Search found 69 matches

by bobwallison
Thu Feb 25, 2021 10:35 pm
Forum: Chassis and Suspensions
Topic: Alan Gibson Loco axles
Replies: 26
Views: 1091

Re: Alan Gibson Loco axles

Thanks for the link Philip, not sure how I missed that while browsing Ultrascale's website.

Regards,
Bob
by bobwallison
Thu Feb 25, 2021 6:21 pm
Forum: Chassis and Suspensions
Topic: Alan Gibson Loco axles
Replies: 26
Views: 1091

Re: Alan Gibson Loco axles

Thanks to all for their input and especially DaveB for giving us the proper engineering background. BS 1916-1 seems to cover the ground, along with BS1916-2 which is the guide for the selection of fits as listed in part 1. Prices are £246 for 46 pages and £218 for 38 pages, so Dave was right about t...
by bobwallison
Wed Feb 24, 2021 9:17 am
Forum: Chassis and Suspensions
Topic: Alan Gibson Loco axles
Replies: 26
Views: 1091

Re: Alan Gibson Loco axles

I have experienced problems with short axles, and I model in EM! On one such occasion I swapped them for 1/8 inch bright steel and it was a nightmare - one of the axles jammed so tight in the bearing I had to destroy the wheelset to get it out. Measuring the diameters with a micrometer showed that t...
by bobwallison
Fri Feb 05, 2021 3:13 pm
Forum: Layouts and Operations
Topic: Brimsdown-The last grand project.
Replies: 514
Views: 107671

Re: Brimsdown-The last grand project.

Dear all, Just found this advert for a mini circular saw on Facebook. Says it has a blade for cutting PCB. no idea if it works. Anyone want to try?? https://theminitablesaw.com/?fbclid=IwAR1tQFoKHiLLWUITOXB_2n6FOO_OCgC0IrXB1BxgkFamEl_AK391Dp59L8g I see that Tony has a PCB shear, but in case other p...
by bobwallison
Sat Jan 30, 2021 3:11 pm
Forum: Chassis and Suspensions
Topic: Tender CSBs and motor torque
Replies: 27
Views: 1331

Re: Tender CSBs and motor torque

Dave,
Thanks for the additional input and reassurance. Lanarkshire's tender chassis duly ordered.

As for the thread on sideplay - wow and double wow! I hadn't realised there was so much to say about it. I think I'll just stick to Pythagoras.

Bob
by bobwallison
Thu Jan 28, 2021 12:19 pm
Forum: Chassis and Suspensions
Topic: Tender CSBs and motor torque
Replies: 27
Views: 1331

Re: Tender CSBs and motor torque

Dave: thanks for the input and your comments on the cardan shaft are noted. A question though - if you use pin point bearings in slots in the outer frames, does that mean there is no sideplay on any of tender wheels? How does that work around curves? Richard - thanks for the links to those indeces. ...
by bobwallison
Tue Jan 26, 2021 6:23 pm
Forum: Chassis and Suspensions
Topic: Tender CSBs and motor torque
Replies: 27
Views: 1331

Re: Tender CSBs and motor torque

Thanks for the response gents. Looks like I'll be ordering a chassis kit (or two) fairly soon now.

It also seems that I should set up my own little database of Really Useful Articles, mainly from S4 News and MRJ. Can't believe that I overlooked such a useful one as Steve Duckworth's.

Bob
by bobwallison
Mon Jan 25, 2021 11:05 pm
Forum: Chassis and Suspensions
Topic: Tender CSBs and motor torque
Replies: 27
Views: 1331

Tender CSBs and motor torque

I'm about to embark on the conversion of a Bachmann 2MT and am planning on fitting the motor in the tender with a cardan shaft to the loco. I am very tempted by the Lanarkshire Models chassis kit but am a little concerned about possible side-to-side rocking due to the torque from the motor acting on...
by bobwallison
Wed Jan 13, 2021 10:51 pm
Forum: Painting and Weathering
Topic: Vallejo Model Air
Replies: 22
Views: 1526

Re: Vallejo Model Air

Plenty to chew on there so thankyou everyone, especially to Mike for the comparison charts.
by bobwallison
Wed Jan 13, 2021 7:39 am
Forum: Painting and Weathering
Topic: Vallejo Model Air
Replies: 22
Views: 1526

Re: Vallejo Model Air

Thanks for the warning Guy.
by bobwallison
Tue Jan 12, 2021 3:02 pm
Forum: Painting and Weathering
Topic: Vallejo Model Air
Replies: 22
Views: 1526

Vallejo Model Air

Now that I have finally got round to using the airbrush I bought many years ago, attention is turning to the fleet of kit- and scratch-built wagons for my BR layout set in 1964 +/- 3 years. Has anyone used Vallejo Model Air for painting rolling stock and can they recommend colour matches for:- BR un...
by bobwallison
Tue Jul 21, 2020 5:56 pm
Forum: Operating in Practice
Topic: Hartington (Derbyshire)
Replies: 9
Views: 3547

Re: Hartington (Derbyshire)

Bob, if you’re having fun then surely you can just enjoy your layout? Or is that heresy? Good thinking Andy, but definitely heresy :D Once I have built the yards at Buxton, I plan to try operating Hartington as-is, but also try operating it as though it were Hindlow, to see which is more fun. Oh no...
by bobwallison
Sat Jul 18, 2020 4:52 pm
Forum: Operating in Practice
Topic: Hartington (Derbyshire)
Replies: 9
Views: 3547

Re: Hartington (Derbyshire)

