Post by: Oddjob on March 16, 2023, 07:33:55 PM
So I spotted this pattern on ebay for cast discs and thought it looked ok. What do you think? Sent it to the fella who's doing the job and he reckoned he'd need another box of 5mm holes ;D ;D ;D
(https://i.postimg.cc/QC2C0TD8/s-l500.jpg) (https://postimg.cc/ZvLJq002)
Post by: Johnwebley on March 16, 2023, 07:45:41 PM
My thought are there are to many holes,
It will reduce the friction area of pad/disc,
Could increase the lever pressure needed to stop,
I would also slot the outer holes, so in the wet the water will centrifuge out
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Post by: Oddjob on March 16, 2023, 07:57:21 PM
Still plenty of metal left for pad contact I'd have thought John, plus I'm adding a second disc so there should be a big improvement over the standard one.
Not a great lover of drillings which have just a few holes and getting stainless discs slotted isn't easy to source, been looking for a while now. Thought I'd found someone until I mentioned they were stainless and they said no.
Post by: Sesman on March 16, 2023, 08:13:31 PM
I have no idea if this is wrong or right…but it works.
As for weight saving…forget it. It just doesn’t make a meaningful performance difference.
Post by: Sesman on March 16, 2023, 08:18:04 PM
Post by: K2-K6 on March 16, 2023, 08:18:20 PM
Take the point John makes about slots taking water to the edge. Years ago we slotted quite a few, mostly rear on 750 F1 and Kawasaki as they came in, gave better initial response and clear grit from making score lines in disc. That was either with a bull nosed slot mill (U shape into disc face) to leave sharp edges to clean the pads. A friend still has his one on rear of F2 we did, three slots on each side. Can also use a roller mill with narrow "trench" cutter, again with rounded profile to make exactly the same U profile.
Slotting is still used on some motorsport applications, especially rally as it does keep the pads and surface from getting so influenced by gravel etc.
Can't see a problem with 5mm holes, much larger they "sizzle" as you lightly apply them, even then they work well.
Post by: Sesman on March 16, 2023, 08:19:46 PM
Post by: K2-K6 on March 16, 2023, 08:26:41 PM
Post by: Sesman on March 16, 2023, 08:27:52 PM
Post by: Laverdaroo on March 16, 2023, 08:37:48 PM
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Post by: Sesman on March 16, 2023, 09:10:18 PM
How’s it hanging Roo. Any closer to a fix or taking a break?
Post by: Laverdaroo on March 16, 2023, 09:31:58 PM
I used reference points drawn on a roll of masking tape to get the correct radius and be able to replicate it easily. Just strip off tape until you get the curve where you want it, pair of compass’s a fat coffee and Planet Rock on the radio and yer away.
Can’t physically do much this week after treatment number 1 for a full removal of my teeth which is coming up it’s been nil by mouth as I’m in so much pain! Had to halt proceedings a bit and hoping to get back on it at the weekend.
Still out here in the Shed of Dreams tidying for summut to do as I can’t sit still but not feeling like concentrating on anything cos I’ll probs bugger it up or forget something!
Never had tooth, head and jaw ache this bad in my life, if I had a gun I’d have bloody shot me self
Cams in, chain on just the sprocket to bob on and then try to run with the kickstart to ascertain what’s going down with the idler gear. I want to see if it’s spinning when the motor is running. If it is then it’s surgery time
, if it isn’t, the bloody thing’s off back together as I reckon the starter motor issue is sorted.Got my dates today for impending Les Dawson impressions of the 28tj April but have to have another 5 tungsten pegs putin first to hold the other metal work they want to put I when I surgery for the removal.
God, I’m not looking forward to this!(https://uploads.tapatalk-cdn.com/20230316/f903175fbe95304a8c3a47804c704398.jpg)
Mine are better, so nuuuur!
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Post by: Sesman on March 16, 2023, 09:36:47 PM
Post by: Sesman on March 16, 2023, 09:44:03 PM
Post by: Laverdaroo on March 16, 2023, 09:51:39 PM
But you get my drift? Bet you were chuckling into yer malt looking for that?
