Turnigy Basic 90 degree All Metal Tricycle Retract System 3mm Wire Leg's, foam wheels + Steering Nosewheel, ideal for lightweight EDF models.
Turnigy metal Series electronic retract systems feature an all metal construction and advanced micro controllers with an integrated circuit to automatically stop the retract and recover from jamming problems. The integrated circuit also protects against over-current draw.
Wheel Size: 41mm (Mains) 30mm (Nose)
System weight: 141g (Inc all wires and hardware)
AUW Load: 2.0kg
Current draw: 0.32A for 2 sec
Hmotnost ( g )
Very slow retracts, like real jets!
Only 140 grams all together with wires and all!
A must for a true scale builder!
Legs are a little under 2.5mm thick, not 3mm as quoted. They work fine, taking a gentle 4 or 5 seconds to go from one motion to another and the anti jamming cut off works well. The mechanism is very long though (which gave me a problem) and after a few retract sequences it all gets quite sloppy, allowing the wheels to rattle up and down about 1/4" (6mm) or so when retracted. Couldn't get the steering to work withut ripping the steering servo out so I just fixed the nosewheel dead ahead by tightening the grub screw.Great working retracts, especially for the price. Also love how they retract nice and slow for realism.Retracts are good with small shaking only, includes end switches so after movement it turns off the motor current, in case of overcurrent (mechanical issue) it stops motor after several seconds. Mounting is ok.
The bad side os story is that the front wheel steering in not mechanically ok, need complete rebuild of steering lever to opposite direction as it is now. Not easy but feasible.
Ordered these to put retracts in my GWS A4 EDF.
They seem pretty reasonable, and operate quite well (fairly slow).
The main wheel struts are simply held in via a grubscrew, which means the wheel legs etc can be easily replaced if the get damaged.
The steerable nose wheel has a C-clip on the end of the wire leg, to prevent it falling down. This makes it somewhat harder to replace.
The other thing that people need to be aware of is that the steering 'system' requires the nose wheel to fold up towards the servo. As my A4 will have the servo behind the retract I'll have to look at inventing something to handle it.
And what is it with the Chinese and screws?? All of the screws on the units were loose.
I suspect it'd be just slightly annoying to have them vibrate apart in flight. Check them and tighten them before use, guys!