Originally Posted by thegoat
Ive broken spokes, bent the lips and cracked the rim straight though on alloys. All lost air quickly. Steel survived a lot longer, but that castor oil trick Im going to have to try.
Old coach - its castor oil (like my mom gave me when i swore), not castrol oil, like engine fluids right?
Yes, it's casTOR oil. Extracted from beans. The Castrol name came from the far distant past when rotary aircraft engines were lubed with casTOR oil mixed with the gas, like a common two-stroke chainsaw engine. For an interesting look at what is today a strange engine design, look up Rotary Engine on Wikipedia. One Sir Charles Wakefield's company was the first large commercial supplier in England, and he eventually renamed his company Castrol.
Until synthetics came along, we motorcycle racers used the same mix. Castrol had a Type R oil that was the most common bean oil used in my day. It looks from a quick search that Castrol may not sell it anymore, except in Australia, so you may have to fall back on drugstore oil. EDIT: http://www.klotzlube.com/radio_control_.html BeNOL
is what you want. All their other oils are blended synthetics.
WW1 pilots who flew behind those oil-spewing rotary engines tended to ingest some of it, with the usual effects on the lower G.I. tract. Legend has it that they drank large amounts of blackberry brandy as an antidote.
p.s. if you DO find some castor bean engine oil, a bit mixed into your two-stroke engine fuel makes a most delicious smell, but don't let it stand around. Bean oil degrades very quickly in gasoline. "Use no mixed oil over 8 hours old" was our rule. Also never ever
mix bean oil with petroleum oil. It will congeal into a gloppy mess that will clog oil lines and oil pumps. I don't know how many guys racing vintage motorcycles with me in the 1980s learned this to their intense sorrow.