MK rubber mount for OS91 too soft for YS110?
12-06-2008 | 07:59 AM
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From: Malaysia, MALAYSIA
MK rubber mount for OS91 too soft for YS110?
Hi all
I was wondering if this MK mount is too soft for YS110?
My excelleron antivibe isolator part broke (its silicone) and I replaced it with the MK. Since the YS110 is a 90 size crankcase width, I have to use this MK mount.
http://shop.singahobby.com/?q=node/12657
I started the engine this afternoon and its vibrate a lot more than my stock anti vibe mount and the vibration reduced as the rpm is up but its vibrate a lot more than I expected.....compared to my original Excelleron stock mount.
I'm considering hard mount it.....
I was wondering if this MK mount is too soft for YS110?
My excelleron antivibe isolator part broke (its silicone) and I replaced it with the MK. Since the YS110 is a 90 size crankcase width, I have to use this MK mount.
http://shop.singahobby.com/?q=node/12657
I started the engine this afternoon and its vibrate a lot more than my stock anti vibe mount and the vibration reduced as the rpm is up but its vibrate a lot more than I expected.....compared to my original Excelleron stock mount.
I'm considering hard mount it.....
12-06-2008 | 08:28 AM
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From: Forest,
MS
RE: MK rubber mount for OS91 too soft for YS110?
I tried a YS 110 in my Conquest VI equipped with a Dave Brown mount which is the same as the MK, and it shook the mount to pieces and damaged the belly pan shaking so much. In my experience, it just won't work. I'm considering going electric on this plane so I can get to fly it, because there's no other style of soft mount to put in the plane, and I'm worried that the YS will beat the airframe itself up if I hard mount it. The short version, nope, it won't work.
Roy Aultman
Forest MS
Roy Aultman
Forest MS
12-06-2008 | 09:49 AM
#3
RE: MK rubber mount for OS91 too soft for YS110?
I have a Zen 90 with this style mount. Flew it till the piston ring wore out.
Then put a YS 90 in its place which was lighter , and help move the CG to its correct position.
The mount has never failed. I balance my props and spinner to reduce vibration.
The pictures were taken in 2003. The plane is still flying with the ys 90
Spares
http://www.airborne-models.com/html/...asp?AGroupID=7
Also use this mount on my Icepoint 2 meter pattern plane. Still no failures. YS 140
Then put a YS 90 in its place which was lighter , and help move the CG to its correct position.
The mount has never failed. I balance my props and spinner to reduce vibration.
The pictures were taken in 2003. The plane is still flying with the ys 90
Spares
http://www.airborne-models.com/html/...asp?AGroupID=7
Also use this mount on my Icepoint 2 meter pattern plane. Still no failures. YS 140
12-07-2008 | 11:52 AM
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From: Ramat Gan, ISRAEL
RE: MK rubber mount for OS91 too soft for YS110?
Hi,
I also have a ZEN 90, pulled by a YS110S (new model). I did not have the original WM soft mount so I thought I would use the MK YS110 mount and purchased one, new!
It took 6 flights for the 110S to break the rubber thingies (one rubber mount broke, another one was severely cracked nearing failure).
I needed to get back to practicing QUICKLY so I simply hard mounted the engine and flew almost 80 flights with setup, no problems at all.
There is some vibration, however a "proper' solution would be to use a HYDE mount + nose ring - not easy to implement on a KIT/ARF utilizing the original Fiberglass cowling (although T. Newman did do just that, and successfully - see Focus Sport build thread).
Good Luck,
Danny
I also have a ZEN 90, pulled by a YS110S (new model). I did not have the original WM soft mount so I thought I would use the MK YS110 mount and purchased one, new!
It took 6 flights for the 110S to break the rubber thingies (one rubber mount broke, another one was severely cracked nearing failure).
I needed to get back to practicing QUICKLY so I simply hard mounted the engine and flew almost 80 flights with setup, no problems at all.
There is some vibration, however a "proper' solution would be to use a HYDE mount + nose ring - not easy to implement on a KIT/ARF utilizing the original Fiberglass cowling (although T. Newman did do just that, and successfully - see Focus Sport build thread).
Good Luck,
Danny
