I have an old sync that says this in the front: R/C USA Safety Sync 2000.

I don't have any instructions of it, would anyone help me, please?

Regards

Absolute synchronization is really not that important. One editor for RC Report magazine took a populr .45 size twin, he ran a TT GP .42 on one side, and a TT .46 Pro on the other, obviously two different power levels. Tweaked both engines, and it flew fine. I don't know much about your synchronizer that you have there.

Hmmm, not to be snotty or anything but if you couldn't answer the man's question, why did you feel a need to reply?

I see you point about answering the man's question, I just get tired of addressing the "Sync" myth...

And I understand your point that sync isn't mandatory. As you pointed out, even mismatched engines will successfully fly a plane. However, unsynced engines (either mismatched in rpm or horsepower) will create excess vibration in the airframe which can result in fuel foaming at the least, and radio failure in worst case. Besides, perfectly synced engines sound soooooo much better than unsynced engines.

Yeah, answering the same questions over and over can get tiring for us experts but that's our albatros.

Harvey