Never been so petrified of anything in my life tbh, proper sh$%ing my pants!
Knowing my luck, I’ll be able to scratch me forehead with me chin!
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Post by: Sesman on March 16, 2023, 09:56:54 PM
And an actually yes. Currently tugging on triple Jamesons Black Barrel….very nice.
Post by: Laverdaroo on March 16, 2023, 10:00:56 PM
I have no doubt but it’s the run up that’s doin me in
Plus, living off chocolate milk is loosing its naughty appeal and getting a bit dull!
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Post by: Johnny4428 on March 16, 2023, 10:11:30 PM
Good luck.
Post by: Laverdaroo on March 16, 2023, 10:56:20 PM
Been waiting on NHS but then Covid and then a move and it’s got to the stage where enough’s enough, just coughed up £8K to get the lot out. Set of new fangs and all that for three months then a perm set of dentures after……yay!
The NHS wouldn’t help me in any way getting some new gnasher’s, of any description although if I wanted a tattoo removed because it might make me sad and it effect my mental health then they’ll fall over backwards to throw money at you. Covid kinda stuffed it up as not working for it all and self employed meant it’s taken me about 4 years to save up for the torture
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Post by: Nurse Julie on March 16, 2023, 11:26:26 PM
Post by: Sesman on March 17, 2023, 07:23:20 AM
Post by: Johnny4428 on March 17, 2023, 07:47:10 AM
Get loads of ice lollies in Roo, they will become your best friend. Even better, get the LHG to make you some Gin and Tonic lollies, I heard from patients in the past they work better than any Morphine based analgesics.😂😂 I like that! “You been on the lollies again Roo?” 🤪🤪😵💫😵💫
Post by: Laverdaroo on March 17, 2023, 08:28:56 AM
Do they do a CBD oil one,they seem to do everything with it in at the min, I could get hammered whilst having a lolly
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Post by: Laverdaroo on March 17, 2023, 08:29:49 AM
Get loads of ice lollies in Roo, they will become your best friend. Even better, get the LHG to make you some Gin and Tonic lollies, I heard from patients in the past they work better than any Morphine based analgesics.Kinda like that idea Julie
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Post by: K2-K6 on March 17, 2023, 08:47:16 AM
Do they do a CBD oil one,they seem to do everything with it in at the min, I could get hammered whilst having a lolly
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Oh, I thought the lollie was to keep the cobalt drill cool in stainless ;D
Post by: taysidedragon on March 17, 2023, 12:47:31 PM
See you next Tuesday !!!
But you get my drift? Bet you were chuckling into yer malt looking for that?
Never been so petrified of anything in my life tbh, proper sh$%ing my pants!
Knowing my luck, I’ll be able to scratch me forehead with me chin!
Sent from my iPhone using Tapatalk
You'll be fine Roo. Just grit your teeth....
I'll get my coat! 🤣
Post by: Laverdaroo on March 17, 2023, 01:55:08 PM
Do they do a CBD oil one,they seem to do everything with it in at the min, I could get hammered whilst having a lolly
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Oh, I thought the lollie was to keep the cobalt drill cool in stainless ;D
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Post by: Laverdaroo on March 17, 2023, 01:55:46 PM
Spit of tea, you swineSee you next Tuesday !!!
But you get my drift? Bet you were chuckling into yer malt looking for that?
Never been so petrified of anything in my life tbh, proper sh$%ing my pants!
Knowing my luck, I’ll be able to scratch me forehead with me chin!
Sent from my iPhone using Tapatalk
You'll be fine Roo. Just grit your teeth....
I'll get my coat!
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Post by: taysidedragon on March 17, 2023, 02:01:57 PM
Spit of tea, you swineSee you next Tuesday !!!
But you get my drift? Bet you were chuckling into yer malt looking for that?
Never been so petrified of anything in my life tbh, proper sh$%ing my pants!
Knowing my luck, I’ll be able to scratch me forehead with me chin!
Sent from my iPhone using Tapatalk
You'll be fine Roo. Just grit your teeth....
I'll get my coat!
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Sorry. Couldn't help myself. I hope it goes well.
