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HelicopterMain Discussion › clutch replacement
03-10-2017 07:24 PM  8 months agoPost 1
wc_wickedclown (RIP)

rrProfessor

long beach calif

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ordered new clutch bell with linear installed should I order new clutch as well ? or just fix the old one

I imagine the clutch is sprung and is stuck aginst the clutch bell.

Watch at YouTube

Insha Allah made in america

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03-10-2017 07:30 PM  8 months agoPost 2
Richardmid1

rrProfessor

Leeds, England

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With no head/blades to hold it WILL spin the tail. A bit of drag is normal. Hold the main gear so you can feel how much drag there is.

60% of the time, it works every time!

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03-10-2017 07:59 PM  8 months agoPost 3
heli4fun

rrNovice

TRUMP, USA

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Clutch

I had a similar problem years ago,took out the motor and found that my clutch not the bell had broke which caused the tail to spin when you attempt to start it.
When the clutch broke,it compressed itself to the clutch bell.
Hence the tail moving while starting...

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03-10-2017 10:09 PM  8 months agoPost 4
Jeff polisena

rrElite Veteran

westpalmbeachflorida​usa

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Replace shoe , if grabbing its the problem not the liner .
Make sure gap is correct or it will fail quickly

I stole it ,flew it and gave it back ;)

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03-10-2017 10:23 PM  8 months agoPost 5
JuanRodriguez

rrProfessor

The Villages,​Florida

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Agree with replacing the shoe ..... and buying a bell with a preinstalled liner will most likely guarantee that the gap is not going to be correct ......
WC will most likely be going through this exercise again soon .....

Been there, done that and old enough to know better.....

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03-10-2017 10:38 PM  8 months agoPost 6
AirWolfRC

rrProfessor

42½ N, 83½ W

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Make sure the bell ID is round and concentric with no runout.
check the clutch is spaced no more than .01 in (.005 preferable) from the bell liner material. Sometimes I have to bend the shoes in or out to achieve that. Dropping the clutch on the floor can bend things out of tolerance - - - just bend them back.

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03-10-2017 10:39 PM  8 months agoPost 7
Four Stroker

rrElite Veteran

Atlanta

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Stock clearance is 0.025~0.030". A guaranteed failure.

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03-10-2017 11:09 PM  8 months agoPost 8
Jeff polisena

rrElite Veteran

westpalmbeachflorida​usa

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Ive seen fan not on correct and clutch pushed up into bell causing same issue . In the video it looks like shoe is toast or shoe pressed up into bell .

I stole it ,flew it and gave it back ;)

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03-10-2017 11:46 PM  8 months agoPost 9
AirWolfRC

rrProfessor

42½ N, 83½ W

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The video looks like a broken clutch.
Remove & replace.

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03-11-2017 04:10 PM  8 months agoPost 10
wc_wickedclown (RIP)

rrProfessor

long beach calif

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ordered new clutch and clutch bell thanks guys

Insha Allah made in america

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03-11-2017 08:37 PM  8 months agoPost 11
EEngineer

rrProfessor

TX

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Might as well do it right while you're at it...

"turn it on....rev it up....let it out...gto"

Logo 600SXs, 800XX, TDR IIs

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03-11-2017 09:34 PM  8 months agoPost 12
Four Stroker

rrElite Veteran

Atlanta

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Well set the clearance to 0.008" each side and replace at 0.012". May have to put some paper or such behind the liner.

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03-12-2017 01:25 AM  8 months agoPost 13
AirWolfRC

rrProfessor

42½ N, 83½ W

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I don't use paper liner. I bend the clutch shoes out to suit using a dial test indicator to verify. (very little bending needed)

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04-14-2017 06:53 PM  7 months agoPost 14
wc_wickedclown (RIP)

rrProfessor

long beach calif

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was going to replace the clutch but the old one looks fine,

something on the starter shaft could be frozen I suspect?

Watch at YouTube

Insha Allah made in america

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04-14-2017 07:41 PM  7 months agoPost 15
Felino

rrApprentice

Mexico city

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Be careful with the clutch shoe.
The video shows a posible crakced clutch.
Even at first sight the clucth shoe may looks ok. But if you remove it and spread it a bit by hand you may find it is actually cracked. It will always crack at the round area. (eyelet)
A cracked clutch will work ok while flying but starting will be a nightmare every time.
Also a worn bell liner will make the clutch shoe spread more than needed and eventually it will cause a crack even if it is a new clutch shoe.

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04-15-2017 09:43 AM  7 months agoPost 16
wc_wickedclown (RIP)

rrProfessor

long beach calif

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does the pinion gear suppose to spin as if it has a one way its locked tight around the shaft

Insha Allah made in america

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04-30-2017 08:44 PM  6 months agoPost 17
wc_wickedclown (RIP)

rrProfessor

long beach calif

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THHINK I FOUND THE PROLBLEM

Watch at YouTube

Insha Allah made in america

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HelicopterMain Discussion › clutch replacement
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