Without the usual dissertation .. Many good points mentioned and my 2 cents...

#1) Apply Jasco thick, only once, and in the same direction. Why? Dunno, but it does help!
I usually let it set until it's dry, then papertowel it all off, then rinse & repeat.
Note; I always scrape off any decals, stickers and other surface coverings before Jasco-ing.

#2) HEAT; sure it works, but what a stink!!! The pressure sandblaster I use is $89 at Harbor Freight. Sand in #60 size is $8.79 for 100 lb. bag. That will usually do 2 frames that have been Jasco-ed already.
And it gets every last nook & cranny CLEAN!

Downside is that you really should primer right away!!

For blasting bike frames, a 20 gallon compressor will supply enough air.

#3) Paint & Epoxy Remover works on ALL readily available finishes, INCLUDING powdercoating!
That's what powdercoaters use if they are re-doing a powdercoat job.
Sand or media blasting powdercoating is a BAD IDEA! Powdercoating is made to RESIST abrasion.

Just some notes on stripping. Now I'm going to go lay some Jasco on this old Frejus, so I can save the beautiful chrome.

Good luck with that!