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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › hyper tuning problem. 3 turns out still running hot New motor
09-05-2006 04:23 PM  14 years ago
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nguyen23464

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Suwanee, GA

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hyper tuning problem. 3 turns out still running hot New motor
New motor, 3 gallons old.
The motor wants to run hot no matter where its at. I now have the high needle at 3 turns open!! And it still runs pretty hot. I can leave my finger on there for about 5 seconds though. And any more in and its hot!!

low end: factory set.

Just wondering whats the deal with it. I mean I have been using the same pipe sort of pipe, as always (MP2) and same 30% mangnum.

BTW: This also is a new MP2.

My old hyper was set at 1.5 open and it ran around the same temperature. 5 second touch.

How come things change to 3 turns open? I mean this setting has way too much oil coming out of it and plenty plenty of smoke.
Power is also decent also. Full power climb outs with no bogg.

But, clean up is a big pain!! The thing has so much oil coming out it kept wearing out my gyro tape every flight. I eventually had to mount the gyro up front.

Suggestions would be much appreciated.


Thinking about changing pipes for trial and error.


Jamie
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09-05-2006 04:31 PM  14 years ago
turboomni

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East of the Equator

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Check/ tighten all hex bolts on the head and backplate. Leaks here especially the head can do this and wipe out the motor!
Check the fit of the carb and O ring to make sure it's fully seated in the bore with no leaks. There should also be a black washer under the carb in the bore. Exhaust leak or try your old muffler. Trash in the carb. My Hyper had trash in the carb when new. Plugged filter.
I'm sure others will have more ideas.
Setup is everything, All my heli's can fly far better than I can pilot them
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09-05-2006 05:31 PM  14 years ago
nguyen23464

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Suwanee, GA

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bolts on backplate and head are still tight.
I will have to check the carb today.


whats the best way to clean out the carb? remove needles and flush out with fuel?

thanks
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09-05-2006 05:41 PM  14 years ago
Raffy

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Chicago, Illinois

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Remove muffler and look through the exhaust port of engine to see if there are scratches on the piston. If there are scratches, you need to send it out for repair or warranty service.

Or:

Remove your carburetor from engine. Remove your Hi needle from carb. Connect your fuel pump tubing to the carb inlet port. Turn on and off pump to blow off any dirt that accumulated in the carb.
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09-05-2006 05:45 PM  14 years ago
turboomni

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East of the Equator

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Check those head boltsSetup is everything, All my heli's can fly far better than I can pilot them
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09-05-2006 07:02 PM  14 years ago
nguyen23464

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Suwanee, GA

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I check through the exhaust port last week. Engine still looks brand new.


I change exhaust and recheck head bolts and carb tightness. Im sure its not the head bolts and backplate though. Checked it out sunday and it seemed fine.


I bet its the muscle pipe thats giving me the problem. I am going to change pipes and see what that does.
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09-06-2006 02:30 AM  14 years ago
Raffy

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Chicago, Illinois

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The TT50 muffler works great for with my Hyper.
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09-06-2006 03:02 AM  14 years ago
gftazz

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upstate N.Y. in the Adirondacks

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Try your old Hyper motor carb on it.
Try your other old hyper carb on it and see if it works better and not 3 turns out. You may have a blockage in the fuel system somewhere or a bad inline fuel filter or rotted fuel clunk line. You may also have a blocked muffler pressure line going from the muffler to the main tank. The motor may be starving or sucking hard to try to get fuel into it and that's why you are out 3 turns on the main needle. Try these checks out.
Oh No Someone Please Stop Me Before I Go Broke With This Heli Thing!!
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09-06-2006 04:09 AM  14 years ago
turboomni

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East of the Equator

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I think the TT muffler works good too on my Hyper. But I will say I don't run 2000+ headspeed. I would think at higher rpms the JK Hatori would breath better than the TT because of it's bigger size and design. I can't afford a JK Hatori right now and settle with 1900 headspeed with the TT muffler with no problems. The added Grunt of 30% nitro doesn't hurt either.Setup is everything, All my heli's can fly far better than I can pilot them
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09-06-2006 01:10 PM  14 years ago
PaulJC

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Hertfordshire UK

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The MP2 should present no problems, i have 2 running issue free.

What headspeed are you running?
Re-entering the atmosphere...
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09-06-2006 07:49 PM  14 years ago
nguyen23464

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Suwanee, GA

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running 1950-2000.

I am going to replace all fuel lines just incase. Im sure its not clunk because I just replaced it recently (hayes).

Am also gonna try to richen up low end as suggested.


Jamie
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09-06-2006 08:30 PM  14 years ago
PaulJC

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Hertfordshire UK

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Also go back to basics with it, just run a line direct to the carb from the main tank so heres no header/filter etc in the lineRe-entering the atmosphere...
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09-06-2006 11:14 PM  14 years ago
Disciple4123

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USA

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Also having issues, air leak.
My non-hyp 50 with 60b carb has seen a lot of use today, I placed a camera with live video feed to an ir thermometer directly to the hottest point of the head. With both needles around 1.25 turns on the 60b it was running great, at around 200 degrees, even after several 500 foot full collective climbouts w/cargo I was between 190 and 210 deg. Spent hours trying settings with the temp info live, it was quite revelatory.

However at times it leans or richens suddenly and clearly, temps go to either about 250 or 150 and speed changes suddenly. I have been observing the bolt that holds the carb on, it has some seepage out of the eccentric piece it goes into. When the engine is cooling off it puts out a bubble or two from there even after red rtv'ing it and letting it cure. This is only on the bolt side, no leakage on the nut side eccentric.

This afternoon I put a muffler adhesive and a m2,5 washer under the bolt head of the carb retainer. The washer competely covers the leak spot, the muffler mender goop should fill the remaining thousanth gap. I sure hope so, this heli is otherwise proving to be a good performer. I also took an exacto knife to the fuel tanks' fitting nipples to cut the mold marks off, for a better seal, and I pressure tested the tanks, they can now bulge w/o a hiss at all. Can such a minor clearance gap in the eccentric cause these issues?

Test run tommorrow after the glue dries, hope it works
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09-07-2006 02:32 PM  14 years ago
nguyen23464

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Suwanee, GA

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With a mp2, do you guys have your low end needle set at factory?
I have mine set that way, thinking about richening it up more, to test.

This weekend gonna have to remove fuel filter and change fuel lines.

I wonder if its a bad carb. That would be wierd though, only had 3 gallons through the motor.

Will have to try to clean it out.
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09-07-2006 10:01 PM  14 years ago
nguyen23464

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Suwanee, GA

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cool deal!!

figured it out. I just riched the low end quite a bit. Around 1 oclock. And it allowed me to lean out my high end all the way up to recommened 1.5.

perfect.


I guess the hyper likes to run rich in combination with the mp2.

Hope this helps someone.
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09-08-2006 12:03 AM  14 years ago
Disciple4123

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USA

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Glad you got it fixed.

Mine has a minor backplate leak, considering using teflon tape to fill the gap. If it was me I'd engineer an oring groove in the backplate flange that permits 30% oring compression and metal to metal flange contact. This would seem more robust than the fiber paper gasket they use. Problems, problems, problems
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09-08-2006 02:49 PM  14 years ago
nguyen23464

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Suwanee, GA

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i know. the only bad thing about helicopter problems is the majority of the problems usually require me to purchase something. =/
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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › hyper tuning problem. 3 turns out still running hot New motor
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