CR COUPLING RODS IN 4MM

How to do it, advice sought and offered.
lindsay_g
Posts: 381
Joined: Mon Aug 13, 2012 8:43 pm

CR COUPLING RODS IN 4MM

Post by lindsay_g » Wed Jan 23, 2019 9:10 pm

Perhaps the item most lacking or most deficient in the modelling marketplace for us of a Caley persuasion is the availability of coupling rods to the very distinctive CR pattern. There is virtually nothing available apart from those that come with kits. Unfortunately, those with kits are generally a poor representation, overscale, and/or made of inappropriate material. Added to this is the fact that 6 coupled rods are invariably rigid or hinged on the centre wheel rather than just behind that wheel. They’re a rather important item to good running so important to get them right. They’re also tedious to make from scratch in view of the pattern involved. This really affects everyone building engines, whether we’re building from scratch, working from a body etch only (rather topical presently), building from etched or white metal kits that are available, and possibly anyone wanting to convert a forthcoming 828 to EM or P4.

With all that in mind, a couple of avenues are being pursued to help anyone thinking of loco building or being put off because of the lack of them. One of the options is a nickel silver etch and an etcher/caster, who is presently producing some lovely quality products, has indicated that he’s prepared to take this forward provided he can be given sufficient information to go on – this aspect is currently in hand. The chances are that the most realistic way forward is for a “universal” etch to be produced which would allow virtually any class from Drummonds onwards to be modelled. I personally can’t see that etches for individual classes will be viable for an etcher in view of the numbers that might be involved – but having said that there are a number of 4 coupled engines with 7’ 6” rods and a number of 6 coupled engines with 7’ 6”-8’ 9” rods that might make something more specific a possibility. Universal rods can be made up hinged or rigid.

So, question time. Would you be interested in the possibility of a universal etch being pursued? No obligation to purchase at all – going by present products they might be around £5 but that might depend on how complicated we try and make it. Just let us know whether you’re interested.

Answering just that will be fine. It might help further towards specific classes if you can indicate what classes you might be looking to build. I'll get the ball rolling - I’ll be looking for rods for a 171, 2 104’s, a 439, a 782, a 498, an 812, and a Jumbo.

Looking forward to a huge influx of responses,

Lindsay
Last edited by lindsay_g on Thu Jan 24, 2019 1:03 am, edited 2 times in total.

John Lindsay
Posts: 82
Joined: Mon Aug 27, 2012 10:28 am

Re: CR COUPLING RODS IN 4MM

Post by John Lindsay » Wed Jan 23, 2019 10:12 pm

Hi Lindsay

I'd be interested in a set for a jumbo.

Cheers

John

dumb buffer
Posts: 502
Joined: Tue Aug 14, 2012 10:13 pm

Re: CR COUPLING RODS IN 4MM

Post by dumb buffer » Wed Jan 23, 2019 11:12 pm

Lindsay

Looking at my round tuit box, I might, eventually, need sets for:-

Jumbo x4
Cardean x2
782 x2
66 x2
171 x2
Balerno Pug
55

However, I most certainly wouldn't need them all at once!

Allan F

lindsay_g
Posts: 381
Joined: Mon Aug 13, 2012 8:43 pm

Re: CR COUPLING RODS IN 4MM

Post by lindsay_g » Wed Jan 23, 2019 11:50 pm

Folks,

The first 2 replies have only mentioned specific classes. The main question for all to reply to is whether you'd be happy with the universal etch approach being pursued. In case it was vague wording from me, I've altered my initial response. Apologies if that was the case.

The secondary, and optional, question was the classes of locos you might be modelling to see if specific class etches might be viable. Between the 2 responses and my wish list there is already 5 requests for the same size of coupling rods, so get these numbers up and there may be enough to warrant dedicated etches. No promises, however.

Lindsay

David Elvy
Posts: 441
Joined: Tue Aug 21, 2012 6:26 am

Re: CR COUPLING RODS IN 4MM

Post by David Elvy » Thu Jan 24, 2019 8:40 pm

I am having most of the coupling rods people have requested drawn for me in 7mm scale and speaking with my expert cad master he says its a simple job to re-scale to 4mm scale, two questions, I don't have any details for the 66 Class or the 498 class, can anyone help confirm the wheel centres for these two please, thanks.

