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Old 05-08-2008, 01:09 AM
  #7  
chris de jon
 
Join Date: Feb 2003
Location: australia, AUSTRALIA
Posts: 54
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Default RE: ASP 180 FS will not rev above 7800

Hi and thank you for responding.
I did not reply sooner as I had more testing to do.
Asmund:
Your 180fs figures are very impressive.
You said no Nitro gave you 8100 on 18x6 and a Volk 17x4 at 8800
As mentioned in my post I am only able to get 7800 to 8100 on a 16x8 It is a Master Classic with no nitro.
I ran a Volk 17x4 and got no improvement at all.
Could you please let me know the basics of your setup. So that I may compare.

Tank size I have changed from a 20 Oz to a 16 oz in case draw was a problem, and also had no improvement
Fuel I am running 16% cool power and 2% castor
How many turns of the main needle is your motor
My main needle is just over 1 turn out
My LS needle is about 3 turns out.

I have reset the tappets and checked them many times .102mm is tight .
I have now replaced all the O rings in the needle and manifold.

I have blown out the jets with a syringe
A new F series plug did not change anything.
I mixed a new batch of fuel and that also has not altered anything

As mentioned I do not run Nitro as it is hard to get here.

I was under the impression that nitro only improved transition and idle. These are both pretty good. It is top end I am after. Does nitro improve top end?

This is not a new installation it has about 50 flights now and was fine until a week ago when it just sagged off. My model likes the 16x8 and flies well at about 8500 so that 600 or so that I have lost really makes a difference.

I am coming to the opinion that maybe the tolerances on my motor are not as good as yours as nothing seems to improve it.

I would love to know what has caused the change and any more input to try to improve the engine performance would really be appreciated.
Cheers
C de J