Teflon Coating the Release Ramps

[FSG]

Next time the trannie side cover is off I'm going to have the inside of it and the release ramps teflon coated

you can see in this pic where during the rotation the inner ramp has been levering against the side cover

you can also see where the outer ramp has been moving around

a coating will tighten up the position of both inner and outer ramps

I'll also feather the covers leading edge




this inner ramp (21deg) isn't from this side cover but you can see contact

[FSG]

I'll guarantee a larger diameter throwout bearing and thrust washers ease this condition, I might even get keen and make a longer PUSH ROD END and bush it in the inner and outer ramps

[Ohio HD]

I've always theorized that we loose clutch travel due to the ill fit of the parts in the side cover bore. Heavier clutch springs just adds to the problem.

[FSG]

   the losses all add up

[Maddo Snr]

What about trying a PTFE additive in there to see if it works Gaz?
It won't harm the wet clutch with the clutch sitting in the primary oil.
It'll tell you straight away if it works. My experience with Teflon coatings tells me it won't handle the shear forces and will deteriorate very quickly. Even Teflon slide-metals in forks are sintered to stop them failing and they have SFA pressure on them.

Light clutch tip...I've moved the lever inboard about 1/2". The extra leverage lightens up the clutch by heaps. It required an extender tab to pick up the clutch detent switch but that was easy.

My pointer finger is now 3" from the lever pivot, out from 2.5".
The mechanical advantage is increased by 15% or so. My stock clutch feel is now plenty light with a fresh cable and pivot lube and the free-play set properly.

[locker55]

FSG....is this a stock ramp or a Muller?

[FSG]

the trannie side cover is the origional from my 03 Fatty and the ramp is a stock 21 deg inner that I ran for a while

I'll take a closer look at the cover that is on the bike now when it comes off in a few weeks

Pete I'll visit SuperCheap tomorrow to get a PTFE additive, worth a try at least   

[Maddo Snr]

Just for my own info I dropped my 2500 mile gearbox oil today (it was spotless) and refilled with 250ml of Nulon 'Smooth Shift' and 700ml of gearbox oil.

The difference was quite noticeable, the pushrod comes on and off the ramps way smoother and the clutch pull is 2-3% lighter.

I'll give it a good 400 mile run and see how it holds up.

[04 SE Deuce]

Which way the bars are turned will probably make more difference than that.

[PoorUB]

Yep! I would like to see the equipment used to measure that 2-3%!

[Maddo Snr]

Yep! I would like to see the equipment used to measure that 2-3%!

I can hardly post a picture of my raised left index finger UB. I'd have the CIA after me for giving the ISIL salute... 

I should have said it feels like approximately 2-3%. I have no spring-balance built into my 'pointer'. Long story short, I could definitely feel the difference.

For the cost of two beers anyone can check it out for themselves. 

[N-gin]

I use a Teflon gel lube in the cable and noticed a heck of a lot better pull and feel on the lever.
Company called Zenex, zenalube ultra, its a clear gel lubricant.

I recommend using gloves with the product cause first time I used it, it stayed on my hands for a while. Magic hand cleaner, lava, fast orange, even Dawn soap leaves a slight film that you can still see and feel. Slick stuff for sure.

I have tried the cable lube with Graphite and that stuff is garbage. IT collects in the bottom of the cable, dries out and imbeds itself into the Teflon coated cables. Terrible stuff.

[Maddo Snr]

More on this:

Because the PTFE additive worked so well I dropped it out and made a fresh mix with 750ml of 80W150 full synthetic gear oil (Penrite) and 250ml of PTFE (Nulon 'smooth shift'). Because the PTFE thins the oil I started with 80W to bring the oil spec back closer to (factory spec) 75W.

I used full-syn because PTFE fully emulsifies in full-syn oils, it sometimes curdles in semi-syns and minerals.

Dropped in it and went for a ride. Not only is the clutch smoother and lighter, the box shifts so much smoother and more gently.

I don't know how long the effect will last but it made a significant difference to the bikes ease of shifting. I do 500-600 miles per week so we'll find out...

p.s. Looking at FSGs pics in the OP, I'm pretty sure that wear pattern is a failure of the lubricant in shear to protect the surface. It looks a lot like a grabbed slipper bearing.

[N-gin]

More on this:

Because the PTFE additive worked so well I dropped it out and made a fresh mix with 750ml of 80W150 full synthetic gear oil (Penrite) and 250ml of PTFE (Nulon 'smooth shift'). Because the PTFE thins the oil I started with 80W to bring the oil spec back closer to (factory spec) 75W.

I used full-syn because PTFE fully emulsifies in full-syn oils, it sometimes curdles in semi-syns and minerals.

Dropped in it and went for a ride. Not only is the clutch smoother and lighter, the box shifts so much smoother and more gently.

I don't know how long the effect will last but it made a significant difference to the bikes ease of shifting. I do 500-600 miles per week so we'll find out...

p.s. Looking at FSGs pics in the OP, I'm pretty sure that wear pattern is a failure of the lubricant in shear to protect the surface. It looks a lot like a grabbed slipper bearing.

Is this oil ok for the coatings on the shift forks? There was talk about this a while back on the GL-5 having ill effects on the precious metals on the forks..

[Maddo Snr]

Is this oil ok for the coatings on the shift forks? There was talk about this a while back on the GL-5 having ill effects on the precious metals on the forks..

Yep. We need to be careful with PTFE in solution N-gin.
Some PTFE composites are based on Aluminum oxides or silicates which, when the PTFE depletes, can become abrasive.

Pure PTFE is just a very slippery lubricant but not abrasive. I used a specialist hardfacing-friendly additive already approved for gearboxes.

Many years ago (80s) I worked on automotive tribology and I've never encountered any issues with properly formulated PTFE additives.

BTW, shift forks are under very light loads compared to gear tooth facings. Most slip coatings on shift forks, etc are sintered PTFE anyway...

I'll read up on the HD fork issue. Thanks for the heads up!

[FSG]

This the stuff Pete?

[Ohio HD]

Gary, this discussion has me wanting to try this product in the transmission, I have it ordered now.


https://products.liqui-moly.us/additives/mos2-antifriction-for-gears.html


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[FSG]

Brian I saw that stuff on the shelf this AM, but bought a tube of Nulon.

I'll see how the Shockproof Light (Turquoise) likes it mixed in for a while before flushing the trannie and going to a traditional (!) gear oil and Nulon mix.

[Ohio HD]

     let me know what you think of it. 

[N-gin]

 

[Maddo Snr]

This the stuff Pete?

That's it Gaz, mine has 4-500km on it now and it's still very smooth.

[HighLiner]

Where did you find either of those "on the shelf"?  My searches came up empty.

[FSG]

I've been running Shockproof Light (green/turquoise) for some time now, works good




Lets see, it's 26DegC outside, it's Sat the 7th and it'll rain on Monday morning so I'll put 2 x 50ml of this G70 in the trannie




has everyone heard the joke "I swerved to avoid a baby and fell out of bed", OK nevermind




if'n you don't know I cut off the dipstick (years ago) so it wouldn't break off and get chewed up in the gears,
also it doesn't interfere with the spring over the cable inner




now to put some K's on it   

[FSG]

Where did you find either of those "on the shelf"?  My searches came up empty.

Nulon is an Oz Product so it's available on most street corner auto shops here.

I don't know if they export their products to the USA, there's no reason not to, Penrite does.

[boooby1744]

?