Post by: amx1992 on May 07, 2023, 04:00:48 PM
[attachimg=1] [attachimg=3]
https://www.youtube.com/watch?v=6wG73rUkYMs&t=79s
Also, one of the baskets I took apart was identical to the other 400 baskets, but had different cush rubbers ( a better design I think) and a very slightly different gear (1mm smaller holes for the rubbers). Just wondered if anyone knows anything about this, maybe from a cb350?
[attachimg=2]
Post by: Oddjob on May 07, 2023, 04:25:16 PM
Post by: amx1992 on May 07, 2023, 05:44:48 PM
Post by: Laverdaroo on May 08, 2023, 03:08:42 PM
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Post by: Johnny4428 on May 08, 2023, 03:24:03 PM
Post by: McCabe-Thiele (Ted) on May 08, 2023, 03:53:53 PM
Post by: Oddjob on May 08, 2023, 04:14:50 PM
I've got a few spare baskets for the 500/550, they differ slightly in that the 500 has either one tooth more on the gear or one tooth less, can't remember now, plus the actual basket is different, I'd imagine however the damping rubbers will be the same, I'll split one and see if they are similar to the 400, how big are the rubbers BTW? just so when I find out I can compare them.
Have you tested the new clutch basket yet and if so is it standing up to the demands? Might be a bit early to tell but initial thoughts?
Post by: amx1992 on May 08, 2023, 09:11:23 PM
Post by: Oddjob on May 08, 2023, 10:44:40 PM
Post by: amx1992 on May 08, 2023, 10:52:06 PM
Post by: Oddjob on May 08, 2023, 10:54:08 PM
Post by: McCabe-Thiele (Ted) on May 08, 2023, 11:07:30 PM
Post by: Oddjob on May 08, 2023, 11:13:31 PM
Post by: amx1992 on May 08, 2023, 11:19:29 PM
Wouldn't that distort the central cut though Max?
I had to compensate that as well so that when it squashed the central cut was the exact shape of the part on the basket
Seems weird that no one seems to be making a pattern copy part for the likes of DS.
I think if someone was waterjet cutting them or had a tool to stamp them out, I'm sure you could get the price down to about £10 per set in material, problem is you would need to make a lot of them, and small amounts of viton is pretty expensive, and not easy to get hold of
Post by: Laverda Dave on May 09, 2023, 08:54:46 PM
Cheers
Dave
Post by: Oddjob on May 09, 2023, 09:21:10 PM
Post by: amx1992 on May 09, 2023, 10:20:39 PM
Max, what size of Vinton sheet would you need to make a few sets of these? I am asking because my brother in law owns a rubber company and he uses viton.
Cheers
Dave
30mm square and 10mm thick would be enough for the 400 clutches, not sure about the other SOHCs
Post by: Laverdaroo on May 10, 2023, 11:23:46 AM
Post by: Sesman on May 10, 2023, 11:38:47 AM
Post by: Oddjob on May 10, 2023, 04:55:31 PM
Post by: Laverdaroo on May 10, 2023, 06:24:11 PM
But yeah, typical Phil.
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Post by: Sesman on May 10, 2023, 09:07:55 PM
Post by: Laverdaroo on May 10, 2023, 09:33:53 PM
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Post by: Matt_Harrington on May 11, 2023, 07:29:10 AM
Stop ‘ribbing’ me. I’m very sensitive…..
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Post by: Laverda Dave on May 11, 2023, 02:25:23 PM
He's back next week so I'll call him then and let you know. I could have texted him with the question but in line with the recent posts on the subject I need to practice safe text!
Post by: Oddjob on June 03, 2023, 05:27:20 PM
A few questions if I can. I drilled the head off the rivet from the back, this allowed the metal plate to come off and that allowed the gear ring to be removed. I fully expected that what was left of the rivets would just knock through but they appear to be really well stuck in there. Was that the same with the 400? and if so what worked best for you.
The cush rubbers are not the same as the 400, similar but a different internal shape.
(https://i.postimg.cc/nhnTm1Nt/IMG-3254.jpg) (https://postimg.cc/WhfML029)
(https://i.postimg.cc/tJPD3vX9/IMG-3255.jpg) (https://postimg.cc/5Q4w13Yr)
You reckon you could make some to suit? I want about 5 sets if you can.
