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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › R50 Starter Shaft Question
08-04-2007 08:46 PM  13 years ago
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DSW

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Oviedo, Florida 32765

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R50 Starter Shaft Question
I noticed that the starter shaft on my R50SE moves up and down about 2.7mm with engine speed. Should there be a spacer to keep it up of down?
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08-04-2007 09:09 PM  13 years ago
SkateFreak

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Cambs UK

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nope,
There is a G clip on the other end to stop it comming out the top, this play is here because when you install the starter coupling the shaft must have been laying low at the time...
To get rid of this play all you need to do is take off the starter shaft and that replace it a little lower down therefore holding the starting shaft up...

let us know how it goes

Best regards

-Jvr
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08-04-2007 09:16 PM  13 years ago
Maxists The Baddist

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North America

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That's exactly what I would do to fix that.
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08-04-2007 10:16 PM  13 years ago
BarracudaHockey

rrMaster

Jacksonville FL

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Works best if you drop the engine, push up on the start shaft and down on the coupling and tighten it up.Andy
AMA 77227
http://www.jaxrc.com
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08-04-2007 11:19 PM  13 years ago
Barney

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Inverness Scotland

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To save dropping the motor..

Take the coupling off and remove any burrs the grub screws left on the shaft etc so it drops on/off with no resistance.

It's easiest if you remove the pitch cradle first to access the grub screws directly.

lift the shaft fully up and then with a pin or similiar add a tiny drop of CA glue between the shaft and the inner race of the bearing and hold till it goes off (use Kicker if necessary). Carefully replace the coupling and tighten..

If your really lazy you can drill a hole in the side of the cradle to access the grub screws for another day...BUT this will only be of use to you when the coupling is correctly positioned to start with. Can be handy if you need remove/tighten the coupling for maintenance
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08-05-2007 02:18 AM  13 years ago
DSW

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Oviedo, Florida 32765

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I thought I pushed it up during my reasseblby. I think I'll give Barney's suggestion a try.

Thanks!
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08-05-2007 02:47 AM  13 years ago
helinutz2

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Medicine Hat, AB Canada

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Cuda's method takes all of 5 minutes to accomplish. Rave 90 ENV / Radikal E640 / Rush 750 / Trex 600N
Team No WhinerS, Team Renegade R/C Heliflyers
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08-05-2007 03:14 AM  13 years ago
DSW

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Oviedo, Florida 32765

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helinutz2

How can you remove the muffler, carbon brace, engine, do the repair, and reasseble in five minutes???
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08-05-2007 01:28 PM  13 years ago
BarracudaHockey

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Jacksonville FL

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Remove the skids.

Remove the carbon frame brace is stick it in a parts bin.

Remove the pushrod at one end.

Remove 4 bolts and drop the engine. At worst you have one screw holding a Hatori to the frame or something, otherwise you dont need to mess with the muffler.

Fix the start shaft.

Install the engine, pushrod and skids.

After that its just a matter of removing the 4 engine bolts and the pushrod and out comes the engine.
Andy
AMA 77227
http://www.jaxrc.com
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08-05-2007 01:51 PM  13 years ago
Chook

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Esperance Western Australia

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Here is a great tip to get to the grub screws to remove them.

http://www.raptortechnique.com/manu...0-50_page08.htm
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08-05-2007 03:17 PM  13 years ago
NitroPolymer

rrVeteran

Southeast Florida

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'Cudda,' I agree with you completely, that carbon brace serves no real purpose other than get in the way when you are working on the machine. I have sold at least 20 of them on RR! (It's carbon fiber, it MUST make the heli fly better.)
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08-05-2007 04:38 PM  13 years ago
Maxists The Baddist

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North America

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This is probably a given but no one mentioned it - use locktite on everything.
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08-05-2007 04:50 PM  13 years ago
NitroPolymer

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Southeast Florida

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Locktite is especially important on the starter shaft installation, but not in the usual place. Consider putting lucktite between the upper part of the pinion and the inner race of the start shaft bearing. this prevents the "wallowing" that many have experienced.
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08-05-2007 06:15 PM  13 years ago
helinutz2

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Medicine Hat, AB Canada

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Sorry DSW, I don't have the carbon brace. "Clarification" 5 min to disassemble and 5 min to reassemble. Rave 90 ENV / Radikal E640 / Rush 750 / Trex 600N
Team No WhinerS, Team Renegade R/C Heliflyers
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08-05-2007 07:13 PM  13 years ago
DSW

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Oviedo, Florida 32765

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The flat portion on the starter shaft for the set screws does not seem to be down far enough on the shaft. With the hex adapter in proper position, tightening the set screws on the hex adapter, the adapter slides up on the shaft. Seems like the flat areas on the starter shaft may need to be increased to acomidate the set screws.
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08-05-2007 07:59 PM  13 years ago
BarracudaHockey

rrMaster

Jacksonville FL

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I dobut that. Do you have the C clip and the washer on the bottom of the start shaft?Andy
AMA 77227
http://www.jaxrc.com
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