A nice straight forward job!


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Sidcar
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A nice straight forward job!

Postby Sidcar » Thu Nov 20, 2014 4:17 am



Yesterday I set out to change my rear tyre, brake pads and hoses. Straight forward! Huh. The bike now looks like an exploded diagram and I ended up sawing through the brake pipe from the m/cylinder to the first hose as the union nut only undid about a turn snd a half before seizing solid.
Weather prediction for today, sunshine with a blue haze over my workshop.

Sid
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Sidcar
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Re: A nice straight forward job!

Postby Sidcar » Thu Nov 20, 2014 4:22 am

Why is the picture upside down?
For the benefit of Redial.

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bustedwing
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Re: A nice straight forward job!

Postby bustedwing » Thu Nov 20, 2014 9:10 am

Maybe if you shake it the bad parts will fall out? :D
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themainviking
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Re: A nice straight forward job!

Postby themainviking » Thu Nov 20, 2014 10:06 am

I was gonna be a smart azzz about British people working on mechanical things, but I think you are in enough pain already.
It ain't about the destination - it's all about the journey

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wing rider 2012
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Re: A nice straight forward job!

Postby wing rider 2012 » Thu Nov 20, 2014 11:37 am

Don't you just love those straight forward jobs. 1 hour job turns into a 1 week repair.
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Mh434
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Re: A nice straight forward job!

Postby Mh434 » Thu Nov 20, 2014 4:27 pm

Murphy is my co-pilot. There ARE no straightforward jobs!

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waituntilthebeep
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Re: A nice straight forward job!

Postby waituntilthebeep » Fri Nov 21, 2014 12:43 am

Holy crap and it turned the shop upside down. Everything on that bike... minus changing the blinker fluid, requires a minimum of 22 pieces to be removed.

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Sidcar
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Re: A nice straight forward job!

Postby Sidcar » Fri Nov 21, 2014 5:05 am

The real problem has been changing the frame to swinging arm brake hose. Not only is it right little sod to get at, the battery and the control unit had to come out, but whoever tightened the pipe union nuts into the hose used so much force it expanded the ends of the nuts so it was impossible, after the first half turn, to unscrew them. Hence I had to saw through the pipe from the m/cyl to the hose then unbolt the hose bracket and pull the hose and rear pipe out together.
I'm fitting Hel brake lines and EBC sintered pads. The Hel lines look the biz, a quality product, but I still had a couple of problems.
The wing brake pipe ends are double flared, convcave, so I expected the new lines to be single flared, convex, to match them but no, Hel lines are also double flared. When I rang Hel a very helpful man told me all Hel lines are double flared, it being expedient to stock just one type of end rather than two. He also said they've never had a problem with this set up but if I wasn't happy just return them for a full refund. In the end it didn't matter as I had to make up new brake pipes anyway so I made them with single flared ends.
The other problem is the unions on my lovely new, red of course, brake lines are smaller then the original so the support brackets are now way to big. The wrap round brackets I padded out with rubber strips but the bracket to the frame which the hose should push through and be secured with a "hairpin" clip wasn't so easy. Eventually I welded a washer with a smaller diameter hole to the bracket and used a compression clip, of a Ford I think, to pull it tight when the nut was tightened. See pictures, hopefully the right way up but in this case it doesn't really matter.
As well as all this, because I've read a lot about the frailty of Honda alternator bearings, I took the alternator off and checked mine. I pleased, relieved and, after all the above, not a little surprised to find the bearings are fined.
Today's job? Put it all back together and, the best part, road test it.

Sid
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themainviking
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Re: A nice straight forward job!

Postby themainviking » Fri Nov 21, 2014 7:46 am

Good job Sidcar.....
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bustedwing
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Re: A nice straight forward job!

Postby bustedwing » Fri Nov 21, 2014 9:22 am

I'm a little worried about that single flare holding up to the pressure after some time. I hope that it works out for you.
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waituntilthebeep
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Re: A nice straight forward job!

Postby waituntilthebeep » Fri Nov 21, 2014 3:59 pm

Is that steel or copper line? If it's copper, I am not sure that it will hold up to the pressure. In the pic I can't tell if it's anodized steel or copper... yellowish color. I think a single flair will hold up but not nearly as good as a double. I have done some single flairs in the past (n my own car ony of course, used double on everything else) and not had an issue.

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Sidcar
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Re: A nice straight forward job!

Postby Sidcar » Fri Nov 21, 2014 7:04 pm

The pipe is a copper alloy designed for the job and is the replacement pipe of choice over here, it being easy to work with and doesn't corrode, corrosion being the main reason your changing the pipe in the first place.
Obviously there's a difference of opinion here but what can be more effective than a single flair mating to a double. A single flair is the most common pipe end on European cars. Where two metal pipes meet one will have a single flair and a male union, the other a double flair and a female union. Can't see how you can better that. Put two double flair joints together, how much contact area is there? not a lot. Put a single and a double together and you've got about 2 mm ring of contact area. Without lowering the tone of the post it's a male to female joint what could be more natural.
Generally here if a pipe has a double flair it's fitted to a brake hose.
It was dark and chucking it down with rain when I finally got the bike back together so the road test will be tomorrow. With new pads on old discs there'll be a bit of bedding in to do.

Sid

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redial
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Re: A nice straight forward job!

Postby redial » Sat Nov 22, 2014 2:49 am

Why is the picture upside down?
For the benefit of Redial.


Well it did save me having to turn the computer screen, as I normally have to do with the rest of the posts :roll:


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