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Early D shaped Speedometer (Speedo) dismantle (strip) How (not?) to er... "Guide"
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Hawaii50
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May 3, 2013 - 10:57 pm
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I decided that the speedo movement had spent enough time in the pickling jar so tickled it with a paintbrush:

IMG_6675sml-1.jpg

It's looking almost as grotty but I can at least see the broken spring! (yep - red arrow)

I'm thinking the old Stella tin might not be all that much of a good idea - as in at this rate I'm not going to be able to produce enough empties! (rofl!!!) 

 

IMG_6676sml.jpg

But at least I've found these two screws which after a good soaking in WD40 might even come undone...

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1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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Hawaii50
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May 4, 2013 - 12:13 am
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I've just realised that this is starting to read like an ad for "Stella Artois", oops well erm sorry:

"Other beers are available"

They're rubbish, usually, but available! (however there are exceptions to this rule.........)....

And if admin can get in a plug for her local brewery....

(see above) ... then ......

** Please log in to view **

... I can too! 

cheerscheerscheers

1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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Piquet
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May 4, 2013 - 8:31 am
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Only last night I was beginning to wonder how much you were getting for product placement!

rofl

I'm not a complete idiot ............................................ some parts are missing.

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Hawaii50
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May 13, 2013 - 10:31 pm
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I phoned Footman James for an insurance quote today and they asked me if all the bikes had speedometers? Yes I replied honestly, luckily the guy never asked if they actually worked! embarassedninja so now this post is taking on a bit more er, gravitas. Eek!

IMG_6528Asml.jpg

These 4 screws should be slackened before it all gets too serious...

IMG_6675Asml.jpg

This is a better view of the lower two, and a reminder of the broken spring finger...

IMG_6682sml.jpg

After removing the main two screws the side piece can be GENTLY prised upwards... 

IMG_6683sml.jpg

Until - Voila! it is off! - and so am I, off that is for a beer... but which beer? There's a hint in the picture!cheers

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1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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Hawaii50
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May 14, 2013 - 10:09 pm
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IMG_6685sml.jpg

Next step is to pluck out the little fellow above that looks like the robot in "Short Circuit"? I think it's called the escapement anchor shaft or somesuch... well it is now!

IMG_6686sml.jpg

Followed by the camshaft assembly above (bet you didn't know Bantams had camshafts - overhead ones at that!) (as in "above the cylinder head"!)

IMG_6687sml-1.jpg

Undo the screw securing the coiled spring and extract the balance shaft...

IMG_6689sml.jpg

Next unscrew the two screws that hold the fingers to the brass post above, see the handy tip on how to deal with tiny little screws:

IMG_6690sml.jpg

Blue-Tac on the tip of a watchmaker's screwdriver! Yes I know it looks like something that ought to be inside a handkerchief but... hmmm... that would work too! And it's cheaper! And better for the environmentsmile! (Just a bit gross - YUK!) ... moving swiftly on... 

IMG_6691sml.jpg

The rocking spindle can now be removed.

Now for something nasty:

IMG_6693sml.jpg

The horrid little screw that I said needed to be loosened earlier. Wouldn't loosen would it! No! The little b*****d!!! GRRRRR!!!

Oh well no point in getting angry, it's a good excuse for a beer methinks!

Cheers! cheers

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1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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Katj
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May 14, 2013 - 10:27 pm
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Thanks  Hawaii50 ... I really look forward to your posts ... because I know it's time to visit the pub!!

and of course the technical skills and dexterity shown in the execution (I think a totally appropriate word) of the dismantling of this unfortunate device

whistle

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Hawaii50
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May 14, 2013 - 10:43 pm
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Execution? I think you mean - Murder!

ninja

1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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Hawaii50
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May 20, 2013 - 9:41 pm
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Whilst the Nasty Screw receives it's punishment of drowning in WD40 I decided to see if I could find out why the rocking spindle never seemed to engage with the integrator wheel.

IMG_6695sml.jpg

This cam follower (red arrows) was seized solidly to it's shaft and therefore being held in mid-air - after some WD-40 punishment and a little bit of persuasion from the pliers (you can see the marks, more evidence of butchery, so report me to the RSPCS) (Royal Society for the Prevention of Cruelty to Stella cans) (Ha! bet you thought it would stand for Speedo's!), it repented...

IMG_6697sml.jpg

This would appear to be two parts pressed together. There was just enough clearance to extract it...

IMG_6700sml.jpg

I decided to re-assemble everything as an 'aide memoir' using some special oil:

IMG_6698Asml.jpg

Which for some strange reason has brought on a bit of a thirst!

cheers

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1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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Katj
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May 23, 2013 - 11:24 pm
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Just wondering can pull your finger out and finish this ... Coz I ain't getting any younger whistle http://i464.photobucket.com/albums/rr8/mephisto927/Minx/Smilies/Please1.gif~original

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Hawaii50
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May 24, 2013 - 7:23 pm
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Katj said

Just wondering can pull your finger out and finish this … Coz I ain't getting any younger whistle http://i464.photobucket.com/albums/rr8/mephisto927/Minx/Smilies/Please1.gif~original

 

Ooooh!

 

Patience please!

 

I hope nobody was hoping for a happy ending...

Now all I need to deliver is any old ending!

However, look at this:

Chronometric-movementexploded-diagram-1a.jpg

Not bad eh?

I needed to remove the centre spindle as it was seized solidly with the Corrector Wheel and Stabilisator Wheel. as you can see from the above the wheels should just slide off, however it was not to be so easy as you will see in the next thrilling installment... 

1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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Hawaii50
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May 28, 2013 - 9:52 pm
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Okay here we go again!

