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Sikorsky, Thank you for the compliment Glad you enjoyed the meal and venue at the GEL. You need to checkout Stony Ridge for a burger. Unbelievable!!! Thanks!!!

In the Arrowhead Region of Minnesota, there are several restaurants/resorts worth visiting around Crane Lake, Tower and Ely area and for the more adventurous, Hungry Jack Lodge near Grand Marais, MN. 100LL is available at Scott's on Crane Lake (KCDD), the Tower Seaplane Base (12D) on Lake...

Also, a tire valve will work. Remove the core and just use the screw cap.

https://www.canadiantire.ca/en/pdp/scepter-4wd-vented-gas-can-20-l-0283056p.html?rq=scepter These are nice if you're close to our northern neighbor. They fit real nice in Aerocet float compartments. Not sure if they will ship to the US. Also, not sure about the tariffs.....

kpk250, just wondering if you have enough information from this thread on welding 4130?

McMaster-Carr sells 1026 tubing and I’m sure other suppliers do as well. The chemistry is the same as 1025, especially with the alloy element percentage range. Why is it 1026 and not 1025 (both are low-carbon steels) is any one’s guess. Sometimes it’s even sold as A36. Confusing for sure…

I had PK1500's on a PA-18-95. Two of us at 185# each with 3/4 tanks would be a bit long on the water when temps were in the 80's and light winds. A lot of fun flying it though. Not sure a thorough freshwater rinsing/cleaning will help very much, especially once the salt corrosion starts on...

If interested, you can read the Cadmium Plating Specification: Copy and Paste link: http://everyspec.com/FED_SPECS/Q/QQ-P-416F_22867/ Copy and Paste link to the CallBack #539 Report: https://asrs.arc.nasa.gov/docs/cb/cb_539.pdf I think the CallBack (NASA #539) report Farmboy posted...

Thanks!!!

Just wondering if there is anything new to report. Hopefully it's problem solved.

“I can resist everything except temptation” Oscar Wilde

I think Norm said that walking into Cheers...

You're most welcome, Cubswede. I enjoyed looking them up and reading them.

Here is another article about crankshafts. Crankshaft Design, Materials, Loads and Manufacturing, by EPI Inc. (epi-eng.com)

I found this report about the Lycoming crankshaft failures from early 2000's. It is very well written report. The team did a really detailed investigation of the failures. Plus, there is a wealth of information about crankshaft manufacturing, including some information on the nitriding...

I can look into it later in a couple of days. My guess is a 4XXX series steel; you are probably right thinking a 4130. Best to be sure… You could ask if they could confirm with a non-destructive method to determine the alloy.

Ouch!!! Seems $2000 is a bit much. I believe the gas nitriding is the best choice since it's a proven process and been around for a long time. I am surprised there isn't an aerospace heat treating facility somewhere near you with nitriding capability. Anyway, here is another article...

The attached article has a nice explanation of the nitriding process. https://fractory.com/nitriding-explained/

Good idea calibrating.

Wow!!! Now that's interesting as well!!! Your welcome.