Honda-SOHC

SOHC.co.uk Forums => CB750 => Topic started by: Arch stanton on May 25, 2018, 10:29:46 PM

Title: Thread pitch?
Post by: Arch stanton on May 25, 2018, 10:29:46 PM: Can anyone tell me the thread size & pitch in the hole where the brake pipe enters the Caliper on a Cb750f1?
As the threads on the Caliper I have is a bit festered & needs cleaning out.
Sean.
Title: Re: Thread pitch?
Post by: Rob62 on May 25, 2018, 10:41:23 PM: I’m not sure what pitch it is but i know its the same size as a std banjo bolt if that helps...
Title: Re: Thread pitch?
Post by: Arch stanton on May 26, 2018, 12:03:25 AM: It's a start.
Cheers Rob.
Title: Re: Thread pitch?
Post by: gtmdriver on June 04, 2018, 08:57:41 PM: I think early Honda brake fittings are M10 x 1.25mm pitch.
Title: Re: Thread pitch?
Post by: Arch stanton on June 04, 2018, 11:32:18 PM: Cheers.
I was thinking they may have used something odd
Similar to yamaha on the RD's.
Sean.
Title: Re: Thread pitch?
Post by: Underdog1 on June 04, 2018, 11:42:06 PM: Quote from: Rob62 on May 25, 2018, 10:41:23 PM
I’m not sure what pitch it is but i know its the same size as a std banjo bolt if that helps...

It it simple to get braided brake hoses made up to go straight into the caliper without using the standard metal pipe bit?
Title: Re: Thread pitch?
Post by: taysidedragon on June 04, 2018, 11:50:15 PM: Quote from: Underdog1 on June 04, 2018, 11:42:06 PM
Quote from: Rob62 on May 25, 2018, 10:41:23 PM
I’m not sure what pitch it is but i know its the same size as a std banjo bolt if that helps...

It it simple to get braided brake hoses made up to go straight into the caliper without using the standard metal pipe bit?

Yep. I've got HEL braided hoses on mine. Any of the other manufacturers will supply the hoses.
Title: Re: Thread pitch?
Post by: Underdog1 on June 05, 2018, 11:02:31 AM: Quote from: taysidedragon on June 04, 2018, 11:50:15 PM
Quote from: Underdog1 on June 04, 2018, 11:42:06 PM
Quote from: Rob62 on May 25, 2018, 10:41:23 PM
I’m not sure what pitch it is but i know its the same size as a std banjo bolt if that helps...

It it simple to get braided brake hoses made up to go straight into the caliper without using the standard metal pipe bit?

Yep. I've got HEL braided hoses on mine. Any of the other manufacturers will supply the hoses.

Nice, i always thought these kits were a direct replacement for the standard hoses i.e. would need the rigid line still.
Title: Re: Thread pitch?
Post by: Spitfire on June 05, 2018, 11:40:18 AM: Here's mine with HEL line going straight to the caliper, I preferred it that way.
(https://imageshack.com/a/img921/995/k8K2ws.jpg)

Dennis
Title: Re: Thread pitch?
Post by: Simon46 on June 05, 2018, 11:54:47 AM: That hose looks tidy. And so is the shine on that metal!
Title: Re: Thread pitch?
Post by: Arch stanton on June 05, 2018, 05:01:33 PM: That is exactly what I'm trying to achieve. Only on double disc set up.
I'm really don't like the hoses going round the outside of the forks.
Thanks for posting.
Regards.
Sean.
Title: Re: Thread pitch?
Post by: gtmdriver on June 06, 2018, 02:21:04 PM: Quote from: Underdog1 on June 04, 2018, 11:42:06 PM
Quote from: Rob62 on May 25, 2018, 10:41:23 PM
I’m not sure what pitch it is but i know its the same size as a std banjo bolt if that helps...

It it simple to get braided brake hoses made up to go straight into the caliper without using the standard metal pipe bit?

I've done exactly that too.

A single hose that goes from the brake light switch union to the caliper with an angled male fitting at the caliper end.
Title: Re: Thread pitch?
Post by: Simon46 on June 06, 2018, 06:14:20 PM: I now need one. My 78 one piece hose ordered from cmsl showing 3 in stock is now no stock so money refunded. Where did you get yours?
Title: Re: Thread pitch?
Post by: gtmdriver on June 06, 2018, 08:47:54 PM: https://furoreproducts.co.uk/
Title: Re: Thread pitch?
Post by: Simon46 on June 07, 2018, 03:29:35 PM: Thanks gtmdriver. Have emailed him with a link to your bike pic. Internal diameter of banjo 10mm and 10x1.25 for the thread with vernier calipers. Regards Simon
Title: Re: Thread pitch?
Post by: Simon46 on June 07, 2018, 06:11:29 PM: Also the slave cylinder pipe end fit's into master when reversed if that helps anyone
Title: Re: Thread pitch?
Post by: gtmdriver on June 07, 2018, 07:53:35 PM: Furore cars will need the dimensions.

I have the schematics and if you PM me with your email I will send them over to you.
Title: Re: Thread pitch?
Post by: Underdog1 on June 07, 2018, 10:32:25 PM: Quote from: gtmdriver on June 07, 2018, 07:53:35 PM
Furore cars will need the dimensions.

I have the schematics and if you PM me with your email I will send them over to you.
Are you able to post them up on here?
Title: Re: Thread pitch?
Post by: gtmdriver on June 08, 2018, 02:46:05 PM: Yes if you insist :-)

These are for a Honda CB350F. You will need to check the lengths against your own bike.

Upper Hose
(http://i41.photobucket.com/albums/e254/gtmdriver/upper%20brake%20hose_zpsd5ay5bsm.jpg) (http://s41.photobucket.com/user/gtmdriver/media/upper%20brake%20hose_zpsd5ay5bsm.jpg.html)

Lower Hose
(http://i41.photobucket.com/albums/e254/gtmdriver/lower%20brake%20hose_zpsnxhoqcat.jpg) (http://s41.photobucket.com/user/gtmdriver/media/lower%20brake%20hose_zpsnxhoqcat.jpg.html)

The second schematic shows the dimensions for a direct replacement but the best option is the alternative hose shown in the lower part of the diagram. It lines up nicely with all the original hose carriers.
Title: Re: Thread pitch?
Post by: Simon46 on June 09, 2018, 12:03:47 PM: With my 78 USA one piece hose I get 102 cm from centre of banjo to steel pipe end. Furore making it up in black at 103cm to be on the safe side.
Title: Re: Thread pitch?
Post by: Underdog1 on June 11, 2018, 05:52:45 PM: Quote from: Simon46 on June 09, 2018, 12:03:47 PM
With my 78 USA one piece hose I get 102 cm from centre of banjo to steel pipe end. Furore making it up in black at 103cm to be on the safe side.

So a one piece doesn’t use the brake switch? Or does the me 78 have it built into the lever assembly or something
Title: Re: Thread pitch?
Post by: Simon46 on June 11, 2018, 11:15:23 PM: Mines a 78 USA import. One hose and brake switch in lever