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Re: Tim V's workbench

Posted: Mon Dec 03, 2018 10:16 am
by Noel
John Palmer wrote:If I remember the article correctly, it wasn't the bargees but the board of the Somerset Coal Canal that got trapped in a caisson


https://www.coalcanal.org/features/Caisson/Caisson.php Apparently one of those inventions which contemporary technology wasn't really good enough to make practical, and by the time technology caught up there wasn't any use for the invention.

Re: Tim V's workbench

Posted: Mon Dec 03, 2018 1:59 pm
by Will L
Thanks for the link Noel, the last few post now make some sort of sense

Re: Tim V's workbench

Posted: Sun Jun 16, 2019 2:57 pm
by Tim V
I was wondering why my bottle of Loctite 603 wasn't glueing, best before date 1/2013 - over six years ago!

Re: Tim V's workbench

Posted: Wed Mar 25, 2020 8:57 pm
by Tim V
Starting work on the BG goods engine, first job is make the split axles. Very few useful dimensions on the BG website, but I've calculated that a 45mm axle will cover the outside framed engine. So I've started making them.

Re: Tim V's workbench

Posted: Thu Mar 26, 2020 7:30 am
by Daddyman
Tim V wrote:I was wondering why my bottle of Loctite 603 wasn't glueing, best before date 1/2013 - over six years ago!

That's useful! I was having the same problem - didn't even know they had sell-by dates! There is no date visible on mine, but that perhaps attests to its age!

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Thu Mar 26, 2020 10:25 am
by bécasse
My Loctite 601 bottle is still going strong and I must have bought it from Andy Mullins a good quarter of a century ago. I used it to fix a worm on a motor shaft only a couple of weeks ago so I know it still works.

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Sat Mar 28, 2020 4:24 pm
by Tim V
Decided instead to build the tender first. Axles being made, wheels sourced.

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Sat Mar 28, 2020 5:57 pm
by Paul Townsend
Tim V wrote:Decided instead to build the tender first. Axles being made, wheels sourced.

I can post you tender axles......2mm for normal wheels, BG length and pin points, but maybe you need plain ends and splits.

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Sat Mar 28, 2020 6:24 pm
by Tim V
Too late - already made them!

As said, I'm building this without recourse to any outside trade help. So although the BGS may have the correct wheels (for example), as I'm not a member I can't use their excellent trade counter!

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Sat Mar 28, 2020 7:23 pm
by Steve Carter
Tim V wrote:Too late - already made them!

As said, I'm building this without recourse to any outside trade help. So although the BGS may have the correct wheels (for example), as I'm not a member I can't use their excellent trade counter!


There’s an easy solution to that Tim

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Sun Mar 29, 2020 1:36 am
by Paul Townsend
Tim V wrote:Too late - already made them!

As said, I'm building this without recourse to any outside trade help. So although the BGS may have the correct wheels (for example), as I'm not a member I can't use their excellent trade counter!

Not true.
BGS sells to non members, all product prices are on our website, apart from any shewn as out of stock.
Members get approx. 10% discount.

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Sun Mar 29, 2020 4:00 pm
by Tim V
Tender body assembled, minor problem as it appears the castings may be slightly over-width, but a bit of squeezing and fiddling looks like it might be on track. Motor tried in position, next is to make the running gear.
IMG_0597.JPG
IMG_0597.JPG (238.27 KiB) Viewed 2308 times

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Sun Mar 29, 2020 5:15 pm
by Paul Townsend
From the sublime to the ridiculous.....look at the loco at the back of Tim's bench with meccano lookalike wheels...must be for his 1810 caper!

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Mon Mar 30, 2020 3:42 pm
by Tim V
Well, with broad gauge stuff, my working area went down to about three inches square - something had to be done, so I'm tidying the bench.

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Mon Mar 30, 2020 5:31 pm
by Tim V
And look what I've found! A possible gearbox for the loco. Motor in the tender. I don't know how long I've had these gearboxes - weren't they part of Dynadrive (some of that pre-DCC nonsense to get better response). Anyway, they appear to work and I've got two of them. Just coupled them up to the motor, I don't remember what ratio they are, weren't they designed for diesels? And they drive back - if this works, those BG layouts this might run on won't know what's hit them :D
IMG_0598.JPG

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Mon Mar 30, 2020 7:21 pm
by Philip Hall
They do look like the Brimalm gearboxes that were part of DynaDrive. Quite a low ratio, maybe 30:1 or thereabouts.

Philip

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Mon Mar 30, 2020 7:58 pm
by Tim V
I thought they might be, looking at some MRRC gears I have to reduce the speed. It is a goods engine I'm building.

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Tue Mar 31, 2020 8:38 am
by Terry Bendall
Tim V wrote:I have to reduce the speed.


Perhaps a second gearbox with some spur gears either on the motor or before the existing gearbox? Your workbench looks in about the same condition as mine! :)

Terry Bendall

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Tue Mar 31, 2020 11:48 am
by Tim V
Terry Bendall wrote:Perhaps a second gearbox with some spur gears either on the motor or before the existing gearbox? Your workbench looks in about the same condition as mine! :)

Terry Bendall


That is the plan. That is the workbench after I'd tidied up!

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Tue Mar 31, 2020 6:17 pm
by Tim V
Well that's blown it. The motor I planned to use (pictured above) that I thought was brand new, turned out to be a dud, it runs hot. Checked the brushes and springs which look OK.

I've now looked in my spare motor box, a couple of round cans which seem to work, so I'm going to have a look in the EMGS manual (shhhh) at the motor data for a suitable RPM.

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Tue Mar 31, 2020 7:44 pm
by Guy Rixon
IIRC the final-drive gearboxes use bevels and the ratio is quite low, possibly 15:1. Yes, they are for Dynadrive, and the system included a 2:1 spur box.

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Mon Apr 06, 2020 4:25 pm
by Tim V
Another look at the motor I planned to use. I tried tapping the ends, as sometimes they are assembled out of square - seems to have done the trick, motor does not run hot. Now to make the reduction gearbox.

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Tue Apr 07, 2020 3:59 pm
by steve howe
Paul Townsend wrote:From the sublime to the ridiculous.....look at the loco at the back of Tim's bench with meccano lookalike wheels...must be for his 1810 caper!


I'm still waiting to see how he gets that horse to walk..... :D

Steve
(self-isolating from the Cameo Challenge 8-) )

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Tue Apr 07, 2020 3:59 pm
by Tim V
All in good time ...

Re: Tim V's workbench - broad gauge tomfoolery

Posted: Sun Apr 19, 2020 3:48 pm
by Tim V
Progress on the step down gearbox, now starting on the scratch-built frames.
IMG_0604.JPG

Stripes in photo from the venetian blinds on the window.