Radial clutch MC. Cylinder size

[Mototrick]

Hi, I've been on a long trek through the old posts but can't find exactly the info i'm looking for.
I'm considering changing the standard clutch MC with a radial one, seems to be a few of the HC1 Magura KTM ones on eBay. The most common cylinder size is 18mm, would this be okay for the firestorm? Has anyone had experience with the Magura HC1? Is it a direct fit or does the reservoir get in the way of the fairing?
This is only the start of the thought process, i'm open to suggestions if anyone knows of a better solution. My commute takes in a LOT of traffic these days and i can barley operate the clutch at the end of my journey. I rebuilt the standard MC and SC a few years ago, with a new hose too. I think i'm just a wimp, but if i can reduce the lever pull by 20-30% it's got to help.

Cheers

Lee

[MK_WF]

In that case I'd have a cheapskate solution.
Get the clutch pump assy from the CBR1000 SC57.
It's kind of plug & play on the SC36 but features a smaller diameter of the piston which enlarges the hydraulic ratio and reduces lever force.
I've got one on mine and it works just fine.

The other point may not be feasible for you but I fitted an Ignitech ignition which allows for a shift sensor in the linkage. So I can upshift without using the clutch at all making it a kind of semi-automatic transmission.
Due to the crappy Honda mechanism, the first two gears don't work too well, so I'm using it from 3 to 6.
Here's an onboard video

[MacV2]

Venhill list these with differnt size ratios.

As for the res pot fairing interface you'll only know once fitted.

I've got a Brembo one on one of my bikes & the res pot is remotly fitted to the top yoke, so if it does hit the fairing move the res pot...

https://www.venhill.co.uk/controls-amp- ... inder.html

[Mototrick]

Thanks for the input, SC57 would be 2004-2007 right?
MacV2, do you know the cylinder size of the Brembo you fitted? Do you think it makes a difference?

[mik_str]

I've been running the stock Brembo unit from a Monster 1100 (15 x 18) for many years now and it works very well. Effort at the lever is slightly lighter than stock and they are a dime a dozen on eBay.

[MacV2]

Thanks for the input, SC57 would be 2004-2007 right?
MacV2, do you know the cylinder size of the Brembo you fitted? Do you think it makes a difference?

I didnt fit it TBH so no idea of cly size... dont have an issue with the std clutch so it made no difference to me...

[xeris]

Also using Brembo clutch master from a 09'-11' Ducati Monster. Pull is a bit lighter, but also using an Oberon slave.

[MK_WF]

BTW: Found the missing SC57 diameter

SC36: 14 mm
SC57: 1/2" = 12.7 mm

The reduction in lever force is around 20%.

If you're switching to the mentioned Brembo radial type the diameter isn't the only parameter to look at.
Radial pumps usually have a higher mechanical ratio, i.e. it may happen you have a lighter actuation despite a larger diameter.

[Mototrick]

Appreciate all the info guys

[tony.mon]

BTW: Found the missing SC57 diameter

SC36: 14 mm
SC57: 1/2" = 12.7 mm

The reduction in lever force is around 20%.

If you're switching to the mentioned Brembo radial type the diameter isn't the only parameter to look at.
Radial pumps usually have a higher mechanical ratio, i.e. it may happen you have a lighter actuation despite a larger diameter.

Very true. I used a KTM RC8 radial clutch mc on my SP2 and it worked perfectly but was much lighter. There was no difference in throw, so there was no difficulty selecting neutral or unusual clunks selecting first.
To be fair I didn't have any problem with the standard one but I'd fitted a Brembo radial brake side so wanted to have a radial clutch pump to match.

It's all just bling, innit?

[Mototrick]

For anyone interested, i ended up buying a Brembo clutch master cylinder and lever from eBay. I could tell by the photo's that it was probably a 15x18 or 15x19. From a Ducati Panigale.



Fitting was straightforward-ish. I had to reverse the existing hydraulic line to the slave cylinder so the hose connection bolts would line up.





The pitch of the Brembo banjo bolt is different to the existing one i had, (M10 x 1 x 20mm) so i had to get one from a local dealer.
Once bled through the next job was adapting the Brembo micro switch wiring to match the Firestorm loom. I chopped the wiring on the Brembo in half and soldered on 2 6.3mm spade connectors.



Then it was just a case of lining everything up and trying it. Initially i had the adjustment screw for the Brembo wound all the way in. In this position the clutch was just starting to grab. I found adjusting to a mid position worked. While i was pumping through fresh DOT4 i didn't think the lever pull felt any different but once out on the road with gloves on i'd say it was easily 30-40% lighter.
Quite pleased with the overall outcome.

[tony.mon]

Good result and write-up.
Does it clear the fairing ok?

[Mototrick]

The only clearance issue was with the adjuster on the lever. I had to place the MC just about as high up on the clipon as it would go, but that seems to be a natural position for it.

[sirch345]

For anyone interested, i ended up buying a Brembo clutch master cylinder and lever from eBay. I could tell by the photo's that it was probably a 15x18 or 15x19. From a Ducati Panigale.



Fitting was straightforward-ish. I had to reverse the existing hydraulic line to the slave cylinder so the hose connection bolts would line up.





The pitch of the Brembo banjo bolt is different to the existing one i had, (M10 x 1 x 20mm) so i had to get one from a local dealer.
Once bled through the next job was adapting the Brembo micro switch wiring to match the Firestorm loom. I chopped the wiring on the Brembo in half and soldered on 2 6.3mm spade connectors.



Then it was just a case of lining everything up and trying it. Initially i had the adjustment screw for the Brembo wound all the way in. In this position the clutch was just starting to grab. I found adjusting to a mid position worked. While i was pumping through fresh DOT4 i didn't think the lever pull felt any different but once out on the road with gloves on i'd say it was easily 30-40% lighter.
Quite pleased with the overall outcome.

Many thanks for taking the time to post the photo's and to lets us know how things worked out for you. Glad you're happy with the modification

Chris.

[Twitchy]

Hi have ZX14 radial clutch (3/4") & brake (11/16") masters with SP2 calipers and HEL lines. The braking is a million times better. I used bendy brackets from Kurveygirl to move the pots inboard as they did foul the fairing, and the masters fouled the dash cluster at full lock. I installed Convertibars at the same time and just adjusted them to suit.