rrTV-PHOTO   New HD TV
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 711 ONLINE 19 EVENTS SEARCH REGISTER  START HERE
 
1 page545 viewsPOST REPLY
E-flite . Next D . Fast Lad Performance

.
.
Century Hawk - Falcon - Raven - Predator > Falcon 46 SE VII Problem 1
 
 
Boomstrike
Heliman
Location: Brownstown, Michigan

Finally received The new falcon. Built the head and like the design alot. Much smoother than my Ergo 60 Sport. First problem as expected is a quality control issue. The 55 Tooth Counter Gear has a pretty good warp in it. Ordered the kit from Ron Lund and he has another he will send me if it too is not warped. Is there a way to straighten a plastic gear or should I spend the time having Century send me ten of them and pick out the best one?

\
Steve
06-20-2002 Over year old.
 
 
Boomstrike
Heliman
Location: Brownstown, Michigan

Waste Time?

I don't consider making sure that a helicopter is vibration free a waste of anyones time. If you are not already aware, a warped gear does not need anything riding on top of it to cause vibration. I like to build my helicopters free of foaming fuel, radio glitches, premature servo failures, etc. How bout you?


Boom
06-20-2002 Over year old.
 
 
Boomstrike
Heliman
Location: Brownstown, Michigan

Smoothness

The smoothness is in reference to the rotor head.


Boom
06-20-2002 Over year old.
 
 
ncostes
Veteran
Location: US

I'm just curious - how would you get century to send you 10 so you could pick the best one out?
06-20-2002 Over year old.
 
 
Optech
Key Veteran
Location: Vista/Oceanside, CA.

GOOD LUCK!

I've been complaining about this problem for some time. I keep sending the things back to Century and I think they repackage it and send it back. I have YET to get a straight one. I used to have an original first edition Falcon .46 and it was super smooth. One day while going through it I checked the counter gear. It had absolutely ZERO runout. I had no qualms when I bought my newer SE thinking it too would be super sweet. I've had nothing but quality control problems and an incessant fuel foaming problem since. I later found out from others with the same problem that fuel foaming is a trade mark of Century helis. Their molds are going to s--t and they are doing nothing about it.

I will never buy another Century product.

Mike

Viva La Airtronics!
06-20-2002 Over year old.
 
 
Darkstar
Senior Heliman
Location: USA

I big source of hi-freq vibration is the clutch and fan parts. I had to glue the two pieces together then balance as a unit.

Tim.
06-20-2002 Over year old.
 
 
the Wasp
rrProfessor
Location: Vt

Call them on it !!!

I don't get it !, My Hawk SE V2 is great, not one problem !!,,, the gears are flat and straight, no vibrations, no foaming and flys great !!
If you have a problem with parts quality, what you need to do is call Century, talk to someone with authority and ream his/her ears, and tell them to get on the ball and check the parts before they are shipped, and say something like "that you would like to keep on recommending Century helis to beginners but you can't if you keep having quality problems",,,

For 7 weeks Ace said "we will send out you heli tomorrow", so one day a called them and said "I want to keep telling people to buy Raptors but I can't because I don't have a Raptor" 6 days later I had my Raptor.
Don't think I was being rude !!

Jim
06-20-2002 Over year old.
 
 
Boomstrike
Heliman
Location: Brownstown, Michigan

Did That

Sent Century an e-mail today and explaind that I was building their Falcon and ran across the warped gear. They stated I must report the defective part to the store I bought it from, and let them(Rick's) call Century with the complaint. Meanwhile Rick's is charging me $6.95 on my credit card and sending out the replacement. He will refund the amount when he receives the defective part from me. Will let you know how well Century does when they deal with Rick.

Boom
06-21-2002 Over year old.
 
 
Rotomotion
Heliman
Location: Charleston, SC

gears

I've run the same counter gear for a while on my #1 (30 gallons). It has a warp - about 1mm per rotation - dunno what you are seeing. It runs great and does not cause any measurable vibration.

I've been through a few main gears and I can't recall one that ran completely true. Again, this has not caused any virbration problems (or any other problem for that matter).

I just don't worry about the gears - rather I love how smooth the two-stage transmission is. The Falcon flies great and it lets me enjoy massive air time with low-pucker factor. This heli has done a LOT for advancing my flying skills (crashed it many times -now I can build it in my sleep).

