TT Pro 1.20 Question

[Paul Lawrence]

I'm just experimenting with what I have laying around.
I had previously flown this plane with a YS .91 and it just didn't have the power to fly Intermediate well.
I deduced that 2M planes were being flown with 1.70's at 10 - 11 lbs, so the 1.20 would have comparable power on a 9 lb plane.

  ----- Original Message ----- 
  From: Rcmaster199 at aol.com 
  To: discussion at nsrca.org 
  Sent: Tuesday, June 29, 2004 7:35 PM
  Subject: Re: TT Pro 1.20 Question


  It sounds like a pumped set-up. The tank vent should be left open during operation, to allow air to enter as the fuel is used up. The caveat is that the vent will often syphon fuel out if the vent is out in the slip stream. I use a YS check valve to allow air in but no fuel out.

  The 2 stroke 120 engine type should be able to turn a 16x10-11;  17x9-10 fairly well in the usable rpm range we need.

  Why such a large engine on such a small model?

  MattK



    Subj:TT Pro 1.20 Question 
    Date:6/29/2004 6:46:38 PM Eastern Daylight Time
    From:pwl45 at yahoo.com
    Reply-to:discussion at nsrca.org
    To:discussion at nsrca.org
    Sent from the Internet 



    I'm experimenting with a Thunder Tiger Pro 1.20 and wondered if anyone knew
    how the tank should be vented. The manual says to run the fuel pickup line
    to the inlet on the pump and connect the pump outlet to the carb. Then it
    says, "Never to connect the tube from muffler/pipes pressure nipple to fuel
    tank with this pump system." I'm thinking I just need to run an open vent
    line. Does that sound right?

    Also, any advice on what prop to run?
    This engine will be in a Tai Ji .60, runnning Pro Pattern 20%, weighting 9
    lbs and running the TTR 9712 pipe.



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