Black 5 Timing

This topic has 5 replies, 2 voices, and was last updated 3 November 2017 at 21:20 by Ron Hancock.

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19 October 2017 at 12:30 #322263
Ron Hancock
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@ronhancock63652
i think I have a Problem with my timing I am far out of my comfort zone to set myself. Julian Atkins has offered to help but thought I would post a few photos for feed back. Maybe you can see some thing like you did with the Crank. Just like to know as it seems to have lost its Bark and is definatly down on Power. It really struggled to pull 7 adults no Imphal at all.Any comments really greatful thanks Guys’ve
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19 October 2017 at 12:30 #1648
Ron Hancock
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@ronhancock63652
3 November 2017 at 20:25 #325281
Ron Hancock
Participant
@ronhancock63652
Well bit more work to do going to change the 10 mm gas valve for a 15 mm gas valve. Also changing the pipe work from cylinders to boiler from 1/4 to 3/8. Made new pipework to cylinders with oil feed in got to make fittings to go through boiler. Still got my timing to do but afraid making it worse but luckily Julian Atkins has offered to set it for me as he has done so many. I can follow part of it but does not properly sink in. My Black 5 lacked pulling power I have fitted new pistons and Rings but still struggled to pull 7 on the Flat. Thought if I try and get every thing as suggested stand a good chance of solving lack of power. With timing set as it should be correct size pipes and larger gas valve hope it soolves the problem.

Ron
3 November 2017 at 20:57 #325285
not done it yet
Participant
@notdoneityet
No replies to your earlier posting, I see.

I'm no expert and know diddly squat about steam loco builds, but as I see it if it was OK and isn't now it is unlikely anything to do with the timing. It would seem that something else has changed. Steam pressure or delivery seem the only obvious culprits, but maybe my post will wake up a few of the loco builders and runners!
3 November 2017 at 21:20 #325293
Ron Hancock
Participant
@ronhancock63652
No I forgot to add besides the Crank coming out witch upset the timing. Also my uncle built frames motion gear and pistons over 60 years ago. He built it coping original l plans from crew but his first build. Since I finished building it always thought it lacked power. He had built it with steam pipes of 3/16 was told to small so used 1/4 but after found they should have been 3/8. I also found from my new club members the 10 mm gas valve is to small for a 5” Black 5 hence now fitting a 15mm Gas valve. I think the timing is very hard to get right first time unless you really understand it so many try and get wrong. The only real way I think is to get some one who knows what they are doing to check it and if it’s wrong set correctly. If in doubt ask a professional and learn from it
3 November 2017 at 21:20 #325295
Ron Hancock
Participant
@ronhancock63652
No I forgot to add besides the Crank coming out witch upset the timing. Also my uncle built frames motion gear and pistons over 60 years ago. He built it coping original l plans from crew but his first build. Since I finished building it always thought it lacked power. He had built it with steam pipes of 3/16 was told to small so used 1/4 but after found they should have been 3/8. I also found from my new club members the 10 mm gas valve is to small for a 5” Black 5 hence now fitting a 15mm Gas valve. I think the timing is very hard to get right first time unless you really understand it so many try and get wrong. The only real way I think is to get some one who knows what they are doing to check it and if it’s wrong set correctly. If in doubt ask a professional and learn from it
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