jps
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| posted on 15/11/20 at 08:31 AM |
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Which flexi hose ends do I need
(I've already emailled Info@Furore and am waiting for a reply, but thought i'd ask on here if anyone could add anything...)
I've got one set of flexi-hoses, which came with the front Sierra calipers I bought. Both ends of this hose look like this, which I *think* is a
DIN male bulkhead fitting but can anyone confirm? If so - is this right to use into the caliper, and what's the right flare to connect this to a
kunifer line?
 DSCF0054[
/url] by [url=https://www.flickr.com/photos/24449711@N08/]johnpsanderson, on Flickr
 DSCF0052[
/url] by [url=https://www.flickr.com/photos/24449711@N08/]johnpsanderson, on Flickr
The length/clearances work well when I tried the hoses in the rear calipers, so I was going to buy a set the same again. Then I took out the OEM line
from a junk rear caliper I have, and the hose end is very different, pic here:
 DSCF0062[
/url] by [url=https://www.flickr.com/photos/24449711@N08/]johnpsanderson, on Flickr
Does anyone know what the OEM hose end is, so I can spec the same? Or can I just use the 'bulkhead' fitting - like the hose I already
have?
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Dingz
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| posted on 15/11/20 at 03:52 PM |
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It looks like you have a male type fitting on the front calipers but a female on the rear, the form machined in the rear caliper is called an inverted
flare I think. Effectively the two different ends you have would fit and seal together. You cannot put the front fitting into the rear, it will be a
male to male. Also there are DIN ends and SAE forms, best to wait for Furore, I'm sure they will know.
Phoned the local ramblers club today, but the bloke who answered just
went on and on.
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jps
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| posted on 15/11/20 at 03:58 PM |
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quote:
Originally posted by Dingz
It looks like you have a male type fitting on the front calipers but a female on the rear, the form machined in the rear caliper is called an inverted
flare I think. Effectively the two different ends you have would fit and seal together. You cannot put the front fitting into the rear, it will be a
male to male. Also there are DIN ends and SAE forms, best to wait for Furore, I'm sure they will know.
Thanks, interesting as the fitting inside the caliper itself looks the same on both the front and the rear caliper. They’re both convex, so I thought
it odd that the OEM hose in the rear caliper was convex as well...
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jps
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| posted on 16/11/20 at 07:30 AM |
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Sorry - the fitting in both calipers is **concave*** - it is like looking into a bowl. So I had expected both hoses to have a convex end - but the OEM
handbrake hose is concave also as the pictures above show...
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jps
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| posted on 16/11/20 at 07:30 AM |
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Sorry - the fitting in both calipers is **concave*** - it is like looking into a bowl. So I had expected both hoses to have a convex end - but the OEM
handbrake hose is concave also as the pictures above show...
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voucht
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| posted on 17/11/20 at 09:54 PM |
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Hi John,
The bulkhead fitting on the first picture looks to be M10x1.00 thread. It is the thread used all over the brake system on a Ford Sierra, so fat
chances that it is what you have.
First check if the diameter is exactly 10mm.
If it is 10mm, to check the pitch, count 10 threads, and measure the length of these 10 threads. If it is 10mm, it means that you have 1 thread every
each mm, then it is a M10x1.00. If 10 threads measure 15mm, then it is M10x1.5, and if 10 threads measure 12.5mm, then it is M12x1.25 (very popular on
Japanese motorbike brake lines)
So you'll need a M10x1.00 female on the kunifer pipe, with a concave seat you'll have to form with a flare tool. Also on the chassis side,
to hold the brake line, you'll need an M10x1.00 lock nut.
The second picture is nothing to worry about even though it looks different. It is actually a double seat (or double flare) male fitting. It feature
both convex (outer cone) and concave (inner cone) seat. It is very common, all the fitting manufacturers made at one point double seat fittings
because they can match both concave and convex seats on the opposite part. One fitting to fit 2 set ups, very clever! If you remember, all the brake
lines I was offering for the Haynes Roadster at the glorious time of the Haynes Forum were fitted with double seat fittings. Check this page from my
forgotten website, not active but still online :
https://sites.google.com/site/hydraulicforkitcars
/custom-brake-hoses/technical-details/fittings
(there is also a table on how to identify your thread, even though the best thing would be for you to get hold of a thread gauge)
So what is important is to identify the seat that is in the caliper. If the brake line you'll use has a double seat fitting like the one on the
picture, it is fine. If not, it will of course need to have the opposite seat of the calliper's seat.
Hope that will help 
https://vouchtroadster.blogspot.com/
https://cafrazx550.blogspot.com/
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jps
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| posted on 18/11/20 at 09:55 AM |
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quote:
Originally posted by voucht
Hi John,
The bulkhead fitting on the first picture looks to be M10x1.00 thread. It is the thread used all over the brake system on a Ford Sierra, so fat
chances that it is what you have.
First check if the diameter is exactly 10mm.
If it is 10mm, to check the pitch, count 10 threads, and measure the length of these 10 threads. If it is 10mm, it means that you have 1 thread every
each mm, then it is a M10x1.00. If 10 threads measure 15mm, then it is M10x1.5, and if 10 threads measure 12.5mm, then it is M12x1.25 (very popular on
Japanese motorbike brake lines)
So you'll need a M10x1.00 female on the kunifer pipe, with a concave seat you'll have to form with a flare tool. Also on the chassis side,
to hold the brake line, you'll need an M10x1.00 lock nut.
The second picture is nothing to worry about even though it looks different. It is actually a double seat (or double flare) male fitting. It feature
both convex (outer cone) and concave (inner cone) seat. It is very common, all the fitting manufacturers made at one point double seat fittings
because they can match both concave and convex seats on the opposite part. One fitting to fit 2 set ups, very clever! If you remember, all the brake
lines I was offering for the Haynes Roadster at the glorious time of the Haynes Forum were fitted with double seat fittings. Check this page from my
forgotten website, not active but still online :
https://sites.google.com/site/hydraulicforkitcars
/custom-brake-hoses/technical-details/fittings
(there is also a table on how to identify your thread, even though the best thing would be for you to get hold of a thread gauge)
So what is important is to identify the seat that is in the caliper. If the brake line you'll use has a double seat fitting like the one on the
picture, it is fine. If not, it will of course need to have the opposite seat of the calliper's seat.
Hope that will help
Thanks Sylvain - much appreciated as it makes it largely clearer to me. I'd not seen your site on hoses before - that's really helpful.
I'd also not come across 'double' seats - despite lots of Googling! If only you were still supplying hoses!
I'm still somewhat bemused by the fact that we use a 'DIN' male fitting, with an SAE female flare (i.e. where the hardline meets the
bulkhead connector) but will just bolt it all up on the basis it works for everyone else!
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