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4Gears4Tires
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Joined: October 08, 2018
Posts: 4379
Location: MD
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 Posted: Tue Jun 29, 2021 5:56 am Post subject: Re: brake line diagram? |
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IIRC it's 3/16"/4.75mm line with M10x1.0mm flares.
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'87 Syncro Ferric Oxyhydroxide Superleggera Edition
'85 Westy Sciuridae Domus Edition |
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epowell
Samba Member
Joined: September 23, 2015
Posts: 4733
Location: Czech (mostly) Vancouver (sometimes)
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| Posted: Tue Jun 29, 2021 7:19 am Post subject: Re: brake line diagram? |
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| 4Gears4Tires wrote: |
| IIRC it's 3/16"/4.75mm line with M10x1.0mm flares. |
THANKS!
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epowell
Samba Member
Joined: September 23, 2015
Posts: 4733
Location: Czech (mostly) Vancouver (sometimes)
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| Posted: Wed Jun 30, 2021 2:56 am Post subject: Re: brake line diagram? |
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| DanHoug wrote: |
| plain COPPER e.g. refrigeration/water line is absolutely the wrong thing to use as it can rupture under brake pressure. |
My parts guy says the copper/nickle stuff is not available. He can only get plain COPPER or the standard METAL lines.
His opinion is that the plain COPPER is fine. It is a bit more expensive but he says that with copper you can bend it by hand, whereas with the METAL cheaper lines you need a bending tool.
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DanHoug
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Joined: December 05, 2016
Posts: 5881
Location: Bemidji, MN
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| Posted: Wed Jun 30, 2021 3:58 am Post subject: Re: brake line diagram? |
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| epowell wrote: |
| DanHoug wrote: |
| plain COPPER e.g. refrigeration/water line is absolutely the wrong thing to use as it can rupture under brake pressure. |
My parts guy says the copper/nickle stuff is not available. He can only get plain COPPER or the standard METAL lines.
His opinion is that the plain COPPER is fine. It is a bit more expensive but he says that with copper you can bend it by hand, whereas with the METAL cheaper lines you need a bending tool. |
do NOT put copper on! you're in Vancouver currently, right? NAPA, Canada Tire, Amazon, just about any FLAPS has copper-nickel rolls available.
copper was used pre-WWII and worked for a while. until it didn't. today, pretty much all copper is smelted and rolled in China and does not have the quality of yester-years product.
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-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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epowell
Samba Member
Joined: September 23, 2015
Posts: 4733
Location: Czech (mostly) Vancouver (sometimes)
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| Posted: Wed Jun 30, 2021 4:30 am Post subject: Re: brake line diagram? |
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| DanHoug wrote: |
do NOT put copper on!
copper was used pre-WWII and worked for a while. until it didn't. today, pretty much all copper is smelted and rolled in China and does not have the quality of yester-years product. |
aha... OK
But plain copper is still OK for the clutch hydrolic line, no?
So the advantage of CUNIFER over steel is it is more flexible and more resistant to rust, correct?
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DanHoug
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Joined: December 05, 2016
Posts: 5881
Location: Bemidji, MN
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| Posted: Wed Jun 30, 2021 5:34 am Post subject: Re: brake line diagram? |
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| epowell wrote: |
| DanHoug wrote: |
do NOT put copper on!
copper was used pre-WWII and worked for a while. until it didn't. today, pretty much all copper is smelted and rolled in China and does not have the quality of yester-years product. |
aha... OK
But plain copper is still OK for the clutch hydrolic line, no?
So the advantage of CUNIFER over steel is it is more flexible and more resistant to rust, correct? |
copper is fine for the clutch line. far lower pressures. that said, 1/4" cunifer works really well also for the clutch and won't work harden and crack near to the degree copper will. but the consequence of a cracked clutch line is minor compared to a cracked brake line. on my clutch line, not having the flexible plastic line available to me, i made a compliance loop of cunifer to absorb engine rocking. had this been copper i might be less comfortable but again, the consequence is minor.
cunifer is wonderful to work with compared to steel. you can even easily make that little hardline loop for the front brake caliper.
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-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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epowell
Samba Member
Joined: September 23, 2015
Posts: 4733
Location: Czech (mostly) Vancouver (sometimes)
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| Posted: Wed Jun 30, 2021 6:06 am Post subject: Re: brake line diagram? |
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| DanHoug wrote: |
cunifer is wonderful to work with compared to steel. you can even easily make that little hardline loop for the front brake caliper. |
So CUNIFER is more rust resistant than steel... ?
And can you bend CUNIFER without special tools?
....looks like I need to get cunifer.
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DanHoug
Samba Member
Joined: December 05, 2016
Posts: 5881
Location: Bemidji, MN
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| Posted: Wed Jun 30, 2021 6:16 am Post subject: Re: brake line diagram? |
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| epowell wrote: |
| DanHoug wrote: |
cunifer is wonderful to work with compared to steel. you can even easily make that little hardline loop for the front brake caliper. |
So CUNIFER is more rust resistant than steel... ?
And can you bend CUNIFER without special tools?
....looks like I need to get cunifer. |
it is the magic of the copper, nickel, and iron formula that make it VERY corrosion resistant, strong, and yet easily formed. the cool thing is that you can bend it with your hands and it is very kink resistant. unlike steel, which relies solely on coatings to prevent corrosion, cunifer itself is resistant. more so than copper which can turn green and erode. great stuff.
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-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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epowell
Samba Member
Joined: September 23, 2015
Posts: 4733
Location: Czech (mostly) Vancouver (sometimes)
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| Posted: Wed Jun 30, 2021 6:18 am Post subject: Re: brake line diagram? |
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aha! Cunifer is even more rust resistant than copper?
And then painting it with something would make it last even longer.
So... you sold me  I'll definitely use cunifer.... thanks!
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