Blew the clutch in the 1890

[islandedge]

All of the rivets holding the clutch to the yoke ripped right out! My local clutch guy said this replacement he had was better since it had springs to take the abuse and avoid the rivets from shearing off. I put it back together and tryed a 20" pine i had at the yard, everthing worked/chipped fine. What do you guys have to say? Its a "auto clutch" mounted to a bandit 1890

 

[islandedge]

 

[islandedge]

 

[islandedge]

Here's the new one

 

[96coal449]

If I remember correctly in high HP applications they use discs like these with the springs. @tc262 is a clutch guy at twin disc. He may have better advice.

 

[tc262]

I mostly deal with transmissions and marine gears at work and don't work with much on the pto side of things. That being said I'm surprised to see an automotive style clutch on a chipper that size. @96coal449 None of our high hp stuff (that I know of) uses springs on the disc. That might be true with auto applications but not common with ptos.

 

[Merle Nelson]

???? Springs are a retrofit addition right?

If they don't use springs on the disc what do they use? Thanks for your informed insight.

 

[islandedge]

On the original clutch that came out the hub was rivited to the clutch plate.

 

[tc262]

In that application the springs are there to reduce the force on the hub if engaged to quickly.

 

[Merle Nelson]

Yes, thanks. (I did read that.)

Rivits as originally installed on that clutch seem to be able to experiece total failure. So (if) they are always rivits in high hp applications then, is there a higher grade of rivits a person could get and make sure your clutch doesn't desintegrate?

 

[Merle Nelson]

Oops, I posted at same time you did tc.

 

[tc262]

Here's what the majority of the clutches in Twin Disc Ptos on hand fed chippers will look like. The pics are of a double disc 11" clutch and one of the clutch plates. This would be commonly found on something like a 15 to 18" chipper. The same thing but with a single disc is commonly found on 12" chippers.