Tenker at proffer som Jærva og Karmann her har en løsning på problemet!? Hørt med Kjell Aaen?
Søkte litt på nettet, dette må da kunne fikses?
http://www.tunacan.net/t4/tech/upright.htm#horiz"Horizontal fan
A third option is the horizontal fan. This places the fan laying on top of the engine. Riechert Tuning of Germany offers this conversion(it's on the bottom of the page) utilizing the 911 fan and alternator.
The problem with the horizontal fan conversion is that the twisting of the fan belt makes it susceptible to throwing fan belts. The 90 degree turn necessary to reach the pulley for the fan is the weakness and makes this conversion not as common. This weakness is inherent. I haven't received any reports on people who've run this conversion, so I can only speak from speculation.
After reading my thoughts on the horizontal fan conversion, the late Joe Locicero of Oregon Performance Products sent me this information in an email. The Chevrolet Corvair, built from 1960-1969, featured an air cooled engine and a horizontal fan, and it had the problem I described. Here's Joe's comment:
The belt throwing problem on the Chevrolet Corvair was rectified some time back by a Chevy Agency in Conneticut (Zink Chevrolet, I think). They sold custom bodied Corvairs and also did some racing. The problem is that the belt elongates in proportion to the amount it streches from the resistance (load) pulley to the power source (crank pulley). The greater the length of the belt, the longer it streches. The elongation happens on the right side on the Chev Corvair (idler pulley side) and on the
left side on the Reichert set up since VW's rotates clockwise. The elongated slack side of the belt rises out of the "fixed" pulley groove and the belt is thrown. A new belt is a temporary fix until the fiber plies start to separate. The lighter magnesium fan on the Corvair reduced the fan throwing episodes, but in time as the belt got older, it would start throwing again.
A simple spring loaded idler pulley will temporarily "follow" the belt as the belt elongates.and retains the belt in the pulley groove. I personally tried it on my Corvair Turbo 150 rail in 1970 after I heard about it. Very simple fix. Never threw a belt after that. I'm not sure what Reichert is doing or has done about the problem. The horizontal fan conversion isn't very popular, so the information about it is just as scarce. If you've run a horizontal can conversion on a Type 4 engine, please feel free to contact me and share your experiences. "
Eventuelt kan du ta kontakt med Riechert direkte,
http://www.riechertmotorentechnik.de/Her er kitet:
http://www.maehnz.de/riechertmotorentechnik/de/luftfilt_axialluftgeblaese.htmDen engelske siden deres er hauggammel!
http://www.maehnz.de/riechertmotorentechnik/en/coolingt4.htm
