Arthritis and Clutch Lever

[rich_imp]

i have been using a cramp buster on my clutch grip with good results

[the Ferret]

i have been using a cramp buster on my clutch grip with good results

That's a great idea.

[cj599_imp]

The only thing i can see working is trying to find a master cylinder that has a different size piston bore, or a slave that has a larger piston witch probably does not exist, lighter clutch springs but that will induce clutch slip i bet a person could swap a slipper assembly in though

Altering master cylinder or slave cylinder piston bores give the same effect as longer levers - they decrease effort but at the expense of more lever travel needed.

You would need an externally applied booster - vacuum, hydraulic pump, electric pump or solenoid. But nothing is as simple as an rpm-assist as on the 2017 EX.

Altering master cylinder or slave cylinder piston bores give the same effect as longer levers - they decrease effort but at the expense of more lever travel needed.

You would need an externally applied booster - vacuum, hydraulic pump, electric pump or solenoid. But nothing is as simple as an rpm-assist as on the 2017 EX.
Thats basically what i was getting at,

[17-CB-002]

Just wanted to clarify something first - slipper clutches and rpm-assist clutches are 2 separate functions. The slipper function does not affect clutch lever pressure.
There are bikes with only slipper clutches, while the feature you want - rpm-assist, is on the 2017 EX model, which also has a slipper function. You could have a clutch with just rpm-assist, but it is so easy to add the slipper function (or vice versa).

These 2 innovations are so mechanically and cost effective, they will likely become standard equipment on most bikes.

With rpm-assist, like the CB650R also has, ramps in the clutch help force the clutch plates together, something that only springs could do before. On the 2017 EX, only 3 springs are used, instead of 6 (although the 3 are heavier ones). I believe lever pressure was about 17% lighter

A longer lever will give lighter lever pull, but needs extra travel to engage/disengage. Same thing with a smaller clutch master cylinder bore. There is no real way to cheat physics, except with the rpm-assist in the clutch itself.

Adapting the 2017 EX parts has been tried, but the results were not completed in this thread:
http://cb1100forum.com/forum/showthread.php?tid=12071

I believe it would have worked properly with just the right spacer installed, but I wasn't there.

Thanks for the clarification PD, personally I never knew that there was any difference between "clutch assist" & "RPM assist", since all road test reports I read only mentioned of the 17% lever effort reduction due to the "slipper clutch".
The "RPM Assist" technology part was never ever mentioned; however, it did mention of the high rpm deceleration causing rear wheel hopping reduction due to the cam design inside the clutch basket. The 2-way cam design advantage also apply during acceleration for a lighter lever application.

I did not put 2 & 2 together - stupid me.

Thanks for the information.
Regards
Alain

[pekingduck]

The first time I encountered an rpm-assist clutch was on the 2016 Triumph Street Twin, which they called "Torque Assist". It was noticeably lighter than the clutch on my T100 Bonnie. hmmm.
But they don't mention a slipper clutch. Looking at their entire range, some have "Torque Assist", some have a slipper clutch, but only the new 660 Trident triple has both.

i have been using a cramp buster on my clutch grip with good results

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?

Just wanted to clarify something first - slipper clutches and rpm-assist clutches are 2 separate functions. The slipper function does not affect clutch lever pressure.
There are bikes with only slipper clutches, while the feature you want - rpm-assist, is on the 2017 EX model, which also has a slipper function. You could have a clutch with just rpm-assist, but it is so easy to add the slipper function (or vice versa).

These 2 innovations are so mechanically and cost effective, they will likely become standard equipment on most bikes.

With rpm-assist, like the CB650R also has, ramps in the clutch help force the clutch plates together, something that only springs could do before. On the 2017 EX, only 3 springs are used, instead of 6 (although the 3 are heavier ones). I believe lever pressure was about 17% lighter

A longer lever will give lighter lever pull, but needs extra travel to engage/disengage. Same thing with a smaller clutch master cylinder bore. There is no real way to cheat physics, except with the rpm-assist in the clutch itself.

