I use the following on my Raven I (without primer)
- twist trottle as many times as you wish (5 - 10 times)
- using full collective (pumping then twisting) gives still extra fuel, since it gives extra pumping effect to the carburetor
- when it is cold (below 5° C), it is very hard to flood the carburetor, but don't try this at higher temperatures
- if the heli is protected from the wind I just have a 200 W infrared lamp on the airfilter below for 10-15 minutes, getting it to warm up a few degrees (probably putting the pan to 5-10 °C). This requires access to some form of electric supply. As said by others I avoid risk of contact with fuel or oil by placing the lamp at the side.
- Robinson confirmed me that in cold weather, first start, it is quite OK to wait a few more seconds until engine runs ok, before clutching. The strain on the system when stalling (or trying to avoiding it by reving) is much greater
Last edited by delta3; 21st Jun 2004 at 22:09.