Author Topic: Zeroing Smith Speedo ?.  (Read 1803 times)

Offline Josh Cox

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Zeroing Smith Speedo ?.
« on: 01.11. 2009 11:33 »
Hi,

Am nearing the end of my restoration of my 1953 Golden Flash Plunger.

When I purchased the bike it had a generic magnetic type speedo, which probably didn't work.

After much searching I now have two smiths genuine speedos, one for my nacelle plunger frame ( rear reset ) and one for the plate mounted side reset, like a gold star, not for my bike.

How do I reset the numbers to 00000, is it as simple as lifting the little tabs and rolling the number back to zero ?, or do I need to align barrels and then lift tabs and roll to zero ?.

How does the 0-9 digit, when it reaches 9, dial over the tens digit to 1 ?.

Good luck working out what the hell I'm talking about, I think I've just confused myself.
Black 1953 Golden Flash Plunger

Offline muskrat

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Re: Zeroing Smith Speedo ?.
« Reply #1 on: 01.11. 2009 12:45 »
G'day Josh,
               I did mine (rear reset) about 25 years ago, can't remember exactly how but think it was your first method. You know of course it's illegal to do that over here, LOL.
Cheers
'51 A7 plunger, '57 A7SS now A10CR, '76 XT500, '77 AG175 '83 CB1100F, '81 CB900F project.
Australia
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Online orabanda

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Re: Zeroing Smith Speedo ?.
« Reply #2 on: 01.11. 2009 12:52 »
Illegal is a sick bird

Offline Josh Cox

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Re: Zeroing Smith Speedo ?.
« Reply #3 on: 01.11. 2009 13:42 »
Boom boom,,,,,, he'll be here all week.
Black 1953 Golden Flash Plunger

Online RichardL

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Re: Zeroing Smith Speedo ?.
« Reply #4 on: 01.11. 2009 13:50 »
Richard,

I rebuilt mine earlier this year and, yes, all that is necessary is to lift the tabs and roll the wheels. I had lifted one a bit too high and bent the spring steel so that it no longer did its job. This, of course, led to a lot of dissassembly to bend it back. So, be very carful to lift them just the little bit necessary to free the wheels.

Richard L.

Plan on signing up for the world-wide 2017 DISTINGUISHED GENTLEMAN'S RIDE on September 30, 2018. Watch website at https://www.gentlemansride.com for details.

Online RichardL

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Re: Zeroing Smith Speedo ?.
« Reply #5 on: 01.11. 2009 13:58 »
P.S. 

I had the speedo all apart down to the wheels at one time and knew at that time how the 10's advancement worked, but can't recall it exactly right now. Also, I can't recall if the wheels had to be rotated in one direction, only. I think if they move freely in both directions, then it's OK to rotate them eithr way.

Here's the link to my speedo rebuild topic.

http://www.a7a10.net/forum/index.php/topic,680.0.html


Richard L.
Plan on signing up for the world-wide 2017 DISTINGUISHED GENTLEMAN'S RIDE on September 30, 2018. Watch website at https://www.gentlemansride.com for details.

Online RichardL

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Re: Zeroing Smith Speedo ?.
« Reply #6 on: 01.11. 2009 14:27 »



Below is text from a repair guide for magnetic type, but the odometer wheel movement scheme is the same.


It is possible to change the odometer reading by rotating the wheels. The wheels have
a locking mechanism that needs to be addressed in order to make the adjustment. Early
speedometers have brass fingers under the wheels between the frame and the wheels
which prevent forward movement, or backward movement past zero. You can rotate the
wheels backward by simply turning the wheel, but you can not back up past zero. To rotate
forward or backward at will, you need to press the brass finger underneath the wheel to
disengage the lock and then spin the wheel
Plan on signing up for the world-wide 2017 DISTINGUISHED GENTLEMAN'S RIDE on September 30, 2018. Watch website at https://www.gentlemansride.com for details.

Offline Josh Cox

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Re: Zeroing Smith Speedo ?.
« Reply #7 on: 01.11. 2009 14:31 »
Thank you Sir.
Black 1953 Golden Flash Plunger

Offline a10gf

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Re: Zeroing Smith Speedo ?.
« Reply #8 on: 01.11. 2009 20:50 »
http://www.a7a10.net/forum/index.php/topic,680.0.html
Richard, that topic is really some good work ! Have studied the pictures more closely for the 1st time, and have some work to do in there too, will be helpfull, and also was thinking of resetting the speedo to my actual riding distance since buying the bike.

A10 GF '53 My A10 website
"Success only gets you a ticket to a much more difficult task"

Offline mrshells

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Re: Zeroing Smith Speedo ?.
« Reply #9 on: 19.11. 2009 20:25 »
Josh
I have a friend who repairs speedos
he said hed do it for you FOC if you want to post it ????

Offline Josh Cox

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Re: Zeroing Smith Speedo ?.
« Reply #10 on: 19.11. 2009 20:56 »
Thanks for the offer, I have Zero'd it, it is now on the bike, soon to be riden.

Olev has suggested the maiden voyage being naked though the local mall wearing a guerilla mask, not sure thats the best option.........
Black 1953 Golden Flash Plunger

Offline coater87

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Re: Zeroing Smith Speedo ?.
« Reply #11 on: 20.11. 2009 00:39 »
 Josh,

 That is always the BEST option......

 Lee
Central Wisconsin in the U.S.

Offline mrshells

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Re: Zeroing Smith Speedo ?.
« Reply #12 on: 20.11. 2009 20:49 »
i know its off topic but Id like to see that on YOUTUBE !!! LOL