David

Alan K
Posts: 339
Joined: Mon Aug 13, 2012 9:41 pm

Re: CR COUPLING RODS IN 4MM

Post by Alan K » Thu Jan 24, 2019 8:59 pm

Universal rods would suit me OK. Also maybe a couple of Jumbo sets - but the Jumbo, 782/29 all have the same wheelbase, so that size of connecting rod might be a good candidate for a dedicated set.

Alan

jimwatt2mm
Posts: 634
Joined: Fri Nov 16, 2012 5:36 pm

Re: CR COUPLING RODS IN 4MM

Post by jimwatt2mm » Thu Jan 24, 2019 10:22 pm

David Elvy wrote:I am having most of the coupling rods people have requested drawn for me in 7mm scale and speaking with my expert cad master he says its a simple job to re-scale to 4mm scale, two questions, I don't have any details for the 66 Class or the 498 class, can anyone help confirm the wheel centres for these two please, thanks.

David
66 class are 9'0" and 498 Class are 5'0" + 5'0" (Cambell Cornwell appendix 4)

Jim W

David Elvy
Posts: 441
Joined: Tue Aug 21, 2012 6:26 am

Re: CR COUPLING RODS IN 4MM

Post by David Elvy » Fri Jan 25, 2019 6:38 am

jimwatt2mm wrote:
David Elvy wrote:I am having most of the coupling rods people have requested drawn for me in 7mm scale and speaking with my expert cad master he says its a simple job to re-scale to 4mm scale, two questions, I don't have any details for the 66 Class or the 498 class, can anyone help confirm the wheel centres for these two please, thanks.

David
66 class are 9'0" and 498 Class are 5'0" + 5'0" (Cambell Cornwell appendix 4)

Jim W
Thanks Lindsay, I had the book in my hand last night and completely forgot about the appendix.

David

stuartp
Posts: 17
Joined: Sun Oct 21, 2012 7:40 pm

Re: CR COUPLING RODS IN 4MM

Post by stuartp » Fri Jan 25, 2019 4:28 pm

I'd be interested in universal rods in 4mm please. Potentially half a dozen sets based on current requirements.

PeterS
Posts: 4
Joined: Thu Oct 25, 2018 8:38 am

Re: CR COUPLING RODS IN 4MM

Post by PeterS » Fri Jan 25, 2019 5:29 pm

I would also be interested in a few sets. Universal would probably be OK, but I will wait and see how the interest develops in the specials before I commit. 4mm please.

Dave John
Posts: 198
Joined: Wed Aug 15, 2012 7:42 am

Re: CR COUPLING RODS IN 4MM

Post by Dave John » Fri Jan 25, 2019 8:57 pm

A universal would be useful.

David Elvy
Posts: 441
Joined: Tue Aug 21, 2012 6:26 am

Re: CR COUPLING RODS IN 4MM

Post by David Elvy » Wed Jan 30, 2019 9:52 pm

Just a quick wee update for folk, Lindsay and I have been corresponding in the background; we are in the throws of finalising which rods to include on each etch, yep that's one for 4mm and 7mm modellers, if you have a loco you'd like rods for and roughly how many please let us know, thanks.

David

Jim Summers
Posts: 824
Joined: Tue Aug 14, 2012 8:54 pm

Re: CR COUPLING RODS IN 4MM

Post by Jim Summers » Thu Jan 31, 2019 12:23 pm

I'd be interested in, say, three universals and a 66, 4mm please.
I guess I am on my own for the 2-4-0 classes.

JimS

David Elvy
Posts: 441
Joined: Tue Aug 21, 2012 6:26 am

Re: CR COUPLING RODS IN 4MM

Post by David Elvy » Thu Jan 31, 2019 2:39 pm

Jim Summers wrote:
Thu Jan 31, 2019 12:23 pm
I'd be interested in, say, three universals and a 66, 4mm please.
I guess I am on my own for the 2-4-0 classes.

JimS

Jim

For me this is Phase I or to be specific round boss style coupling rod phase, I thought it better to get something which the majority would like out first.
I’ll be needing the older style coupling rods at some point so once the more modern ones are available and drawing availability permitting the older square/rectangular bearing style will be looked at. Let’s not scare the cad man just yet.

David

stuartp
Posts: 17
Joined: Sun Oct 21, 2012 7:40 pm

Re: CR COUPLING RODS IN 4MM

Post by stuartp » Fri Feb 01, 2019 8:07 am

Two Jumbos, 812, 300, 72 and 782 please in 4mm.

