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HelicopterCentury Radikal G20-30 N640 Hawk Predator › Why sport gears strip?
05-01-2004 01:40 PM  13 years agoPost 1
RCHELIFANATIC

rrApprentice

TEXAS

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Hey,
I have had about 7 gallons through the hawk sport. I have had the gears strip when using stupid plastic mount that comes with TJ, that ended the gears when motor mount loosened.

I put a 39 TT pro instead of the 32 in it. The gears stripped immediatley, 2 min flight, everything was tight, so I replaced and did it again about a 2 min flight.

Question: Is the 39 TT pro too much for the hawk, or was my hawk wore out, or what? I have heard of a few people having problems with these gears stripping. Is there a fix for it.. I would like to hear from a REP. like lift. or someone.


Thanks

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05-01-2004 03:41 PM  13 years agoPost 2
Al Austria

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Gainesville, FL

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Which gear is stripping? Is it the main(top teeth or bottom teeth of the gear), counter, or pinion. Assuming it's the counter gear, make sure the mesh between the pinion gear and the counter gear is not too tight nor too loose. Check for bad bearings, damaged gear teeth, loose screws, etc. I highly doubt the TT39 is too much for it because people run OS50's on basically the same gear. It's very uncommon to strip any of the gears in any of Century's 30/50 machines. Hope this helps....

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05-01-2004 07:38 PM  13 years agoPost 3
RCHELIFANATIC

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TEXAS

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It is the clutch and the gear it runs. Brand new nothing loose, so going by what you said that means I must have wore out my bearings, I suppose you can't sell a heli for 160.oo without cheap bearings. I guess you can't tell anything is cheap about bearings until they let you down.

Thanks for helping me narrow down the problem, this helps me feel confident about my decision to buy a raptor.

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05-01-2004 08:02 PM  13 years agoPost 4
Al Austria

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Gainesville, FL

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I never said there was anything wrong with the bearings.
Thanks for helping me narrow down the problem, this helps me feel confident about my decision to buy a raptor.
You've already made your negative attitude toward Century apparent, why must you keep pushing it? When you get your Raptor make sure you get a life too.

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05-01-2004 09:05 PM  13 years agoPost 5
RCHELIFANATIC

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TEXAS

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I am sorry you didn't appreciate me thanking you for your advice...

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05-01-2004 09:09 PM  13 years agoPost 6
alwallash

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Morgan Hill, CA (near San Jose)

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.

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05-01-2004 09:42 PM  13 years agoPost 7
Al Austria

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Gainesville, FL

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Me appreciate your thanks?, please. I believe the only reason you started this thread is to continue ranting about your problems with Century's product. For starters look at your profile. Under Interests you have "Telling people what comes from the darkside. " Most of your posts regarding Century are not positive. I am honestly sorry that your experience with the machine and or company was less that pleasant but "trolling" doesn't benefit anyone.

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05-02-2004 04:07 AM  13 years agoPost 8
poiuyt

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Idaho

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RCHELIFANATIC, I thought you got rid of your Hawk and swore up and down never to buy a Century product again?

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05-02-2004 06:57 AM  13 years agoPost 9
flipped2left

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indianapolis,in.

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I love my hawk!! actually i love all 3 of them!! 4 and 5 are still in the box.
ken

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05-02-2004 10:26 AM  13 years agoPost 10
FENMAN

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CAMBS UK

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stripped gears

Hi All
this is woodymcnab on my friends comp.
with regards to stripped gears, I have stripped the gears on my main gear, all the teeth were almost nonexistant when i did a heavy tail landing with my century airwolf.
this has hawk mechanics.
this was the only damage however i thought it was extreme since this was the only damage done to the heli.
the heli itself is less than a year old and ive only had about 4 or 5 gallons through her, the engine is a ivine 39.
the cost for the main gear was about aprox $15.00.
im a bit unhappy about the fact that people have started to be rather rude to people (Al Austria) who are asking for help or advise. Everybody has there own opinion.
Paul

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05-02-2004 01:37 PM  13 years agoPost 11
jimmyhua

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Guam

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Hi RCHELIFANATIC,

Lift has moved.

Lift has moved himself and now hangs out at rotorworks dot net.

All the guys here have offered good suggestions on what to look for.

