Hi Martin Being electric and only 12V it would be slow to heat up the carby in time to prevent an engine out. I would suggest it is designed to be heating all the time. I have a precedence, my IS28-M2 motor glider has a heating block between the carby and the manifold which is heated by engine oil and therefore is 85C all the time (once the engine is on temperature). I have considered bypassing the heating block to reduce the inlet air temperature, and thus increase HP, but have not as it is a certified aircraft and insurance would probably not pay if I had an accident with it bypassed.
Regards Barry Kruyssen k...@bigpond.com http://athertonairport.com.au/kr2/ -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf Of Martin Pearce Sent: Thursday, 24 February 2011 7:19 AM To: kr...@mylist.net Subject: KR> Carb heat question I have a Holley 5225 fitted to the EA81 Subaru motor in the KR2 I am working on. The aircraft came from Canada. Question. This engine has an electric carb heat system that heats a pad fitted between the carby and the manifold. Is this likely to be a good for preventing carby ice or is it more to vaporize petrol when starting the engine on a very cold Canada morning? I have never seen a similar system anywhere before and would appreciate any thoughts .... Regards Martin Martin Pearce - KR2 with Subaru EA81 + KR2 S with GMH Saturn - Both in my garage, neither registered or flying in Au ---yet! rocketdri...@optusnet.com.au
