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HelicopterThunder TigerOther › Slipping Clutch on Raptor 90 SE.
12-04-2005 12:19 AM  12 years agoPost 1
Leipzig

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Claremore, OK

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I recently purchased a Raptor 90 SE. I've flown approximately a gallon and a half through it. A couple of flights ago the clutch started slipping in middle of the flight. Has anyone experience this issue with this particular machine? It has been a bit cooler here recently. I thought the cooler temperatures would cause this at the begining of the flight rather than the middle. I pulled the motor and inspected the clutch and clutch liner. The liner seemed a bit glazed so I roughed it up with some 120 grit emery cloth. I flew it afterwards and it still seemed to be slipping every once in a while. Any and all input is appreciated!!

Regards,

Michael

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12-04-2005 12:47 AM  12 years agoPost 2
scottc

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shakopee minnesota..USA

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take a look at the one way bearing on the main shaft as well, had a freind go thru this and it turned out to be the one way bearing on the main shaft.

Hey I didn't ask for this fetish.!!!But I'am sure paying for it....

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12-04-2005 12:50 AM  12 years agoPost 3
Al Magaloff

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e-mail Team- Raptor, to see what they can do for you.

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12-04-2005 12:55 AM  12 years agoPost 4
Wa11banger

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Huntsville, Al

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It sounds like your clutch liner is worn or the clutch to the clutch bell gap is too large.. First check your clutch make sure it is not damaged in any way.. Also ensure the clutch feet can move freely and are not bound on the center hub of the fan. If all of that holds good, then you need to replace your clutch liner.. Ensure the clutch is still proper and not "sprung" take black electrical tape and stick it in one of the slots then carefully wrap it all the way around the clutch taking care not to stretch it then end with the tape back into the same slot on the clutch.

Remove the current clutch liner from the bell and clean the bell thoroughly, Checkfit new clutch material into the bell ensuring there is a smooth straight line and no gaps where it meets. Stick the start shaft through the clutch bell and stick the clutch in the bell it should be a snuf fit since the tape is on there.. If it is not this is your que that its going to take a little extra effort to install the liner. It can be spaced out a myriad of ways I usually just use more JB weld on the edges since the spacing is so nominal.

Mix up either JB weld or epoxy ( I prefer JB Weld its less runny) and coat the inside of the clutch bell just a dab will do ya unless you have a poor fit as stated above and then apply more liberally. Slowly work the clutch back onto the start shaft and into the clutch bell.. Leave until cured. Pop it out clean up any mess inside on top of the bell and reinstall in model... Someone here on RR recommended the electrical tape as the proper amount of clearance and I have found the same.

Reassemble and go fly

Just my .02
Rick

Proud member of the Quick UK, Duralite Flight Systems, V-Blade, & KBDD team

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12-04-2005 12:56 AM  12 years agoPost 5
Wa11banger

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Huntsville, Al

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HAHA Al... That WAS a funny... All Raptor owners should start with Jeff F. as we all know his answer to every Raptor part failure.

Rick

Proud member of the Quick UK, Duralite Flight Systems, V-Blade, & KBDD team

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12-04-2005 01:03 AM  12 years agoPost 6
Al Magaloff

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I've re-lined clutches for friends that had R90's that wouldn't come off the ground on the first flight! You got a gallon and a half, be thankful.

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12-04-2005 01:04 AM  12 years agoPost 7
Leipzig

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Claremore, OK

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May I have the link to Team Raptors Website?

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12-04-2005 01:06 AM  12 years agoPost 8
Al Magaloff

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You can't get there from here! Then come back here for the REAL help. The TeamRaptor referrence was a joke, sir.

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12-04-2005 01:15 AM  12 years agoPost 9
Leipzig

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Claremore, OK

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Didn't realize that was a joke, sorry about that!

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12-04-2005 01:17 AM  12 years agoPost 10
Wa11banger

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Huntsville, Al

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you can get there with this url

http://www.team - raptor.net remove the spaces around the dash

Rick

Proud member of the Quick UK, Duralite Flight Systems, V-Blade, & KBDD team

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12-04-2005 01:18 AM  12 years agoPost 11
Al Magaloff

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That's ok! You need to install a new clutch liner, QUK hd clutch, and have the correct clearance between the two. The clutch will last for many years, provided you don't crash it out. I'm not a fan of some of the methods that some people use. IMO, a new liner installed, with material thicker than required, then turned true in a good lathe, with a clearance of approximately .009-.010 inches per side, is the best way.

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12-04-2005 01:23 AM  12 years agoPost 12
Al Magaloff

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you can get there with this url
If you go there, do bring a pillow.

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12-04-2005 01:29 AM  12 years agoPost 13
Wa11banger

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Huntsville, Al

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I agree with Al 100% if you have a lathe lol... I do not and havent found any far enough out yet to require alot of glue but I have heard of some.. I also agree on the QUK HD clutch you wont regret it as it will never fail and break... I have already broke two of TT's but they dont have a problem there...

Al's way is the best if you have access to a lathe and gutnsharp tips for it I know the material from Robbe is thicker than TT's and I am sure there are other but I don't know for sure

Rick

Proud member of the Quick UK, Duralite Flight Systems, V-Blade, & KBDD team

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12-04-2005 01:35 AM  12 years agoPost 14
Leipzig

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Claremore, OK

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Thank you Rick and Al Magaloff for your help, I truely appreciate it.

Regards,

Michael

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12-04-2005 03:02 AM  12 years agoPost 15
scottc

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shakopee minnesota..USA

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DUDES
at least give my idea a thought or looking at, this guy at the field went thru hell to come down to the one way bearing.

Hey I didn't ask for this fetish.!!!But I'am sure paying for it....

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12-04-2005 03:07 AM  12 years agoPost 16
Wa11banger

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Huntsville, Al

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Scott, if the autohub is slipping I agree you could mimic the same problem but can be tested non intrusively by feeling the clutch.. If the slips happen in flight land immediately and put a finger on the clutch.. If it is hot the clutch is slipping.. If the autobearing is slipping you can feel the outside casing of it. Sorry bud, wasnt throwing you to the way side just have never had an autohub slip its always been that they lock up.. But I agree it is possible.

Rick

Proud member of the Quick UK, Duralite Flight Systems, V-Blade, & KBDD team

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12-04-2005 03:12 AM  12 years agoPost 17
scottc

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shakopee minnesota..USA

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no i know you or any one else was , but this guys bearing had a crach in it , and at low rpms it was fine till he would do a full climb out and every thing said points to the bearing or the clutch, to me a clutch dose not just start to slip it wears out over time,

Hey I didn't ask for this fetish.!!!But I'am sure paying for it....

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12-04-2005 03:14 AM  12 years agoPost 18
Al Magaloff

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I agree with you Rick. Also, if the auto bearing slips under power, it's only gonna do it once.

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12-04-2005 03:16 AM  12 years agoPost 19
Al Magaloff

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A Raptor 60/90 clutch is already worn out, before you ever fly it, so any more wear and it slips. ThunderTiger really dropped the ball on this one.

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12-04-2005 03:19 AM  12 years agoPost 20
Salty

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St. Augustine

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ThunderTiger really dropped the ball on this one
and the auto rot assembly etc etc....

Ask your Doctor if getting off your ass is right for you.

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HelicopterThunder TigerOther › Slipping Clutch on Raptor 90 SE.
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