Landing gear P47

[T.J]

I have a new FMS 1700 P 47. At set up all was working fine .Then one retract did not drop and will not drop. Any ideas. I tried re-cycling gear no fix.
All connections look good.
TJ

[Ron1950]

do u have a servo tester? hook that retract to it and it may work....servo testers are worth there weight in gold ...get ya some... I used one to track down a bad y connector last week

[T.J]

Ron 1950,
Do not have a servo tester. I by passed all the quick disconnects and went from the retract into rec. No fix.
TJ

[RCjetdude]

I have had the same thing happen on my FMS 1700mm F4U Corsair. The retracts seem very temperamental and I would guess that yours are the same mechanics just not 90 degree rotating. I cringe every time I go to drop the gear expecting one to hang. There are small micro-switches at both ends of the jack-screw travel on a small circuit board inside the housing that seem to have problems after a little harder than normal landing and they stop working for some reason. At least that is what I think. I have taken mine apart and reassembled them and they work again for a few cycles but are not reliable. I end up replacing them as a result. I have not had one do it new out of the box. I too would like to know if there is a fix for this as it can get expensive replacing retracts. If it is new and you got it from MRC they will most likely replace it FOC.

Steve

[T.J]

Steve,
This is a new plane. Not from MRC. Got this one at ForceRC for $360 MRC wanted $460. Could not pass up the deal. I usually buy all my planes from Motion.
TJ

[Grossman56]

I'm thinking that, if its like the 1400mm retracts, the side pieces may be overtightened, that will do it on the 1400 mm, might be the case with your 1700.

Grossman56

[T.J]

Update on P 47 retract. Pull gear completely apart. There are two small micro switch on pc board. One or both are not working. Forcerc is sending a replacement.

[Flyer Phill]

Update on P 47 retract. Pull gear completely apart. There are two small micro switch on pc board. One or both are not working. Forcerc is sending a replacement.

The fix for 1700 and 1400mm retracts is here....http://www.rcgroups.com/forums/showthread.php?t=2062729

[OV10]

The fix for 1700 and 1400mm retracts is here....http://www.rcgroups.com/forums/showthread.php?t=2062729

Hello Phill,
Thanx for referencing that forum thread for others to review. I have been using those controllers as fixes for several years and the thread author(AussieHoppy) acknowledged me as a co-contributor on his update of 31Jan2016.