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Smiths Grey Faced Speedo Head
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Sponge
Lancashire (A chip shop somewhere near Preston)
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November 14, 2020 - 12:42 pm
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Advise needed guys please. I am reactivating my old D10A and have got to the bit where I have tested the speedo head. Electric drill method. I ca vouch that this speedo was working fine when I packed it away 45 years ago but now it doesn't do a thing. Just sits there grinning at me. The speedo drive cable is fine etc. So my question is ....is this normal and do they loose their magnetism over the years ?? Or am I just being stupid as usual ?

Sponge

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not henpecked
Near J 11 of M42
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November 14, 2020 - 1:15 pm
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Hi Sponge

Without as they say, "Trying to teach my grandmother how to suck eggs" is the drill bit going in the right direction? Easy mistake - I know I've done it!

Also, great to hear you got your engine sprocket off without damaging the main shaft.

B175, on the road. Honda XBR 500, and ....... Suzuki Burgman 200 scoot! Nicknamed "The hair dryer" - by me I hasten to add; & great storage under the seat when you get to your destination.

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Sponge
Lancashire (A chip shop somewhere near Preston)
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November 14, 2020 - 6:26 pm
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T

not henpecked said
Hi Sponge

Without as they say, "Trying to teach my grandmother how to suck eggs" is the drill bit going in the right direction? Easy mistake - I know I've done it!

Also, great to hear you got your engine sprocket off without damaging the main shaft.  

Tried both directions. No difference just nothing at all.  Tried out an old C25 speedo which also does nothing .  Wizzed up the speedo on the B175 and it works fine ........ perhaps the spiders have got to it.

Unless anybody has any other ideas it looks as though they have lost their mojo in storage ( dry plastic bagz, silica gel etc etc) ....... that engine sprocket was a pain. Also crankcase screws. I can see traces of lubricant on most screws but the 4 that have refused to budge look as though they have been assembled dry. Hence being a likely to budge as a frenchman living next door to a brothel. I am slowly working my way through with a stud extractor.

Did they move Bantam engine production to Small Heath from Redditch in 1967...?  if so I reckon I have got a Monday Morning engine here guys. 

Moral of the story. Dont store speedos and always lubricate screw threads on assembly. You never know when you might need to split your crankcases. Sponge moan over.

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