smgates
 
 
  Joined: 13 Apr 2019 Posts: 13 Location: Perth, Australia
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				 Posted: Wed Apr 05, 2023 11:18 pm    Post subject: Kolb-List Digest: 2 Msgs - 04/05/23 | 
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				Hi Jay,
 
 I'm using a 503 on my Firestar II with 1/4" ID hose and it seems just fine
 over about 17 hrs flight time so far.
 
 I got rid of the bulb because I was concerned about the very problem you
 mentioned, and put in an automotive electric pulse pump, which I mostly only
 use to prime/start the engine because the Rotax pulse pump is adequate for
 normal flight in my experience so far - also makes a much tidier
 installation not having the bulb accessible to prime.
 
 Good luck with it,
 Steve
 
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