Scalefour Forum

All very helpful but to be clear, is the target deflection 0.5mm in either direction, i.e. 0.5mm up and 0.5mm down? Down restraint is of little consequence, in fact the Bill Bedford J72 chassis has(had) hooks in the frames rather than knobs, and bearings that are circular with the sides machined fl...

I am currently getting parts together to build my first csb chassis & i have a few questions. I have been looking on the forum & the clag website & its like wading into a minefield of information with a lot of it going over my head. Have you found this page yet? http://www.clag.org.uk/b...

Ah I see what you mean. For us r/c lot we can control that from the TX if we so wish. More complicated in DC/DCC I guess, without having an actual switch. It may not be that simple yet, Nick. It depends on the options in the next Rxs from Micron. There are switch and toggle options on the 6x series...

I hope an LSWR/horsebox specialist can help me, please? The far end from the groom compartment features a series of half-etched circular depressions, which do not appear on any drawings or photos I can find. What are these circular features, please? Many thanks, Steve I had a trawl through the Bart...

I remember that 5v was the supply for TTL logic circuits.... Another thought on that subject - turntables. There are a number of 5 volt motors with gearboxes on eBay, and the control logic of those with pushbuttons could be effected with 5 volt TTLS logic chips. Alternatively, a radio receiver coul...

If only we could all start again, given where electronics has gone, I'm sure 5 volt battery powered radio control would just be the natural way to go. If Only. But Will, surely the same could have been said - and was on E4um - about CSBs a decade ago! (Don't mention the editor, Basil..) And the sam...

You might even have persuaded me to consider fitting pick-ups, since you what you've developed requires neither charging socket or switch. More pros, the pickups won't need to be ultra-reliable like 'live' ones, just one wheel each side will do. It would be preferable in this case to be able to mon...

Excellent work Ted! You might even have persuaded me to consider fitting pick-ups, since you what you've developed requires neither charging socket or switch. Where can I get some of those tiny bridge rectifiers from? Lots to think about.. Thanks Nick, I found the Schottky bridge rectifiers on eBay...

I remember that 5v was the supply for TTL logic circuits.... Now why would you remember that Ivan? (rhet) You are right of course, and thanks for the idea. The original TTL was going out of fashion when I joined that industry, trouble shooting it was a pain as a faulty input could pull down a corre...

Those who think that CSBs are a step too far, may not expect to see any of this in the Snews... It seems to me to be a logical progression from radio control and single battery cells, given the ubiquitousness of 5 volt USB chargers for smartphones, smartwatches, iPads, MP3/4 players, remote speakers...

The leaf springs on 1950's and earlier wagons are not soft and act more like a shock absorber, hence the noise on joints and crossings. Gordon A Sorry to be so picky, Gordon, but it is the springs that are the shock absorbers, and the friction between the leaves that do the damping. The rust betwee...

I agree with those who advise to avoid 'compensation'. In my experience, with relatively light weight 4 wheel wagons, rigid but square works as well as, if not better than, having one axle rocking especially if that axle is leading over small radius pointwork. I would suggest trying one wagon with a...

The 2mm Association rail is too thin (across the head) for narrow gauge. You could look for PECO code 40 rail which gives a much better section for narrow gauge rail. Thanks Tim, I wasn't intending to buy rail from the 2mm SA, but there are other bits that would be useful. I was hoping to use the S...

If I may put my oar in... My 'Spinner' uses separate springs for the drivers and the trailing axle, though they could have been connected with a CSB, but having a bogie complicated that somewhat. For a 2-2-2, CSBs will do a great job for the ride of the chassis, but for traction the concept limits t...

Well, I’m impressed. That certainly qualifies as “small” Ted and with all the bits fitting inside to boot. Thank you. PS Those “chopper” style couplings look the part for narrow gauge. Whose are they? Thank you, David. I am a complete innocent* when it comes to narrow gauge, both prototype and mode...

I found MRJ 279 most inspiring, particularly the 2mm and 3mm scale articles. It was an amazing 14 years ago when learning about belt drives from Nigel Lawton that he supplied and I built a 9mm gauge 40hp Simplex. model Simplex 006.JPG When David Knight asked me about r/c for 'Christine', I was reluc...

That looks brilliant. I'm probably over thinking this, but does the spring only having 1 handrail knob on the main frame not potentially allow the sprung sideframes to try and twist laterally, especially which entering curves? Or is the idea that there isn't much sideplay allowed, and so it all has...

Thanks John, that answers a few of my questions about where things go. That drawing in Brill is very helpful too, but there are still some things I am wondering about. No doubt they will be answered when Nick continues the build, P.C... (Post Covid). I would like to complete the bogie as close to th...

Interesting article in the August BR Ill by Allan C. Baker on the history of the 'bogies used on Stanier's LMS engines', including drawings, pictures and explanations. The primary compensation principle is one well known, but the lateral spring control was an education - to me at least. Now that Mit...

Looks interesting Ted. When can we expect to see “Christine” running under battery power? ;) No, seriously, is it possible? Cheers, David It would be possible quickly and simply, with a shunter's truck or coal wagon permanently attached, carrying a battery and Rx wired through to the motor. If I we...

Further, Li-Po batteries with clear and obvious internal protection circuit as shown behind the transparent top here:- 502025 Bat. 200mAh.jpg -can be safely and reliably charged direct from a USB 5v supply, using cables such as you might find by entering this:- 'usb a universal power cable' into you...

The supply options expands; I have just had really quick service from Aliexpress:- https://www.aliexpress.com/af/li-po-battery.html?d=y&origin=n&SearchText=li+po+battery&catId=0&initiative_id=AS_20200714065828 - and the choice of sizes is now enormous. Ones to fit any bunker, tanks, ...

So having looked at the way the CSB's would work/ be placed in the chassis - I chickened out (sorry Ted). Man's gotta know his limitations! So I stuck with the compensation. Not my loss Mike! If you, Paul, or anyone else is satisfied with lurchey ride, hesitant pickup, and compromised haulage, it j...

I was alluding to the in-depth knowledge and experience that you have of all matters railway modelling. And the occasional leftfield idea, like using memory wire for operating 4mm brakes! Thanks Paul, I had forgotten that was on the CLAG site:- http://www.clag.org.uk/memory-brake.html and it perhap...

I usually use a laboratory cleaner in the plain water - I think it was a recommendation a few years ago from someone like Ted Scannel, to whom I'm very grateful as it does an excellent job. Much as I would enjoy the credit were it earned, it wasn't me guv. And 'someone like' ? There I was thinking ...