NEIL F

Thanks, One last question regarding the above, when can I consider the engine fully ran in? Is it based on Litres through the engine or once the engine Low / top ends & transitions are constant, no more fine tuning required? Thanks Regards Neil F

Hi Thanks ill do that !

Hi, Thanks for the comment, as I am using 50:1 oil, I put 100Mls in to 5 liters of Petrol. How do I change this ratio to get 30:1 Thanks Regards Neil F

Thanks Woody, I will try that, i never thought of tightening up the Wheel collets, maybe this coule be the fix for now.... Ill try to get some 30:1 Oil, I will let you know how i get on, Thanks regards Neil F

Posted by Austenrover on 08/05/2013 15:07:23: You need to lean the bottom end to get a lower idle,you will find leaning it increases tickover rpm you then lower your thottle end points or thotle trim if you like.a idle of 1850 should be good with 10 litres of bench time.A 19x8 prop would also help tickover and is considered to be a good mach for the engine and aerobactic models Hi, The prop size im using is 18x10, i will have took look into getting the 19x8. So currently im around 2000 rpm for idle, the lowest i can go in terms of least vibration, i have this condition even without out the throttle arm connected, i mean the throttle is fully closed from the spring tension. thanks

Posted by Dickster on 08/05/2013 14:56:30: Hi Neil, Welcome! My Zenoah 23 in my Pulse pulls it along at tickover. Like yours its a new engine and will not realibly tickover lower. I do not get alot of vibration though, I assume you've tried it with the wings attached? Mine vibrated terribly without - Rich Hi Rich, thanks for the reply, i have only ran the engine on the fuselage without the wings, ill give this a try thanks

Posted by Steve Hargreaves - Moderator on 08/05/2013 14:51:31: Welcome from me Neil......enjoy the site.... Well, all large single cylinder engines will vibrate a fair bit Neil...its the nature of the beast I'm afraid. That said they shouldn't make the model leap around or lead to airframe failure. What is the front end of the model like? some are very lightly built & simply lack the mass to absorb the vibration. Some strategic use of glass cloth & resin or extra wooden support blocks firmly glued around the firewall & engine mounting box will certainly help dampen out any vibration. I assume you've done the obvious things like balancing the prop & spinner...? Hi Steve, Thanks for the reply the front of the firewall i guess is pretty sturdy, i did have to drill a few extra holes to get the throttle linkage etc to line up etc, as I had to rotate the car 180°., maybe this has weakend it?? ive put some additional spone / foam material around the sides of the fuel tank which sits directly behind the fire wall to try and absorb some of the vibration. I did have to drill the Prop to fit to the hub, i did check the balance which seemed to be ok, but I dont have a spinner as yet ! Neil F

Hi, I have just registered with this site so hello to all ! Ive currently just bought a DLE 30cc to install in to my Seagull Edge 540 (180), I have ran around 10 liters of fuel through it @ 50:1 ratio on the test stand.. I am running a 18x10 wooden prop, i get around 2000 rpm during idle and top end peaks at around 7000rpm. the transition throttleing up and down also seems to be smooth, so im not worried about this at the moment! I recently fitted the engine to the plane Firewall etc, and give it the first start up. i found that @ 2000 rpm idle the vibration is quiet noticable throughout the fuslage, and when on concreate the Idle is enough to pull the plane faster then taxiing speed!!! the vibration reduces significantly when i throttle up to WOT. I have tried to reduce the Idle to a lower RPM , via richening the Low speed adjustment needle ( the main idle screw and spring removed!! ). but this seems to make the Vibrations much worse. Im worried about breaking the plane up on the ground. Questions are I suppose : 1) do i need to give the Engine more time to break in? 2) Should a plane of this size be able to idle without moving? ( @2000 rpm ) any advice would be very much appreciated.. Thanks Neil F