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Old 10-20-2008 | 04:46 AM
  #116  
serious power
 
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From: wexford, IRELAND
Default RE: YS-170CDI Flight Report

Ah thats ok Aerobear.
I'm not your typical 'egghead' at all. Usually having the facts helps. A little knoledge etc.
It's just that people are sometimes misled into believing that using high nitro levels is a waste of money.
These can then endure engine problems for years, in fact it becomes normal for them.
The message is that most engines designed for pattern use are set up to exploit nitro at fairly high levels, 15& -40%.
A couple of extra details ; Methanol's boiling pt =65'C and flash pt = 11'C.
;Nitromethane's boiling pt = 102'C and flash pt = 35'C.

Brian