Есть в наличии засада с ТТ-39 и выход из нее на англ, но я в нем не силен. Если кто может, плз, переведите---не только я буду Вам благодарен
Dies in transition from idle to hover First, to begin with if everything was fine before and with no adjustment changes you now have this problem, then the first suspect is a bad glow plug. If the plug is good and/or this is a new setup then this is probably just a mixture setting problem.
This happens when the high speed and low speed needles are adjusted too far off from each other. A common cause is when someone has the high speed needle set too rich to compensate for the too lean low end needle. When you are hovering, you are using the low speed needle setting, not the high speed. The low speed is a ratio of the high speed, so if you are hovering and the heli leans out, then when you richen the high speed (main needle), you are also richening the low speed. So this kinda accomplishes the task, but not really. Not if you do aerobatics. This also produces the bad effect of the 'rich spot' between idle and mid throttle. As the engine is at idle and is ...lets use lean for this example... then as the throttle is increased, it eventually gets to the transition area where the high speed starts to effect it. If the high speed is too rich, then the fuel flow sees a sudden increase. Too much increase in fuel as compared to air, and it will put the fire out
Note: This symptom can be caused by a bad glow plug. If the glow plug can't get hot enough, this makes the engine overall run rich. The low and high maybe effected differently and cause one end to be a lot more rich then the other and therefore cause the engine to die during the throttle transition.
Note2: I did have the rich spot at 1/3 throttle for the first 4-6 gallons on my TT36. That was before I knew how to adjust an engine correctly, so I can't say this would have eliminated the problem totally, but it should help. The rich spot did fade away. I have not had a rich spot in a very long time and I use the original low speed needle. It has no problem transitioning from low to high.
Заранее огромное Спасибо