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Author Topic: 75 CB360 - bad omen "yatagarasu" build  (Read 24142 times)

Offline crazypj

  • Posts: 13155
  • Split personality, I fake being smart
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #60 on: Jan 20, 2018, 22:04:30 »
There's a strong argument for keeping the center stand brackets.  You can slide the pin out and remove the center stand for riding, then put it back in when you need to service the bike.  I kept mine.

+1
I've removed the brackets and regretted it later (actually not too much later, about 3~4 days into build but 3~4 months after chopping them off)

what size tire? I was able to get about 1mm clearance with a 130 tire on the 360 with stock rear rim.
Not going to do that, 110 rear I think with a 2.15 rim. Not sure yet

You really need minimum of 3" rim with a 130 tyre (WM 5 I think?)
I'm using a WM3 with a 4.50 trail tyre but it's a 'narrow' 4.50 at just over 4.25" fitted
« Last Edit: Jan 20, 2018, 22:12:36 by crazypj »
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline MiniatureNinja

  • Posts: 454
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #61 on: Jan 20, 2018, 22:35:05 »


here's what I did to center stand mount. removed stop and cut down to be less noticeable



and the "complete" waiting for rear hoop (also still need to chop stock rear tank mount off
'75 Honda CB360 - thread

Offline MiniatureNinja

  • Posts: 454
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #62 on: Jan 23, 2018, 15:07:18 »
Yep but I'm really slow 6weeks to 3 monts turn around(too much other stuff going on plus (gasp) I'm getting older
You need to drill the 'extra' holes in rotor so they 'overlap' slightly, that way pads stay flat and rotor stays 'clean'

shop is quoting me $280 to do valve job and install bronze guides then charge me $51 each for 35mm intakes and $37 each for stock type (but stainless swirl polished) exhaust valves

shaping up to be an expensive endevour but I'm determined to make this bike what it should be

gotta find that drill pattern I had to get the other holes into the rotor
'75 Honda CB360 - thread

Offline crazypj

  • Posts: 13155
  • Split personality, I fake being smart
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #63 on: Jan 23, 2018, 22:28:56 »
You already have the radial lines on rotor from use, use them for the various hole pattern. All you need  is to make sure there is 'overlap' so entire surface  has a hole' It keeps pads 'flat' as they wear in. At present you would have ridges where the holes are
I can't remember how to link directly to a post but hopefully this should get you tyere. http://www.dotheton.com/forum/index.php?topic=11736.450.
Go to post 475
« Last Edit: Jan 23, 2018, 22:31:13 by crazypj »
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline MiniatureNinja

  • Posts: 454
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #64 on: Jan 24, 2018, 00:13:27 »
You already have the radial lines on rotor from use, use them for the various hole pattern. All you need  is to make sure there is 'overlap' so entire surface  has a hole' It keeps pads 'flat' as they wear in. At present you would have ridges where the holes are
I can't remember how to link directly to a post but hopefully this should get you tyere. http://www.dotheton.com/forum/index.php?topic=11736.450.
Go to post 475

good point, I think I will probably  do two larger holes spaced evenly in the areas were there are gaps
'75 Honda CB360 - thread

Offline crazypj

  • Posts: 13155
  • Split personality, I fake being smart
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #65 on: Jan 24, 2018, 11:47:24 »
That actually works well and could be 'different' enough if substantially larger (1/2" compared to 1/4") You don't need as many oversize holes and balance can be a problem if your not careful with spacing. I would probably do 4~5 (or more) depending on the hole pattern you already have
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline MiniatureNinja

  • Posts: 454
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #66 on: Jan 24, 2018, 13:55:49 »
That actually works well and could be 'different' enough if substantially larger (1/2" compared to 1/4") You don't need as many oversize holes and balance can be a problem if your not careful with spacing. I would probably do 4~5 (or more) depending on the hole pattern you already have

I plan to balance the rotor when I am done, as well as slim it down to min spec - I am not 100% convinced it's not a bad idea, but 1mm of stainless has got to weigh a lot. your pictures also gave me more inspiration for drilling the area in the "hub" part of the rotor. I do have 2 spare rotors both NOS and so if I "ruin" this one with my hacking and drilling it's not that big of a deal. same with the sprocket cover I am drilling up and rear brake "thingy" I really want to give a nod to the "speedholers" that drilled every little ounce they could at the sacrifice of safety to go that much faster, without being unsafe - i want it to look that way
'75 Honda CB360 - thread

Offline crazypj

  • Posts: 13155
  • Split personality, I fake being smart
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #67 on: Jan 24, 2018, 17:37:32 »
I did a dual disc conversion on my XS 650 several years ago. XS disks are known to be stupid heavy but I didn't have means to thin them at the time.  ( glad I didn't as tey are quite soft stainless, noticeable wear after 12,000 miles)
I did a pattern on 1/2" holes which got rid of about 2lbs just in the rotors. Fitted Suzuki 4 piston calipers as tey are lighter than original Yamaha plus it kinda 'standardised' my brake pad stock (fitted Katana front end on 360 plus have a Katana to play with)
With the brake pedal, it has spot welds holding two halves where it fits splined shaft if I remember right? I would have the top and bottom welded (actually I would just weld it up myself,  but ,you need a welder for that  ;) )
« Last Edit: Jan 24, 2018, 17:40:28 by crazypj »
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline MiniatureNinja

  • Posts: 454
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #68 on: Jan 30, 2018, 21:46:13 »
I did a dual disc conversion on my XS 650 several years ago. XS disks are known to be stupid heavy but I didn't have means to thin them at the time.  ( glad I didn't as tey are quite soft stainless, noticeable wear after 12,000 miles)
I did a pattern on 1/2" holes which got rid of about 2lbs just in the rotors. Fitted Suzuki 4 piston calipers as tey are lighter than original Yamaha plus it kinda 'standardised' my brake pad stock (fitted Katana front end on 360 plus have a Katana to play with)
With the brake pedal, it has spot welds holding two halves where it fits splined shaft if I remember right? I would have the top and bottom welded (actually I would just weld it up myself,  but ,you need a welder for that  ;) )

I almost was gonna do a dual disc on this bike, have 550 forks and all the stuff to do it but I realized how much weight that would add and decided against it. I may throw it on a CB350 project that isn't focused on weight savings
'75 Honda CB360 - thread

Offline irk miller

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Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #69 on: Jan 30, 2018, 21:58:14 »
Don't do it.  There isn't enough bike.  I built the rotors to go to dual disc, installed them both, then pulled one off.  You definitely don't need the unsprung weight.