Webra 1.60XP -Mixture

[Jerry Budd]

I had to switch to a 12 oz tank to make weight at the Nats (I also 
took my switch out - did you know a JR switch harness/charge jack 
weighs a little over an ounce?) and I was concerned about running out 
of fuel in the Masters pattern.  So I went out to the practice field, 
set the timer, and flew a regular masters flight in some pretty 
strong wind.  When I landed I had 40% of a tank left (I turned the 
E=MC3 on it's side and looked through the canopy) which is ~4.8 oz of 
fuel (7.2 oz used).  I checked the timer and it read just a little 
over 7 minutes so I'm using about an ounce of fuel per minute of 
flight time.  I've checked it several times since then and always 
seem to get the same answer so I'm confident it's right.  Pretty 
miserly if you ask me!

I use the APC 17x12 standard prop as it gives the best combination of 
vertical pull and downline braking.  I tried the new 18x10 (xpw?) 
prop with the rounded tips last weekend and turned it just under 8100 
rpm.  It flew pretty well, initial upline acceleration was a bit 
quicker than the 17x12 but the downline braking was a little better. 
Couldn't tell about the noise since someone was running a motor next 
to us.

Re: the heavy E=MC3.  I did a courtesy weigh-in upon arrival and 
found I was 18 grams over the weight limit.  I took 2.3 oz out of the 
airplane and rechecked (twice) exactly at 5kg.  Go figure?!!

Jerry

>Having flown the Webra 145 for 2 years in Masters(Focus and 
>Temptation), it is no problem for Masters. For FAI the Focus(10 lbs 
>- 5 ozs) definitiely needs the Webra 160. A  10 lb Temptation(which 
>I had), definitely would have been able to handle FAI on the 145. 
>Having said that, my two new Temptations will have 160s in them when 
>they become available. Can never have enough power. The nice thing 
>about the 145 though is its fuel efficiency. I can just about 
>squeeze in two Masters sequences most of the time on 16 ozs of 
>Powermaster 15/16.
>
>Props of choice: 16.5X12W and 15.5X12.5W for Focus and 16.5X12W for 
>Temptation.
>
>At the Nats, Jerry Budds, on the heavy side, EMC seemed to move 
>around the sky really well with the Webra 160 in it.
>>


-- 
___________
Jerry Budd
mailto:jbudd at qnet.com
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