SOHC.co.uk Forums > CB500/550
550 F2 started!
K2-K6:
--- Quote from: Oddjob on December 17, 2022, 02:45:45 PM ---Already got the slave cylinder I'm planning on using. It's a lot smaller than that pictured and already satin black, also found a longer pushrod as well in case I need to extend the current one. All I need to figure out is how to mount the slave cylinder, the bike it comes off uses a thick metal bracket hiding under the sprocket cover, it's adapting that to fit the 500 that's proving a problem, saying that until I get the engine round to my garage I don't really know how I'll do it. It may turn out to be incredibly easy in the end. I haven't worked out whether to use the existing 500 sprocket cover or use the 550 one that doesn't have the clutch push rod mechanism in it. The problem with the 550 one is getting the hydraulic line in without cutting a hole in the cover.
--- End quote ---
I was thinking more along the lines of using a hope piston and seal kit only, then getting a simple cylinder turned out of billet alloy that would sit into the original Honda casting (where the clutch lifter sits) with the hose going out through the original cable hole. It would just be a concentric cylinder, maybe a tab to stop it turning, that would replace original cable lift mech and you wouldn't know it's there.
Oddjob:
You'd still have the problem of where the banjo hole would be, it needs to be behind the piston and that puts it either on the outside of the casing or a compromise somewhere on the inside. TBH until I try a test fit on a 500 sprocket carrier it's academic, it's all in my head ATM and like most of my ideas they constantly get updated and evolve. My idea at the moment is to either mount the slave on the steel plate it's originally mounted on and adapt the plate to fit OR it's mounted on the casing with the upper part visible and the line and banjo coming through the casing rather than running down the outside of the casing. My slave cylinder is very small, not a lot wider than the standard hole in the 500 casing.
Laverdaroo:
Keep going fella’s, I’m enjoying this……..
Sent from my iPhone using Tapatalk
K2-K6:
Interesting if you could fit a drop-in solution to convert that other's may find attractive too.
Hope items to be clear, I've used those as impetus as you can usually buy replacement piston and seal kits that could be useful and from 14mm up to about 25mm in different bore sizes that could impact design.
They use fluid entrypoint close to face of piston (brake pad location) with a diagonal drilling that passes to rear of a blind bore chamber rather than being restricted to entry at any particular point, this may facilitate hydraulic through original cable route with no modifications as they also go into the caliper with banjo or straight thread coupling. So it's the design detail that looks interesting.
Hope are recognised for the ease of spares supply and should make it easy to use any component if suitable.
Roo, we currently have a few different types on DH bikes, like these monobloc six titanium piston calipers
[ Guests cannot view attachments ]
[ Guests cannot view attachments ]
For those that haven't seen them, or their scale, they'll fit into the palm of your hand easily. Beautifully made and designed.
Oddjob:
Just a thought Roo but if you removed the lever arrangement inside the clutch cover of a 550 I wonder if you could fit a small hydraulic slave cylinder on the outside, the metal I think is thick enough to stand the pressure, so the little bar end thing goes inside the slave cylinder, like the end of the push rod did on the 500 and pushes straight down instead of the cranked arrangement it currently is. That's if you fancy an hydraulic clutch of course. The 550 isn't renowned for having a heavy clutch but the lighter the clutch action is the better as we get older. You'd need to leave the cable lever in place or fit a blanking plug.
I've got a spare lower part of the L/H switchgear which I've ground off the cable and lever bracket, so as to accommodate the clutch master cylinder, that's if I get solve the problem of course. The MC already has a mirror mount on it so that's another bonus as it sits the mirrors higher so you avoid the elbow view. Also has a starter switch. Both my MCs are apart ATM as they'll be ceramic coated in satin black. Hence why I bought spare sight windows, plus they are a matching pair so another bonus. I do have a spare clutch MC if you ever need one to match the brake MC.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version