It's finally here folks! Today I received the long awaited preproduction diaphragm clutch spring from EBC.

For those who haven't been following the other threads, EBC has had a clutch spring listed on many sites for some time now; unfortunately the manufacturer they contracted out to produce the springs used the wrong grade steel and they were too soft. Softer even than the stock Yamaha spring. So they've been waiting for months now on a new supplier to produce them.

Not long ago I was fortunate to speak with the EBC rep here in the US, who was kind enough to offer me a preproduction version to try out, in order to determine if the new spring is good enough for release. I don't know how much stiffer it is than the stock Yamaha spring, only that it's supposed to be better. So keep your fingers crossed, if this one works, then EBC will be one step closer to releasing them to the general public.

For the record, I don't work for EBC, I'm not a shop or independent testing facility, nor anything official like that, just a fellow Roadstar owner, who's been dealing with the same clutch spring issues as everyone else. I just happened to be in the right place at the right time when the rep made the offer. Any opinions I give here about the EBC spring is just that; so keep it in mind and I will try to be as objective and thorough as possible.

I plan to install it this weekend. Stay tuned to this space for further developments.



Doc_V

Let's hope it works for ya

Well... I'm waiting!!!

I've got one on back order with Tim Bondurant. Hurry up already!

is it in yet?did he say what rock well hardness they are tempered to?

HEAVY METAL NOISE 101 wrote:
is it in yet?did he say what rock well hardness they are tempered to?

I've got a group ride tomorrow, so Sunday will be the install day. No data yet on the specs, I suppose that's why I get to play guinea pig. I guess as long as the clutch doesn't slip, and the handle doesn't require a Neanderthal's grip, then were OK.

Nice price on the new EBC clutch spring,hope it works out!

There's also another alt,it's a Yamaha speedstar hi perf clutch spring that's approx 20-25% stiffer/stronger then the stock R* spring thats been on the market for yrs now so should not have any issue.

The 20-25% more clamping power it sas should elimnate elutch slippage from ever happening again espcially for stock or moderately moded bikes without high compression pistons & or perf cams etc.

This spring is avail right now though at a higher cost($91) but is still much less then the Barnett clutch upgrade at $230-250 on avg.

Heres the info on it pasted below.

scott

-====================================================

* LINK TO CLUTCH SPRINGHOPE IT WORKS)

http://cart.babbittsonline.com/pages/catalogs/detail/26/213/412/5382/1/0/0/1/4/90/64/316/competition-clutch-spring.aspx

* INFO ON CLUTCH SPRING:

Yamaha Competition Clutch Spring

Offers increased clutch capacity. Reduces clutch slippage and resultant heat build-up under heavy use.

Buy on-line today from Babbitts Sports Center

Manufactured By: Yamaha

Stage IV for 98 & 102 cu. in.
The spring rate is about 25% stiffer than the stock spring to handle the increased power output from Stage IV configuration. Fits '99-'07Road Star models

Item: SPD-4WM09-84-10
Usually Ships In:
5-6 Business Days

MSRP: $113.95
Our Price: $91.16

Babbitts Sports Center
3712 Airline Rd.
Muskegon MI 49444
Phone: 231-737-4542
Email: orderinfo@babbittsonline.com

Actually, the Star Performance spring is no longer available. I tired purchasing one from 3 different sources, including the dealer and all said the same thing. That's how I ended up dealing with EBC. If you can find someone who still has some old inventory, let us know.

Scott-W,

I don't know where you were looking at the Barnett Clutch conversion at but $230-250 is waaay high.

$144 Phat Performance

$139 SS Custom Cycle

Sure they're both more than the EBC, but it has been available for quite some time and is proven to work properly. Sorry for the hijack, now back to your regularly scheduled thread.

Yah, $140 seems to be around what I've seen too.

...on a side note, going to go start on the install once I finish my coffee. Fingers crossed.