Welcome to the club, Highpeak - I have an EM gauge model of Hartington in my loft and am currently progressing with the yard and depot at Buxton for the other side of the loft. More of that anon. As well as the references you mention, I also have Rails to Ashbourne by Howard Stringer, an earlier sig...
by bobwallison
Fri Jul 10, 2020 12:06 pm
Forum: Track and Turnouts
Topic: Plywood sleepers
Replies: 11
Views: 1716

Re: Plywood sleepers

0.8mm scales at 2.5 inches, give or take. Subtract a smidgin for the thickness of glue and it is apparant that any ballast larger than a scale 2 inches will project above the top of the sleepers - hardly realistic for the vast majority of jointed track. I started off with thin slepers and fine/"...
by bobwallison
Mon Mar 09, 2020 6:06 pm
Forum: CHEAG
Topic: CHEAG January and February meetings
Replies: 1
Views: 3443

CHEAG January and February meetings

In January we were joined by Dave Barham (of Fen End Pit fame) who presented the beginnings of his station buildings and interlocked lever frame for his new layout, Clare. The lever frame has featured elsewhere in this forum and it was very nice to get our hands on it – all very tactile. Dave has us...
by bobwallison
Tue Dec 17, 2019 1:25 pm
Forum: Starting in P4
Topic: Masokits sprung wagon units
Replies: 6
Views: 1582

Re: Masokits sprung wagon units

Dave Bradwell produces etched bearing holders which allow fairly easy conversion of wagon kits to springing. You use the axleguards/boxes provided in the kit. http://traders.scalefour.org/DaveBradwell/rolling-stock/spring-plates/ They come with the usual highly informative instructions/suggestions. ...
by bobwallison
Thu Dec 12, 2019 4:56 pm
Forum: North London Group
Topic: NLG Christmas 2019 meeting
Replies: 6
Views: 1480

Re: NLG Christmas 2019 meeting

Hi Dave.
It felt like the sort of unusual detail that would be based on photographic evidence.
Did the Newton Heath Jubilees have any long non-stop runs? If not, then the difficult access to the fire irons while on the road wouldn't matter.
Regards,
Bob
by bobwallison
Tue Dec 10, 2019 5:04 pm
Forum: North London Group
Topic: NLG Christmas 2019 meeting
Replies: 6
Views: 1480

Re: NLG Christmas 2019 meeting

I wouldn't want to be the fireman of 45701 if he has need of the fire-irons during the course of the journey. One never knows what objects may descend from the sky to pluck him off the top of the tender.

Bob
by bobwallison
Tue Dec 10, 2019 4:59 pm
Forum: CHEAG
Topic: CHEAG - November and December
Replies: 0
Views: 2258

CHEAG - November and December

Last month we were pleased to welcome Ted and Tony of CLAG to our meeting. Ted bought along the evidence of his experiments in radio control - it was rather weird to see a P4 WD 2-8-0 wandering across a pub table, with no trackwork anywhere is sight. Maybe next time I will take along a metre of P4 t...
by bobwallison
Sun Dec 08, 2019 12:14 pm
Forum: Steam Locomotives
Topic: Jig for drilling crankpin hole
Replies: 72
Views: 9912

Re: Jig for drilling crankpin hole

No one has mentioned the Unimat, which covers all the bases - precision vertical drill, small milling machine and lathe. I've had mine about 30 years - a very good investment. Except that they are now only available secondhand? Even if one could be found at a sensible price it wouldn't seem wise fo...
by bobwallison
Sat Dec 07, 2019 6:26 pm
Forum: Baseboards and Carpentry
Topic: Reduction of noise from baseboards
Replies: 12
Views: 6280

Re: Reduction of noise from baseboards

Noise bounces off hard surfaces and reverberates around the room, but is absorbed by soft materials. When my acoustic colleagues were asked to deal with excess noise in trendy restaurants, they advised cutting down the reverberated noise by replacing hard furniture and decor with soft: it worked a t...
by bobwallison
Fri Dec 06, 2019 6:56 pm
Forum: Steam Locomotives
Topic: Jig for drilling crankpin hole
Replies: 72
Views: 9912

Re: Jig for drilling crankpin hole

PS I was in Axminster's Nuneaton store yesterday, drooling over the Proxxon lathes and milling machines. They looked much better and more user friendly than Axminster's own-branded Chinese imports, but also about twice the price! What particularly caught my eye, though, was the label on one of Axmin...
by bobwallison
Fri Dec 06, 2019 6:40 pm
Forum: Steam Locomotives
Topic: Jig for drilling crankpin hole
Replies: 72
Views: 9912

Re: Jig for drilling crankpin hole

I have a few of the Proxxon tools, including the KT70 compound table. They are all well built and a pleasure to use. The KT70 is practically the same as the table on the mf70. The mf70 looks like a super little machine, perfectly at home on a typical domestic workbench (unlike some other micro mille...
by bobwallison
Fri Dec 06, 2019 4:25 pm
Forum: Track and Turnouts
Topic: Exactoscale Fastrack
Replies: 7
Views: 1786

Re: Exactoscale Fastrack

Thanks for the responses guys - a few ideas to try out now. It's interesting that nearly everyone seems to fix the track first and ballast later. Ever since I made my own OO gauge track, I have laid track and ballasted in one operation, same as Norman Solomon, but we seem to be a dying breed in this...
by bobwallison
Fri Dec 06, 2019 4:13 pm
Forum: Steam Locomotives
Topic: Jig for drilling crankpin hole
Replies: 72
Views: 9912

Re: Jig for drilling crankpin hole

Just to add to the confusion, here is my take on David Knight's solution (with thanks for the original idea). Crankpin jig.jpg It is turned from brass so that the centre spigot is a sliding fit in the Gibson axle hole and the crankpin holes were drilled (on a vertical mill) over-size to take a steel...

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