We'll all be pissed on cocktail lollies this weekend! 🤪
Post by: Laverdaroo on March 17, 2023, 04:54:46 PM
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Post by: Nurse Julie on March 17, 2023, 05:10:04 PM
I’m doing some tonightEven if they don't freeze fully, it will end up like that SlushPuppy drink stuff 😁😁😁😁
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Post by: Oddjob on March 17, 2023, 05:22:15 PM
Post by: K2-K6 on March 17, 2023, 05:40:45 PM
Wasn't you was it Roo ?
Post by: Nurse Julie on March 17, 2023, 05:41:47 PM
I was under the impression that spirits don't freeze, it's how you get really powerful Vodka in Russia, you leave it out in cold weather and the water in the Vodka freezes, you skim it off until it stops freezing and you have almost pure alcohol.You just need to get the ratio correct for it to freeze.
Gin and Tonic Popsicles
Makes 10, 75 mL popsicles
185 mL gin
500 mL tonic (fresh or flat)
Juice of 1 lime
Combine all ingredients in a pitcher and pour into popsicle molds. Let freeze for about 2 hours. Insert popsicle sticks and continue freezing for at least 12 hours.
Post by: K2-K6 on March 17, 2023, 06:44:45 PM
I was under the impression that spirits don't freeze, it's how you get really powerful Vodka in Russia, you leave it out in cold weather and the water in the Vodka freezes, you skim it off until it stops freezing and you have almost pure alcohol.You just need to get the ratio correct for it to freeze.
Gin and Tonic Popsicles
Makes 10, 75 mL popsicles
185 mL gin
500 mL tonic (fresh or flat)
Juice of 1 lime
Combine all ingredients in a pitcher and pour into popsicle molds. Let freeze for about 2 hours. Insert popsicle sticks and continue freezing for at least 12 hours.
Sounds like an expert approach to me. All back to Julie's for the alcoholic lollies then ;D
Post by: Bryanj on March 17, 2023, 06:47:47 PM
Post by: Nurse Julie on March 17, 2023, 06:48:09 PM
Post by: Sesman on March 17, 2023, 09:53:09 PM
Post by: Laverdaroo on March 17, 2023, 10:04:11 PM
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Post by: Sesman on March 17, 2023, 10:07:32 PM
Post by: Sesman on March 17, 2023, 10:14:17 PM
Post by: Laverdaroo on March 17, 2023, 10:15:28 PM
Intravenous….?
I could put it into my insulin pump ;D
Post by: Laverdaroo on March 17, 2023, 10:16:27 PM
Hey, get some BBC four into your life…Phil Lynott is on. Saw them on the Red Flag tour in Newcastle in 1979…brilliant.
4 or 4 Extra?
nice one Phil.... ;)
Post by: Sesman on March 17, 2023, 10:23:29 PM
Post by: Laverdaroo on March 17, 2023, 10:26:13 PM
Post by: Oddjob on April 05, 2023, 08:13:04 PM
So the person I asked says they have to remove the rotor inner and then they grind the discs flat, they send the inner part off to be resprayed and then reattach using bolts rather than rivets, cost is £75 per disc including the painting, so not cheap but pics of others he's done look like it's a very good job.
He can also drill them, although he doesn't drill the holes but uses a laser cutter to do it, I suppose so long as the pattern is symmetric it's a better job than drilling. He's also offered to design a completely new design, I could for instance have them cut with the word HONDA cut into them, some of the pics he's send me look really unusual, I am however rather taken with an odd design that may look really stunning on the 500, it's not drilled but it has what are essentially large slots cut out of the disc, a bit like modern wavey discs.
Cost to do skimming, repainting and the cutting/drilling depending on your choice is £145 a disc, not so bad if you still only have a single disc fitted but getting a little expensive when you have twin discs like mine. I was going to have the centres powder or ceramic coated after the drilling I was planning before so if you factor in the cost of that and the postage to and from Scotland it's getting closer to the cost. The new place isn't that far from me. The difference is the new design would be totally unique on such an old bike, not a big fan of the standard look, it's fine don't get me wrong, I just like mine to be a little different to everyone elses. The plus side to this is I have 2 spare discs, both have surface damage due to rust and bad storage so I'll use those which are sort of scrap and if the result isn't to my liking I'll just fit the standard discs which were on it before and sell on the altered ones.
