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Home✈️Aircraft🚁HelicopterThunder TigerOther › Clutch opened like a can opener!
10-26-2006 03:08 PM  12 years ago
jrvander

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Camp Foster, Okinawa japan

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Nice work!
Pete,

Nice work that! I was thinking about placing some modeling clay under the bell and installing it to measure the clearance but your method is much better (unless you only have one bell!) I've re-installed the motor and aligned it using the above mentioned method; it works very well. There's a considerable amount of play between the motor and the aluminum mount that can be optimized due to the large 3.5mm bolt holes in the engine mounting tabs. It was a bit tricky with the GV-1 sensor bracket but eventually I got good alignment. Hopefully this clutch bell will last a bit longer. Also, Ace hobby is currently reviewing the pics and deciding if they will warrenty the bell or not. I figured it was worth a shot. I might get a new bell out of the deal, might get nothing!
- Jon
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10-26-2006 03:18 PM  12 years ago
NORTHERNLIGHTS

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Riverview FL

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just to add....when you are spinning the start shaft for alignment THIS IS what I do. Rotate the CRANKshaft about every 10 degrees and then check the startshaft for bind. I have found that leaving the crank in one place doesn`t necessarily guarantee alignment throughout the 360 degreees of rotation. ME( my experience)B.O.A.T. Break Out Another Thousand!
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10-26-2006 06:49 PM  12 years ago
w.pasman

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Netherlands

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Nice picture! thanks
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10-27-2006 03:20 AM  12 years ago
NitroPolymer

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Southeast Florida

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There is an error in the Raptor manual. The washer on the start shaft is not depicted. There is a part number listed, and a line pointing to the E-Clip, but there is no picture of it in the exploded diagram. I have found that it works well both ways, but to be consistant with the manual, the washer should go there!
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10-27-2006 12:02 PM  12 years ago
w.pasman

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Netherlands

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The washer on the start shaft is not depicted.
Huh, it's clearly there.
Rap 50V2 manual, page 6, line from "(18) BK0584" to the picture where a washer (looks like a black ring) is shown around the starter shaft.
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11-04-2006 02:12 AM  12 years ago
onebigjunker

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Wellsville, Ks

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but if you look in the back of the manual on page 39 it only call for 2 thrust washers and they go in the blade grips, ref. assembley step 11, and those are the only 2 supplied with the kit of a raptor, although illistrated, it is not supplied for the start shaft!work hard, play even harder!!!!
Team Empire Hobby/GAUI USA
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01-24-2007 07:55 PM  12 years ago
Zaneman007

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Texas - USA

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The washer I'm talking about is the shim stock that goes between the fan and the clutch. It's thin, probably only .015". It has a large dia., about an inch, and has two parallel flat sides. This will raise the clutch higher into the bell, however I checked it before installing and it appeared to have plenty of clearance without bottoming out in the bell.
In my experience, the above referenced washer is a problem. I had mine on my raptor for a good 2 months in the summer. But on the first cold day, the clutch locked up. I'm talking one day everything is fine and then the next day, bam. The clutch is locked up. I removed it and everything was happy again.

Check to see if the clutch is rubbing on the bell housing. You may see some scoring on the top of the housing. If so I would remove the shim. The clearances are tight.
Old Guys Rule!
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01-25-2007 12:23 AM  12 years ago
Dr.Don

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Cedar Park, TX -- USA

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I have had this happen too, but it was the result of a crash. Crash tossed the battery so there was no control of anything, and the throttle servo went wide open. By the time I got to her and pulled off a fuel line she had burned through the clutch bell. Hyper 50 bearings were toast, piston slammed into the head, etc. Required complete engine rebuild.Dr.Don
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