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JiriK · 07-23-2010, 02:22 PM

I flew two flight with my fbl- protos today. Before third flight I noticed that the one-way bearing on that 14t pinion had jammed solid.

So I came home and took it apart. Here´s what I found.
One-way bearing had broken in pieces and cut grooves on the adapter.

Any ideas on what went wrong? Bad setting / bad bearing / bad luck?

Setup is 6S Lipo (Turnigy 40-50C 2200)
Hyperion HS3026-0880 motor and Jazz 80 esc.
So it has some punch..

terrabit · 07-23-2010, 06:47 PM

It's probably just not pictured but your top bearing isn't there.

Mentalic · 07-23-2010, 07:21 PM

Pinions.... Heres a vote for a 2x stronger small pinion one way system. I'd like to run one but I'm not touching this setup.
Tach'd mine today, wow it was at 2900rpm ID1, ID2 just over 3000! Guess the crazy hot weather has the lipo's cranking out the power. Its very snappy.

JiriK · 07-23-2010, 07:45 PM

Quote:

Originally Posted by terrabit

It's probably just not pictured but your top bearing isn't there.

I took both support bearings out of the pinion when I was investigating what was wrong.
Both bearings look ok. One seems to spin just fine, other one not so well.

Lplate · 07-23-2010, 11:32 PM

Do you think the 3rd bearing support in the stretch conversion kit will help?
I sure hope Corrado releases the 3rd bearing support with drill bit+jig for non-stretch flyers.

Mentalic · 07-24-2010, 03:00 PM

Quote:

Originally Posted by Lplate

Do you think the 3rd bearing support in the stretch conversion kit will help?
I sure hope Corrado releases the 3rd bearing support with drill bit+jig for non-stretch flyers.

I don't think it will help with the type of wear pictured. A much harder shaft would help and a larger/additional one way to help spread the load would help.

JiriK · 07-28-2010, 01:43 PM

I´m back at 15t pinion..
But what is that duck quack -like sound during high power climbs, tictocs etc?
Belt too loose and slipping or is this one-way bearing slipping?

Don´t remember hearing that sound so much with 14t pinion, but then the belt was tighter too..

terrabit · 07-28-2010, 01:50 PM

I suppose it could be either but I'd guess it's your belt slipping.

Mentalic · 07-28-2010, 06:06 PM

Quote:

Originally Posted by JiriK

I´m back at 15t pinion..
But what is that duck quack -like sound during high power climbs, tictocs etc?
Belt too loose and slipping or is this one-way bearing slipping?

Don´t remember hearing that sound so much with 14t pinion, but then the belt was tighter too..

Sounds like a belt slip to me. More often the pinion lets go completely, its hard to miss that.

whisperdancer · 07-29-2010, 03:11 AM

Quote:

Originally Posted by Lplate

Do you think the 3rd bearing support in the stretch conversion kit will help?
I sure hope Corrado releases the 3rd bearing support with drill bit+jig for non-stretch flyers.

The 3rd bearing support is only for 12T, 13T and 14T.
The bearing is to small for a 15T adapter, unless MSH comes out with an adapter that has a small diameter on the top.

07-23-2010, 02:22 PM	#1 (permalink)
JiriK Registered Users Join Date: Aug 2006	One-way gone bad I flew two flight with my fbl- protos today. Before third flight I noticed that the one-way bearing on that 14t pinion had jammed solid. So I came home and took it apart. Here´s what I found. One-way bearing had broken in pieces and cut grooves on the adapter. Any ideas on what went wrong? Bad setting / bad bearing / bad luck? Setup is 6S Lipo (Turnigy 40-50C 2200) Hyperion HS3026-0880 motor and Jazz 80 esc. So it has some punch.. Attached Thumbnails Last edited by JiriK; 07-23-2010 at 02:29 PM.. Reason: more info

07-23-2010, 06:47 PM	#2 (permalink)
terrabit Registered Users Join Date: May 2007	It's probably just not pictured but your top bearing isn't there. __________________ vbar T700E v2 DFC head, Pyro 700-45L, Jive 120HV, BLS451/BLS251, Edge 693/115 vbar CF Protos Scorp 3026-880kv, Ice lite 75, 9650/BLS251, SAB 430/KBDD 82

07-28-2010, 01:50 PM	#8 (permalink)
terrabit Registered Users Join Date: May 2007	I suppose it could be either but I'd guess it's your belt slipping. __________________ vbar T700E v2 DFC head, Pyro 700-45L, Jive 120HV, BLS451/BLS251, Edge 693/115 vbar CF Protos Scorp 3026-880kv, Ice lite 75, 9650/BLS251, SAB 430/KBDD 82

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07-23-2010, 07:21 PM	#3 (permalink)
Mentalic Registered Users My HF Map location Join Date: Apr 2008	Pinions.... Heres a vote for a 2x stronger small pinion one way system. I'd like to run one but I'm not touching this setup. Tach'd mine today, wow it was at 2900rpm ID1, ID2 just over 3000! Guess the crazy hot weather has the lipo's cranking out the power. Its very snappy.

07-23-2010, 11:32 PM	#5 (permalink)
Lplate Registered Users Join Date: May 2008	Do you think the 3rd bearing support in the stretch conversion kit will help? I sure hope Corrado releases the 3rd bearing support with drill bit+jig for non-stretch flyers.

07-28-2010, 01:43 PM	#7 (permalink)
JiriK Registered Users Thread Starter Join Date: Aug 2006	I´m back at 15t pinion.. But what is that duck quack -like sound during high power climbs, tictocs etc? Belt too loose and slipping or is this one-way bearing slipping? Don´t remember hearing that sound so much with 14t pinion, but then the belt was tighter too..

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