Paul De Tourtoulon Posted September 27, 2021 Share Posted September 27, 2021 This is my Wren 80 it starts slowly and hovers around the 9.000 / 10.000 rpm mark, I start it and then when accelerating from Idle it flames out at around 100.000 rpm, here are my settings, some were modified from new as when I bought iit it would not start ! Lien vidéo https://youtu.be/Kfr-ejQMNsU Pump start point 030 ( tried 026 and up to 032 ) Pump start ramp 004, then 005 and at 006 the same glow 6.5v ( lipo 7.4 2s 2400mah ) low batt voltage 6v starter power fuel ramp70 rpm 100% 26.000rpm rpm off 30.000 rpm reconnect 26.000 rpm ign kero 6.000 pump power ign kero 034 engine mini flow 30 egt end pre heat kero 200° ( was 180° ) rpm preheat kero 9.000 rpm fuel ramp kero 22.000 preheat fuel 035 ign timeout 25.5 acc delay 008 deceleration delay 006 stab 100 pump limit 752. I have posted another video with its flame out if anyone can help me,,, Ecu Xicoy 10 Quote Link to comment Share on other sites More sharing options...
dave windymiller Posted September 27, 2021 Share Posted September 27, 2021 Whats the error msg on the fadec? Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted September 27, 2021 Author Share Posted September 27, 2021 At the end of the video,, "Acceleration Error" Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted September 27, 2021 Author Share Posted September 27, 2021 For some raison youboob have blocked the commentaries, but I did get a private message that Wrens advice was to push the acc delay from 008 to 017, i did but slow and unstable so I put it to 010, that seems ok. I also dropped the End preheat kero from 200° to the factory setting of 180°, but no difference still staying for ages at 9.000 rpm,, Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted September 27, 2021 Author Share Posted September 27, 2021 Stuck at 9.000 rpm 'preheat', how do I speed it up ?. Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted September 28, 2021 Author Share Posted September 28, 2021 I programmed it down to 8.000 rpm, but it just 'hovers' at 8.000 so no better there. Hasn't anyone in the UK got a wren turbine ?. Quote Link to comment Share on other sites More sharing options...
Rob Buckley Posted September 28, 2021 Share Posted September 28, 2021 Talk to Paul at https://www.turbinesolutions.co.uk/ they took over Wren Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted September 28, 2021 Author Share Posted September 28, 2021 Thanks it seems sorted,, thanks to a couple of 'followers' I changed the rpm preheat kero to 10.000rpm and the egt end pre heat to 120° ( advice from Gaetan at the french kero forum ) and you will see that all went well, maybe a flight in the afternoon thanks,,, i also changed the Acc delay from 008 to 010 pump start point 030 pump start ramp to 005 egt end preheat 120° preheat fuel 040 https://youtu.be/F5qj0tuG7_8 Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted September 28, 2021 Author Share Posted September 28, 2021 A couple of flights and both went well, Paul from Wren contacted me later this afternoon and explained what was happening, and gave me a new set up, I will try them out tomorrow. Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted September 29, 2021 Author Share Posted September 29, 2021 All sorted, Paul from Wren was very helpful, ?he gave me new settings that worked a treat, a couple more runs for the ECU to learn the idle and back to safe flying.? if anyone wants them posted,,, Ask,,, Quote Link to comment Share on other sites More sharing options...
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