Here's what I'm thinking of, I'd just go for the outer part, the internal small blocks might be a bit OTT. I'm also thinking of doing the cuts in the outer part as well, that will really alter the look of a standard disc.
(https://i.postimg.cc/bJYX6PjT/unnamed.jpg) (https://postimg.cc/2qtX6Pyb)
Just for a laugh, here's one he did for another customer. Really impressive job.
(https://i.postimg.cc/pVZQbHMj/unnamed-1.jpg) (https://postimg.cc/t7snW8TR)
Post by: Multiman on April 05, 2023, 08:56:50 PM
Would they not cheese grate your brake pads at an accelerated rate?
I've no idea, just askin.
Post by: McCabe-Thiele (Ted) on April 05, 2023, 09:26:40 PM
I said to the tester are you sure they are cracked - yes he said in three places! I then said well that's odd as the cracks are symmetrically spaced on either side with an offset between the inside & outside I think they are made that way. They had a sort of spring steel arrangement in a sandwich not a solid single disc.
He ended up ringing the Yamaha Dealer in Ilkeston before he would issue a certificate.
Post by: Oddjob on April 05, 2023, 10:33:37 PM
Wow they look spectacular.
Would they not cheese grate your brake pads at an accelerated rate?
I've no idea, just askin.
Modern discs seem to be very similar in design these days, so I'd imagine they'd wear about the same, maybe a little faster, I'm going with SBS ceramic pads this time around and I find them almost dust free and very good grip with prolonged life.
These are my new Galfer wavey discs as fitted to my 1300, not that dissimilar.
(https://i.postimg.cc/SsQpVv2c/IMG-3095.jpg) (https://postimg.cc/mcnqgVSr)
Post by: Multiman on April 06, 2023, 12:45:33 AM
Post by: K2-K6 on April 06, 2023, 10:14:48 AM
You can get away with far more adventurous design with longer pads, 4 pot for example, than single piston type circular pad contact.
They are just more stable when transiting the gap in the design. The good calipers have pad lengths extended quite a way to facilitate this on these design, running a some six pots that you can keep pad stable over most disc type, the pistons are smaller on leading edge to keep wear even though in relation to the largest trailing piston. They are roughly 3 to 4 times longer than width for pads though.
Too much gap with smaller round pads starts to give indication with noise, referenced as "turkey gobble" as it does make that sound especially when squeezing hard and with the pad/disc up to temperature.
We use Galfer too in a similar arrangement particularly for high mud environments as they tend to wipe the pads with wavy edge and slots etc. Some type are much more cut away which id not use in high heat applications.
For durability, and especially with small round pads, I'd stick to circular holes in pattern of choice. They don't present aggressive edges to the pad in rotation, keep the pad stable with these Honda swing/singoe type caliper, and won't likely change pad wear .
Post by: Oddjob on April 06, 2023, 10:17:38 AM
Post by: K2-K6 on April 06, 2023, 11:52:52 AM
Its a bit like the leading edge of a drum shoe that effectively gives it a servo type mechanical pull, also tries to pull the piston skew in the bore, especially as that comes out further when pad wears.
I've never worried about pad wear in use, that's if the brake does what I want it to do. Or the noise (just that some are obsessed with brake noise and complaining of that ) you'd usually get a sizzling as light contact but that goes away with more pressure, gobble seems to be present when higher pressure meets low supporting structure and gives indication of just how much the pad material is dropping into these gaps.
Be interesting to see wherever you end up, and if in use experience follows any of this.
Post by: Oddjob on April 06, 2023, 12:28:34 PM
I'm thinking of altering the way the back pad fits into the carrier as well, was never a big fan of such a small split pin holding in the pad, especially as the holding ridge of the carrier is so small, I was thinking of changing the split pin for a screw, drilling the pad where the split pin goes through and threading a 5mm thread into there, seem to recall there's another Honda which uses that type of arrangement.