Adapting the 2017 EX parts has been tried, but the results were not completed in this thread:
http://cb1100forum.com/forum/showthread.php?tid=12071

I believe it would have worked properly with just the right spacer installed, but I wasn't there.

Thanks for the clarification PD, personally I never knew that there was any difference between "clutch assist" & "RPM assist", since all road test reports I read only mentioned of the 17% lever effort reduction due to the "slipper clutch".
The "RPM Assist" technology part was never ever mentioned; however, it did mention of the high rpm deceleration causing rear wheel hopping reduction due to the cam design inside the clutch basket. The 2-way cam design advantage also apply during acceleration for a lighter lever application.

I did not put 2 & 2 together - stupid me.

Thanks for the information.
Regards
Alain

Thanks for the clarification PD, personally I never knew that there was any difference between "clutch assist" & "RPM assist", since all road test reports I read only mentioned of the 17% lever effort reduction due to the "slipper clutch".
The "RPM Assist" technology part was never ever mentioned; however, it did mention of the high rpm deceleration causing rear wheel hopping reduction due to the cam design inside the clutch basket. The 2-way cam design advantage also apply during acceleration for a lighter lever application.

I did not put 2 & 2 together - stupid me.

No, certainly not stupid, just confusing. The press has been somewhat confused by referring to it as a slipper clutch. Slipper clutches preceded the RPM-assist (or Torque-assist or something-assist), and when this function was added to bikes with a slipper clutch, it was just referred to as slipper clutch. (most motorcycle media are not so technical any more.)

Interestingly, the Africa Twin has a slipper clutch and a "cam-assist", but it is not mentioned in their website. Way to go, Honda.

Thanks for the information.
Regards
Alain

[Haggard Rider_imp]

My 2020 RS has an extremely light slip assist clutch, easily a two finger pull, indeed a single finger pull if necessary.

I can vouch for Honda's implementation making for nice and easy changes.

[the Ferret]

The first time I encountered an rpm-assist clutch was on the 2016 Triumph Street Twin, which they called "Torque Assist". It was noticeably lighter than the clutch on my T100 Bonnie. hmmm.
But they don't mention a slipper clutch. Looking at their entire range, some have "Torque Assist", some have a slipper clutch, but only the new 660 Trident triple has both.

i have been using a cramp buster on my clutch grip with good results

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?

Just wanted to clarify something first - slipper clutches and rpm-assist clutches are 2 separate functions. The slipper function does not affect clutch lever pressure.
There are bikes with only slipper clutches, while the feature you want - rpm-assist, is on the 2017 EX model, which also has a slipper function. You could have a clutch with just rpm-assist, but it is so easy to add the slipper function (or vice versa).

These 2 innovations are so mechanically and cost effective, they will likely become standard equipment on most bikes.

With rpm-assist, like the CB650R also has, ramps in the clutch help force the clutch plates together, something that only springs could do before. On the 2017 EX, only 3 springs are used, instead of 6 (although the 3 are heavier ones). I believe lever pressure was about 17% lighter

A longer lever will give lighter lever pull, but needs extra travel to engage/disengage. Same thing with a smaller clutch master cylinder bore. There is no real way to cheat physics, except with the rpm-assist in the clutch itself.

Adapting the 2017 EX parts has been tried, but the results were not completed in this thread:
http://cb1100forum.com/forum/showthread.php?tid=12071

I believe it would have worked properly with just the right spacer installed, but I wasn't there.

Thanks for the clarification PD, personally I never knew that there was any difference between "clutch assist" & "RPM assist", since all road test reports I read only mentioned of the 17% lever effort reduction due to the "slipper clutch".
The "RPM Assist" technology part was never ever mentioned; however, it did mention of the high rpm deceleration causing rear wheel hopping reduction due to the cam design inside the clutch basket. The 2-way cam design advantage also apply during acceleration for a lighter lever application.

I did not put 2 & 2 together - stupid me.

Thanks for the information.
Regards
Alain

Thanks for the clarification PD, personally I never knew that there was any difference between "clutch assist" & "RPM assist", since all road test reports I read only mentioned of the 17% lever effort reduction due to the "slipper clutch".
The "RPM Assist" technology part was never ever mentioned; however, it did mention of the high rpm deceleration causing rear wheel hopping reduction due to the cam design inside the clutch basket. The 2-way cam design advantage also apply during acceleration for a lighter lever application.

