Poly Urethane or Stiff Rubber Motor Mounts

[racerone3]

Beth's max II is the only machine in our fleet that has any rubber between the engine and frame. in all of the machines that i've done engine swaps (or rebuilt the mount in the case of the hustler) i've eliminated the rubber. not to say that there is no difference, but if there is a difference i sure can't feel it. in her max, when i rev the engine i can see it twist slightly in the frame as the clutches ramp up... it looks to me like the clutches get pulled out of alignment slightly when it does this. not saying either way is better, just some things to think about

[hydromike]

Since we don't have the engineering qualities of the original Max units to compare to, a direct comparison is impossible for now (unless we uncover their vendor! {insert evil laugh}). I think that most of the units encompassed by this link are natural rubber, but their properties may vary. Have you considered going with solid mounts? Just as a baseline to see if you completely detest the ride quality?

Vibration Isolators

One of the higher shear strengths on this unit. Doesn't mean it won't flex, but it means it *should* hold up....

beefy

~m

[Mike]

I thought about just taking a piece or round plastic stock and throwing it on the lathe, but I was worried that it would be too stiff and I would end up with a lot of vibration that I could feel in the seat. It may not really matter though.

[George]

I've heard of guys using hockey pucks to lift trucks and such. Perhaps you could make something using those.

[Mike]

Have any of you ever used a polyurethane motor mount for your ATV? I am getting a lot of flex from the mounts in Jennifer's mid-engine Max IV and since I do not know the shear properties of the stock rubber vibration isolators that I am currently using from Recreatives Industries, I was hoping switching to a poly isolator would be an easy way to stiffen things up. I haven't had any luck finding a poly mount that is the same size though, or at least something close to the same size as our stock mounts?

The other option would be to find the stiffest rubber mount I could. Got any suggestions or even better, links?

This place had a ton of cylindrical vibration mounts: Square Cylindrical Vibration Mounts Rubber Neoprene Urethane Sorbothane Silicone Gel Ring Mounts Stud Nut Type but I really don't have any base properties of the stock max mount to compare them to.