RunRyder - YS50 Tuning issue in Vibe 50

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JR Heli Vibe - Airskipper - Sylphide - Venture > YS50 Tuning issue in Vibe 50

Dave Yost
Veteran
Location: San Diego Ca, USA

OK, here's the deal. 12 flights since new. YS50 with Hitory pipe. I am running the new JR 7100 RX with the built in gov.

there apears to a very faint pulesing sound at mid stick, mostly noticeable in hover. Inaddition, when I unload the heli in a manuver, the is a very quick loss of power and interuption in smoke(no fuel maybe?) I have tweeked the needle to both extremes and messed with the mid-range. Also swaped the plug. no change.

the Next move is to pull the tank and re-plum it with new tubing.

any input?

Dave

MA Fury Extreme,Vibe 50, JR 9303,YS,Vblades, Don't blame me, I voted for Jimmy Buffet!

07-05-2008 01:18 AM

tchavei
rrProfessor
Location: Portugal

How is the pressure at the end of the flight? The YS tunes diferently of a OS. I would give you my settings but I havn't touched the low needle for almost a year now (can't remember anymore) and the top needle is controlled automatically (between 1.75T and 2.25T).

Loosing power usually is due to lack of pressure (stuck check valve?) or fuel starvation

Tony

--------------------
"Perfection and patience usually walk side by side..."

07-05-2008 01:24 AM

HOMEPAGE

inkspot1967
rrProfessor
Location: cranston ri.

try diconnecting the gov and fly it on throttle curves and see if it still does it or not.

Trex700fbs soon
Vibe50fbs
Next-D Rave
WENZEL CANOPYS
Flybars are for Pussies.

07-05-2008 02:39 AM

Dave Yost
Veteran
Location: San Diego Ca, USA

Thanks.

Today I re-did all the tubing. I pressure checked the tank and all pluming a bucket of water. no bubles. I am going to fly it in the morning. But I am pretty sure there were no leaks before. I did notice that it took a fare amount of pressure to blow throught the one way......is that normal?

I the prblem persists, I will pull the plug on the gov.

More to come.......

Dave

MA Fury Extreme,Vibe 50, JR 9303,YS,Vblades, Don't blame me, I voted for Jimmy Buffet!

07-08-2008 02:40 AM

hockeyrules99
Senior Heliman
Location: topeka KS

A great deal of pressure to blow through the one way...you end up looking like a puffer fish...lol

Good luck Dave!

John

weekend yet?

07-08-2008 03:15 AM

pwood
Key Veteran
Location: Dubai - UAE

Hi guys

I find it easier to suck than blow......to check the one way vaulve.

Paul

07-08-2008 06:53 AM

Popcorn
Senior Heliman
Location: Switzerland

Yes, that's easier...

07-08-2008 08:01 AM

carcrasher
Key Veteran
Location: east coast

Remove the spring from the check valve. TB and JK gave me that tip when I took their 3d class.

07-08-2008 10:54 AM

Droid
Elite Veteran
Location: Deep down in the Southwest- UK

If the one way is hard to blow through, shorten the spring or as carcrasher mentioned remove it. I prefer to shorten it slightly as there is no chance of back leakage that way. Both my 91 SR's and 50 ST's have about 4 coils removed from the springs. If it sticks shut you'll wreck the engine with a lean run.......

Quotes may have been changed for my own amusement

07-08-2008 12:53 PM

tadawson
Elite Veteran
Location: Lewisville, TX

Quote
Remove the spring from the check valve. TB and JK gave me that tip when I took their 3d class.

I got a used one like that. Ran like complete and total crap until I put an "unmodified" check valve back on . . .

- Tim

The more I touch electrics, the more I grow to hate them . . . .

07-08-2008 10:04 PM

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JR Heli Vibe - Airskipper - Sylphide - Venture > YS50 Tuning issue in Vibe 50

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