RE: How hot exactly do you think the intake air has to be to prevent carb icing?
Serge, I don't know exactly HOW hot the air has to be. I can only tell you this. I purchased one of those "Cessna" type heat muffs, CESS-2 in the Wicks catalog I put it around my exhaust pipe and ducted it into the heat box. When I had the engine running and opened the gate, no RPM drop. So I wrapped a large spring, like those you use on your screen door, only maybe a little larger, around the pipe under the muff. Now when I opened the gate, RPM drop as you would expect. EGT runs at 1350 degrees and CHT runs at 350 or so..... See N64KR at http://KR-Builder.org - Then click on the pics Daniel R. Heath - Columbia, SC da...@kr-builder.org See you in Mt. Vernon - 2004 - KR Gathering See our EAA Chapter 242 at http://EAA242.org -------Original Message------- From: serge.vi...@ate-international.com; KRnet List-Post: krnet@list.krnet.org Date: Wednesday, March 10, 2004 4:46:55 AM To: 'KRnet' Subject: RE: KR>Carb heat Really? How hot exactly do you think the intake air has to be to prevent carb icing? I thought as long as it was above icing temp, it would be fine? I guess I should rather weld a pipe along a portion of the exhaust as an air source? In that case, my only problem would be to find some ducting material with a small diameter that resists the heat! -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On Behalf Of Dan Heath Sent: Wednesday, March 10, 2004 00:57 To: kr...@mylist.net Subject: Re: KR>Carb heat RE: Opinions? Serge, That I have plenty of.... I am concerned about not getting enough heat unless you come directly off an exhaust pipe. Another concern that I have is with the sliding door, in that it may be prone to bind up, where a door pivoting on a post or hinge, most likely will not. See N64KR at http://KR-Builder.org - Then click on the pics Daniel R. Heath - Columbia, SC da...@kr-builder.org See you in Mt. Vernon - 2004 - KR Gathering See our EAA Chapter 242 at tp://EAA242.org -------Original Message------- What I plan to do is: - Make the pick-up point at the rear of the bottom baffling plate (this is a VW engine, so there is a baffling plate running under the engine), on the side, opening 90 degrees from the airflow. The 90 degrees is because I want to avoid building high pressure in the carb. - Close the pick-up point with a small sliding plate, that would be spring loaded. The control will be a push-pull cable, same as for a choke. Serge Vidal _______________________________________ to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html _______________________________________ to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html .
