OS 50 Hyper Problem

[TerryBelanger]

I'm running a Raptor 50 Xero-G kit
OS 50 Hyper
Cool Power 30%
enya #3 plug
MP II
Straight throttle curve

When doing a climbout, when I go to midstick at the top, the engine acts like it wants to quit. smoke goes away like its going lean or something. It's actually cut off several times on me while inverted. I have replaced all of the fuel line including the clunk. Low end needle is between 1200 and 1300 on the ritch side, and the high needle is 2 turns out. The same thing happens weather the governor is on or off. I've replaced the throttle servo. I have removed the carb and cleaned it. Bean having the same problem since I got it.

Getting frustrated, cause it seems I can't fly copters for having to work on them all the time!

Any help would be mutch appreciated

[DavidH]

Is it doing all this from the same gallon of fuel?
If it is then try a different gallon of fuel and see if that corrects the problem.
Fuel can cause problems like this. Just try a different gallon of the same fuel your using.

David

[TerryBelanger]

It's from 2 different gallons of fuel both from the same case. All Coolpower. You probably got the magnum guys grinnin right now.

[~Jeremy~]

I am thinkin , maybe u need the cat eye mod!!? i dunno my opinion! :?:

Jerms

[claysmith]

Hey Tard, I told you I'd help you get your motor running right, come to Adel one day this week after work and we'll get it fixed.

[DavidH]

Don't care what brand of fuel it is. Yes I fly Morgan fuels. Any brand fuel can have a gallon that is just not right. That is why I suggested to try another gallon of fuel.
At contests I know pilots that will have several gallons of fuel. They will fly at least one tank out of every one of those gallons before the event to make sure they are all the same. Then they will mark the jugs that they have used the fuel out of and how it worked.


David

[TerryBelanger]

Right like I said. I tried 2 different juggs of fuel from the same case and experienced the same problem.

[NolanManley]

HEHEHE :D So David, what your saying is, FAI guys are just a bit closer to anal than the rest huh! :wink:

I know, Consistency WINS!

[DavidH]

Nolan,
Yes the ones that are at the top of the game. They are very particular about how they do things <G>. But being particular pays off for them. They have a few titles and trophies to attest to that.

David

[TerryBelanger]

Clay flew it around for me yesterday. Put it through allott of stuff and it never bogged or tried to shut off. Until he tried tic tocs. About the second one the motor acted like it wanted to shut down. We figured maybe it's because the tank was running low so we fueled it up and Clay flew it again. It flew fine for a while, but eventually shut completely off during a tic toc. SO I think Clay has confirmed that there is a fuel delivery problem. He gave me some of the black fuel line to try.

I'll let you know if this fixes it.

[Lee Taylor]

Terry, I don't at all want to jack your thread here, but while we're on the topic of the Hyper 50...
Does anyone who's also had the 50SX and now flies the Hyper, think it has a noticeable power increase above and beyond the 50SX? Was thinking about picking one of these up...but want to make sure it's going to be worth the change.

Terry man, I hope you get the issue resolved with yours. Am eager to see what the problem was, and what you think of the engine once you get it running right.

Clay, are you flying the Hyper? I can't recall from the GA FF...but I thought you did.

Sorry to jack your post Terry!! :mrgreen:

[NolanManley]

Yeah, Clay was rippin with the Hyper. ;)

[Obsessive]

Lee,

I've got both, and the Hyper does seem to have more power. However, the ship with the Hyper also has an airtronics 94758 on the collective, so it's not an "even" comparison.

[claysmith]

Yep, the hyper has more power, I had a regular OS50 in my copter before and it didnt make as much power as the hyper. The hyper is alot smoother running too.

[Dan Lewis]

I have two identical setups aside from the engine. My hyper runs 30-40 degrees cooler on the head than the old os 50 - consistently - when extreming it and does put out considerably more power. I've been running both heli's back to back and I'm totally in sync with the differences. I got this niftly little temp gauge at Mulberry and it's been interesting watching the temp change gradually as it gets more use. Power is a little harder to estimate because there are often many other environmental factors that skew things. Since I run both machines practically at the same time I can more easily attribute the differences to things I control, and power is definately one of the differences in the engines ( I run at 17K rpm - optimum for power ).

BDIS/Clay - did you find the culprit? One thing I've done with my throttle curves on the hyper is take off the top 5%. I found my heli tending to overspeed on long powerouts so I chopped off the top rather than increase pitch (I'm at +-10) to compensate. Essentially, I never go full throttle. Maybe the larger carb and more efficient head cause it to suck a little more air than needed, or can be gotten from the tank, at the top end. What kind of fuel line are you using? I use the standard aerotrend 101 stuff.

[Kinger]

Man, I've heard so many good things about these Hypers lately that it's becoming harder and harder not to purchase one.

[jhodges]

Well, I think I have FINALLY started getting good power out of my regular OS .50. I have a 60B on it and the new Zimmerman Sceadu pipe. Last weekend I started to really lean on the needle and boy it's rockin now ! Still runs cool (don't have a temp gauge) and makes mad power. Only draw back ... it's a gas guzzler now.

I think the old 40E carb robs the engine of alot of potential. I actually like the Zimmerman pipe better than the MP2Q (I had one) ... it's not nearly as "peaky" and makes good power over a larger RPM range. Maybe not quite as much as the MP2 though but hell, my flying is more 2.5D than 3D :lol:

No question the Hyper is the shizznits but I'm gonna burn this one up before I switch !

[Kinger]

I'm running the 60B carb on my OS50 with the MP2Q. TONS of power (especially now that it's cold here in OH), but I wouldn't mind having the lower operating temps of the Hyper and the ease in tuning a two needle carb. Maybe Santa will be nice this year and will bring me one?