Help! > Specific Engine Help
Valve question
flopearedmule:
Hi
looking through the prints of a Julius engine and have a question.
The prints have the valve marked "Exhaust and Steam In"
I have drawn it out in Cad and I am thinking he has the Exhaust and Inlet mixed up??
If I put the steam in where it shows on the print, it looks like it will fight with the pressure to go up and down. As the valve goes up, it will fight the pressure to go up? same as it tries to go down.
If I put the steam in the center, It looks like it will work just fine.
Would you guys take a look for me and let me know what you think?? Has anyone built this engine?
My dad is building this engine and he is almost ready to plumb it with air.
Thanks
crueby:
The way he has it drawn will work fine - if there is steam on both the top and bottom opening, the force on the valve is balanced so nothing to work against, since both ends are connected through the pipework on the outside. That is an outside-admission spool valve - if you swapped the steam/exhaust pipe hookups, you would make it an inside-admission valve. Both ways work, both were done on locomotives - it all depends on the timing of the valve gear moving the spool valve. No worries - it will work as drawn.
:cheers:
flopearedmule:
--- Quote from: crueby on July 10, 2021, 02:53:18 AM ---The way he has it drawn will work fine - if there is steam on both the top and bottom opening, the force on the valve is balanced so nothing to work against, since both ends are connected through the pipework on the outside. That is an outside-admission spool valve - if you swapped the steam/exhaust pipe hookups, you would make it an inside-admission valve. Both ways work, both were done on locomotives - it all depends on the timing of the valve gear moving the spool valve. No worries - it will work as drawn.
:cheers:
--- End quote ---
Thanks! I was thinking It would for sure work with the steam in the center, but I wasn't sure about the way it showed on the prints.
Thanks for the quick response.
flopearedmule:
As long as your here, I have another question. ;D I didn't have enough to do at work today, and I started looking at prints lol
I have always been interested in this engine by Julius.
If you notice, the rods are all connected to the crankshaft individual. If I were to make one master rod, and make the other 5 slaves to the master rod, then do the same thing to the valve rods, I'm thinking the timing would be OK as long as I make the center distance with the slaves the same on both??
(This engine has almost the same valve as the other engine in this post)
crueby:
Yup!
Also, by going to the master with a disc the assembly can be shorter front to back.
Navigation
[0] Message Index
[#] Next page
Go to full version