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Mikado Modellhubschrauber . Futaba-RC . Boca Bearings

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Century Hawk - 50NX - Raven - Predator > 3 flights and already buying a part.
 
 
rowdog_14
Heliman
Location: antioch, tn

My Posts This: Topic  Forum		This is my second hawk and I love them to death but I have three flights on my second one all which were hovering, maybe 12 min total flight time. I smelt something burning on the third flight and landed. As soon as I landed it quit. I tried turning the blades and they would not turn. I took everything apart and found plastic shaving all over the carb. The liner had moved up on the clutch and started eating away at the fan. All is good, just wanted to let everyone know. I want to get the metal clutch and fan but my pocket could not afford that yet so I just purchased two fans and two clutches today. I will try and put pictures up later.

Again I love the hawk pros.
05-18-2009 07:29 PM
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Mutt
Key Veteran
Location: M ca usa

My Posts This: Topic  Forum		Your doing something wrong. Only time I ever heard of issues like that is due to clutch being on to loose or engine not aligned right etc. Check over everything when you get it back toghter. make sure you have proper clearance.
05-18-2009 07:55 PM
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FBoss
Key Veteran
Location: Aurora Indiana USA

My Posts This: Topic  Forum		+1 to mutt and save your $$ the metal clutch bell is straight bling. no real need for that upgrade. That prop nut needs to be very tight

The good ole times are now ,Hawk, Raven, Raven NX, Logo 10
05-18-2009 08:57 PM
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oldfart
Elite Veteran
Location: Vancouver, Canada

My Posts This: Topic  Forum		That can also occur if the clutch liner broke loose. I always check that it is securely glued in the few times I have needed to install a new bell.

If they are securely attached they will not come loose and work up into the fan.

If it was a new bell, check with them and they may replace it and the fan at N/C.
05-18-2009 11:35 PM
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Dilbeck
Key Veteran
Location: Springdale Arkansas

My Posts This: Topic  Forum		[quote]The liner had moved up on the clutch and started eating away at the fan. That's a little strange for the liner to move up and eat away at anything. Sounds like maybe the bolt on top of the fan came loose and the fan moved up and started to eat away at the fan shroud and caused the blades not to turn. I'm probably wrong but as described doesn't make sense to me for some reason. Update your findings so as to clarify the situation.

If it doesn't fly sell it!
05-18-2009 11:57 PM
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rowdog_14
Heliman
Location: antioch, tn

My Posts This: Topic  Forum		Old fart hit the nail on the head the liner started easing up and started eating away at the fan. Nothing I did wrong or century. I think the glue just came loose. I am at work and will post pictures tonight. My first hawk did not do this even after about 5 gallons through it.
05-19-2009 12:48 AM
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oldfart
Elite Veteran
Location: Vancouver, Canada

My Posts This: Topic  Forum

I guess after 23 or 24 years of beating the air into submission with an R/C heli, and having spent the last 14 years or so logging a lot of flight time on all the different helis Century has produced, one has a chance to have seen or experienced most things involving these machines.

Now if only I could learn to fly like some of them younger fellas.
05-20-2009 12:51 AM
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rowdog_14
Heliman
Location: antioch, tn

My Posts This: Topic  Forum		it took me a long time but here is a picture of the liner and the fan.
05-22-2009 08:30 PM
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FBoss
Key Veteran
Location: Aurora Indiana USA

My Posts This: Topic  Forum		I had not seen that one before. Century or customer installed liner?

The good ole times are now ,Hawk, Raven, Raven NX, Logo 10
05-22-2009 09:00 PM
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oldfart
Elite Veteran
Location: Vancouver, Canada

My Posts This: Topic  Forum		Where and when did you get that clutch bell in your second Hawk?

Was one of the starts with it, a "hot start"?
05-22-2009 09:10 PM
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rowdog_14
Heliman
Location: antioch, tn

My Posts This: Topic  Forum		That is the one from the kit. I do not know what you mean hot start.
Is that when the engine is hot and then you restart it.
05-22-2009 10:41 PM
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kraffty
Senior Heliman
Location: princess anne md.usa

My Posts This: Topic  Forum		It is when you are holding the rotor head while starting the engine with the throttle way up by mistake and the clutch burning up until you can throttle back.
05-23-2009 12:26 AM
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rowdog_14
Heliman
Location: antioch, tn

My Posts This: Topic  Forum		OH, ok. No, I have never have done that. Thanks for the example.
05-23-2009 01:05 AM
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Furious Predator
rrProfessor
Location: Kitchener, Ontario, Canada

My Posts This: Topic  Forum		a hot start is when you start the motor and it goes to full throttle right away, while your holding onto the blades. your throttle stick may be up, wrong flight mode, wrong model, reversed throttle, forgetting to turn the Receiver on...and so on.

its normally a guaranteed wrecked clutch liner.

it happens to all of us.

Shawn
Team Leisure-Tech
Team HelixRC
05-23-2009 01:07 AM
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oldfart
Elite Veteran
Location: Vancouver, Canada

My Posts This: Topic  Forum
Quote 
......and when did you get that clutch bell in your second Hawk?

When did you get the second kit and where from?
05-23-2009 02:40 AM
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Century Heli
rrAdvertiser
Location: CA. USA

My Posts This: Topic  Forum		We were referred to this thread by our Canadian distributor. Sorry to see the mishap you had with the clutch bell and fan. Please give us a call at 1-800-686-8588 or email support@centuryheli.com on Tuesday to get a replacement under warranty. Please have the support staff refer to this thread if you run into any problems.

Century Management
05-23-2009 07:10 AM
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Mutt
Key Veteran
Location: M ca usa

My Posts This: Topic  Forum		problem solved. Cant beat century for support and service.
05-23-2009 01:29 PM
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rowdog_14
Heliman
Location: antioch, tn

My Posts This: Topic  Forum		I have already received my new parts, I ordered two from towerhobbies. Yeah, century has great service.
05-23-2009 05:21 PM
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rowdog_14
Heliman
Location: antioch, tn

My Posts This: Topic  Forum		This is crazy after putting in my new clutch,three hovers later my main gear started having play in it where the bearing goes in the middle. I purchased two new ones from towerhobbies and now it is hovering great again. I guess my hovering is putting a lot of stress on the machine. lol
06-14-2009 06:11 PM
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MotorRotor
Heliman
Location: Eastern Canada

My Posts This: Topic  Forum
Quote 
....my main gear started having play in it where the bearing goes in the middle.

I have been flying these helis for years, as have a number of others at our field, and have been monitoring this forum for as long, and I have never heard of this happening.

Many years ago, I had a friend (he was a well extablished heli flyer who even wrote articles for a magazine) have a problem where the maingear had to much vertical play, so it would disengage the crown from tail drive pinion. After looking over his heli, I found that he did not assemble the hardened sleeve part of the assembly properly (we still tease him about it to this day ). He had not fully inserted the big C-Clip that goes at the bottom of the hardened center piece, into the groove that is there. This locates the lower part of the the maingear to the mainshaft. Consequently it would always slip down.

I would guess the one at the top is equally important to keep it from slipping up

There is a clear picture of it on page 15 of the Hawk Pro manual.
06-15-2009 03:51 AM
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Century Hawk - 50NX - Raven - Predator > 3 flights and already buying a part.
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