Author Topic: Plunger filter hose routes  (Read 792 times)

Offline GoldenFailure

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Plunger filter hose routes
« on: 18.01. 2012 20:20 »
Hi. I know the oil filter thing has come up a lot on here, I think I've read all the posts now about them, but haven't been able to find a clear suggestion of how to route the oil hose on a plunger A10. Im putting the filter (2cv cartridge type) behind the gearbox, so the hose to the filter is easy, but the hose back to the tank has to make a sharp U bend to meet the rocker pipe/tank junction, or have miles of hose to lessen the angle. I don't have any copper tube or any way to bend it if I had it. Any suggestions? Is anyone running this setup who could post a clear picture?

Also, the copper pipe to the rockers is bent and hammered looking, do I have to buy fittings, brazing gear and pipe and learn to braze or is there an easier way to replace this?

Any advice appreciated.
1955 Plunger Golden Flash (doesn't work)
1967-2005  Enfield Bullet bitsa (evil)
Absence of common sense or car to go with it.

Online RichardL

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Re: Plunger filter hose routes
« Reply #1 on: 18.01. 2012 23:09 »
First, I'll be dam*ed if I'm going to address you as "GoldenFailure". It's too much to type. What's the name, or would you prefer to go by just "Failure" *smile* ;)

Well, you should learn to braze in any case. However, if you are anywhere near Aberystwyth, walk on over to SRM Engineering and you'll be at the largest single specialist in A7's and A10's on the planet. srmclassicbikes.com  

As for copper tube, it's easy to get and easy to bend with the help of a cheap tool sold at your local hardware store (at least in the U.S.). Fittings are another issue. I would tell you to talk to SRM about the hose/pipe to the oil filter, but they don't really endorse oil filters. Obvioulsy, someone more local to you would be better help in locating suppliers, but there are these:

http://www.draganfly.co.uk
http://www.cakestreetclassics.co.uk
http://www.canddautos.co.uk
http://www.Leighclassics.com


Richard L.
 
Plan on signing up for the world-wide 2020 DISTINGUISHED GENTLEMAN'S RIDEon September 27, 2020. This year it's a solo or pillion ride in dapper attire. Watch website at https://www.gentlemansride.com for details.


Online orabanda

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Re: Plunger filter hose routes
« Reply #2 on: 19.01. 2012 04:08 »
I have installed the filter in the tool box of plunger and rigid bikes.



I make the filter head to suit a standard (and compact) Ryco spin-on filter.

Then I use Swagelock stainless steel compression fittings, and 8mm stainless tubing, to solid plumb the filter to two Swagelock bulkhead fittings fitted in the lower front face of the tool box.

The toolbox was painted AFTER mounting the filter, and drilling holes for the bulkhead.



I use hoses from swinging arm A10's, and shorten them. I machine aluminium ferrules and re-crimp them on the shortened hose.

I also make an extended hose end out of 8mm tube for the top fitting, machine barbs on the tube, and custom bend (to clear oil tank filter) before crimping on the shortened hose (as per the second last photo; Gavin's bike).



To get the filtered oil back into the oil tank, I machine a replacement fitting which screws into the tank. It must have a 30 degree taper, to seal on the banjo for the rocker oil bleed, and 1/4" BSP thread (with internal 30 degree tapered seat for the hose end to seal on). Then I pass the hose behind and around the frame down tube, across the top of the gearbox, and using a 90 degree bend from the standard A10 hose, onto the fitting.

Some of the pics show 45 degree 1/4" bsp elbows welded into the toolbox. this was my first layout; latest arrangements use the swagelock bulkheads. The lower bulkhead requires the internal taper to be machined to match the taper in the 1/4" BSP hose end.



This is the filter fitted to Josh's bike



Here is a filter for Gavin's bike, being temporarily set up on one of mine.

I also have an arrangement for the swing arm bikes, but's that's another story!



Richard

Offline GoldenFailure

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Re: Plunger filter hose routes
« Reply #3 on: 19.01. 2012 12:28 »
Hi Richard. Yep Failure will do, but Ed also works! Thanks for the links, I'll bear them in mind.

Orabanda. Gulp. Thanks for that incredibly detailed post, much appreciated, and definitely the solution I'd wish for, but I don't have the skills, parts, cash or knowledge to pull that off. Any simpler/cheaper suggestions?

Thanks guys.
1955 Plunger Golden Flash (doesn't work)
1967-2005  Enfield Bullet bitsa (evil)
Absence of common sense or car to go with it.