Reproduction master cylinder reservoir

[ViperRon]

I think it could be a good Idea to do them and sell them if the price can be controlled. I had often thought that if someone had access to one of the CNC machines that you program to cut out parts you could do a great job. It may be worth contacting a vendor that sells plastic to find out what they recommend to hold up to chemicals. On the aluminum ones it would be nice to find a sight glass that could be installed then give where and how to the buyer on purchase and installation to keep the price down. I'd definitely be interested in the reservoir for the front brakes as mine is not in the best of shape. It is a want not a need but I am sure the day of need fast approaches.

[motoman]

I think it could be a good Idea to do them and sell them if the price can be controlled. I had often thought that if someone had access to one of the CNC machines that you program to cut out parts you could do a great job. It may be worth contacting a vendor that sells plastic to find out what they recommend to hold up to chemicals. On the aluminum ones it would be nice to find a sight glass that could be installed then give where and how to the buyer on purchase and installation to keep the price down. I'd definitely be interested in the reservoir for the front brakes as mine is not in the best of shape. It is a want not a need but I am sure the day of need fast approaches.

It would have to be the UHMW variety, same as used on chain guides, etc. Machinable and normally comes in 4'x8' sheets from 1/4" to 8" thicknesses. It IS impervious to fuel, oils, and brake fluid.

[3Phase]

Is the material used in 3D printers brake fluid proof? It'd be totally cool if you could Scan and Print the stupid things and skip the machining.

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[Joe Bartelt]

I think most 3D printers use abs plastic which would probably hold up to the brake fluid. But I have yet to see a 3d printed sample that would be smooth enough for an o-ring to seal to. I contacted the vender that I usually get plastics from and the process engineer I talked to seemed to think the UHMW would work good. He also suggested acrylic polycarbonate. The acrylic polycarbonate would definitely look cool, it's almost as clear as glass. But it's kind of brittle.

[ViperRon]

The other issue with the reservoir on the handlebar is Sun and how well it holds up to exposure to sun rays. I am pretty sure it may have just as much effect as chemicals.

[3Phase]

The other issue with the reservoir on the handlebar is Sun and how well it holds up to exposure to sun rays. I am pretty sure it may have just as much effect as chemicals.

ABS doesn't do well with brake fluid but there are a lot of materials you can use with a 3D printer to make things like, oh, I don't know, a functioning human skull?


Doctors Replace an Entire Woman’s Skull By a 3D Print


"Look, ma! A new helmet!"

Okay, that finish doesn't look like an o-ring would have too much trouble sealing against it and hopefully the UV resistance is totally irrelevant in that one woman's example but if you can print out a skull for a living person you can print out a brake fluid reservoir!

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[IanDMacDonald]

My co-worker said an chemical-resistant PVC, or PPS would work better in said application. However, not cheap. UHMW is far cheaper, but may not hold-up to the pressures over a long period of time.

[ViperRon]

Ian I may not have understood what you said well but I do not think there is normally much pressure in the reservoir as it mainly just supplies fluid. It does have to have a tight seal.

[IanDMacDonald]

Ian I may not have understood what you said well but I do not think there is normally much pressure in the reservoir as it mainly just supplies fluid. It does have to have a tight seal.

No, you understood me right Ron, I was just wrong in-assuming there was any type of built-up pressure within the MC.

[BowlingSS]

Just a FYI.
I bought a new brake reservoir for a 1973 Honda CB750 off of Ebay that came from China for like $30. It worked great.

Bill

[mikubuilder]

I planned on doing a standard aluminum one about 2 years ago, but never finished...I have a CAD model somewhere on my work comp...my thought was that if I do it in aluminum, I will never have to worry about it falling apart, like my stocker.

[TopCatGr58]

Just a FYI.
I bought a new brake reservoir for a 1973 Honda CB750 off of Ebay that came from China for like $30. It worked great.

Bill

Hey Bill,

Are you saying that it fit on your XS11's brake assembly just right?? Could you post some photos of it installed for the masses?

T.C.

[motoman]

Like I stated, UHMWis easiest for machining, and have had replacement pieces machined that were under way more serious pressures and chemical contact than majority here will ever see or encounter.

[Joe Bartelt]

ABS doesn't do well with brake fluid but there are a lot of materials you can use with a 3D printer to make things like, oh, I don't know, a functioning human skull?


Doctors Replace an Entire Woman’s Skull By a 3D Print


"Look, ma! A new helmet!"

Okay, that finish doesn't look like an o-ring would have too much trouble sealing against it and hopefully the UV resistance is totally irrelevant in that one woman's example but if you can print out a skull for a living person you can print out a brake fluid reservoir!

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Not saying it can't be printed, just saying a print of that quality would be cost prohibitive.

The skull replacement was most likely done using laser stereo lithography. That's by fare the highest resolution process available, but also the most expensive. The layered ABS prints are allot cheaper but even the highest resolution layered prints can only achieve a 150ra or worse surface finish. I've had a number of prototypes 3d printed for customer prototypes over the last few years, one was a laser tag gun shell prototype that was done out of abs using the layered technique on a top of the line 3d printer and the other was a cheese cutter handle about the size of a gulf ball. The STL print looked virtually perfect but even though it was only 1/8th the size of the laser take gun shell, it cost almost the same amount of money. About $350.00.

[3Phase]

Thanks, Joe! I honestly had no idea it cost so much to do 3D in cruddy plastic!

I can see post-finishing a less-than-perfect finish to handle an o-ring but if ABS is all they can work with then it's a no-go, brake fluid will mess it up before UV has a chance to get started.

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