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HelicopterHIROBOOther › Piston ring mounting procedure
08-06-2007 09:55 PM  10 years agoPost 1
pschurter

rrApprentice

La Serena - Chile

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I accidentally broke the piston ring of my OS .50 Hyper, when putting it back together after a bearing change. I am surprised of how brittle that thing was!
A replacement ring should be arriving soon, and I don't want to screw up again. Is there any correct procedure to mount the ring in its groove? I mean besides carefully opening it and putting it there...

Good flight, good night!

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08-06-2007 10:05 PM  10 years agoPost 2
BarracudaHockey

rrMaster

Jacksonville FL

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I lay it on top of the piston and put one end in the groove then work it around the top of the piston.

Before you try to put it in the sleeve, make sure the ends of the ring overlap the anti rotation pin thats in the ring groove.

Andy
AMA 77227
http://www.jaxrc.com

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08-06-2007 10:19 PM  10 years agoPost 3
z11355

rrMaster

New England

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do NOT try to spread the ring at all.

as noted, put one end in the groove (find the alignment pin) and
run your thumb over the edge. A lot like putting a chain on a
bike or tire on a rim.

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08-07-2007 03:36 AM  10 years agoPost 4
pschurter

rrApprentice

La Serena - Chile

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Thanks! That sounds like the right way to do it. I bought 2 rings just in case...

Good flight, good night!

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08-07-2007 09:40 AM  10 years agoPost 5
Paul Woodcock

rrElite Veteran

Dubai - United Arab​Emirates

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Hi

Before you try put the ring on.....check it fits. What i am trying to say is, there is sometimes a carbon build up in the groove in the piston and the ring will not fit. Try slot the ring in on all sides of the piston before you install it.

Don't ask how i know.

Paul

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08-07-2007 02:30 PM  10 years agoPost 6
pschurter

rrApprentice

La Serena - Chile

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Thanks Paul. Will do.

Good flight, good night!

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HelicopterHIROBOOther › Piston ring mounting procedure
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