My Diamond Dust compared to my Shrike
I have a Diamond Dust with a JET FIRE 50 and a 10 size Shrike with a OS 32 w/tuned pipe. After flying both, my Shrike always seemed faster. My friend just finished a Shrike with the same set up as mine. Last night we put my DD and his Shrike up at the same time. The shrike was faster. So I was probably right with my shrike being faster. Now we have to put my shrike up against his. I just never thought the Shrike would be faster. What RPM's should I be getting on the ground with the JET FIRE 50?
Later, Craig |
RE: My Diamond Dust compared to my Shrike
ORIGINAL: ckoerner What RPM's should I be getting on the ground with the JET FIRE 50? Later, Craig Some of the other DD pilots on here can give you some of their specifics. In general, it should turn "over" 17,500 rpm on the ground with a regular 9x8 prop. Usually the FIRE engines for DD applications are set up for higher rpm. One FIRE .50 shipped lately was set up turning an APC 8.8x8.75 over 19K rpm. A few of the engines were set up for super-high rpm turning the 7.4x8 qm40 props. But on the Whiplash and DD the D-1 serise Q-500 props seem to work best. Let me know where you are with it now (prop, rpm, fuel) Bob |
RE: My Diamond Dust compared to my Shrike
ORIGINAL: bob27s ORIGINAL: ckoerner What RPM's should I be getting on the ground with the JET FIRE 50? Later, Craig A few of the engines were set up for super-high rpm turning the 7.4x8 qm40 props. But on the Whiplash and DD the D-1 serise Q-500 props seem to work best. Let me know where you are with it now (prop, rpm, fuel) Bob I will start out with unmodified Q500 props, but I think something extra can be squeezed out of the combination with some slight prop trimming... we'll see. IMO the Dust does not need a "huge" prop like a sport 9x8, but since I haven't tried it, it is just that: an opinion. Again, we'll see... I was/am aiming for the maiden this weekend, probably sunday... don't know if I'll get there. If not this weekend, then the next. I will get back to you guys with my findings. |
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