I did not put 2 & 2 together - stupid me.

No, certainly not stupid, just confusing. The press has been somewhat confused by referring to it as a slipper clutch. Slipper clutches preceded the RPM-assist (or Torque-assist or something-assist), and when this function was added to bikes with a slipper clutch, it was just referred to as slipper clutch. (most motorcycle media are not so technical any more.)

Interestingly, the Africa Twin has a slipper clutch and a "cam-assist", but it is not mentioned in their website. Way to go, Honda.

Thanks for the information.
Regards
Alain

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?
A place to rest the arthritic hand without having to "grip and hold" the left hand grip. My right arthritic hand loves my crampbuster. Would work the same on the clutch side I suppose.

[pekingduck]

The first time I encountered an rpm-assist clutch was on the 2016 Triumph Street Twin, which they called "Torque Assist". It was noticeably lighter than the clutch on my T100 Bonnie. hmmm.
But they don't mention a slipper clutch. Looking at their entire range, some have "Torque Assist", some have a slipper clutch, but only the new 660 Trident triple has both.

i have been using a cramp buster on my clutch grip with good results

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?

Just wanted to clarify something first - slipper clutches and rpm-assist clutches are 2 separate functions. The slipper function does not affect clutch lever pressure.
There are bikes with only slipper clutches, while the feature you want - rpm-assist, is on the 2017 EX model, which also has a slipper function. You could have a clutch with just rpm-assist, but it is so easy to add the slipper function (or vice versa).

These 2 innovations are so mechanically and cost effective, they will likely become standard equipment on most bikes.

With rpm-assist, like the CB650R also has, ramps in the clutch help force the clutch plates together, something that only springs could do before. On the 2017 EX, only 3 springs are used, instead of 6 (although the 3 are heavier ones). I believe lever pressure was about 17% lighter

A longer lever will give lighter lever pull, but needs extra travel to engage/disengage. Same thing with a smaller clutch master cylinder bore. There is no real way to cheat physics, except with the rpm-assist in the clutch itself.

Adapting the 2017 EX parts has been tried, but the results were not completed in this thread:
http://cb1100forum.com/forum/showthread.php?tid=12071

I believe it would have worked properly with just the right spacer installed, but I wasn't there.

Thanks for the clarification PD, personally I never knew that there was any difference between "clutch assist" & "RPM assist", since all road test reports I read only mentioned of the 17% lever effort reduction due to the "slipper clutch".
The "RPM Assist" technology part was never ever mentioned; however, it did mention of the high rpm deceleration causing rear wheel hopping reduction due to the cam design inside the clutch basket. The 2-way cam design advantage also apply during acceleration for a lighter lever application.

I did not put 2 & 2 together - stupid me.

Thanks for the information.
Regards
Alain

Thanks for the clarification PD, personally I never knew that there was any difference between "clutch assist" & "RPM assist", since all road test reports I read only mentioned of the 17% lever effort reduction due to the "slipper clutch".
The "RPM Assist" technology part was never ever mentioned; however, it did mention of the high rpm deceleration causing rear wheel hopping reduction due to the cam design inside the clutch basket. The 2-way cam design advantage also apply during acceleration for a lighter lever application.

I did not put 2 & 2 together - stupid me.

No, certainly not stupid, just confusing. The press has been somewhat confused by referring to it as a slipper clutch. Slipper clutches preceded the RPM-assist (or Torque-assist or something-assist), and when this function was added to bikes with a slipper clutch, it was just referred to as slipper clutch. (most motorcycle media are not so technical any more.)

Interestingly, the Africa Twin has a slipper clutch and a "cam-assist", but it is not mentioned in their website. Way to go, Honda.

Thanks for the information.
Regards
Alain

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?
A place to rest the arthritic hand without having to "grip and hold" the left hand grip. My right arthritic hand loves my crampbuster. Would work the same on the clutch side I suppose.

