Thinking about tunes - one tune? flasher? jukebox?

[DMCTurbo]

no way - these clutches r tough,,, so far - that looks like the weight broke and stabbed the roller out - a broken apart weight did that id guess - lucky! mine went through belly. never found the roller... never weld on weights to add weight --- Kevin - AK - what kind of weights r those?

Looks like thunder products but I could be wrong.

 

[KnappAttack]

Ya, that’s a heavy hitter arm that broke there. That’s not the clutch’s fault.

 

[journeyman]

Yes, did notice it’s a HH wt. arm. I used to run those on my 700 Yamaha.

Pretty nasty explosion, that could kill someone. Like I said, the guy never gave any details, just photos.

Studying the photo though I don't see anything broke on the arm itself, but I do see some sort of debris on the end of the Allen bolt that threads into the heel of the arm. The clutch came apart where the arm pins go through the mount holes. Just trying to figure out if something caught or was installed improperly.....?

 

[KnappAttack]

Yes, did notice it’s a HH wt. arm. I used to run those on my 700 Yamaha.

Pretty nasty explosion, that could kill someone. Like I said, the guy never gave any details, just photos.

Studying the photo though I don't see anything broke on the arm itself, but I do see some sort of debris on the end of the Allen bolt that threads into the heel of the arm. The clutch came apart where the arm pins go through the mount holes. Just trying to figure out if something caught or was installed improperly.....?

The tip of the Heavy Hitter arm broke and ran off the end of roller, the weight then slammed over center taking a piece of clutch with it along with the broken arm.

 

[DMCTurbo]

The tip of the Heavy Hitter arm broke and ran off the end of roller, the weight then slammed over center taking a piece of clutch with it along with the broken arm.

Exactly, same thing happened last year on my sons nytro.

 

[journeyman]

The tip of the Heavy Hitter arm broke and ran off the end of roller, the weight then slammed over center taking a piece of clutch with it along with the broken arm.

Thanks Mike, I missed the tip, I had to look a little closer.

Wonder if he contacted Lonn Peterson about that?

 

[BADSLED]

I have seen my heavy hitter weight do the same back in in 2004 on my 2 stroke Viper and destroy the primary exactly what you show in the pics. This happened to me right after my belt blew causing primary to fully shift in split second. The weights simply can not take the shock and that's what i feel led to the sudden failure.

 

[journeyman]

I have seen my heavy hitter weight do the same back in in 2004 on my 2 stroke Viper and destroy the primary exactly what you show in the pics. This happened to me right after my belt blew causing primary to fully shift in split second. The weights simply can not take the shock and that's what i feel led to the sudden failure.

Last night I went back to that post on FB, which there has been much more activity. I asked the question about the tip being broken. The owner claims it didn’t break and that it’s casting imperfections in the primary. So I’m scratching my head on this one.

The first photo on the black background is the guys weights again. It's been awhile since I ran Heavy Hitters but I attached some stock photos of their weights. I forgot they had that sharp angle on the tip end and the final bolt location is very close to the tip. But it does appear there isn't anything wrong with the guys weights.

That had to make one heck of a bang when it let loose.

 

[BADSLED]

If there is nothing wrong with the weight then either the weight bushing or roller bushing is worn allowing for the weight to pivot way past the roller into the sheave.

 

[74Nitro]

Last night I went back to that post on FB, which there has been much more activity. I asked the question about the tip being broken. The owner claims it didn’t break and that it’s casting imperfections in the primary. So I’m scratching my head on this one.

The first photo on the black background is the guys weights again. It's been awhile since I ran Heavy Hitters but I attached some stock photos of their weights. I forgot they had that sharp angle on the tip end and the final bolt location is very close to the tip. But it does appear there isn't anything wrong with the guys weights.

That had to make one heck of a bang when it let loose.

While there is no weight sitting beside it to compare to, it clearly appears to me that weight is awfully short and therefore I completely agree with Knapp's take.
In addition, many years ago I had a customer who wanted these weights in his RX-1 even after I tried to talk him out of that choice. The reason I dislike these weights is because unlike all other aftermarket weights(and most stock weights), they don't have that little curve at the engagement portion of the weight.

 

[journeyman]

While there is no weight sitting beside it to compare to, it clearly appears to me that weight is awfully short and therefore I completely agree with Knapp's take.
In addition, many years ago I had a customer who wanted these weights in his RX-1 even after I tried to talk him out of that choice. The reason I dislike these weights is because unlike all other aftermarket weights(and most stock weights), they don't have that little curve at the engagement portion of the weight.

They look short looking down over the top but look where the tip bolt is underneath, close to the edge. Now look at the stock photos of the HH’s, the tip female thread opening is close to the tip on the photo of the underside.

I ran these weights in my 2 stroke Viper for 9,000 plus miles with great success, loved them. They were recommended to me by Jeff Simons from Simons CPR, old Reichard’s Performance pipe builder. I understand the new SW is in a complete different HP category though.

 

[**sj**]

My plan would be to run the Team primary, SideWinder driven and Cat length and width belt (probably an Carlisle XS827 belt) without anything to limit the driven deflection so the belt would be full tight at idle like the Cat is doing. I'd have no desire to swap to Cats POS team driven. I think the Winder driven is fine, the problem lies with Yamahas rollers with the weight needed for the big tunes. Cat primary would also allow a bit more OD so you could gear down too with it's 1.5" width belt, allowing for better belt life with lower gearing in the chaincase.

I doubt the PB80 will run cool enough on anything over 240, but don't know till I try it. Perhaps with the fan blowing cool air in, who knows. Lots to try for me next season for sure. I don't think the PB80 spring cup is going to be durable either. The guy that bought my 1200 turbo had one break this season and it had the right spring and spring guide in it too. It's why I've been reluctant to put it on this year, they still don't have a strong proven spring cup on them.

belt/sheave angles match? assumed different

 

[**sj**]

I have wondered the same thing about the quality.

A guy from Canada posted last week on FB about his clutch exploding, I never heard any more details though. Photos attached.......

Is the Team Primary on the TCat/ZR9000 beefed up from the ones that come on the rest of the Cats?

Was wondering if the previous Yamaha primary is strong enough to hold the power considering the current SW primary might be inferior in quality?

the weight seems short and if the bushing in the roller fails or the roller flat spots..

especially with blowing a belt and sheaves slamming...well the weight can jump the roller

 

[journeyman]

the weight seems short and if the bushing in the roller fails or the roller flat spots..

especially with blowing a belt and sheaves slamming...well the weight can jump the roller

That’s the way they look though. I see you posted on the FB thread too so we’ll see if he posts more photos showing the tip better that I asked for. Hate to blame the wrong thing here. As said, his one photo of the weight leads to suspician. Not questioning anyones conclusions here. But as said I ran these weights for years. A tuned SW is definitely a different animal. It’s not without some issues as we know.

 

[**sj**]

That’s the way they look though. I see you posted on the FB thread too so we’ll see if he posts more photos showing the tip better that I asked for. Hate to blame the wrong thing here. As said, his one photo of the weight leads to suspicion. Not questioning anyones conclusions here. But as said I ran these weights for years. A tuned SW is definitely a different animal. It’s not without some issues as we know.

obviously this clutch is different AND the smaller diameter roller could lend to the ability of the weight to sneak past