Dennis
06-21-2002 Over year old.
HOMEPAGE  
 
 
Lift
Elite Veteran
Location: Houston, TX

Counter Gear

Guys I noticed the same thing on mine. I am putting my new kit together currently. But, I didn't catch it until I had it installed and assembled in the frames.

Question: Is the gear itself not true is the the milled out trough where the cross pin sits not bored evenly? In otherwords has anyone checked the gear on a flat surface?

I would think that this poses a vibration problem.

Also, did anyone have to Dremel out the motor mount slightly to accept the OS .50 SX-H?

I can tell that this thing is gonna be a REAL performer. The only thing that I don't like is the way the engine is BURIED in there.
06-21-2002 Over year old.
 
 
Donald D.
Heliman
Location: Stevens Point Wisconsin

I agree with heli72, don't get too concerned about the gears. Mine isn't perfect either, but it doesn't bother a thing. Lift, yes you have to dremel or file the motor mount slightly to get the OS 50 to fit. Mine took just a little bit of grinding to get that engine in the mount
Don
06-21-2002 Over year old.
 
 
Donald D.
Heliman
Location: Stevens Point Wisconsin

One thing I forgot to mention, I put my fan and then my clutch assembly in the high point balancer when I built my Falcon, I heard about the fuel foaming issue. They were both out of balance, so I balanced them. My Falcon does not or has never had a fuel foaming problem. My old Excell used to have a one piece start shaft, and if it wasn't dial indicated right, it too would foam the fuel, as well as tear the radio equipment up. It is very important that you balance the high speed parts, or you will have problems.
Don
06-21-2002 Over year old.
 
 
the Wasp
rrProfessor
Location: Vt

me too

Well I took a look at Hawk SE V2 again, the main gear is flat but my counter gear is not, I would say it's warped about a millimeter, that's more than to much, but there's no vibration or shaking,,, actually I was quit imprest on how steady it is in a hover,,, but now Don has me thinking about my clutch, LOL !!

Jim
06-22-2002 Over year old.
 
 
Syclic
Senior Heliman
Location: Northern Hemisphere

Primary gear

Wasp et al.

Alexander is correct, you do not have to worry about any vertical wobble in your gear. This gear engages the pinion gear off of the clutch in the vertical plane so it will not contribute in any meaningfull way to vibes. What would cause a problem would be a 1mm "out of round condition" as mentioned by him. This deformity would cause stresses in the horizontal plane, 90 degrees to the forces of engagement. This would push and release pressure on the pinion as it rotated and could cause some low to mid frequency vibes

This is what Alexander was refering to. We experienced such problems in many of the X-Cell maingears. The solution was to just adjust it all a little looser until it wore in a little better, then readjusted them.

In this case, because it is all in the same plane, this is unnecessary.

Albert
06-22-2002 Over year old.
 
 
oldfart
Elite Veteran
Location: Vancouver, Canada

primary gear and clutch system balancing

Thank you Alexander and Syclic....you saved these slow fingers a lot of typing.

As for clutch, clutch bell and fan ballancing;

For absolute minimal vibes one can balance and align ALL of these items on ALL helis (I have seen imbalances here on even expensive 60's) but in this power system design they are not as critical as in one with seperate bell/clutch systems.

These three items are designed to be all on one shaft (all in the same plane and rotating on the same axis) to minimise this issue. As they are all in close to the rotating axis, the fulcrum is relatively short. Consequently the imbalance will not have as great an effect as if it was longer.

Tis is why most high frequency vibes I have come accross, (solving fuel foaming issues) at various Fun Flys etc. have been related to operating with to lean a setting in the midrange or to a slightly bent tail rotor output shaft. This is true when dealing with any heli that has a start system that does not turn with the engine. On such systems, a misalignment of just over 2/1000 of the rotating start shaft will bring on fuel foaming, ditto for misalignment of a clutch to clutch bell on systems that have the clutch/fan on the engine and the bell seperately mounted in bearing seats in the upper frame.

Phil
06-22-2002 Over year old.
 
 
1 page545 viewsPOST REPLY
Ace Hobby . Esprit Model . Thunder Power RC

.
.
Century Hawk - Falcon - Raven - Predator > Falcon 46 SE VII Problem 1
 PRINT TOPIC Advertisers 

Subscribe to This Topic

Thursday, November 20 - 6:45 pm - Copyright © 2000 - 2008 runryder.com | email | link to rr | runryder needs cookie