Found our missing power.

[RTX]

thanks for the info stingray and shagman

stingray, so I should run the 8fp weights empty and see what I rev at. if I rev over 8800 then add the 3 gram weight?

shagman. that makes sense since it appeared the 2 sheaves were touching after 3 shims in the secondary.
any chance you would know part numbers for the primary shims?
the part # I ordered is
90201-483P9-00 I ordered 3 just incase because I am not sure on thickness
these are not the easiest things to find.

I see Goodwin performance has them but their website would not allow me to buy anything.
it is all messed up

 

[shagman]

thanks for the info stingray and shagman

stingray, so I should run the 8fp weights empty and see what I rev at. if I rev over 8800 then add the 3 gram weight?

shagman. that makes sense since it appeared the 2 sheaves were touching after 3 shims in the secondary.
any chance you would know part numbers for the primary shims?
the part # I ordered is
90201-483P9-00 I ordered 3 just incase because I am not sure on thickness
these are not the easiest things to find.

I see Goodwin performance has them but their website would not allow me to buy anything.
it is all messed up

yes that is the correct # they are 1mm each. I got mine from the Yamaha shop here. have used them for years for fine tuning. keep in mind that we are running a different helix also. stock is 43 deg. and NOS-PRO is running 45/39 and I am at 46/40. the stock one will lower your rpm's some. also the 43 will lower the top speed achieved.

 

[RTX]

shagman
yes I saw that nos-pro is running the advent-edge
45/39 helix and he also changed his spring wrap to 3-3
I am planning to do things 1 or 2 steps at a time because of low funds and also I know very little about clutching, this will be a huge learning experience for me.
Going step by step changing 1 or 2 pieces at a time will help me understand and see my improvements.
first is belt and primary spring.
next will be weights
last will be secondary spring settings and helix.

so with the stock helix, what do you suggest for a spring setting in the seconday?
also do you suggest shimming out the stock helix .090 as you wrote in the other post.

thanks again, I really appreciate you taking the time to test this stuff and post your results.

 

[shagman]

shagman
yes I saw that nos-pro is running the advent-edge
45/39 helix and he also changed his spring wrap to 3-3
I am planning to do things 1 or 2 steps at a time because of low funds and also I know very little about clutching, this will be a huge learning experience for me.
Going step by step changing 1 or 2 pieces at a time will help me understand and see my improvements.
first is belt and primary spring.
next will be weights
last will be secondary spring settings and helix.

so with the stock helix, what do you suggest for a spring setting in the seconday?
also do you suggest shimming out the stock helix .090 as you wrote in the other post.

thanks again, I really appreciate you taking the time to test this stuff and post your results.

no problem, I like to test when I have the time.

o.k. here is the order in which to do this.

1. start with the belt only. pull the 3 small bolts out of the secondary this will give you a small gain and consistent RPM's. it will also help if you shim the secondary now. RPM's will be a little low but that is o.k.
2. now do the weights and shims in primary.
3. now purchase a helix, mine is a Dalton from Ulmer.

in this order you can still ride without spending all at once. also it gives us more time to test more setups. I am waiting for cold temps to finish. should be able to this weekend. need to test on hard surface to see what the rpm's do.

 

[shagman]

shagman
yes I saw that nos-pro is running the advent-edge
45/39 helix and he also changed his spring wrap to 3-3
I am planning to do things 1 or 2 steps at a time because of low funds and also I know very little about clutching, this will be a huge learning experience for me.
Going step by step changing 1 or 2 pieces at a time will help me understand and see my improvements.
first is belt and primary spring.
next will be weights
last will be secondary spring settings and helix.

so with the stock helix, what do you suggest for a spring setting in the seconday?
also do you suggest shimming out the stock helix .090 as you wrote in the other post.

thanks again, I really appreciate you taking the time to test this stuff and post your results.

no problem, I like to test when I have the time.

o.k. here is the order in which to do this.

1. start with the belt only. pull the 3 small bolts out of the secondary this will give you a small gain and consistent RPM's. it will also help if you shim the secondary now. RPM's will be a little low but that is o.k.
2. now do the weights and shims in primary.
3. now purchase a helix, mine is a Dalton from Ulmer.

in this order you can still ride without spending all at once. also it gives us more time to test more setups. I am waiting for cold temps to finish. should be able to this weekend. need to test on hard surface to see what the rpm's do.

oops forgot add spring in step 2.

 

[RTX]

Thank you!!

 

[NOS-PRO]

Sorry, I missed a lot of posts here this afternoon.

Thanks shag and Sting for helping out.

RTX - if you put in the Green/White/Green spring with the weights empty, don't put the 3mm shims in as you will over-rev immediately. The 3gram rivots should be very cheap so I would put those in right away. If you don't have the rivots in, go with 1mm shim or none at all. you won't get the squeeze you like on the belt, but it would work. The pink spring is stock in the Viper so you don't have to order that one.

We are here for ya

 

[stingray719]

In its simplest form grn-wht-grn spring with 2mm shims and 8FP weights will give you the big boost. Lots of fine tunning from there as per helixs, etc. I cut the last coil from an old spring and ground it flat to 2mm if you are having trouble finding shims to test with.

 

[NOS-PRO]

In its simplest form grn-wht-grn spring with 2mm shims and 8FP weights will give you the big boost. Lots of fine tunning from there as per helixs, etc. I cut the last coil from an old spring and ground it flat to 2mm if you are having trouble finding shims to test with.

 

[Apex1958]

I personally handed the information you guys did in your testing, as well as the testing me and dealer did to the production manager for Yamaha Motor Sports. This man is the man and he listened and took the info. and send it on to Yamaha right in front of me. As of now he said there is nothing in the works for re-flashing the ECU but it is under investigation.
Stay tuned for the rest there is much more I will leave you guys in suspense for awhile have to go now!!

 

[stingray719]

I personally handed the information you guys did in your testing, as well as the testing me and dealer did to the production manager for Yamaha Motor Sports. This man is the man and he listened and took the info. and send it on to Yamaha right in front of me. As of now he said there is nothing in the works for re-flashing the ECU but it is under investigation.
Stay tuned for the rest there is much more I will leave you guys in suspense for awhile have to go now!!

Thanks!

By the way someone who does Yamaha testing mentioned four different ECU flash that was tested on the 2014. I have no reason to doubt him. Not sure if any of those are going to make it into the 2015 though.

 

[NOS-PRO]

I personally handed the information you guys did in your testing, as well as the testing me and dealer did to the production manager for Yamaha Motor Sports. This man is the man and he listened and took the info. and send it on to Yamaha right in front of me. As of now he said there is nothing in the works for re-flashing the ECU but it is under investigation.
Stay tuned for the rest there is much more I will leave you guys in suspense for awhile have to go now!!

Very cool bud!!!!

 

[Apex1958]

 

[RTX]

Apex1958
I read on the cat forums that there is already a service bulletin to cat dealers. If customers with the 7000 complain about performance cat dealers will change the clutch weights under the warranty/bulletin.
I also believe that belt-clutch issues will be dealt with by yamaha individually, but i will just fix mine myself.

When you say your dealer cant do a reflash, i am thinking your dealer never had to do a reflash so he is intimidated by something he is not familiar with.
I am by no means a computer guru but i am thinking a reflash could be done off of any laptop with the proper software from yamaha installed on it?
Yamaha would simply need to provide a disk with the reflash program loaded on it, a usb cable with proper connector to hook up to the sled. And a set of directions.
The dealer loads the disk into a laptop. Hooks the laptop up to the sled and follows the step by step directions.
Really does not seem like an issue to me, but what do i know?

 

[NOS-PRO]