I so appreciate your explanations I have a good understanding of what you are saying what mystifies me is that the engine ran so smoothly and well after finally getting it started: no crackling , no surging or any of the usual indications of some problem. well on to another I have her and the stash of other engines I finally recovered from storage so your information has not been wasted at all any interest in my proposed swap of an TD 09 for a .051?

There are other makers of glow heads and adapters to use standard 1/4" -32 thread glow plugs on cox engines, Back in the day Glo Bee had a great reputation.
This brings me to a question : why do all the post in 1/2 A forms recommend using a hot glow plug when we are using high nitro fuel ? the cox fuel is 25 - 35 % and I have not seen any recommend less than 20% nitro though a few have said they can make a particular engine run on 15% .
Another question is with synthetic lubricants being superior in most respects that I know of why not run synthetic with a bit of castor added ?


Again Thanks
Jayd