What type of fuel comsumption should I expect from this engine to fly the pattern? I have not checked the venturi size, but I suspect it is as BJ supplied it. (??) 5% nitro fuel, 25% 1/2&1/2 oil. 13X6 (or so) prop. 6 1/2 oz. tank work??
TIA
Bill <><
Disclaimer: I am neither a NATS Champion, engine reworker, engine producer, column writer, Hobby Shop owner, *rockeet* scientist, nor otherwise. Just an old Advanced flier. 
Bill
I make 7 min. on 6oz of 10% fuel with a 13 X 6.
LAST EDITED ON Jan-12-04 AT 09:44 AM (CDT) Bill,
ST60 fuel consumption tended to vary pretty widely for us. It really depended on the venturi size and altitude. I used something in the .300 to .315 range in venturi and usually used somewhere in the 6.5 to 7 ounce range in fuel at sea level. When we flew at altitude, I used a bigger venturi and so needed more fuel. Sometimes as much as 7.5oz. But I know others that used as little as 5.75 oz with a .280 to .290 venturi. Just have to do some testing and allow for a big tank if you need it.
I get 5:30 with a .210 and 4 oz tank in my Bi-Slob.
OOPPPSS I don't have a hemi.....
Scott(need to read ALL of the question)Riese;)
Hi Scott,
Did you get my message?
Venturis were great! I also need some more of them, but for other engines.
Thanks!
Bill <><
Disclaimer: I am neither a NATS Champion, engine reworker, engine producer, column writer, Hobby Shop owner, *rockeet* scientist, nor otherwise. Just an old Advanced flier.