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Clutch plates

8K views 29 replies 10 participants last post by  Steve056  
#1 ·
I was reading and I was wondering if you guys had some insight. It was about using two cr125 steels and putting the rest of the steels from the 250r.again I do not know I read this and was curious of why. It was explaining about the honda 250r steels are .10 and cr steel .20.do people use this to make a tighter pull on the clutch? Thanks in advance for your insights.
 
#2 ·
I have only done the Neil clutch mod, which is a 400ex steel mid pack and CR500 springs with drain plug washers under them. I used Tusk frictions and steels. That clutch is still holding strong after 7 years of use.
 
#4 ·
Yeah no problem. I suppose you could google neil neil clutch mod to find posts on it. Neil Pritchard was the guy that came up with it. He recently passed away so we have lost a true 250R guru.
Loren
 
#9 ·

Neil was a great guy, and very good friend; saw & hung out with him every year for the past 5 that BDT made the Trip to PineLake Raceway, Ashtabula, OH for the Nationals...will be missed for sure. The "Neil Clutch Mod" is the old Honda Team Trick done back in the Mid to Late 80's....works well on Higher HP & TrQ engines, however; clutch pull is noticeably stiffer vs OEM.

Again, someone has posted Wrong Information.:

To be clear; the CR125R Fibers or Steels can not be used with the standard OEM Basket or Standard Billet Basket, the CR Fibers/Plates have 2 more Drive tabs vs the TRX/ATC250R Plates...therefore you Need a special Basket. Special Baskets were made years ago for using CR125R & CRF125 Plates/Fibers, Both for 7 & 8 Plate designs...They are Custom Billet with Billet Center Hubs and Billet Pressure Plate...very Pricey 100% Billet Setups. Quite Good for BB High HP & TrQ Race Engines. Both Billet versions are still in Stock at BDT Motorsports.

Carlos


 
#11 ·
Not trying to argue with you Carlos, but you mention that Neil's clutch mod was an old trick team honda used back in the 80's. If I'm not mistaken that can't be a true fact. The clutch mod requires a 400ex clutch steel and I know for certain that the 400ex didn't make its debut until 1999 which is a full decade after you say team honda came up with it......
And you accuse others of posting misinformation lol.....
 
#12 · (Edited)
No misinformation on my end, again not a full understanding on your end:

You need to go back an read what I posted; I never mentioned 400ex plates did I...? Only stated an "Old Honda Team Trick". Honda Teams had numerous clutch components (as well as just about every other part), that did not exist (yet or ever) for public consumption, that went for all the factory teams; Kawi, Yamaha, Susuki, ect... Thicker Varying Plates, Thicker Steel or Aluminum Plates, Varying Spring Lengths & Tension, Different Clutch Pressure Plate and Centers, Baskets, Washers, ect...the full range of Clutch components to increase or decrease Clutch engagement..

Honda Team used 1-2 Thicker Steel or Aluminum Plates + Regular Plates, Varying Springs, and Baskets & Centers to achieve the Clutch Feel & Performance for each individual Team Racer. Could very well be the 400ex thicker plates evolved from all this early clutch work by Honda, not certain or really know. What I do know is what I just posted, and what Neil confirmed over time.

Carlos
 
#25 ·
I did Neil's mod last summer at the same time as doing the '89 clutch pressure plate/rod & needle bearing swap when I first bought my cousins relatively stock 250R. I also lubed the oem 1988 cable with a motion pro cable luber kit thingamajig which probably had never been done ever. When the quad was purchased I had to use my entire left hand to engage the clutch and it was absolutely exhausting after about 20 minutes of riding. With everything stated that I did, it now takes only two fingers (maybe even one if I had to force myself) to pull the clutch and I could shift all day long and not get tired. Some people said Neil's mod with the 500 springs actually makes it stiffer, but definitely not for me in my situation. Clutch pull is like butter.