fury expert with os70

[mike15]

hi guys i have a os61 in my fury the now was thinkin of gettin a os70 with a mp2 would i notice a lot of power difference?. and those people which have this setup what do you think of it.
mike

[Splattt]

Mike,

I ran my expert with a 70 and MP2....great power, crappy engine. I blew the piston on it 3 times with two different engines. Frankly I saw more power out of the ys61/sb15 combo than the 70/mp2 produced, alot more reliable going the ys route.

[WillJames]

I would buy a YS-80 in good shape from a reputable person before the 70. WAY bigger power difference between the 61 and YS-80 than the 61 and 70.

[Clintstone]

I flew the YS 61 combo on my Expert and it was one of the best flying Helis I ever Had. Good power and the Heli Flew and was always dependable. The 70 is good also but run the Hatori 70 muffler. Both would be run on 9:3 ratio and with my choice of 690 V Blades. I have even run 700's but the 690's work perfect. Good Luck!!!!!!!!!!! Hughs4569 is running the 70 with the Hatori pipe.

[mike15]

hey guys i am just going 2 buy a ys80. What upgrades will i need so i can put it in my expert i have heard it can be done without much change 2 the heli.
mike

[DavidH]

You will need the 11 tooth pinion for the clutch bell (0864-13). That is 11 tooth pinion with bearing installed. You will probably destroy the old bearing getting it out of bearing block.

Clutch plates 119-120 8.45 ratio
Motor mounts 119-50, 119-51 8.45 motor mounts
0864-13 11 Tooth Pinion with bearing installed.

The above parts will allow you to change from the 9.3 ratio on the Expert to 8.45

David

[Hammertime]

Hi Mike,

I have a nice YS .80 just back from YS Performance with new bearings, gaskets, and regulator diaghragm. Had not flown it for a few months, so sent it back in for a check up. Good as new!

If you are interested, PM or e-mail me. I will treat you right on it.

Tim

[Hammertime]

PS

I also have the mounts, clutch plated, pinion and bell, etc available. converted my first Expert to .80 with 8.45, then .91 with 8.18.

Let me know!