Carina M
Posts: 13
Joined: Tue Jan 30, 2018 4:43 pm

Re: CR COUPLING RODS IN 4MM

Post by Carina M » Fri Feb 01, 2019 8:58 pm

I would like to have rods for a Jumbo, a 782, a 439 and a 944 class initially, all in 4mm scale. In the longer term (and If I live long enough!) one each of classes 30 and 55, but for these I’d settle for universal rods if that makes more sense commercially.

Carina

Alan K
Posts: 339
Joined: Mon Aug 13, 2012 9:41 pm

Re: CR COUPLING RODS IN 4MM

Post by Alan K » Sat Feb 02, 2019 8:18 pm

For me it would be 3 x Jumbo/782 (I guess this would be the only one which might give sufficient numbers to justify a dedicated set) and 1x 498. Otherwise I would take them all as 'universal'

Alan

iainkirk
Posts: 13
Joined: Fri Aug 23, 2013 9:56 am

Re: CR COUPLING RODS IN 4MM

Post by iainkirk » Thu Feb 07, 2019 6:50 pm

Would these be through that nice Mr Franks?
An announcement has appeared on the Scalefour Forum.
May we have the clarity to see our work, the courage to embrace it, and the capacity to discharge it.
Robert Fripp

tony brenchley
Posts: 299
Joined: Sun Aug 26, 2012 9:36 am

Re: CR COUPLING RODS IN 4MM

Post by tony brenchley » Thu Jun 06, 2019 4:23 pm

I am coming a bit late for this thread but Class 812 rods seem essential for the new model from Sheffield. Is anybody planning to offer a proper (P4/EM) underframe for this? I have a spare underframe etch from Jim Smellie when he was advertising some surplus etches a few years ago but there are no rods with this.

For me personally a couple of sets for Jumbos, although I have made properly jointed rods for my most recent Jumbo underframe using the nickel silver etches from the Worsley Works underframe etch as a basis. Also 2 sets for rebuilt Oban Bogies, and Jim S, you are not alone in wanting something for a Conner 2-4-0 or 2.

If I can get all this lot finished in the next 10 years I will be well pleased.

Tony B

lindsay_g
Posts: 381
Joined: Mon Aug 13, 2012 8:43 pm

Re: CR COUPLING RODS IN 4MM

Post by lindsay_g » Fri Jun 07, 2019 8:09 am

Well the Jumbo and 812 are in hand, and a universal set will do all other Drummond's. Just a matter of time.

Lindsay

tony brenchley
Posts: 299
Joined: Sun Aug 26, 2012 9:36 am

Re: CR COUPLING RODS IN 4MM

Post by tony brenchley » Fri Jun 07, 2019 11:05 am

Thanks for the good news Lindsay. Are you dealing with sales of the coupling rods? I could handle them through TLM if that is a help.

Tony B

Steve Parsons
Posts: 422
Joined: Thu Jun 12, 2014 9:01 pm

Re: CR COUPLING RODS IN 4MM

Post by Steve Parsons » Fri Jun 07, 2019 11:30 am

Hello Lindsay some Jumbo rods would be most welcome but i could certainly use some universal sets as well please.
Steve

lindsay_g
Posts: 381
Joined: Mon Aug 13, 2012 8:43 pm

Re: CR COUPLING RODS IN 4MM

Post by lindsay_g » Fri Jun 07, 2019 1:25 pm

I''m only a catalyst having asked Dave Franks if he'd produce a universal etch. He's actually gone further and has trial etches underway for the Jumbo and 812. Nothing in production as yet, but I'll update if I hear of any developments.

David Elvy was also looking to produce rods for specific classes. Not sure what stage things might be there.

Cheers,

Lindsay

Graham Tipple
Posts: 90
Joined: Tue Dec 27, 2016 8:16 pm

Re: CR COUPLING RODS IN 4MM

Post by Graham Tipple » Sun Jun 09, 2019 8:12 pm

Universal would be fine. Several sets, certainly. Graham

jasp
Posts: 443
Joined: Mon Aug 20, 2012 5:40 pm

Re: CR COUPLING RODS IN 4MM

Post by jasp » Sun Jun 30, 2019 5:55 pm

Dave Franks (Lanarkshire Models and Supplies) has produced coupling rod etches, in nickel silver, for some CR locos.
The quality is superb.
The various types can be viewed on the LMS website - lanarkshiremodels.com
We hope to produce a review for October TTL
Thanks Dave
Jim P

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