1. check pinion gear mesh
2. check that pinion gear has full contact with counter-gear. adjust engine height as necessary.
3. split the frames and make sure counter gear and shaft are not worn out or the frames holding the bearings are worn out.

If you still find the gear mesh between the pinion gear and the counter gear to be too loose, by all means, sand down the motor mount (or shim it, whichever makes it tighter).

Hey Fenman, that was unfortunate, the maingear is supposed to give out first before that one does.

Jimmy

“No, try not! Do or do not, there is no try.”

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05-02-2004 10:15 PM  13 years agoPost 12
Gearhead

rrMaster

Vt

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RCHELIFANATIC,,, you could have a bad bearing that can give you slop, check the bearing at the top of your counter shaft, I had 2 bearings go bad at that point, or if you had a lot of flex in your lower frame your gear mesh could have opened up, or your motor mount could have been drilled wrong,,, it's hard to say without seeing it,,,

no, the 39 size motor is NOT to powerful,,, the Falcon 50 uses the same 2 gears, and in 2 years I have not had any gears strip, and I have a hopped-up OS 50 running on 30%, and some other guys are running OS 61 in their Falcons without stripping gears...

Jim

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05-03-2004 05:47 PM  13 years agoPost 13
RCHELIFANATIC

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TEXAS

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jimmyhua and the wasp

Thanks didn't think about just moving the motor over, I bet the bearings are bad but I have had a few hard landings so I bet the frames had a lot of flex in them I bet a new hawk with the 39 should be fine, I am still undecided in which one to buy but now I have decided to include the hawk in my choices.

Lift needs to come back, why make your own forum, lets not segregate.
I might check out the other forums though.

Al Austria,
GET BENT

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05-03-2004 09:12 PM  13 years agoPost 14
Al Austria

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Gainesville, FL

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RCHELIFANATIC,

I apologize if I exploded but it sounded like you were trying to start some trouble.
GET BENT
Stand
I Don't

RR member for nearly two years and I'm finally a "Heliman".

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05-03-2004 09:16 PM  13 years agoPost 15
RCHELIFANATIC

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TEXAS

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No biggie, I can understand how you got the idea. To get the record strait, I hate century customer service. I do enjoy their products the majority of the time.

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05-03-2004 10:45 PM  13 years agoPost 16
dnts

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Israel

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Hey RCHELIFANATIC,
If you are looking for a mean 39 machine - go for the Raven 30. It sells for $247 at Rick's (stock clearance). It will hold together better with a 39 on it. One thing to remember, if you had a hawk sport is to fix the issue with the tail pitch slider. Do not overlook this issue!!! Save for that, the machine is top grade for a 30 at that price. Just need to get a torque tube upgrade so that my gyro will be friends with me again..
Nir

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05-04-2004 02:31 PM  13 years agoPost 17
RCHELIFANATIC

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TEXAS

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Too late, I bought the Hawk again, I had too, I have all the parts and upgrades at the house. I could not buy a caliber after hearing what all the guys said in the kyosho forum said, and the raptor is a nice 3d ship but this is a 30 so it is back up and for fun. I will be happy to have it as a back up heli one day when I get a serious 3d ship, or the pred gasser. I want the gasser so bad.

Thanks for all the help.

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05-04-2004 02:39 PM  13 years agoPost 18
dnts

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Israel

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RCHELIFANATIC,
The Raven is an upgraded Hawk with CCPM control scheme. The crash kit and most updates will fit the Raven (which is why I got mine). It is my backup ship for the Predator Max.
Just one thing to consider as an upgrade is moving to 6mm spindle with thrust bearings for the grips. This will let you sleep better at night knowing that something is holding your blades back from taking off on their own.
Nir

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05-05-2004 07:22 AM  13 years agoPost 19
FENMAN

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CAMBS UK

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dnts
could you go into more detail about the tail slider issue?
this is one i have not heard about
thanks

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05-05-2004 05:36 PM  13 years agoPost 20
oldfart

rrProfessor

Vancouver, Canada

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gears

RCHELIFANATIC,

7 gallons through the Hawk means about 140 flights (a fair number). I would bet that the primary gear shaft bearings are "talking to you". They are worn or damaged to the point that they lock up in flight, thus stripping gears.

Time to change them out.

Phil

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HelicopterCentury Radikal G20-30 N640 Hawk Predator › Why sport gears strip?
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