CLS447
Platinum Member
- Joined
- Oct 30, 2003
- Messages
- 6,324
- Location
- Reading, PA
- Aircraft
- Air Command 503 & Air Command SxS /EJ2.5
- Total Flight Time
- Aprox 400 gyro
1. Why are the intakes designed to tilt the carbs ? And why ?
2. Which direction should they tilt ?
The only place that I could find the following info was here.......
http://www.ultralightnews.ca/articles/enginesetup.htm
"Inverted installation problem with the Rotax dual carb 503 engines.
If you are using a dual carb 503 in an inverted installation you must turn the aluminum intake manifolds over - once again the engine was designed to run spark plugs up.
On the 503 dual carb the inlets - when the engine is upright have a slight upward incline. When you turn the engine over this incline is NOW down, which necessitates the removal of the intake, turning it 180 degrees and reinstalling it."
NOW....which way is the incline ????????????
Now let me see if I can post a drawing from the Rotax manual......
http://www.leadingedge-airfoils.com/pdf/503info.pdf
The sideways drawing looks to me as though the air filters are UP !!!
2. Which direction should they tilt ?
The only place that I could find the following info was here.......
http://www.ultralightnews.ca/articles/enginesetup.htm
"Inverted installation problem with the Rotax dual carb 503 engines.
If you are using a dual carb 503 in an inverted installation you must turn the aluminum intake manifolds over - once again the engine was designed to run spark plugs up.
On the 503 dual carb the inlets - when the engine is upright have a slight upward incline. When you turn the engine over this incline is NOW down, which necessitates the removal of the intake, turning it 180 degrees and reinstalling it."
NOW....which way is the incline ????????????
Now let me see if I can post a drawing from the Rotax manual......
http://www.leadingedge-airfoils.com/pdf/503info.pdf
The sideways drawing looks to me as though the air filters are UP !!!
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