YS FZ 63S #2 After Rebuild

The second video after rebuild. Replaced a leaking throttle barrel seal. APC 12 x 8 prop, OS F glow plug and Omega 15% fuel. 10,000 high / 2,220 low RPM recorded. If you are going to run this fuel in a YS engine it is recommended to have Klotz synthetic added to bring the oil content to 20% per YS specs.

[@Clownworldmatrixviewer]

Excellent engine! I have one in the original box ,never run. I’m getting close to retiring and my plan is to finally build all the many planes that I’ve collected over the years. I think I will put this YS .63 in my Graupner extra 300 L. 🤠 thanks for sharing your video. I do have foamy electrics because they are so convenient to fly but I still love these old nitros. I probably have 25 kits to build and 50 engines on the shelf.😅

[@MrFlyonenow]

Thats awsome. You can never have too many planes. Looks like your retirement is going to be fun! Best of luck!

[@kmlvr89]

4:28 😊🤗