ORIGINAL: PaulD

I tried to use the FEJ one on the Vieprjet I built. When I bought it I thought that it was an AP one but was somewhat mislead.

The FEJ unit I had was not programmable and had fixed delays. It also had really poor air flow. This combined with fairly large gear on the Viperjet and the gear moved too slow when retracting. This wouldn't have been as much of a problem if you could set the timing for the gear doors closing....

The two valves may look the same but the FEJ is just a copy and not a very good one.

PaulD