Model 18 speedo

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
Rupert123
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Model 18 speedo

Post by Rupert123 »

I wonder can anyone help,
The first question is what speedo should be fitted to my machine, it is a 1954 18s, looking at the speedo fitted it is not original the speedometer also sticks at 20mph can anybody recommend a replacement. Second on the forum one of the members said it should be fitted to the fork crown on a touring bracket no
016945 these are not available through the club any more and will not be restocked ,could anybody email me a rough sketch so i can make one.

Thanks Martin.
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Rob Harknett
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Re: Model 18 speedo

Post by Rob Harknett »

http://www.ebay.co.uk/itm/Smiths-speedo ... xy9eVRLL~P
Bracket will look something like this.
http://archives.jampot.dk/technical/Spe ... 4-1958.pdf
correct speedo should be found listed here.
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Pharisee
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Re: Model 18 speedo

Post by Pharisee »

Rupert123 wrote:I wonder can anyone help,
The first question is what speedo should be fitted to my machine, it is a 1954 18s, looking at the speedo fitted it is not original the speedometer also sticks at 20mph can anybody recommend a replacement. Second on the forum one of the members said it should be fitted to the fork crown on a touring bracket no
016945 these are not available through the club any more and will not be restocked ,could anybody email me a rough sketch so i can make one.

Thanks Martin.

#016945 isn't available from AMOC Spares at the moment but I bought one a couple of weeks ago from Steve Surbey at AMC Classic Spares.
I'm from the Fens.... Gimme six.
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Pharisee
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Re: Model 18 speedo

Post by Pharisee »

Rob Harknett wrote:http://www.ebay.co.uk/itm/Smiths-speedo ... xy9eVRLL~P
Bracket will look something like this.
http://archives.jampot.dk/technical/Spe ... 4-1958.pdf
correct speedo should be found listed here.
Sorry, Rob.... The 016945 speedo bracket isn't anything like that. It's a simple, right angle bracket with three holes in it. It fits into the groove milled in the front of the top yoke.

Image
I'm from the Fens.... Gimme six.
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Rob Harknett
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Re: Model 18 speedo

Post by Rob Harknett »

Pharisee wrote:
Rob Harknett wrote:http://www.ebay.co.uk/itm/Smiths-speedo ... xy9eVRLL~P
Bracket will look something like this.
http://archives.jampot.dk/technical/Spe ... 4-1958.pdf
correct speedo should be found listed here.
Sorry, Rob.... The 016945 speedo bracket isn't anything like that. It's a simple, right angle bracket with three holes in it. It fits into the groove milled in the front of the top yoke.

Image
Ah, the type on e bay is like the early type introduced in 1938. Also similar to brackets on James 2 strokes that took a D shape speedo
Actually 016945 was updated circa 1960, to, quote spares list, use 023626, so that's an alternative pt. no. to look for.
Rupert123
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Location: BEDFORSHIRE UK

Re: Model 18 speedo

Post by Rupert123 »

Thanks for your help chaps,
The ebay bracket is the wrong one it is the L shaped bracket i require ,i shall probably have a go making it myself ,i think the one the club had for sale had a gusset on the 90 degree bend i shall make it from the photo you kindly uploaded, from the information i was sent the speedo i require is a smiths 480/3/L when i went on wee bay to have a look the price for one of these speedos is £200+ ,has any one tried these Indian replicas ,
or any other alternatives.

Thanks Martin.
Last edited by Rupert123 on Mon Aug 14, 2017 7:32 pm, edited 1 time in total.
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GOLDSTAR
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Re: Model 18 speedo

Post by GOLDSTAR »

make your bracket, they are easy enough I had to make mine, about the speedo, I don't know what one you have but Phil Woods in Sussex will recondition it for about £75, he is on the net. kind regards
shifter
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Re: Model 18 speedo

Post by shifter »

When my original model 20 speedometer bit the bullet quite a while ago and was beyond econonic repair i fitted an indian replica and its been working ok
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Rupert123
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Re: Model 18 speedo

Post by Rupert123 »

Thanks for the replies everyone,
The speedo on the bike not standard and not worth repairing , i will give one of these Indian replicas a try i have looked at original ones for sale and they going for money that i can justifying spending .

Kind regards,
Martin.
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Re: Model 18 speedo

Post by shifter »

Make sure you get the one with the same size to fit our cables and not the bigger Indian sort, also get a suitable length cable from the same seller as the chronometric cable square is bigger and will not fit the drive of the Indian speedo I think its 12mm not the 18mm fitting try this chap on the old eBay freeshipping-parts.
shifter
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