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?
A place to rest the arthritic hand without having to "grip and hold" the left hand grip. My right arthritic hand loves my crampbuster. Would work the same on the clutch side I suppose.

Hmm, I get it - it helps relax the hand, but not when using the clutch. Simple enough to try.

[the Ferret]

The first time I encountered an rpm-assist clutch was on the 2016 Triumph Street Twin, which they called "Torque Assist". It was noticeably lighter than the clutch on my T100 Bonnie. hmmm.
But they don't mention a slipper clutch. Looking at their entire range, some have "Torque Assist", some have a slipper clutch, but only the new 660 Trident triple has both.

i have been using a cramp buster on my clutch grip with good results

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?

Just wanted to clarify something first - slipper clutches and rpm-assist clutches are 2 separate functions. The slipper function does not affect clutch lever pressure.
There are bikes with only slipper clutches, while the feature you want - rpm-assist, is on the 2017 EX model, which also has a slipper function. You could have a clutch with just rpm-assist, but it is so easy to add the slipper function (or vice versa).

These 2 innovations are so mechanically and cost effective, they will likely become standard equipment on most bikes.

With rpm-assist, like the CB650R also has, ramps in the clutch help force the clutch plates together, something that only springs could do before. On the 2017 EX, only 3 springs are used, instead of 6 (although the 3 are heavier ones). I believe lever pressure was about 17% lighter

A longer lever will give lighter lever pull, but needs extra travel to engage/disengage. Same thing with a smaller clutch master cylinder bore. There is no real way to cheat physics, except with the rpm-assist in the clutch itself.

Adapting the 2017 EX parts has been tried, but the results were not completed in this thread:
http://cb1100forum.com/forum/showthread.php?tid=12071

I believe it would have worked properly with just the right spacer installed, but I wasn't there.

Thanks for the clarification PD, personally I never knew that there was any difference between "clutch assist" & "RPM assist", since all road test reports I read only mentioned of the 17% lever effort reduction due to the "slipper clutch".
The "RPM Assist" technology part was never ever mentioned; however, it did mention of the high rpm deceleration causing rear wheel hopping reduction due to the cam design inside the clutch basket. The 2-way cam design advantage also apply during acceleration for a lighter lever application.

I did not put 2 & 2 together - stupid me.

Thanks for the information.
Regards
Alain

Thanks for the clarification PD, personally I never knew that there was any difference between "clutch assist" & "RPM assist", since all road test reports I read only mentioned of the 17% lever effort reduction due to the "slipper clutch".
The "RPM Assist" technology part was never ever mentioned; however, it did mention of the high rpm deceleration causing rear wheel hopping reduction due to the cam design inside the clutch basket. The 2-way cam design advantage also apply during acceleration for a lighter lever application.

I did not put 2 & 2 together - stupid me.

No, certainly not stupid, just confusing. The press has been somewhat confused by referring to it as a slipper clutch. Slipper clutches preceded the RPM-assist (or Torque-assist or something-assist), and when this function was added to bikes with a slipper clutch, it was just referred to as slipper clutch. (most motorcycle media are not so technical any more.)

Interestingly, the Africa Twin has a slipper clutch and a "cam-assist", but it is not mentioned in their website. Way to go, Honda.

Thanks for the information.
Regards
Alain

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?
A place to rest the arthritic hand without having to "grip and hold" the left hand grip. My right arthritic hand loves my crampbuster. Would work the same on the clutch side I suppose.

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?
A place to rest the arthritic hand without having to "grip and hold" the left hand grip. My right arthritic hand loves my crampbuster. Would work the same on the clutch side I suppose.

Hmm, I get it - it helps relax the hand, but not when using the clutch. Simple enough to try.

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?
A place to rest the arthritic hand without having to "grip and hold" the left hand grip. My right arthritic hand loves my crampbuster. Would work the same on the clutch side I suppose.

Hmm, I get it - it helps relax the hand, but not when using the clutch. Simple enough to try.
Well it wont interfere with the clutch operation so nothing to lose trying. I know when I keep my throttle hand wrapped around the throttle it hurts to open it back up.

