OSP SR Viper belt adjuster with float

[Blue Dave]

I had my secondary machined by Ulmer as well. I like gadgets myself, but I see no need to repeatedly adjust my deflection so I just picked up some extra shims. Saves readjusting every time a clutch change is made. It's not that difficult to remove the secondary and pop 3 bolts out, add washers and reinstall. I have 1.5mm of washer in mine right now. Next step is 2.0 then 2.5 and if I keep the belt long enough then I would remove the bolts to get the 3.0 equivalent. I did opt for the quick belt change tool. I really like that idea.

To each his own I guess. For me personally I would much rather simply spin a collar trailside if needed than to pull the clutch and swap around washers.

 

[Wannaviper]

I bought one of the adjusters, and have had it sitting in the box for several weeks without installing it. I am definitely not a mechanic, and I admit that I am hesitant to mess with something that from a layman's standpint seems to work pretty well already. However, I have read enough good things about the adjuster on this thread that it sounds like I should take the plunge and install it. So I will apologize in advance for my question, but is it really that easy to install the adjuster? It sounds like you undo one bolt, pull off the secondary and remove the three shim bolts and washers, then just bolt the adjuster and secondary back on? I got the part about a dab of blue locktite, but does the secondary bolt need to be torqued to any specification, or just snugged up? Anything I am missing? Is it really that easy? Also, since I do not do my own service on the sled, when I take it back into the shop for routine maintenance are the technicians going to know what the adjuster is, and how it works? Am I going to be voiding any warranties?

 

[stingray719]

I'll have to check and see once I get to it. The way it presently sits...Allen did mention that after I get miles on a new (8dn) belt that I may need to add a thin shim. I wonder how much I will need to shim (or adjust the osp adjuster) considering I throw on a new belt at the beginning of every season and only do 1500+/- miles each season.

Very rare that I have to adjust belt deflection, but deflection is not an exact science like toe out on the front end. Last thanksgiving 3 of us with Vipers all had very different belt deflection yet all 3 sleds ran as we wanted. Unless the deflection is so tight you burn the belt idling I don't think you can say it is wrong, just not desired to your own taste. With that much leeway set it an forget it is my opinion, and if it does need adjustment I need a new belt in my opinion. BTW I did buy this OSP adjuster just have not put it on yet.

 

[csederlund]

I bought one of the adjusters, and have had it sitting in the box for several weeks without installing it. I am definitely not a mechanic, and I admit that I am hesitant to mess with something that from a layman's standpint seems to work pretty well already. However, I have read enough good things about the adjuster on this thread that it sounds like I should take the plunge and install it. So I will apologize in advance for my question, but is it really that easy to install the adjuster? It sounds like you undo one bolt, pull off the secondary and remove the three shim bolts and washers, then just bolt the adjuster and secondary back on? I got the part about a dab of blue locktite, but does the secondary bolt need to be torqued to any specification, or just snugged up? Anything I am missing? Is it really that easy? Also, since I do not do my own service on the sled, when I take it back into the shop for routine maintenance are the technicians going to know what the adjuster is, and how it works? Am I going to be voiding any warranties?

It is that easy. I'm in the same boat as you. I watched the video that OSP did and followed that. The only problem I had was trying to get the belt back on since the tool didn't spread the sheaves far enough apart. But it looks like a 7mm of PVC will solve that problem.

 

[FAMILYMAN]

Rev'd it to 60 mph then the belt finally settle to the top 1/8 to 3/16 above.


2014 viper, mpi
2009 Phazer 144"

 

[Blue Dave]

Rev'd it to 60 mph then the belt finally settle to the top 1/8 to 3/16 above.


2014 viper, mpi
2009 Phazer 144"

Excellent! Mine acts the same.

 

[FAMILYMAN]

Just in time to take to the dealer for other issues...ugg! Btw, nice talking to you Dave! You are a great asset to Ty.


2014 viper, mpi
2009 Phazer 144"

 

[Curtis Chambers]

You guys have way better access to all the neat parts in USA. We need a one stop performance shop and ulmer racing here but by the time we get it with shipping and exchange it's almost 50 percent higher. I need some of these parts but can't find anyone who carries stuff like the belt adjuster.

 

[yamaha06]

You guys have way better access to all the neat parts in USA. We need a one stop performance shop and ulmer racing here but by the time we get it with shipping and exchange it's almost 50 percent higher. I need some of these parts but can't find anyone who carries stuff like the belt adjuster.

I ordered mine right from OSP, shipping at stuff wasn't to bad and it came in pretty fast, but your right it does suck with the exchange rate and duty fees.

 

[MCApex44]

I had my secondary machined by Ulmer as well. I like gadgets myself, but I see no need to repeatedly adjust my deflection so I just picked up some extra shims. Saves readjusting every time a clutch change is made. It's not that difficult to remove the secondary and pop 3 bolts out, add washers and reinstall. I have 1.5mm of washer in mine right now. Next step is 2.0 then 2.5 and if I keep the belt long enough then I would remove the bolts to get the 3.0 equivalent. I did opt for the quick belt change tool. I really like that idea.

Same here. I also have the quick change belt tool and looks like I wont be putting my osp one on now. I will shim if/when needed.

 

[Nytro40th]

You guys have way better access to all the neat parts in USA. We need a one stop performance shop and ulmer racing here but by the time we get it with shipping and exchange it's almost 50 percent higher. I need some of these parts but can't find anyone who carries stuff like the belt adjuster.

Check sledwerx

 

[Blue Dave]

I had my secondary machined by Ulmer as well. I like gadgets myself, but I see no need to repeatedly adjust my deflection so I just picked up some extra shims. Saves readjusting every time a clutch change is made. It's not that difficult to remove the secondary and pop 3 bolts out, add washers and reinstall. I have 1.5mm of washer in mine right now. Next step is 2.0 then 2.5 and if I keep the belt long enough then I would remove the bolts to get the 3.0 equivalent. I did opt for the quick belt change tool. I really like that idea.

Please elaborate on the Ulmer machining of the secondary clutch. I am assuming that the end result is to allow the sheaves to close further together so that you can run a thinner and/or longer belt like the 8DN, correct?

If so, where exactly is he removing the material? I would guess that it is at the current contact point on the sheaves and also under the plate. Please confirm and/or elaborate.

 

[FAMILYMAN]

8dn, no machining now running 1/8-3/16 over top. Have not experience coil bind as of yet, but I think that was one of the reasons to machine?


2014 viper, mpi
2009 Phazer 144"

 

[Blue Dave]

8dn, no machining now running 1/8-3/16 over top. Have not experience coil bind as of yet, but I think that was one of the reasons to machine?


2014 viper, mpi
2009 Phazer 144"

I am not sure myself where Ulmer machines and what exactly is accomplished. I guess we are a little bit off topic here but it is relevant to those that have had the machining done AND are installing the OSP tool.

If anyone can elaborate on the Ulmer secondary clutch machining please share.

 

[stingray719]

You do not need to machine your clutch to run the 8dn. Some do to get more adjustment but it is not "required" to run the 8dn.