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1928 Model 18 oil pump

Submitted by philip_ham on Monday, 10 June, 2019 - 12:53
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I need some help please.  I've just taken ownership of a 1928 Model 18, in original condition and am re-commissioning it ready for the road i.e. new tyres / tubes and brake linings.  But the oil pump drips and I would like to identify the make and model of the pump so that I can hopefully source some spares.

Hopefully the attached photo shows the pump for someone to identify.

Whilst checking the Amal carb I found the float chamber was full (seized float) of white crystals, which I've managed to clean out, but I need a new filter for the bottom of the float chamber; does anyone know if these are available?

Thanks, Phil.

Attachments
Oil pump 1928.jpg

Submitted by ian_richtsteig on Monday, 10 June, 2019 - 14:40

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It's a Best and Lloyd Mechanical Mark II and looks like it has a  plunger fitted to show the oil is circulating.  

Same as my 1928 Model 18. Can attach catalogue drawings if they will assist. 

Ian

i was reading a thread as I am trying to manufacture a magneto sprocket to drive a B&L oil pump, do you have some drawings of the pump perhaps ? I would appreciate it if you could help.

Submitted by alan_elstob on Monday, 10 June, 2019 - 20:13

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These are currently being remade - see www.vintage-replica.cz - and individual parts can also be bought.

Rgds

Alan

Submitted by philip_ham on Tuesday, 11 June, 2019 - 00:17

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Alan,

That's wonderful news that parts are still being made and a good selection of parts for the older machines.  I'll dismantle mine and see what bits I need.

Thanks, Phil.

Submitted by ian_richtsteig on Friday, 11 February, 2022 - 07:11

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Hi Nigel,

It's not the magneto sprocket which drives the oil pump but the nut screwed on to the end of the exhaust cam. The nut is slotted to take the rectangular drive shaft of the pump.

A couple of photos from the parts book and sales catalogue attached. If you enlarge the parts page you can just make out the slot on the nut.

Attachments
IMG20220211110333.jpg
IMG20220211110041.jpg

Submitted by philip_ham on Tuesday, 4 February, 2025 - 22:54

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Has anyone made and precise dimensioned drawings for the Best and Lloyd Mk 2 oil pump?
My pump has cracked where the feed pipeline union screws into the Mazak body, so I'm considering getting one made.  To do this I need an engineering drawing that has accurate dimensions, especially for the axes of the drilling or boring positions.

I can draw this accurately, but need these crucial dimensions for the driving worm to engage perfectly with the driven gear.  My son has 3D scanned the pump body and priced up for 3D printing in aluminium, but this works out the same cost as the complete new pump from the Czech Republic i.e. £400.

If I can get this drawing into CAD format then it would be possible to get one or more made using CNC machinery.

Attachments
Oil pump crack (1).JPG

Submitted by philip_ham on Wednesday, 5 February, 2025 - 09:43

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Stephen,
That's very useful and will save a lot of time.
Did you buy your replacement before we left the EU?  I may have to consider import taxes, or is it tariffs!

Yes I bought mine before the disaster of Brexit but the charges are just part of our lives now. 
The company themselves are brilliant to deal with and used to come to Stafford shows in the past. 

Submitted by philip_ham on Saturday, 8 February, 2025 - 20:32

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The pump body has been ordered and is on it's way.  The total cost of pump body and new pipework connections, including Paypal charge for payment and post is £165.  At least I can get my Model 18 running again.
I still think it's a good idea to capture any technical information for important parts in case they have to be made, especially as the market shrinks as owners stop riding and wearing their bikes out!
 

 



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