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300Rr Clutch


heffergm
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I gather than the Montesa uses a standard clutch setup with coil springs rather than a bellville type arrangement ala GG/TRS/etc. Is there any adjustability available to change clutch pull effort, similar to the Beta where you can flip the spring retainers, or would I need to start pulling springs?

 

Just curious... I don't have one, and I've only ridden one briefly, so no idea if I'd need to do any of this, but generally I need a soft pull due some hand problems.

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The 300RR has a washer (P.N. 22403-NN4-L60) under each spring to get a little more preload than the smaller displacement 4RTs.

 

So you might be able to get a small reduction in clutch pull by removing the washers. Which would be like flipping the hat washers on a Beta.

 

I'd guess Honda put them in for a reason. So you might get a little clutch slip with the washers removed on the bigger engine. Don't know if you could find a clutch master cylinder with softer leverage ratio or smaller piston.

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Your correct on the type of clutch. I believe it is the parts are possibly the same as the CRF 250 clutch.

With these types of clutches (coil springs) you can add small washers (5-6mm) on the top of the posts under the bolts that hold the springs on. ...

 

The difference is the 4RT clutch is actuated by a slave cylinder in the clutch cover rather than rod coming through from the left side. So adding washers between the posts and clutch lifter plate 22361-NN4-000 (where they'd need to go in this configuration) moves the lifter plate out and pushes the slave piston further into the cylinder. So it'd depend on having enough back-cylinder for the slave piston, or putting more gaskets or a spacer under the clutch cover to get the slave back into its normal working range.

 

Bottom line, it might be a little more involved to go that way vs. a clutch actuated from the other side.

 

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Based on the amount of force on the standard clutch in comparison to the extra pressure created by the washers on the 300RR I would venture an educated guess that unless your riding the champ/pro line your not ever going to see any slip in the clutch to remove them. 

 

I say this because I know several people who have pulled 2 springs of the 6 in the 4RT clutch and don't ever feel slip even in 4th or 5th unless they are reving and dumping the clutch hard. 

 

I pulled 2 springs as an experiment and found it worked great unless I was in 5th gear (only time it ever slipped), however my clutch was already extra smooth and light for a 4RT, I am also using the ELF oil and I suspect it might even have had a clutch pack change from the previous owner. 

 

Please take this information as the grain of salt it is... its just my experience

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 Wasting time pulling springs, they WILL slip if you actually ride it. We have 3 2016`s std`s and the clutch pull is fine. The trick is for better leverage and/or small hands is to slowly trim the push pin until you get it where it is right for you. Very simple to do, and costs nothing, unless you need a new pin. All three riders have done this mod. Personally I prefer it almost stock, but just throwing this out there as it does work.    

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Adding washers to a Montesa clutch does the opposite to that of the top hat type on a Beta as the clutch works the opposite way to that of a Beta..                   The Montesa 300 clutch has washers under the spring to increase pressure due to the extra cc ( i.e. 300cc).  You can remove the washers under the springs for a lighter feeling clutch.  It will be just like the 260 Montesa which doesn't NOT have the washers under the springs.   I would NOT remove springs as this will make the engagement and release dodgy...

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As point of reference:  While the 300RR & 260 use the same basic clutch the addition of washers under the springs on the 300RR make all the difference.

 

If you own a 260 then it is not a real companions to a 300RR in how the clutch feels.  Basically how many people in this post have said how their Montesa feels yet don't own a 300RR? 

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Cornishwinspring     My comment about NOT removing springs has nothing to do with clutch slippage it has to do with uneven plate release and re-engagment.  This is true regardless as to the clutch being 260 or 300.  

Edited by billyt
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