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Lubrication matters

Submitted by john_pullen-appleby on Sat, 30/12/2017
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Light Twins

Hello All,

I have asked variantions on these questions before I realise but. I have a filter plate (bought at an autojumble but by the looks of it the same as the one on the spares site). It has 10mm spigots and while I have extracted these from similar plates on other bikes (as most British bike oil pipe is 5/16 ID) thess kook like permenant fixtures.

I am thinking of sleeving the stub taking oil back to the tank and the pipe from the engine to 10mm to get round this. I have done it beore on a Triumph with a Mogo rotary pup and all seems OK.

Has anyone done this on a lightweight?

Some one has been kind enough to send me a link to a firm selling long handled tapes--I can get these in 8 or 10 mmm OD and was thinking of leaving the feed iose 8mm 5/16 ( if you so this these are parts of the system that have to remain the old size). The feed strainer that screww in the tank has a bulge in it making loctiting reamed coiooper pip over the existing pipe more difficult.

Feked, the supplier of the tap mention people riging up an ignition cutout--has anyone done this? I did the same on a BSA B40 25 years ago but was able to get micro switches from work then.

Any advice greatefully received

Cheers

JPA

Submitted by dan_field on Sat, 30/12/2017

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Not sure what you mean by âfilter plateâ but I havenât ever had a problem with wet sumping on a lightweight.

Dan

Submitted by john_pullen-appleby on Sat, 30/12/2017

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Previously Dan Field wrote:

Not sure what you mean by âfilter plateâ but I havenât ever had a problem with wet sumping on a lightweight.

Dan

Hello Dan,

What I mean by a filterplate--the alloy housing a car type spin on filter screws on to. It has stubs in and out.

Cheers

JPA

Submitted by dan_field on Sun, 31/12/2017

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Ah, now I understand, I have a filter on my jubilee, mounted behind the centre frame section above the centre stand, I didnât measure the pipe diameter, but found a length that fitted both ends and jubilee clipped it up, job done!

Submitted by john_pullen-appleby on Sun, 31/12/2017

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Previously Dan Field wrote:

Ah, now I understand, I have a filter on my jubilee, mounted behind the centre frame section above the centre stand, I didnât measure the pipe diameter, but found a length that fitted both ends and jubilee clipped it up, job done!

You were lucky there Dan,

I have one of these on each of my Triumphs and I believe they werea 2cv part orignally. They both have (had in one case) 10mm OD stubs whereas 5/16s (8mm is the norm with British bikes some have a larger feed than a return some BSA singles for example.

I extracted the stubs from one filter plate but these look like permenant fixtures. I only ask as I do not know much about Norton oil pumps--the other bikes bar the BSA have Morgo pumps and capacity to spare.

Submitted by john_pullen-appleby on Sat, 06/01/2018

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Previously Dan Field wrote:

Hi John, Itâs fitted on the return, so donât see a problem?

There probably is not one--I just wondered if anyone else had encountered it--most filter plates have different size stubs that most british bike engines' oil pipes--something usually has to be changed--on previous ones I have been able to remove the stubs and fit corrctly sized ones--this on has stubs that seem cast in. In some, usually hydralic, appications pipe size matters--but, as brit bike return side pumps are essentially pumping bubbles under relatively high pressure it probably does not not matter much.

Cheers

JPA

Submitted by paul_standeven on Sat, 06/01/2018

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I fitted a filter plate to my Dominator, mounted behind the gearbox. I used a tatty original pipe assembly and cut the crimp fittings off the return feed, so that I could have the pipe unions and nuts. Rubber hose simply went straight onto the fittings and I fitted hose clamps. At a later point I may get it properly crimped so that it is permanent

With such a small motor, you don't need to have the huge capacity of the full-size filter. There may be a smaller oil filter arrangement which would be more compact, and have the 8mm hose fittings you would prefer

Paul

 


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