Search found 156 matches

by milwiron
Fri Mar 15, 2024 3:49 pm
Forum: Riding Scale Railroading
Topic: Riding car trucks
Replies: 13
Views: 5881

Re: Riding car trucks

Pontiacguy1 wrote: Fri Mar 15, 2024 7:28 am That's not a bad looking truck sideframe either. What bearings did you use? I assume a radial ball bearing.
I was going to use al. bronze but switched to deep groove ball bearings.
by milwiron
Thu Mar 14, 2024 3:21 pm
Forum: Riding Scale Railroading
Topic: Riding car trucks
Replies: 13
Views: 5881

Re: Riding car trucks

Cheap and sleazy archbar frame. I originally designed the side frames for water jet cutting... which I lost 24-7 access to when I retired. This frame is laser cut. The journal boxes don't look as clunky when painted black.
laser_archbar_100.jpg
laser_archbar_100.jpg (163.43 KiB) Viewed 206 times
by milwiron
Sat Mar 02, 2024 5:19 am
Forum: Live Steam
Topic: Simple, heavy duty, truck design for ballast cars
Replies: 18
Views: 1924

Re: Simple, heavy duty, truck design for ballast cars

Great information, thank you Greg!
by milwiron
Wed Dec 06, 2023 6:08 pm
Forum: Live Steam
Topic: Steam Dome Ball Valve Throttle
Replies: 34
Views: 16654

Re: Steam Dome Ball Valve Throttle

Thank you Bill.
by milwiron
Wed Dec 06, 2023 4:57 pm
Forum: Live Steam
Topic: Steam Dome Ball Valve Throttle
Replies: 34
Views: 16654

Re: Steam Dome Ball Valve Throttle

do you know how much steam will go through a 3/16" ball valve? :shock: it is not a problem.... Nope, not a clue. I don't know what a reduction to a 3/16" hole near the beginning of steam travel does at the cylinders, hence my original post. :wink: Three very kind and appreciated responses...
by milwiron
Wed Dec 06, 2023 2:29 pm
Forum: Live Steam
Topic: Steam Dome Ball Valve Throttle
Replies: 34
Views: 16654

Re: Steam Dome Ball Valve Throttle

Please correct me if I'm wrong but it appears everyone using a 1/4" ball valve is using a full port version where the port size is around 3/8 of an inch. A regular/reducing port is about 3/16". A 3/16" port seems awfully small. A modified 1/4" 90 degree globe valve looks super si...
by milwiron
Fri Dec 01, 2023 12:55 pm
Forum: Live Steam
Topic: Steam Dome Ball Valve Throttle
Replies: 34
Views: 16654

Re: Steam Dome Ball Valve Throttle

Thanks for the pics and video Chris. My current thinking is a cam slot in the valve lever and a well supported cam follower on the throttle rod. Or the opposite, cam follower on the valve lever and the cam slot as part of the supported throttle rod. In either case the first travel of throttle pull w...
by milwiron
Thu Nov 30, 2023 10:33 am
Forum: Live Steam
Topic: Steam Dome Ball Valve Throttle
Replies: 34
Views: 16654

Steam Dome Ball Valve Throttle

My current and probably last build is an Allen Chloe with a 1-3/8" x 2-1/4 bore and stroke. The boiler is oversized from the prints at 6" instead of 5". Firing will be propane. After a ton of reading and lots of procrastination I've decided to go with a 1/4" ball valve throttle i...
by milwiron
Wed Nov 29, 2023 8:34 am
Forum: Live Steam
Topic: Preferred fittings in a smokebox?
Replies: 20
Views: 6609

Re: Preferred fittings in a smokebox?

Thanks for the advice guys.
Denny
by milwiron
Wed Nov 22, 2023 8:19 am
Forum: Live Steam
Topic: Preferred fittings in a smokebox?
Replies: 20
Views: 6609

Preferred fittings in a smokebox?

For steam delivery in a 6 inch diameter smokebox do people prefer pipe threads with unions, compression or flared fittings?

Thanks for your input,
Denny
by milwiron
Sat Nov 11, 2023 9:58 am
Forum: Live Steam Marketplace
Topic: Brand new 4-4-0 American
Replies: 83
Views: 35467

Re: Brand new 4-4-0 American

Screenshot_2023-11-11-08-45-40-781.jpeg
Screenshot_2023-11-11-08-45-40-781.jpeg (81.42 KiB) Viewed 4398 times
Screen shot taken from the third video I believe of the subject engine. Anyone know where the boiler and welding came from?

Denny
by milwiron
Mon Oct 02, 2023 5:02 am
Forum: Live Steam
Topic: Tube rolling max expansion?
Replies: 9
Views: 1116

Re: Tube rolling max expansion?

Hi Greg, The Airetool tube reduction rolling formula also takes clearance between tube and hole in to account. For the test piece I went by ignorant intuition and feel since my clearance is excessive in that one hole. My test id came out .004 over Airetool's formula result. When I do the actual roll...