018 10:59 am
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17464

Re: Crab Comet conversion

...For Clarification purposes .... could someone define the difference between a 'pony' and a bogie truck ... and where each is used on a locomotive? and why the difference? - both I assume are there primarily for weight distribution. :thumb A pony truck has 1 axle and a bogie (normally) 2. The use...
by Will L
Wed Nov 21, 2018 10:49 am
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17464

Re: Crab Comet conversion

[ I have come to the conclusion that there is almost never any practical purpose in getting pony truck wheels to carry any of the loco's weight, we don't have the axle weight constraints that the prototype has to live with and made such things necessary. Will I am interested in this conclusion. Ian...
by Will L
Tue Nov 20, 2018 11:50 pm
Forum: Steam Locomotives
Topic: Crab Comet conversion
Replies: 169
Views: 17464

Re: Crab Comet conversion

... 1. Suspension. I have learned about the problems of individual coil springs, having intended originally to use them as per the instructions. Retro-designing compensation added complexity but was an elegant and effectively simple solution. One of the reason why I have tended to proselytise the u...
by Will L
Sun Nov 18, 2018 1:02 pm
Forum: Tools and Techniques
Topic: Best Rolling road
Replies: 14
Views: 1430

Re: Best Rolling road

I've had very mixed experiences with rolling roads. I've had two different designs over time and neither was successful for me in the long run. This was perhaps to do with the way I tried to use them. Mostly I was testing bare chassis in the early stages of construction. This means the chassis is ve...
by Will L
Thu Nov 15, 2018 4:10 pm
Forum: Track and Turnouts
Topic: Radius Testing - Practical Experiments.
Replies: 60
Views: 3301

Re: Radius Testing - Practical Experiments.

The Class 113 bogie takes the loco framing with it as it swings - but the loco framing isn't fixed to the loco on the model, it has become part of the bogie. It is a trick, a modelling bodge, a trompe d'oeil but completely invisible to all intents and purposes. By doing it this way there is no issu...
by Will L
Tue Nov 06, 2018 6:04 pm
Forum: Wagons
Topic: Sprung couplings
Replies: 10
Views: 839

Re: Sprung couplings

David B wrote:...I like the idea of the leaf spring as this could be incorporated to spring the buffers as per prototypes. Has anyone tried doing this?..


Didn't PC models (remember them) do a version of this? The "leaf spring" was etched from phosphor bronze.
by Will L
Tue Oct 30, 2018 11:44 pm
Forum: Signals and Control Systems
Topic: Mk II Lever Frame - Rolling the quadrant plate
Replies: 5
Views: 415

Re: Mk II Lever Frame - Rolling the quadrant plate

JFS wrote:No phoney illusionism here! Told you it was easy - even in the absence of Will's thigh - it just needs a bit of self confidence.


Exactly
by Will L
Tue Oct 30, 2018 11:36 pm
Forum: Jeremy Suter
Topic: GWR Steam Railmotor Chassis
Replies: 163
Views: 22592

Re: GWR Steam Railmotor Chassis

I thought it looked a bit long. 4mm makes all the difference! As far as the motor bogie is concerned any idea what radius curves the P4 version can cope with now? A 4 wheel bogie like this will, of itself, go round sharper curves than any P4 modeller is likely to want to lay. The constraint is not ...
by Will L
Sat Oct 20, 2018 5:15 pm
Forum: Starting in P4
Topic: Making a Start - The Peak District Midland / Monsal Dale pre 1903
Replies: 887
Views: 72152

Re: Making a Start - The Peak District Midland / Monsal Dale pre 1903

I am really just trying to understand how the left hand brake is applied... As I understand things the main rod linking to the brake actuator pulls the vertical blade at the top to the right. I am assuming this blade pivots around the position I have arrowed as the pivot. This pulls the right hand ...
by Will L
Sat Oct 20, 2018 11:47 am
Forum: Starting in P4
Topic: Making a Start - The Peak District Midland / Monsal Dale pre 1903
Replies: 887
Views: 72152

Re: Making a Start - The Peak District Midland / Monsal Dale pre 1903

Can't find your pivot 1 on your drawing. However. The bar which has your pivot 2 marked has another pivot at the other end where it attaches to the wagon frame. When you include that in it all works.
by Will L
Sun Oct 14, 2018 10:16 pm
Forum: Starting in P4
Topic: Making a Start - The Peak District Midland / Monsal Dale pre 1903
Replies: 887
Views: 72152

Re: Making a Start - The Peak District Midland / Monsal Dale pre 1903

If you mount them in the bearing carrier with the plane of the curvature at right angles to the plane of the carrier, and solder them in so they can’t turn, the wire will be effectively strait. Thanks Will, I have soldered the wire in as I find the carriers very flimsy and was worried about fatigue...
by Will L
Sun Oct 14, 2018 4:15 pm
Forum: Starting in P4
Topic: Making a Start - The Peak District Midland / Monsal Dale pre 1903
Replies: 887
Views: 72152

Re: Making a Start - The Peak District Midland / Monsal Dale pre 1903

... The first is to do with the Bill Bedford sprung W irons. The guitar wire threads through the base of the waisted bearing carrier and then is located on either side in a pilot hole in the etch. The wire is not equally straight ... some sections having a slight curvature. This means that when all...

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