Originally Posted by Basil Yousif
Digital Servoless Retractable system (1pc) 54g
I have installed these in a .46 Size World Models P51. I installed them with some
HK oleo struts that have a spring. When the struts are collapsed into the wing the
electric retract doesn't reach the full travel but very close. It's only a small
amount of the last bit of travel of the electric retract. Is that okey or will it
harm the electric retract not to be all the way at the end of the strut up
location. There's no buzzing sound coming from them and they seem to work fine.
Hi Basil ,
The short answer is , Yes , You are fine and will not damage your retracts if they don't retract 100% of their travel ,
The long answer is ;
All of these modern "servoless" retracts operate the same way . Namely , there is a circuit that monitors the motor's current , and when the circuit "sees" the rise in current that indicates the retract has reached it's end of travel it cuts off the current to the motor . Now , before there was such transistorized miracles , there likely would have been "limit switches" at each end of travel and until that limit switch was actuated by the retract the motor would draw power attempting to drive the arm to contact the switch . This would have been bad and resulted in drained batteries/burned motors ... But , since the circuit "sees" nothing except the rise in motor current when the end of travel is reached , it matters not where the end of travel actually is , the stopped movement and current rise/subsequent cutoff can happen anywhere within the range of motion of the gear .
I hope that made sense of it for ya