IMG_6715sml.jpg

Above is the Centre Shaft with the seized Stabilisator and Corrector Wheels in place. You can see the wear to the end of the shaft circled in red. This wear must have occurred after the problems first manifested themselves i.e. the Centre wheel must still have been able to turn... interesting!

IMG_6718sml.jpg

Above shows how the Centre Shaft is staked into the Bottom Plate, so it's not going to want to come out!

Which of course the eagle-eyed reader will already have spotted, erm, it didn't!

IMG_6719sml.jpg

Oh No - It Broke! GRRRR!!!ranting

Beer Time! cheers...smile

Remember dear reader, I'm making a complete b*ll*cks of this so that you don't have to!

IMG_6770sml.jpg

After several beerscheerscheerscheers and a good drowning in WD40popcorn(patience Admin!old-ladytee hee!) the Corrector Wheel parted company with the shaft - Yipee!

How about a celebratory beer?

Yes Please! cheers

Leaving just...

IMG_6772sml.jpg

The Stabilisator Wheel seized onto the Centre Shaft.

So just a bit more of a drowning in WD40 for a few more short weeks/months/years? and we're there! - One fully stripped Smith's 'D' shaped chronometric speedometer!

Calls for another beer methinks! cheers

   

Sorry Admin! Mortadmin-1.jpg

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1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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Katj
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May 28, 2013 - 11:33 pm
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Hawaii50 said

After several beerscheerscheerscheers and a good drowning in WD40popcorn

 

 

After drowning yourself in beer and WD40 ... I'm not surprised your stabiliser is stuck  ... cheerscheerscheersrofl

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Hawaii50
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May 29, 2013 - 6:30 pm
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Katj said 
 

After drowning yourself in beer and WD40 ... I'm not surprised your stabiliser is stuck  ... cheerscheerscheersrofl

Oh how I fought the temptation to paraphrase Sir Winston's response to Bessie Braddock, citing your new canine avatar picture as evidence.

However for the following three reasons - I didn't.

1) It would not be fair to the dogwhistle

2) You would change your avatar pictureranting

3) I know about the crocodile skin handbagScared smiley 16

But I will be sober in the morning!cheers

1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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Hawaii50
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June 3, 2013 - 11:26 pm
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Much earlier in this saga I told you how NOT to extract the odometer spindle, but I may have been a little too brief in my explanation as to how to extract the thin washer that holds everything together. The key to this is in the small spring that is enclosed in a brass collar:

IMG_6546sml2.jpg

The brass collar can be easily prised away and the spring compressed to allow the "funny little clip thingy" to be removed. At least that's how I think it should be done!

Oh Crikey look at the time! 

Beer Needed!

cheers

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1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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mike joiner
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March 30, 2014 - 6:37 pm
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Hi just to say thanks to info I have just managed to bring a D speedo back to life 

the scale of the parts is hard to believe they are so small and very fiddly 

                  Thanks Mike

 

 

 

 

 

 

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Hawaii50
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March 30, 2014 - 11:13 pm
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Excellent news Mike - hope you had as much fun as me!

P.S. May 29th post not quite so scathingly humorous now that admin is no longer admin and avatar no longer dog, but stabiliser wasn't stuck for long...

1950 D1 (Ex Hawaii!), 1936 Ariel 500 OHV, 1923 Raleigh Model 2 350 SV, Various bikes hidden from the Missus in sheds, under floorboards etc., etc., ...

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Johnser3050
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April 6, 2014 - 2:10 pm
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This is a really useful write up thanks. Its a shame that that one wont be seeing the road again but you might be able to use the spares to resurrect another.

I have a 55mph that I managed to build up from parts of two speedos but am presented with a broken spring finger just like yours! Does anyone know of a source for spares for these? I tried a few places online and they either didnt have any or weren't willing to sell.

PS wd40 isnt a great penetrating fluid. its better at displacing water. I'd recommend a penetrating specific fluid like plusgas. although to be fair, it looks like WD has been serving you well!

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dimitris
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June 24, 2014 - 8:30 pm
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I searched a lot..but finally found this!

Just what i was looking for...GREAT TOPIC!

I didnt know how to open the speedo, was afraid to brake something... 

With this, i managed to open, and have something like this below..

15x8wl.jpg

The speedometer..i think is working. I tried spin the wheel, and it was moving up, had little trouble going back to zero..guess little wd40 will do the job...

The odometer..was stucked...and i think it must be since looong long time...it only shows...508 miles!!!

I saw that the little wheel in Red circle above, it's stucked!

I will leave overnight with lots of WD40.. and see if i can move it tomorrow..

In the meantimem i will read carefully all of the posts in this topic... I hope will not have to strip the whole thing down...o-m-g

Thank you Hawaii50! 

thank-you

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BSA D1, 125cc (1952)---BSA D10 Sport 175cc (1967)---Triumph Cub T20 (1960)

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CharlieCeng
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June 24, 2014 - 10:39 pm
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Be very careful with the odometer wheels. The numbers smear very easily - wipe them very gently if you must!

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dimitris
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June 25, 2014 - 11:04 pm
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CharlieCeng said
Be very careful with the odometer wheels. The numbers smear very easily - wipe them very gently if you must!

oops

I used warm water, and engine degreaser to clean all that old grease from the housing..

Unfortunately...that ruined some of the numbers...they just pilled off...

I measured the counters rolls with the ten numbers each, the letter height, space between, and i will male it on PC.

I also found the speedo cover decal's picture, and i will have them all printed in glossy sticker to replace everything.
(The cover plate is also on ebay, but in case i dont win the auction...)

Now i have the odometer working, but the speedo is behaving little strange... 

"NOT TO DO" of the day: Dont use warm water or engine degreaser for cleaning...ranting

BSA D1, 125cc (1952)---BSA D10 Sport 175cc (1967)---Triumph Cub T20 (1960)

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