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Re: RWLR - Robin Wood Light Railway
Posted: Fri Aug 11, 2017 5:14 pm
by tom_tom_go
Re: RWLR - Robin Wood Light Railway
Posted: Fri Aug 11, 2017 5:47 pm
by philipy
That bridge is nice Tom, should look good when in position.
Presumably the water tower has been converted to a diesel fuel tower, judging from the photo's?

Re: RWLR - Robin Wood Light Railway
Posted: Fri Aug 11, 2017 7:24 pm
by tom_tom_go
philipy wrote: Fri Aug 11, 2017 5:47 pm
Presumably the water tower has been converted to a diesel fuel tower, judging from the photo's?
Don't know yet, could still be a water tower?

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Re: RWLR - Robin Wood Light Railway
Posted: Sun Aug 13, 2017 5:53 pm
by tom_tom_go
I was going to leave the fitting of the bridge to the winter so to not disturb the running of trains this summer, however, it was a nice day today and I needed a break from painting the shed!
First up, the timber has held up well all these years (it was installed in 2012)

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And now, we have a bridge!

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But I am not happy with my first attempt at installing it as due to the rail height which you can see in the below pictures the bridge cannot just sit on the deck:

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I knew this was going to be a problem when I started, however, at the time I was going to raise the track bed of the bridge but after a bit of a think my next idea is to cut off both ends of the deck so they are straight and then use some metal angle so I can adjust the height of the bridge to that of the track.
Back to work tomorrow so it will have to be as is for a while

Re: RWLR - Robin Wood Light Railway
Posted: Sun Aug 13, 2017 8:35 pm
by markoteal
I don't think you'll be far off by the time you place the track on the bridge - maybe the thickness of the flat blue steel deck lower that you need to be - maybe add some more metal bar to the bridge deck (i.e.) make it double thickness, before adding track?
Re: RWLR - Robin Wood Light Railway
Posted: Sun Aug 13, 2017 8:44 pm
by ge_rik
How about a couple of half inch wooden blocks under the bridge supports?
Rik
Re: RWLR - Robin Wood Light Railway
Posted: Sun Aug 13, 2017 9:57 pm
by tom_tom_go
Thanks for the suggestions, maybe something like this?
http://www.16mm.org.uk/2015/08/01/mom2015-08/
Re: RWLR - Robin Wood Light Railway
Posted: Mon Aug 14, 2017 8:34 am
by markoteal
Yes, even better - wooden support will look even better than more ironwork, be cheaper (?) as well
Re: RWLR - Robin Wood Light Railway
Posted: Tue Aug 15, 2017 8:15 pm
by tom_tom_go
Although the wood decked option looked brilliant for under £20 I went for more iron work:

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The additional angle needs more adjustment and attaching permanently to the bridge but it's looking promising!
Re: RWLR - Robin Wood Light Railway
Posted: Tue Aug 15, 2017 10:33 pm
by tom_tom_go
Should I be pop riveting the new aluminium angle to the bridge base or can I just use nuts/bolts?
I don't have a pop rivet gun but they are cheap enough if needed.
Re: RWLR - Robin Wood Light Railway
Posted: Tue Aug 15, 2017 11:23 pm
by Peter Butler
Pop-rivet guns are incredibly useful things to have around the house for all manner of jobs, it would handle this perfectly.
Re: RWLR - Robin Wood Light Railway
Posted: Wed Aug 16, 2017 6:22 am
by philipy
tom_tom_go wrote: Tue Aug 15, 2017 10:33 pm
Should I be pop riveting the new aluminium angle to the bridge base or can I just use nuts/bolts?
I don't have a pop rivet gun but they are cheap enough if needed.
I can't see why either wouldn't be perfectly Ok. I agree with Peter, though a pop rivetter can be very useful and its the sort of thing you don't know you are going to need until the need arises, as in this case. So I'd suggest getting one anyway, as you say, they are cheap enough.
Re: RWLR - Robin Wood Light Railway
Posted: Wed Aug 16, 2017 9:10 am
by markoteal
Pop Rivets are fun - if slightly scary when you don't quite know when they are going to pop - as a Landrover owner, mine is always near the top of my toolbox!

Re: RWLR - Robin Wood Light Railway
Posted: Wed Aug 16, 2017 11:19 am
by GTB
tom_tom_go wrote: Tue Aug 15, 2017 10:33 pm
Should I be pop riveting the new aluminium angle to the bridge base or can I just use nuts/bolts?
It's a lot easier to dismantle a bolted joint and they can be adjusted if necessary.
The 'pop' rivet was developed to fit two parts together where there is no access to the back of the joint, hence the name blind rivet.
I do note though that the bridge appears to have been assembled with blind rivets as well as screws, so using either for the added parts would blend in.
I can't remember when I last used blind rivets and I don't own a rivet gun. I seem to get by though.......
Regards,
Graeme
Re: RWLR - Robin Wood Light Railway
Posted: Wed Aug 16, 2017 1:57 pm
by tom_tom_go
Thanks guys. I ordered one anyway but may bolt it together first to make sure it all works before riveting.
At least it will be another new skill I have learned since playing trains (stuff I should of been taught in school).
Re: RWLR - Robin Wood Light Railway
Posted: Wed Aug 16, 2017 9:47 pm
by jim@NAL
I do love that bridge looks like its very well made .and your water tower looks ace
Re:
Posted: Thu Aug 17, 2017 4:22 am
by FWLR
tom_tom_go wrote: Fri Aug 03, 2012 6:18 pm
The loop nearing completion with a revised track layout so I can have an siding be it a small one:
For anyone starting out on their line I would recommend buying a chop saw at it makes life so much easier for you
All comments appreciated!
Cheers,
Tom
Can you tell me what radius that is please Tom, i.e. area 3’,4’,5’ not much idea on radius, never have.

Re: RWLR - Robin Wood Light Railway
Posted: Thu Aug 17, 2017 6:38 am
by tom_tom_go
Hi Rod,
I used Peco 605 set track curves although if space permits go for a larger radius.
Trackshack are a good supplier of Peco track:
http://www.track-shack.com/acatalog/Pec ... T-605.html
Re: RWLR - Robin Wood Light Railway
Posted: Thu Aug 17, 2017 8:22 am
by LNR
Peco ST-605 = 30inch radius = 60inch diam. centre to centre. You would have to add the total width of the sleepers plus clearance to that.
Grant.
PS as Tom says, go bigger if possible, that is a very tight radius.
Re: RWLR - Robin Wood Light Railway
Posted: Thu Aug 17, 2017 8:31 am
by pandsrowe
One thing to remember with pop rivets is that although the rivet is ally, the stem is steel. In an outside environment this will soon rust and cause unsightly stains, although I do appreciate that this is something that you might want.
The heads on these rivets do sometimes fall out of the rivet as the stem breaks off and sometimes it is possible to drive the head of the stem out if you so wish.