Author Topic: General Brake Advice Please  (Read 2766 times)

0 Members and 2 Guests are viewing this topic.

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 19,843
  • Saver of unloved motorcycles.
Re: General Brake Advice Please
« Reply #50 on: October 18, 2023, 08:58:03 AM »
 I have several running 750's (not all plated) and some stop amazingly quicker than others. If I was sure why, I'd post the recipe, but I don't think we have to accept that these bikes don't stop well because some do.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Rosinante

  • Hot Shot
  • ***
  • Posts: 359
  • All Generalizations are False
Re: General Brake Advice Please
« Reply #51 on: October 18, 2023, 05:25:48 PM »
... but I don't think we have to accept that these bikes don't stop well because some do.

My '75 did.
1978 CB750K

Offline Rosinante

  • Hot Shot
  • ***
  • Posts: 359
  • All Generalizations are False
Re: General Brake Advice Please
« Reply #52 on: October 18, 2023, 05:30:34 PM »
That hose looks perfect!

Yeah well....Old Bike Barn now says my order is cancelled because they don't have sufficient inventory.  So I came here to learn about how to measure, what to measure, how to describe end sizes and configurations and then I found this:

When I order from Apex I lay the old hose out on a sheet of scrap cardboard and mark the centre line on both ends and write the actual measurements. I send Raymond an email with a photo, plus photos of the fittings. He always gets it right! They also include the correct banjo bolts and washer. Great Service.

This looks like a very effective way for an idiot like me to get Raymond the information he needs.  Thank you!
1978 CB750K

Offline Kelly E

  • Geriatric Hooligan
  • Master
  • *****
  • Posts: 2,344
Re: General Brake Advice Please
« Reply #53 on: October 18, 2023, 05:36:27 PM »
I use a length of plastic airbag line and route it the way I want it then mark it for custom lengths. It flexes the same as SS brake line. I take it out and measure the length.
Never Give Up - Never Surrender

The Rust Bros. Garage Collection
1974 Honda CB 550 K0                                            1971 MGB/GT
1975 Honda CB 400F Super Sport                          1972 MGB/GT
1977 Kawasaki KZ 1000 LTD                                   1985 GMC S15
1978 Kawasaki KL 250
1980 Suzuki GS 1100E
1982 Honda CB 900F Super Sport
1983 Honda CB 1100F
1984 Honda VF 700S Sabre
1984 Honda VF 1000F Interceptor
1990 Moto Guzzi 1000 Le Mans
1994 Kawasaki Concours ZG 1000A9
2005 Harley Davidson Fat Boy

Online BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,862
  • 1969 cb750
Re: General Brake Advice Please
« Reply #54 on: October 18, 2023, 06:05:46 PM »
That hose looks perfect!

Yeah well....Old Bike Barn now says my order is cancelled because they don't have sufficient inventory.  So I came here to learn about how to measure, what to measure, how to describe end sizes and configurations and then I found this:

When I order from Apex I lay the old hose out on a sheet of scrap cardboard and mark the centre line on both ends and write the actual measurements. I send Raymond an email with a photo, plus photos of the fittings. He always gets it right! They also include the correct banjo bolts and washer. Great Service.

This looks like a very effective way for an idiot like me to get Raymond the information he needs.  Thank you!

You won’t be disappointed. Raymond is usually pretty quick too. Good luck!

Online BenelliSEI

  • Really Old Timer ...
  • *******
  • Posts: 9,862
  • 1969 cb750
Re: General Brake Advice Please
« Reply #55 on: October 18, 2023, 06:07:01 PM »
I use a length of plastic airbag line and route it the way I want it then mark it for custom lengths. It flexes the same as SS brake line. I take it out and measure the length.

Clever….I’ll try this when I measure up the Rickman.

Offline scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,269
  • Humboldt, AZ
Re: General Brake Advice Please
« Reply #56 on: October 18, 2023, 08:08:59 PM »
I use a length of plastic airbag line
What is airbag line?
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline Kelly E

  • Geriatric Hooligan
  • Master
  • *****
  • Posts: 2,344
Re: General Brake Advice Please
« Reply #57 on: October 18, 2023, 08:13:02 PM »
I use a length of plastic airbag line
What is airbag line?