I'm going to give it a try as soon as I can get back on 2 wheels.

[GoldOxide_imp]

The first time I encountered an rpm-assist clutch was on the 2016 Triumph Street Twin, which they called "Torque Assist". It was noticeably lighter than the clutch on my T100 Bonnie. hmmm.
But they don't mention a slipper clutch. Looking at their entire range, some have "Torque Assist", some have a slipper clutch, but only the new 660 Trident triple has both.

i have been using a cramp buster on my clutch grip with good results

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?

Just wanted to clarify something first - slipper clutches and rpm-assist clutches are 2 separate functions. The slipper function does not affect clutch lever pressure.
There are bikes with only slipper clutches, while the feature you want - rpm-assist, is on the 2017 EX model, which also has a slipper function. You could have a clutch with just rpm-assist, but it is so easy to add the slipper function (or vice versa).

These 2 innovations are so mechanically and cost effective, they will likely become standard equipment on most bikes.

With rpm-assist, like the CB650R also has, ramps in the clutch help force the clutch plates together, something that only springs could do before. On the 2017 EX, only 3 springs are used, instead of 6 (although the 3 are heavier ones). I believe lever pressure was about 17% lighter

A longer lever will give lighter lever pull, but needs extra travel to engage/disengage. Same thing with a smaller clutch master cylinder bore. There is no real way to cheat physics, except with the rpm-assist in the clutch itself.

Adapting the 2017 EX parts has been tried, but the results were not completed in this thread:
http://cb1100forum.com/forum/showthread.php?tid=12071

I believe it would have worked properly with just the right spacer installed, but I wasn't there.

Thanks for the clarification PD, personally I never knew that there was any difference between "clutch assist" & "RPM assist", since all road test reports I read only mentioned of the 17% lever effort reduction due to the "slipper clutch".
The "RPM Assist" technology part was never ever mentioned; however, it did mention of the high rpm deceleration causing rear wheel hopping reduction due to the cam design inside the clutch basket. The 2-way cam design advantage also apply during acceleration for a lighter lever application.

I did not put 2 & 2 together - stupid me.

Thanks for the information.
Regards
Alain

Thanks for the clarification PD, personally I never knew that there was any difference between "clutch assist" & "RPM assist", since all road test reports I read only mentioned of the 17% lever effort reduction due to the "slipper clutch".
The "RPM Assist" technology part was never ever mentioned; however, it did mention of the high rpm deceleration causing rear wheel hopping reduction due to the cam design inside the clutch basket. The 2-way cam design advantage also apply during acceleration for a lighter lever application.

I did not put 2 & 2 together - stupid me.

No, certainly not stupid, just confusing. The press has been somewhat confused by referring to it as a slipper clutch. Slipper clutches preceded the RPM-assist (or Torque-assist or something-assist), and when this function was added to bikes with a slipper clutch, it was just referred to as slipper clutch. (most motorcycle media are not so technical any more.)

Interestingly, the Africa Twin has a slipper clutch and a "cam-assist", but it is not mentioned in their website. Way to go, Honda.

Thanks for the information.
Regards
Alain

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?
A place to rest the arthritic hand without having to "grip and hold" the left hand grip. My right arthritic hand loves my crampbuster. Would work the same on the clutch side I suppose.

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?
A place to rest the arthritic hand without having to "grip and hold" the left hand grip. My right arthritic hand loves my crampbuster. Would work the same on the clutch side I suppose.

Hmm, I get it - it helps relax the hand, but not when using the clutch. Simple enough to try.

Just curious, how does a Crampbuster on the left grip help? Isn't it just a throttle assist for the right side?
A place to rest the arthritic hand without having to "grip and hold" the left hand grip. My right arthritic hand loves my crampbuster. Would work the same on the clutch side I suppose.

Hmm, I get it - it helps relax the hand, but not when using the clutch. Simple enough to try.
Well it wont interfere with the clutch operation so nothing to lose trying. I know when I keep my throttle hand wrapped around the throttle it hurts to open it back up.

I'm going to give it a try as soon as I can get back on 2 wheels.

Shouldn't be an issue on a NC750XD left grip.