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jamin_00 · 03-30-2012, 01:29 PM

I have greased the one way bearing plenty but it's so tight on the shaft that to turn it I have to hold the shaft with a tool through one of the holes and grip the pully, surely it is not meant to be this hard?

Should I take a little emery paper to the shaft or is it an issue with the owb?

snemi00 · 03-30-2012, 01:35 PM

More than likely an issue with the brass bushings on either end of the pulley rather than the one way bearing itself. Check or signs of brass marks on the shaft as a telltale sign. Try just chamfering the edges of the brass with an Xacto knife and see if it works.

IrishT · 03-30-2012, 03:15 PM

Quote:

Originally Posted by jamin_00

I have greased the one way bearing plenty but it's so tight on the shaft that to turn it I have to hold the shaft with a tool through one of the holes and grip the pully, surely it is not meant to be this hard?

Should I take a little emery paper to the shaft or is it an issue with the owb?

I had this happen, and I resolved it by removing the one way, cleaning all the grit off the secondary shaft and inside the one way, and reinstalling.

The one way is small and I think it gets stuff inside it easily.

justindewoody · 03-30-2012, 03:30 PM

It's also possible that the one way was installed backwards. Or you have the Z60 upside down. I know it's a longshot, but just check to be sure.

jamin_00 · 03-30-2012, 05:31 PM

Will check in the morning, cheers for the suggestions

Long Nguyen · 03-31-2012, 12:01 AM

I would say the brass inserts causing the problem. They could be misaligned.

jamin_00 · 03-31-2012, 04:21 AM

What's the easiest way to get them out without doing damage?

In the oven then pull out gently with something?

Mercuriell · 03-31-2012, 04:50 AM

Quote:

Originally Posted by jamin_00

What's the easiest way to get them out without doing damage?

In the oven then pull out gently with something?

Oven for 15 mins at 130°C will shift most things out of alloy casings - then you're left with the dilemna on how to get them in straight and axial

jamin_00 · 03-31-2012, 04:57 AM

Quote:

Originally Posted by Mercuriell

Oven for 15 mins at 130°C will shift most things out of alloy casings - then you're left with the dilemna on how to get them in straight and axial

Yes lol.

In the oven now

justindewoody · 03-31-2012, 08:49 AM

You could just use a heat gun like I did. Comes right out.

DominicD · 03-31-2012, 12:57 PM

Don't use grease OWB, load it up with triflow instead.

justindewoody · 03-31-2012, 01:24 PM

Actually, you should use Tri-Flow Clear Synthetic Grease...like this...

jamin_00 · 03-31-2012, 02:18 PM

Nice, I have a clear synthetic grease like that for bearings on bike wheels

DominicD · 03-31-2012, 02:25 PM

Quote:

Originally Posted by justindewoody

Actually, you should use Tri-Flow Clear Synthetic Grease...like this...

I wouldn't use that either, that still is still pretty thick, won't allow the teeth to engage and disengage properly.

gww528 · 03-31-2012, 02:39 PM

One way bearings are made to be greased, plus it will last longer than oil.

OnTheSnap · 03-31-2012, 02:51 PM

Quote:

Originally Posted by justindewoody

Actually, you should use Tri-Flow Clear Synthetic Grease...like this...

+1. I use it on all my models. As do some pro pilots in my area. I tend to break a lot of OWB's, and the fatality rate has decreased for me using this stuff. I applied it to my Goblin and it's working great 30 flights in.

DominicD · 03-31-2012, 02:51 PM

Quote:

Originally Posted by gww528

One way bearings are made to be greased, plus it will last longer than oil.

Welcome to do whatever you want, I have seen time and time again OWBs fail because the owners used grease. I have been using triflow since I started the hobby, never had to replace a OWB or a sleeve.

OnTheSnap · 03-31-2012, 03:16 PM

Interesting. Dave Dahl swears by ATF for the OWB. https://www.helifreak.com/showthread.php?t=387736

ghost400 · 03-31-2012, 03:32 PM

I only once used grease on my 700E and had a OWB failure. Removed the grease and used thin OWB lubricant and there were no more problems.

