Moderator: Mike Everman
Eric wrote:Larry what the heck did you do to the engine? I have had them run even with 14" tailpipe lengths! Whats your intake length?
Do you have the fuel probe in the right spot? That alone can make a world of difference.
I need to send you one of my SUPER FWE's and then you can mod from their, although they are pretty damn dialed in as is and any gain would be minimal. With augmenters it could replace the dynajet.
I am going to go do some CL flying this weekend, and also run some engines on a teather car so I will let you know how it works out. Ill have lots of pics and videos taken.
ACK! I just noticed you said you pinched the intake! ..... can you un-pinch the intake?
Ben wrote:It had three operating modes, which was unusual. The first I call gruntle, because that's a somewhat onomatopoeic description of it. That's when there is internal combustion, but not at resonance, probably the flame sitting at the inner end of the intake. Second mode was in resonance, but ejecting blue flame out the slot. Third was full blast, and not ejecting flame at the slot. It heated up very quickly in that mode.
Two things need to be done to make it run at full bore without air. First, the intake needs to be unsquashed on the inside. The inner squash effectively reduces the intake flow, but maintains the intake mass, so the engine can't breath properly.
Second, the tail cone needs to be cut off and overlapped with the tailpipe. It does acoustically couple as is, but the small starting diameter of the frustum encourages the flame to escape.
One of the welds holding the cone did not get adequate penetration and had already separated from the cone when the box was unpacked. I don't know if they intend to work on the engine yet this week, but I did not want to cut up one of Larry's engines.
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