New US engine USQ57B
12-23-2004 | 11:53 PM
#26
Senior Member
My Feedback: (4)
RE: New US engine USQ57B
HiRCflyer...A G38 mag coil will replace the points and coil, will work great but weighs the same..$20 plus shipping if you want one...I think C&H has the conversion covered, check their website...
The metal velocity stack is a new thing, maybe they haven't run into the problem yet...
We tried forcing air into the carb on a GT74 many times on a Kelly formula One giant scale race plane a few years ago...It needed to be so rich to take off that it was more trouble than it was worth, and never did run quite right...
The Herbrandson twin drone engines I use on the Unlimited racers was originally a pusher, with the carb intakes facing forward right in the airstream...There was a smalll brass tube in the carb venturi that went into the carb cover that was otherwise sealed..The diaphragm had the same air over it as coming into it..Worked well, but probably no performance increase..
I remember Klaus at the races with his audio tach in his ear, check rpm on the Aerrow 200 twins...I borrowed it for a while but sent it back when we got onboard data loggers, way more reliable and also check cylinder or exhaust temp and air speed.....We've come a long ways
The metal velocity stack is a new thing, maybe they haven't run into the problem yet...
We tried forcing air into the carb on a GT74 many times on a Kelly formula One giant scale race plane a few years ago...It needed to be so rich to take off that it was more trouble than it was worth, and never did run quite right...
The Herbrandson twin drone engines I use on the Unlimited racers was originally a pusher, with the carb intakes facing forward right in the airstream...There was a smalll brass tube in the carb venturi that went into the carb cover that was otherwise sealed..The diaphragm had the same air over it as coming into it..Worked well, but probably no performance increase..
I remember Klaus at the races with his audio tach in his ear, check rpm on the Aerrow 200 twins...I borrowed it for a while but sent it back when we got onboard data loggers, way more reliable and also check cylinder or exhaust temp and air speed.....We've come a long ways
12-24-2004 | 04:10 PM
#28
RE: New US engine USQ57B
RCIGN1- Ok I am about show everyone how little I know.............You state the G-38 coil will replace the points and coil, on the 35, will I still need the Flywheel? I'm looking to be able to remove that.
01-18-2005 | 07:57 PM
#30
Senior Member
My Feedback: (18)
RE: New US engine USQ57B
Dear Michel, Us 57 cc
Some testing results so far:
18x10Clark 8200rpm
20x10Clark 6400 rpm
20x12Clark 6000 rpm
24x10Zinger 5400 rpm
I hope this helps and let me know, what you think about this performance.
100cc twin will make it or the 150 twin.
24x10Zinger with 7200-7400rpm with the 100cc single.
If you have any more questions, please write me again.
Respectfully yours,
Hanspeter Naef
USQ Aero, Inc.
400 Cheryl Ave.
Mechanicsburg, PA 17055
Tel: +1 717 343 1529
Fax: +1 717 790 9642
Web: www.us-engines.com
Some testing results so far:
18x10Clark 8200rpm
20x10Clark 6400 rpm
20x12Clark 6000 rpm
24x10Zinger 5400 rpm
I hope this helps and let me know, what you think about this performance.
100cc twin will make it or the 150 twin.
24x10Zinger with 7200-7400rpm with the 100cc single.
If you have any more questions, please write me again.
Respectfully yours,
Hanspeter Naef
USQ Aero, Inc.
400 Cheryl Ave.
Mechanicsburg, PA 17055
Tel: +1 717 343 1529
Fax: +1 717 790 9642
Web: www.us-engines.com
