Dry clutch specs?

**Tue Dec 02, 2008 7:56 pm » Post: #1 » Download Post**

Anyone know the official (if any) specs for the NSR dry clutch? Looking for dimensions such as:

Friction plate min. thickness and tab width

Steel plate min. thickness and flatness

Clutch basket wear limits

Total clutch pack thickness

I believe my clutch is close to failing and I am interested to see what the specs are from Honda. Any info is appreciated!
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Andre E. Benguerel
1996 Honda NSR250R
Daijiro Kato/Fortuna Replica #74

2000 Honda RS250R (NX5)
2008 Honda RS250R (NXA)
AFM Expert #430

**Wed Dec 10, 2008 5:56 pm » Post: #2 » Download Post**

Anyone? Is this even something that is covered in the maintenance manual?

**Wed Dec 10, 2008 8:43 pm » Post: #3 » Download Post**

If I thought my dry clutch was nearing the end of its life, I'd simply buy the whole plate & spring 'Rebuild kit' from TYGA http://tyga-performance.com/site/product_info.php?cPath=72_79_121_123&products_id=1178 £127 is a decent price.

I think Honda still also sells the dry clutch hub & basket (if those are worn), P/Ns can be found in the online parts manual.

I have a brand new rebuild kit, when i get chance I can measure the thickness of the clutch plates.
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Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30

**Wed Dec 10, 2008 10:36 pm » Post: #4 » Download Post**

Thanks Rich,

I've got a kit coming from Tyga. Just curious if this was a spec or not for the NSR. The clutch on my Ducati is very particular on how it's set up and the wear limits so it's something I keep an eye on. Probably over-thinking it!

No need to measure. Guess I'll just ride it until it slips!

Cheers,
_________________
Andre E. Benguerel
1996 Honda NSR250R
Daijiro Kato/Fortuna Replica #74

2000 Honda RS250R (NX5)
2008 Honda RS250R (NXA)
AFM Expert #430

**Thu Dec 11, 2008 9:24 pm » Post: #5 » Download Post**

In all seriousness, for OEM plates your Honda and Duke are probably worlds apart in terms of quality, which is why your nsr plates will have a far broader operational tolerance than the ducati ones. I was speaking to a guy at AP racing recently I used to work with, and he was telling me about the different specs between an aston martin clutch and a honda clutch he'd worked on, and we were talking vanquish vs. civic here. They had such a nightmare meeting Honda specs that eventually a team from Honda R&D ended up coming to the UK to oversee the production set-up! Just for a Civic...
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NSR300R - Why did i ever have a 250...

**Thu Dec 11, 2008 10:42 pm » Post: #6 » Download Post**

maxim wrote:In all seriousness, for OEM plates your Honda and Duke are probably worlds apart in terms of quality, which is why your nsr plates will have a far broader operational tolerance than the ducati ones.

Even worse, I actually have an STM Evo 48t slipper clutch which has even a higher spec than the Ducati OEM pieces. Good point though!

Like my buddy Tom says, "just shut up and ride..."

Cheers,
_________________
Andre E. Benguerel
1996 Honda NSR250R
Daijiro Kato/Fortuna Replica #74

2000 Honda RS250R (NX5)
2008 Honda RS250R (NXA)
AFM Expert #430