Post by: amx1992 on June 04, 2023, 11:36:02 AM
Those rubbers look like they couldn't be made manually because of the funny shape, id say the best way would be laser or waterjet cut from a sheet. They do look a lot more like the modern clutch basket rubber shape Honda uses, maybe something already available might fit them?
https://www.denniswinter.com/off-road-c1/parts-c91/clutch-parts-c240/clutch-cushions-rubbers-c559
Post by: Oddjob on June 04, 2023, 02:04:15 PM
Post by: Laverda Dave on June 04, 2023, 08:39:55 PM
Post by: Oddjob on June 04, 2023, 08:47:22 PM
Removed the rivets from both clutch baskets, some needed drilling right through at 3mm and some just popped out after the basket was left in the sun for a few hours. Some need a lot of heat, all out now though and no damage done. Tapped one basket out to take 6mm screws, cleaned up both baskets, ring gears and plates, even cleaned the bronze bearing inside the basket. Looking really nice now. Ordered a countersink tool so I can countersink the metal plate to take the countersunk 6mm screws I'll be using.
I may have found a local company to do some waterjet cutting, will see how much they'll charge. Just need to source some 10mm Viton and I'll give it a go. The rubbers appear to be 28mm circular. Which may be ideal as my hole cutter set has a 28mm hole cutter in it.
Post by: amx1992 on June 04, 2023, 08:54:08 PM
https://www.coruba.co.uk/black-high-temperature-fkm-rubber-sheeting-75-shore/
Post by: Oddjob on June 04, 2023, 09:15:26 PM
I've found some in China but it's £267 for a 500mm x 500mm sheet, far more than I would need.
Post by: amx1992 on June 04, 2023, 11:24:55 PM
Post by: Oddjob on June 12, 2023, 01:53:54 PM
Post by: Oddjob on June 12, 2023, 02:16:07 PM
I'll have to see about opening a CB500K clutch basket and seeing if they are the same as the CB550F, I'd imagine so but it's best to check beforehand.
Just done some quick calculations, a 1000 x 1200mm sheet of 10mm Viton is around £900. That would produce approx 1470 of the small discs, depending on wastage etc so say 1400. That approx 233 sets of damping rubbers, which makes each set cost approx £4, so it depends on how much it costs to cut the dammed things. Correct me if my maths is wrong.
Post by: amx1992 on June 12, 2023, 06:20:14 PM
Post by: Laverda Dave on July 06, 2023, 03:46:49 PM
Apologies this has taken so long but I forgot to give my BIL a call when he returnd from Holiday!
My BIL’s company is called Delta Rubber and is located in Christchurch, Dorset.
I called him earlier today to see if he had any 10mm sheet. The thickest size he has is 8mm but he can potentially get some 10mm sheet but it will depend on how much you need (I know it is not going to be a huge amount).
He asked if you can send one of your existing new cush rubbers to him he can then match up the density and go from there.
His details are:
Martin Bailey
Delta Rubber Limited
Unit 21, Priory Industrial Park,
Airspeed Road
Christchurch, Dorset
BH23 4HD
Telephone: 01425 278 011
Martin works Monday to Thursday.
Give him a call, he’s very helpful and knows his products.
PS - I hope he can provide what you need as I am going to need a set of these rubbers for the 400/4 I am buying to restore :D
Post by: Oddjob on July 06, 2023, 03:53:27 PM
No news from my water jet person, I've sent him another email to remind him.
Post by: Matt_Harrington on July 06, 2023, 04:43:58 PM
Post by: Rozabikes Tim on July 06, 2023, 05:06:09 PM
Post by: Laverda Dave on July 06, 2023, 08:18:46 PM
Does he cut rubber as well Dave or just provide sheets?
No news from my water jet person, I've sent him another email to remind him.
He does cut rubber Ken but not on a water jet or laser cutter, he has a very high tec cutting machine. Apparently you shouldn't cut the modern rubber products on a laser cutter due to the very toxic fumes it gives off.
Post by: Oddjob on July 07, 2023, 12:38:16 AM
Post by: Laverda Dave on July 07, 2023, 06:20:06 PM
Post by: Oddjob on July 07, 2023, 06:26:05 PM
I can get the 10mm Viton if he's struggling.