Just got new clutch Installed in Spec.

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RunRyder	RunRyder

Home › ✈️Aircraft › 🚁Helicopter › Gasser Model RC Helicopters › Other › Just got new clutch Installed in Spec.

09-20-2009 10:05 PM 11 years ago

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smallplanes

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Just got new clutch Installed in Spec.

Well after a few hours i got it back in there everything looks good. I hope it works out good for me this time. Thanks again Brain and Ron.

Thanks for your FAST help

Spectra G 26cc
Jewel
Bat 27cc
Trex 700<br

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09-20-2009 10:20 PM 11 years ago

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Mike545

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gettysburg, pa

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Im putting mine back in, in the morning, mine was shot, new liner. My tail problems are still there, found two problems today. Im hoping im wining the battle."always feel thankful..... never entitled"

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09-20-2009 10:52 PM 11 years ago

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smallplanes

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Well i just got thru with a 15minute flight with mine(no canopy) it was running pretty smooth as it did the first time but i had it to drop out of a hover to the dirt two or three times. It just lost all power and went to an idle i don't really know what to do or adjust. I'm still running the 645 carb but i have a 643 in the bag new i just thought if i could get the 645 to run good i would just use it because it has a choke. I'm still having to go to near half throttle for the blades to lock in could it be i have my thr curve just to low or what? I does sound very low head speed when hovering but i'm not sure what it is. I have a Skytach but no one to hold it. How many rpms does it take for the clutch to lock? I need to cut my canopy also.

Thanks for any help
Spectra G 26cc
Jewel
Bat 27cc
Trex 700<br

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09-20-2009 11:26 PM 11 years ago

0Post 4

Mike545

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gettysburg, pa

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im runing a gv-1, goes to 1650 at 1/4 stick, after that im just adj the pitch"always feel thankful..... never entitled"

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09-20-2009 11:28 PM 11 years ago

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smallplanes

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Do you have your gov on in normal mode? I have set to off as i'm still breaking in the motor and trying to tune it. It's very hard to tune it by yourself.

Thanks
Spectra G 26cc
Jewel
Bat 27cc
Trex 700<br

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09-21-2009 12:12 AM 11 years ago

0Post 6

Mike545

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gettysburg, pa

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I run gov mode all the time, activated by throttle , 1650 idle up 1750, i dont do 3d , more than i need."always feel thankful..... never entitled"

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09-21-2009 01:14 AM 11 years ago

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GREYEAGLE

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I'll Bite

Find a post here in the archives called Malories mechanical exponential throttle setup. Practice it, set your throttle linkage / per spec to it 1st - nuff said.

Do not use a straight line throttle curve like a nitro.

Gassers develope peak HP at or about 60% to 70% carb butterfly opening .

On your pitch gauge, find 7 degrees positive pitch " hover +" and match it to your 70% throttle opening - that will take care of your low head speed - high pitch -.

If your dropping out of hover your maybe over heating the motor and dropping RPM just before it

.
Carefull it may consume your clutch , maybe your RX batteries are weak telling the TX to failsafe if you have the radio dialed up for it.

From reading your early posts this year - you spoke of building this motor from parts of a few other's. Is it a 230 ? a 231 ? or a 26 ? What style aircleaner does it have and what exhaust box ??

Some of the consumer air cleaners have numerous, baffels, screen's and filter paper elements, some just foam. Couple of the exhaust boxes have spark arrestor screen's. You may have a air flow problem.

Their's a individual on this site who has a simple soft ware program with a uncanny ability to plot throttle curve's, pitch curves, and RPM and overlay them all on the same plot. Helped me a bunch trying to find a certain feel or sweet spot on my collectives on both of my gassers because I like a high head speed. By looking at the plots I was able to adjust the parameters of each until their no longer touchy and bit like silk.

If possible post your radio settings of the carb and pitch curves, maybe we can get him to run you a plot.

greyeagle

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09-21-2009 01:39 AM 11 years ago

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Mike545

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what type of radio do you have? maybe we could copy your program?"always feel thankful..... never entitled"

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09-21-2009 02:04 AM 11 years ago

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smallplanes

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This motor was a G26 EI and i took parts from a g26 and changed it from a ei to a flywheel motor. I put the flywheel the coil and the source coil from the g26. The reason i did it was everyone on here said the EI motor would vibrate alot worse than a flywheel motor so i changed it out. It cranks and runs good i still have the 645 airplane version carb on it.

Here is my thr curve from a 12zh.
1-0
2-8.5
3-13.5
4-20.5
5-28.8
6-39.8
7-56
8-79
9-100
Thats my normal thr curve

Heres my pit curve
1--100
2--75
3-50
4--25
5-+0
6-+25
7-+50
8-+75
9-+100

I don't know if this helps if you need any more let me know?
I can adjust gas airplane motors but helis are a whole nother world.
Let me know if you know what i'm doing wrong?
I have the needles about 1 3/4 turns out.
I'm using the cheap can muffler that came with the motor.
I have my oil mixed 5oz to the gal of coleman camp fuel,the oil is Lawnboy ashless oil. I' m going to Amsoil 100:1 saber oil after break in and i'm going to mix it 50:1.
I do not have my gov on in normal.

Let me know what you think?

Thanks
Spectra G 26cc
Jewel
Bat 27cc
Trex 700<br

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09-21-2009 02:38 AM 11 years ago

0Post 10

Mike545

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gettysburg, pa

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im a 14mz we can exchange programs, I run lawn boy 32:1, yea I know but it runds fine and the spark plug is med brown."always feel thankful..... never entitled"

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09-21-2009 02:49 AM 11 years ago

0Post 11

GREYEAGLE

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Show us

Your actual physical pitches as measured on each of your 10 point listings . The numbers listed mean absolutely nothing because they do not reference the pitch in physical degrees.

