flyinfool
11-07-2005, 11:27 AM
I think I am finally getting closer to figuring this monster out.
I have an old Xcell gasser with a new G26 3D Max. I have run my 1-gallon of break-in using 5 oz Lawn boy Ash less and am now running 2.5 oz Amsoil in gas. I just replaced the plug that was used for break-in (it was really ugly).
I have machined flat the warped spacer.
I have the fuel lines and linkages setup per Bills recommendations.
The head speed is at 1750 6.43 gears 700mm blades
Issue No 1.
When starting I always get a hot start. I have to hang on to the head for dear life till I can close the choke halfway to slow the engine down. After warming up for 30 seconds I can open the choke and the RPM is normal. The idle remains at a nice low tick over at any time I land and throttle back to idle, throughout the full tank. The high RPM is only for the first 30 seconds after starting a cold engine. It does not happen when starting a warm engine.
Issue no 2.
This is more a matter of me learning how to tune properly. I had my needles set so rich and I thought was good. I started to lean the needles and I started to get a tail kick so I always thought that I was about right, and richened it back up to where the kick started to go away.
But my needles were always at around 1 3/4 to 2 turns. Everyone is always stating around 1 1/4 to 1 1/2 turns.
So yesterday I started leaning the low needle. I got to where the tail started to kick and this time I just kept leaning more and more, and low and behold the tail kick started to get less and the heli never flew so smooth. I am now down to what I am guessing to be around 1 3/8 on both needles. The tail is still kicking at around once every 2 seconds. I will continue to lean it out, but I ran out of daylight and I burned ¾ of a gallon in one day. I am only moving the needles about ½ the width of the screw slot at a time. I do not have a temp gun but the engine is cool enough to put my fingers on the bottom and keep them there. The tuning that I have done seems to have helped issue No 1 a little. The head speed is now solid as a rock through any maneuver no matter how bad I mess up.
Any thoughts as to where I should go from here. Mainly with issue No 1.
I have the only flying gasser in the area so there is no local help available.
There are a few other gassers around but they are waiting for me to figure it out and then teach them.
I have an old Xcell gasser with a new G26 3D Max. I have run my 1-gallon of break-in using 5 oz Lawn boy Ash less and am now running 2.5 oz Amsoil in gas. I just replaced the plug that was used for break-in (it was really ugly).
I have machined flat the warped spacer.
I have the fuel lines and linkages setup per Bills recommendations.
The head speed is at 1750 6.43 gears 700mm blades
Issue No 1.
When starting I always get a hot start. I have to hang on to the head for dear life till I can close the choke halfway to slow the engine down. After warming up for 30 seconds I can open the choke and the RPM is normal. The idle remains at a nice low tick over at any time I land and throttle back to idle, throughout the full tank. The high RPM is only for the first 30 seconds after starting a cold engine. It does not happen when starting a warm engine.
Issue no 2.
This is more a matter of me learning how to tune properly. I had my needles set so rich and I thought was good. I started to lean the needles and I started to get a tail kick so I always thought that I was about right, and richened it back up to where the kick started to go away.
But my needles were always at around 1 3/4 to 2 turns. Everyone is always stating around 1 1/4 to 1 1/2 turns.
So yesterday I started leaning the low needle. I got to where the tail started to kick and this time I just kept leaning more and more, and low and behold the tail kick started to get less and the heli never flew so smooth. I am now down to what I am guessing to be around 1 3/8 on both needles. The tail is still kicking at around once every 2 seconds. I will continue to lean it out, but I ran out of daylight and I burned ¾ of a gallon in one day. I am only moving the needles about ½ the width of the screw slot at a time. I do not have a temp gun but the engine is cool enough to put my fingers on the bottom and keep them there. The tuning that I have done seems to have helped issue No 1 a little. The head speed is now solid as a rock through any maneuver no matter how bad I mess up.
Any thoughts as to where I should go from here. Mainly with issue No 1.
I have the only flying gasser in the area so there is no local help available.
There are a few other gassers around but they are waiting for me to figure it out and then teach them.