sledheadgeorge
TY 4 Stroke God
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Isn't clutching wonderful 
ptt
Guest
RJH is right in this statement " he needs to balance that with the secondary "
I was using the #'s as examples. but if you were to look at a
O-S-O "spring rate" it's appox 313 pds. at full compression.
"My equipment informs me what a spring is doing exactly from start to finish"
By equipment I assume your sled.
It is said that a primary spring with less force will lower RPM,(which I agree with to a point)
Why is it that culvert experienced an increase in RPM?
Yes you can change to a different spring, but to understand why an event happened is valuable also
I was using the #'s as examples. but if you were to look at a
O-S-O "spring rate" it's appox 313 pds. at full compression.
"My equipment informs me what a spring is doing exactly from start to finish"
By equipment I assume your sled.
It is said that a primary spring with less force will lower RPM,(which I agree with to a point)
Why is it that culvert experienced an increase in RPM?
Yes you can change to a different spring, but to understand why an event happened is valuable also
**sj**
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turk...different conditions?
did you run on glare ice one time and in the soft and deep the next?
assuming you havent changed a thing in the secondary...the secondary is a constant..
it is impossible for the same weights to run higher rpms with a softer spring (total force)
*equal conditions with no mechanical interference*
....Maybe you have confused which one is the softer spring...
did you run on glare ice one time and in the soft and deep the next?
assuming you havent changed a thing in the secondary...the secondary is a constant..
it is impossible for the same weights to run higher rpms with a softer spring (total force)
*equal conditions with no mechanical interference*
....Maybe you have confused which one is the softer spring...
RJH
TY 4 Stroke Junkie
ptt said:O-S-O "spring rate" it's appox 313 pds. at full compression.
"My equipment informs me what a spring is doing exactly from start to finish" By equipment I assume your sled.
It is said that a primary spring with less force will lower RPM,(which I agree with to a point) Why is it that culvert experienced an increase in RPM?
Nice boat man…I grew up in Chateauguay – sure was fun there - back then!
313 #’s – holy crap…. They must have some heavy weights when using that spring in a sled, that’s hard to believe.
Spring Equipment:
We were heavily involved in racing at one time and we built a spring tester – we actually had graph overlays of each springs curve. When we put a spring in – we had a good idea of what we wanted to change.
Most definitely – softer spring – lowers rpm range. Can be good or bad.
Culvert – he either read the colors wrong or the spring is sacked.
Hey…last year we did some race Doo stuff. I had a box full of used Team Industry secondary springs - not one spring , no matter what number – came to the minimum spec of the stock race spring. Every spring had lost it memory.
As a side note – I’m old school - no rollers for me - but I was wowed by the Team Secondary when I started to play with it. I have never felt so much feedback from a secondary before. Maybe using Yamaha’s new big primary monster springs - the team would work well.
culvert
Expert
Hey Guys,
I did not get my colors wrong. That much I know. It was brand new not a mark on it.
It is a Y-P-Y preload 30, rate 2.50, force 113
Not sure were or how you are getting 313# for the O-S-O spring book rates it at 142# total force
Hope Turks new spring gets here soon so I can test this weekend.
I did not get my colors wrong. That much I know. It was brand new not a mark on it.
It is a Y-P-Y preload 30, rate 2.50, force 113
Not sure were or how you are getting 313# for the O-S-O spring book rates it at 142# total force
Hope Turks new spring gets here soon so I can test this weekend.
grader
TY 4 Stroke Master
the o-s-o is 142kg, or 313lbs, and is one of the best things that can be installed to a stock rx1 to wake it up and make it go.
RJH
TY 4 Stroke Junkie
Maybe you did this:
Had everything stock – got good rpm with soft spring. You then installed new clutch kit and then put the stronger spring in at that time.
The rpm was lower –because the new kit has changed the flinger weight – it simply requires a stronger spring – or the secondary needs a bit more twist to balance it. Probably best to work with the secondary – if that is the case to get some balance back.
So…if you tried both springs in the stock set up – you would have seen a a jump in rpm.
Had everything stock – got good rpm with soft spring. You then installed new clutch kit and then put the stronger spring in at that time.
The rpm was lower –because the new kit has changed the flinger weight – it simply requires a stronger spring – or the secondary needs a bit more twist to balance it. Probably best to work with the secondary – if that is the case to get some balance back.
So…if you tried both springs in the stock set up – you would have seen a a jump in rpm.
ptt
Guest
Nice boat man…I grew up in Chateauguay – sure was fun there - back then!
Thanks for the comment on the boat but you lost on "chateauguay."
Culvert if I can ask when you put the lighter spring in did you have a chance to check your primary temp? Did you smell rubber when accelerating?
You went from a spring with a total force of 303 to a spring with 248.
That's quite a change to do without looking at the rest of the system.
When your testing this weekend check your clutch temp's, the temp. is telling you something.
If you can take notes, valuable info.
What is people's opinion on why culvert's spring change did not have the effect that basic clutch theory says it should?
Thanks for the comment on the boat but you lost on "chateauguay."
Culvert if I can ask when you put the lighter spring in did you have a chance to check your primary temp? Did you smell rubber when accelerating?
You went from a spring with a total force of 303 to a spring with 248.
That's quite a change to do without looking at the rest of the system.
When your testing this weekend check your clutch temp's, the temp. is telling you something.
If you can take notes, valuable info.
What is people's opinion on why culvert's spring change did not have the effect that basic clutch theory says it should?
culvert
Expert
Ok, here is the new spring TURK sent out
Softest they make B-P-B 30/2.00/96 Sled is back down to 10500.
I will be playing lots this wknd and see what the pri temps are. Also the marker on clutch face to see where its riding.
I find that I dont have the same topend as last year with stock 8BU-10 weights, and the rest of my set-up in first post.
I would like to try a Y-S-Y or the O-S-O to see what differnece that makes.
THANKS AGAIN FOR THE PARTS TURK
Softest they make B-P-B 30/2.00/96 Sled is back down to 10500.
I will be playing lots this wknd and see what the pri temps are. Also the marker on clutch face to see where its riding.
I find that I dont have the same topend as last year with stock 8BU-10 weights, and the rest of my set-up in first post.
I would like to try a Y-S-Y or the O-S-O to see what differnece that makes.
THANKS AGAIN FOR THE PARTS TURK
culvert
Expert
Ok... here it is. Got the sled RPM to where I need them.
I'm running Heavy Hitters, 14.5mm rollers, B-P-B.
Secondary is a 54/42helix with silver spring and I backed it down to 70*
I'm now at 9800/10000. Thanks everyone for input. Now I can go fill the NOS bottle and give that button a try.
I'm running Heavy Hitters, 14.5mm rollers, B-P-B.
Secondary is a 54/42helix with silver spring and I backed it down to 70*
I'm now at 9800/10000. Thanks everyone for input. Now I can go fill the NOS bottle and give that button a try.
