DZ hesitation

[Troy Newman]

Turn the pump IN 1/8th of a turn and try it again. If it still happens then go another 1/8th.

Your pump is too lean! Not making enough pressure. Once you adjust the pump. Then re-set the top end. The HS needle is very dependant on the pump pressure. Richer on the pump (more pressure) requires a leaner top end needle. 

TN
  ----- Original Message ----- 
  From: Marty King 
  To: discussion at nsrca.org 
  Sent: Friday, September 03, 2004 9:34 AM
  Subject: DZ hesitation


  I have an Angels Shadow with a 140L that I use as my primary and another Shadow with a DZ as my backup. While practicing with the DZ no matter how slowly I roll on throttle I get a momentary hesitation almost like the engine is going to quit and then it catches and runs. As long as I do not go below half throttle I have no hesitation in response. But any increase from idle to *.* I get a momentary pause and catch. The fuel system is a supply with a foam pickup and a vent over the side. Not flying the DZ all the time and having imediate response from my L makes me question if this is normal for the DZ's or if there are things I should try. I use 30% PM pattern blend in both. Is this the issue for guys using heli fuel or the DZ blend?

  Thanks,

  Marty King
  NSRCA 2551 D-4


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