It's leftover plastic high pressure air line used on the supply lines for the Firestone airbags on my truck. They can be pressurised to 100psi working pressure.
Never Give Up - Never Surrender

The Rust Bros. Garage Collection
1974 Honda CB 550 K0                                            1971 MGB/GT
1975 Honda CB 400F Super Sport                          1972 MGB/GT
1977 Kawasaki KZ 1000 LTD                                   1985 GMC S15
1978 Kawasaki KL 250
1980 Suzuki GS 1100E
1982 Honda CB 900F Super Sport
1983 Honda CB 1100F
1984 Honda VF 700S Sabre
1984 Honda VF 1000F Interceptor
1990 Moto Guzzi 1000 Le Mans
1994 Kawasaki Concours ZG 1000A9
2005 Harley Davidson Fat Boy

Online bryanj

  • Really Old Timer ...
  • *******
  • Posts: 13,974
  • CB500 Number 1000036
Re: General Brake Advice Please
« Reply #58 on: October 18, 2023, 11:55:23 PM »
Strimmer line would probably work just as well if you can straighten it!
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,274
  • Central Texas
Re: General Brake Advice Please
« Reply #59 on: October 19, 2023, 12:40:24 PM »
Strimmer line would probably work just as well if you can straighten it!

Or any electrical wire, that is what I have used.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 19,843
  • Saver of unloved motorcycles.
Re: General Brake Advice Please
« Reply #60 on: October 19, 2023, 01:30:23 PM »
 I just pumped a master cylinder apart with a grease gun, one turn on the thread does it. It's a little gooey but way better than driving it out with a drift pin and less chance of damaging it too.
 I won an auction for a set of brand X snap ring tools that had two of the same one so I ground the arms on one of them to fit in the master cylinder. I did get this one out unbroken. 
« Last Edit: October 19, 2023, 10:16:00 PM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,269
  • Humboldt, AZ
Re: General Brake Advice Please
« Reply #61 on: October 19, 2023, 09:09:55 PM »
... but I don't think we have to accept that these bikes don't stop well because some do.

My '75 did.
There is a friction coefficient rating for brake pad compounds. It's a two letter code, with the first letter representing the cold performance, and the second letter representing the hot performance. The lower in the alphabet the letter, the less "grip" the pads have, ranging from E to H. It looks like EBC FA13V pads with a GG rating are the best they have to offer for your caliper, but double-check the fitment.
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline Deltarider

  • Really Old Timer ...
  • *******
  • Posts: 8,121
  • ... but some animals are more equal than others.
Re: General Brake Advice Please
« Reply #62 on: October 20, 2023, 02:28:50 AM »
That ^ is useful info; at least I didn't know that. I still have a set of EBC FA13 pads lying around. I found them rather primitive. They sqealed like hell and I haven't used them for long. They also wore unevenly to a degree I'm not used to (see pic). The difference in width (FA13 set), from front to the rear side is 1,3mm. Don't know what to think of that.
If you want to use them, the general advice was IIRC to remove the black paint from the side, to make them fit better and to chamfer (if that's the word) them somewhat.
CB500K2-ED Excel black
"There is enough for everyone's need but not enough for anybody's greed."

Offline rotortiller

  • Expert
  • ****
  • Posts: 843
Re: General Brake Advice Please
« Reply #63 on: March 20, 2024, 05:06:34 AM »
Old post I know. I just did another master cylinder swap out with the stock factory POS. This time I used an old Ninja EX master (mid 90s and later) found on Kawasaki single disc EX 250s and 500s and many more models made by Nissin. It's 1/2" bore and usually sells used for 30 bucks or so. So far it's the best I have found having good travel, feel and most important is improved braking distance. Some 1/2" masters can lack piston travel and pull close to the bars, but not this one. Highly recommended. About 1.2" piston pivot fulcrum with a long hand lever, just what the ancient tank needs to make an old feller happy.

« Last Edit: March 20, 2024, 09:34:13 AM by rotortiller »

Offline HondaMan

  • Someone took this pic of me before I became a
  • Really Old Timer ...
  • *******
  • Posts: 13,802
  • ...not my choice, I was nicknamed...
    • Getting 'em Back on the Road
Re: General Brake Advice Please
« Reply #64 on: March 21, 2024, 09:01:14 PM »
Old post I know. I just did another master cylinder swap out with the stock factory POS. This time I used an old Ninja EX master (mid 90s and later) found on Kawasaki single disc EX 250s and 500s and many more models made by Nissin. It's 1/2" bore and usually sells used for 30 bucks or so. So far it's the best I have found having good travel, feel and most important is improved braking distance. Some 1/2" masters can lack piston travel and pull close to the bars, but not this one. Highly recommended. About 1.2" piston pivot fulcrum with a long hand lever, just what the ancient tank needs to make an old feller happy.



Good stuff to know, since lately we are having a bad time trying to get pucks that grip well with the pressures of the OEM masters. Even the "strongest rated" of the EBC pucks have less-than-OEM braking grip today. Ugly problem... :(
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com