03-30-2012, 01:29 PM	#1 (permalink)
jamin_00 Registered Users My HF Map location Join Date: Aug 2008	Pulley Z60 issue on the shaft. I have greased the one way bearing plenty but it's so tight on the shaft that to turn it I have to hold the shaft with a tool through one of the holes and grip the pully, surely it is not meant to be this hard? Should I take a little emery paper to the shaft or is it an issue with the owb? __________________ The difference between knowing your st and knowing you're st! Optipower - Kontronik Drives

03-30-2012, 01:35 PM	#2 (permalink)
snemi00 Registered Users Join Date: Jan 2010	More than likely an issue with the brass bushings on either end of the pulley rather than the one way bearing itself. Check or signs of brass marks on the shaft as a telltale sign. Try just chamfering the edges of the brass with an Xacto knife and see if it works. __________________ SAB Heli Division Rotorquest

03-30-2012, 03:30 PM	#4 (permalink)
justindewoody Registered Users Join Date: Jan 2012	It's also possible that the one way was installed backwards. Or you have the Z60 upside down. I know it's a longshot, but just check to be sure. __________________ Goblin 700C \| Goblin 500 Sport \| Trex 700L Dominator \| Trex 450L Dominator \| Trex 250DFC \| DJI F450 \| Armattan Chameleon FPV

03-30-2012, 05:31 PM	#5 (permalink)
jamin_00 Registered Users Thread Starter My HF Map location Join Date: Aug 2008	Will check in the morning, cheers for the suggestions __________________ The difference between knowing your st and knowing you're st! Optipower - Kontronik Drives

03-31-2012, 12:01 AM	#6 (permalink)
Long Nguyen Registered Users My HF Map location Join Date: Dec 2007	I would say the brass inserts causing the problem. They could be misaligned. __________________ Long Nguyen

03-31-2012, 04:21 AM	#7 (permalink)
jamin_00 Registered Users Thread Starter My HF Map location Join Date: Aug 2008	What's the easiest way to get them out without doing damage? In the oven then pull out gently with something? __________________ The difference between knowing your st and knowing you're st! Optipower - Kontronik Drives

03-31-2012, 08:49 AM	#10 (permalink)
justindewoody Registered Users Join Date: Jan 2012	You could just use a heat gun like I did. Comes right out. __________________ Goblin 700C \| Goblin 500 Sport \| Trex 700L Dominator \| Trex 450L Dominator \| Trex 250DFC \| DJI F450 \| Armattan Chameleon FPV

03-31-2012, 12:57 PM	#11 (permalink)
DominicD The Capi My HF Map location Join Date: Oct 2006	Don't use grease OWB, load it up with triflow instead. __________________ Spreading capibara awareness since 2006

03-31-2012, 01:24 PM	#12 (permalink)
justindewoody Registered Users Join Date: Jan 2012	Tri-Flow Actually, you should use Tri-Flow Clear Synthetic Grease...like this... Attached Thumbnails __________________ Goblin 700C \| Goblin 500 Sport \| Trex 700L Dominator \| Trex 450L Dominator \| Trex 250DFC \| DJI F450 \| Armattan Chameleon FPV

03-31-2012, 02:18 PM	#13 (permalink)
jamin_00 Registered Users Thread Starter My HF Map location Join Date: Aug 2008	Nice, I have a clear synthetic grease like that for bearings on bike wheels __________________ The difference between knowing your st and knowing you're st! Optipower - Kontronik Drives

03-31-2012, 02:39 PM	#15 (permalink)
gww528 Registered Users Join Date: Dec 2007	One way bearings are made to be greased, plus it will last longer than oil.

03-31-2012, 03:16 PM	#18 (permalink)
OnTheSnap Registered Users Join Date: Jan 2009 Location: NorCal	Interesting. Dave Dahl swears by ATF for the OWB. https://www.helifreak.com/showthread.php?t=387736 __________________ Xpert Scorpion Power Systems Helidirect

03-31-2012, 03:32 PM	#19 (permalink)
ghost400 Registered Users Join Date: Mar 2009	I only once used grease on my 700E and had a OWB failure. Removed the grease and used thin OWB lubricant and there were no more problems. __________________ Greetz Marco Align T-REX 700 E BeastX, Pyro 700-52L, Power Jive 120 HV T-REX 600 ESP Jive 80LV, BLS451, GY520, BLS 254

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