rubber damper under motor?

[yamanube]

I have seen a couple yamaha motors out of couches that have a big square rubber damper or shock absorber mounted under the engine. I am in the process of putting a pipe and head on a buddies '08 SJ and shure enough when I pulled the motor it had one too.
What is the purpose of this (I would assume to take some strain of the motor mounts from jumping)? Anybody else running one?

 

[Mouthfulloflake]

ive pulled them off of blaster motors.

never seen one on a superjet.

Interesting idea, if it fits.

 

[yamanube]

Sits nicely under the motor in the '08, not sure if the motor is mounted higher than previous years but I doubt it. Ive got one sitting around here from a wetjet, thats why I ask. Maybe I will toss it in, and start a new fad - rubber damper from couch saves motor mounts :scratchchin: Also makes for less area for random tools and items to escape your grasp. :smile:

 

[aqua]

08's do have them. i think it might be an addition since the hull is a little bit wider through that area than past years.

 

[kurtwolff]

I've been told that they are there to keep the motor from slamming the hull if a motor mount breaks, I don't know how close to the hull they sit though - not sure if they hit the hull when the mounts flex downward. The ones from WRIII's are deep, they could be trimmed to fit in a normal SJ? Could save mounts!

 

[yamanube]

I've been told that they are there to keep the motor from slamming the hull if a motor mount breaks, I don't know how close to the hull they sit though - not sure if they hit the hull when the mounts flex downward. The ones from WRIII's are deep, they could be trimmed to fit in a normal SJ? Could save mounts!

The dampner is maybe 2-3 inches tall and sits right on the bottom of the hull with the motor installed. (on the 2008)

Could save mounts!

Mounts, couplers....sh*t fire up the bandwagon. Ill drive.

 

[oxnard111]

very interesting, never head of this before.

 

[wydopen]

very interesting, never head of this before.

i had it on one of mine

 

[brett]

i just took one off a a blaster motor

 

[Mouthfulloflake]

I could see it punching thru the hull on a landing hard enough to break an engine mount.

haha

 

[#ZERO]

I guess if you're running the soft stock mounts it might be a good idea to install one.

I have a few off the 760 engines and they require different case bolts with larger diameter heads.