Resasi
Gold Supporter
- Joined
- Jul 2, 2007
- Messages
- 9,094
- Location
- London/ Kilifi Kenya
- Aircraft
- Gyrs, RAF 2000/Mgni/Bnsn/Hrnet/Mrlin/Crckt/MT-03/Lyzlle AV18-A/Prdtor. GT-VX1&2, Pax ArrowCopter
- Total Flight Time
- 100+ gyro, 16,000+ other
Just finished the full Rotax run in procedure on our new 503.
I had been advised by the guy at the Warp factory that between 9-11 degrees should give us around 310 lbs of thrust on a DCDI 503. ( was he blowing smoke???
With the prop set at 8 degrees we were unable to get over 5900rpm max throttle and this gave us around 230lbs of thrust which didn't seem anywhere near the figures I was expecting.
I have spoken to Lockwood this morning. Their 2 stroke rep confirmed that the RPM was too low and that a lower/finer pitch should bring them up, and that there should have been no harm done to the engine
I am now going to reset/ de-pitch the prop to achieve 6500RPM and see what thrust I get.
I have been told that this procedure can be fairly critical but was wondering if any of you have had either experience with this combination or have some advice or comments on best way to get the best available thrust.
I had been advised by the guy at the Warp factory that between 9-11 degrees should give us around 310 lbs of thrust on a DCDI 503. ( was he blowing smoke???
With the prop set at 8 degrees we were unable to get over 5900rpm max throttle and this gave us around 230lbs of thrust which didn't seem anywhere near the figures I was expecting.
I have spoken to Lockwood this morning. Their 2 stroke rep confirmed that the RPM was too low and that a lower/finer pitch should bring them up, and that there should have been no harm done to the engine
I am now going to reset/ de-pitch the prop to achieve 6500RPM and see what thrust I get.
I have been told that this procedure can be fairly critical but was wondering if any of you have had either experience with this combination or have some advice or comments on best way to get the best available thrust.