Search found 14 matches

by bjuleff
Sun Aug 25, 2019 4:15 pm
Forum: Track and Turnouts
Topic: Crossing vee soldering problem
Replies: 8
Views: 1433

Re: Crossing vee soldering problem

Hi Tim, Thanks for the useful tip about soldering the vee from the underside, although so far my exploits when soldering from the top have not resulted in any solder smudges! I'm not too worried about the melamine as the heat is very localised and not in contact with it. Hi Dave, Blackened but not m...
by bjuleff
Fri Aug 23, 2019 4:56 pm
Forum: Track and Turnouts
Topic: Crossing vee soldering problem
Replies: 8
Views: 1433

Re: Crossing vee soldering problem

Hi Dave! I am sure you are right about the strength of silver solder but, honestly, the surface area of the soldered part of the splice rail at this angle of crossing (1 in 1.5) is barely one square millimetre. Anyway, as it happens I've managed this morning to make an accurate crossing by factoring...
by bjuleff
Thu Aug 22, 2019 9:11 am
Forum: Track and Turnouts
Topic: Crossing vee soldering problem
Replies: 8
Views: 1433

Re: Crossing vee soldering problem

Hi Gordon, I won't be able to get the plywood very close to the vee end as it will be burnt by the blowlamp and red hot rails. I am happy the rails are not moving whilst being soldered, which makes me think contraction forces are at work. I suppose I could try filing up something like brass, but its...
by bjuleff
Wed Aug 21, 2019 3:08 pm
Forum: Track and Turnouts
Topic: Crossing vee soldering problem
Replies: 8
Views: 1433

Crossing vee soldering problem

I've been happily soldering up crossing vees for some years using the silver soldering process. I prefer silver solder as it prevents meltdown of the whole lot when I conventionally solder it to my Masokits chairs and copper clad timbers. It's all worked well until this week. I have been trying to m...
by bjuleff
Thu Sep 17, 2015 8:49 am
Forum: Chassis and Suspensions
Topic: Ultrscale crankpin question
Replies: 23
Views: 5609

Re: Ultrscale crankpin question

Ok Fellas - another sceptic converted! I'll look out for a bottle of Loctite 290 and give it a go. Comparing the datasheets Loctite 278 seems to be sold as a high strength compound giving breakaway torque figures of 42Nm !! Maybe a bit OTT for our use. By comparison 290 is rated at 10Nm. These figur...
by bjuleff
Wed Sep 16, 2015 4:45 pm
Forum: Chassis and Suspensions
Topic: Ultrscale crankpin question
Replies: 23
Views: 5609

Re: Ultrscale crankpin question

Thanks for the info about Loctite, Morgan. As I remarked to Philip, it looks to be a trifle risky. Not so much with wheels but the thought of capillarity taking it back past the washer and into contact with the coupling rod leaves me a little suspicious of it. The old Loctite I used to use on my mot...
by bjuleff
Wed Sep 16, 2015 9:34 am
Forum: Chassis and Suspensions
Topic: Ultrscale crankpin question
Replies: 23
Views: 5609

Re: Ultrscale crankpin question

Sounds a bit high risk to me! But thanks for the tip Philip.
by bjuleff
Wed Sep 16, 2015 8:48 am
Forum: Chassis and Suspensions
Topic: Ultrscale crankpin question
Replies: 23
Views: 5609

Re: Ultrscale crankpin question

Hi Morgan, Yes, I was thinking varnish might be good if it doesn't have to cope with much torque. As you say, the test running should reveal any snagging. Interested to hear you suggest Loctite 290. I am not sure what the various Loctite compounds are all about, but have it in the back of my mind th...
by bjuleff
Wed Sep 16, 2015 8:10 am
Forum: Chassis and Suspensions
Topic: Ultrscale crankpin question
Replies: 23
Views: 5609

Re: Ultrscale crankpin question

Thanks for the pictures, Morgan and Howard. Which now prompts me to ask, how do you make sure it stays tight - there's not any evidence of soldering? Not that I'd want to in such a confined space.
by bjuleff
Tue Sep 15, 2015 4:49 pm
Forum: Chassis and Suspensions
Topic: Ultrscale crankpin question
Replies: 23
Views: 5609

Re: Ultrscale crankpin question

Many thanks for your speedy replies, Howard and Tim. A good suggestion regarding using the ordinary type crankpins first, however as I've already assembled the wheel sets and filed down the head of the crankpin at the back, I'm a bit stymied now to go that route! But at least I've got a way forward ...
by bjuleff
Tue Sep 15, 2015 3:52 pm
Forum: Chassis and Suspensions
Topic: Ultrscale crankpin question
Replies: 23
Views: 5609

Ultrscale crankpin question

Perhaps some of you guys may be able to put my mind right on this one. I am currently building an outside cylindered loco, my first in fact! I am using the Ultrascale system and have got into a pickle over the leading axle crankpin arrangement. This is the Type C (recessed behind slidebars). As I se...
by bjuleff
Sat Aug 24, 2013 10:51 am
Forum: Painting and Weathering
Topic: Airbrushing varnish: advice sought
Replies: 62
Views: 22035

Re: Airbrushing varnish: advice sought

Hi Steve, Thanks for the useful info about thinning Ronseal for spraying. To take up your later point about why varnish at all, my prime reason is to put a protective layer over the transfers, rather than to protect the paintwork. But to get a uniform coverage the whole area has to be coated. Unless...
by bjuleff
Fri Aug 23, 2013 9:50 am
Forum: Painting and Weathering
Topic: Airbrushing varnish: advice sought
Replies: 62
Views: 22035

Re: Airbrushing varnish: advice sought

Many thanks to all who have replied to my post. Interesting reading. Steve was saying stay safe use the same type of varnish over the paint. Well my paint was Halfords aerosol car paint, presumably with a cellulose type thinner and with the same range varnish it produces minute "crackling"...
by bjuleff
Thu Aug 22, 2013 11:15 am
Forum: Painting and Weathering
Topic: Airbrushing varnish: advice sought
Replies: 62
Views: 22035

Re: Airbrushing varnish: advice sought

Seeking advice on varnishing, I have just seen this thread and I wonder if I could tease out a little more information from those in the know. I have experimented with a number of aerosol varnishes and have learned to be wary of those which attack my transfers. I have found Halfords and Citadel (Gam...

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