From Negative to Positive along each of the 10 point markers.

Open your throttle to aprox 3/4 wide and then tell us wear it falls along your 10 point listed throttle numbers and what the pitch is at that point.

Place your pitch guage on - zero or 90 out all linkages - tell us what your pitch is.

Pull off the cover to your air cleaner and look. Foam ? Paper and screen element ???greyeagle

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09-21-2009 03:37 AM 11 years ago

0Post 12

Toadster25

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Iowa

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This probably isn't a very good way to get head speed but before I had a gv1 I would find a video of a spectra and listen to the sound so I could hear how it should sound. If you aren't tone deaf then you could get pretty close to the right engine speed.

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09-21-2009 03:50 AM 11 years ago

0Post 13

GREYEAGLE

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I don't run a govenor either

But I think about them

. I go by " That sounds scary huh " or I'll pump the collective to full pitch and if it' sounds like a double hand grip holder on the sides of a public handicap stall

It's about right.

I think once Raptor Man caught me in a dead hands off hover at 1850 " Just shakes his head " I did tone it down just a wee bit { I Lie }

He flew around the bean patch one nite being real conservative with it and he's hooked - glad I got it back with out any wet spots.greyeagle

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09-21-2009 09:59 AM 11 years ago

0Post 14

shawmcky

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Isle of Wight,United Kingdom

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A governor can be a help with a gasser

To get your initial head speed to engine r.p.m matched as a reference.Say 1650 headspeed to for instance 12,000 r.p.m. then if you have an on/off switch you can match your throttle curve to pitch.Having a new engine turning too slowly with too much pitch will overheat the motor in pretty short order and that will certainly kill the engine and clutch pretty quickly.As has been said 7 degrees of pitch at 70% stick on a governor set at 1650 headspeed at approx 12,000 r.p.m with your carb needles at stock settings for your motor should be close.Work out the headspeed/r.p.m combo from your gear ratio.Running in with a governor may or not be a good idea but at least you can get your engine,headspeed in the ball park to stop it frying using it sensibly at first.Team- unbiased opinion.K.I.S.S principle upheld here

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09-21-2009 03:04 PM 11 years ago

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Chris Bergen

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but i had it to drop out of a hover to the dirt two or three times. It just lost all power and went to an idle

Failsafe?Chris D. Bergen

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09-21-2009 05:30 PM 11 years ago

0Post 16

smallplanes

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You think it went into failsafe? I wonder why i have my 2.4 ant apart from each other look at it in my gallery and see if it looks good. I does make since because it never cut off it would rev right back up again and one time i pushed alot of pitch and it still fail fast acked like it had no lift. I tried to land in the beans to break the fail but i could get to them. Now i'm really confused.

Thanks for all the reply

Spectra G 26cc
Jewel
Bat 27cc
Trex 700<br

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09-21-2009 06:05 PM 11 years ago

0Post 17

Billme

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This is the very reason I would rather see novice run a gov when setting up 3D...

You are running a throttle curve set up for 5 deg half stick. You have 0 pitch at half stick from what I can tell

Its a wonder you didn't shake all the bolts out, even though it may have looked smooth...I hope your RX is ok...

Novice should setup like a FAI machine if their not going to use a gov for a while. That way they want confuse the timing of the throttle to pitch, otherwise they must understand they must delay the throttle to wherever the hover pitch is...

3D is 0 pitch half stick

FAI is 4 ro 5 degs half stick...Its much easier for a novice to control throttle with the load without a gov..

If you want to keep your 3D setup for idle up, then go to normal, and raise the lowend pitch till you get -6 degs, then straighten the line linear back to high pitch..You will notice your half stick point line above 50%...You may have to raise this a little to get it to hover at half stick at the rpm you plan to run...

In idle up, you need to match it from the normal screen at half to high, and mirror that, on the lowend of halfstick in idle up..
You will end up with a not so linear line, but the LOADS will remain the same on the engine, or just run a gov with linear lines, but do run the gov...
Its almost impossible to run a linear line with a gasser without a gov, specially for a novice..
Bill

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09-22-2009 03:04 AM 11 years ago

0Post 18

bcm

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Tuolumne,CA

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I'll be honest and tell you that I havent read every post, so I hope I'm not just repeating some elses comment, but i wanted to throw this out there. I had a very similar experience earlier this year. The throttle was very irratic for a flight right before the servo quit at almost full throttle. They are pretty succeptable to vibration on these machines.
Maybe try replacing the servo.

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09-22-2009 03:57 AM 11 years ago

0Post 19

oldfart

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Vancouver, Canada

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Failsafe is not only triggered by interference. It will also trigger if your RX sees too low a voltage for a fraction of a second. Quite clear in most radio instructions. Did they not mention that in your radios instructions?

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09-22-2009 02:12 PM 11 years ago

0Post 20

smallplanes

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I have a Jewel genrator on it and it was 5.2 when i checked with a 1amp load with a futaba BR2000 volt meter. That was after i landed and checked it before i put it up. I don't know?

Thanks for the info
Spectra G 26cc
Jewel
Bat 27cc
Trex 700<br

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RunRyder	RunRyder

Home › ✈️Aircraft › 🚁Helicopter › Gasser Model RC Helicopters › Other › Just got new clutch Installed in Spec.

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