jrmichler's latest activity
-
Jjrmichler replied to the thread Hydrodynamics of modular sponsons for my new Jetskis.So far, so good. Now I need to see a diagram of the hull with and without your sponsons. Search terms personal watercraft hull design...
-
Jjrmichler replied to the thread Hydrodynamics of modular sponsons for my new Jetskis.Welcome to PF. Your diagrams only show a slotted object sliding over a T-rail. That's not enough for me to help you. Before I can...
-
Jjrmichler replied to the thread Undergrad What physics study path would help me answer my own hydraulics question?.High school physics has everything you need except for fluid dynamics. Fluid dynamics is a third year engineering course. Lots of fun...
-
Jjrmichler replied to the thread Need advice and hints for working with helium.Any valves should be bellows sealed to eliminate leaks past the valve stem. The image below is of a Swagelok bellows sealed flow...
-
JYou could also call the number on that "For Lease" sign to talk to the building owner / property manager to see what happened to the...
-
Jjrmichler replied to the thread Machining Aerogel.Google Street View dated August 2023 of that address shows: 106 is the door on the far left. The door in the middle is 102-104...
-
Jjrmichler replied to the thread Need advice and hints for working with helium.Swagelok is a manufacturer of top quality tube fittings. Check them out...
-
Jjrmichler replied to the thread Question about lead & lead vapor.Welcome to PF. The surface color could be a lead / antimony / tin oxide. Are you sure that the lead is ruined? Did a measurable...
-
Jjrmichler replied to the thread Collection of Lame Jokes.Not as good as This Street and That Street, but accurate:
-
JFrost on a windowpane: Nikon D810 + 55mm MicroNikkor + M2 extender w/ focus set at 1:1 reproduction ratio, 1/60s f/8 +2.7 EV, auto...
-
Jjrmichler replied to the thread Random Photos.Photo of me after a four mile run at minus 32 deg F this morning. Frosty on the outside, warm on the inside. The ice buildup on my...
-
Jjrmichler replied to the thread Method of storing energy on the Moon.Some points to consider before you get too excited: 1) Thermal cycling also kills motor/generators. I once headed a motor reliability...
-
Jjrmichler replied to the thread Convert Circular motion into figure-8 shaped loop.A four bar linkage can generate a figure 8 path. There are four bar simulations online to save you the time to create your own. This...
-
Jjrmichler replied to the thread Piston suction pump versus external gear pump as vacuum pump.Quote from Section 6 in the Duplomatic PDF: – It is necessary to vent the air from the delivery connection before operating it the first...
-
Jjrmichler reacted to Sauss's post in the thread How does the thickness of a clamp affect its ability to transmit torque? with
Like.
Thank you for the reply Jim, I really appreciate you revisiting this! That makes sense.





