Who invented Cotter Pins?

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Mick F
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Who invented Cotter Pins?

Postby Mick F » 2 Jan 2009, 11:55am

...... coz whoever it was, wants shooting!
(probably Mr Cotter)

I've just spent a "happy" hour, drilling, hammering, chiseling, and swearing at one! I drilled right through the RH pin, soaked it in Plus Gas, used a hammer and punch and hammered away and drilled a bit more. I got to thinking it was fossilised in there!

I finally released it, not bothering with the LH side. With the chain side off, I undid the adjustable cup and withdrew the BB spindle complete with LH crank.

The fixed cup took some getting out, but I used a big spanner and threaded bar with big washers to hold it tight against it to unscrew.

This is all happening to my Raleigh Chopper. I'm going for a full strip-down, but I get the impression that nothing's been released since it was new in 1971!

I've yet to tackle the headset, but I'm not optimistic that the stem will come out .........

Anyway, that's my first foray into bike maintenance in 2009.

Is anyone else "at it" now with horror stories?
Mick F. Cornwall

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Greybeard
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Postby Greybeard » 2 Jan 2009, 12:14pm

Not touched since 1971? Pah! That was only yesterday in my little world :wink:
I've been trying to shift the stem of my 1904 BSA so that I can get it nickel plated - no chance :evil: Tried WD40, Plusgas, diesel and even a bit of heat - it's an immoveable object. I guess that the handlebars are going to get a lick of black paint instead :cry: I hope the purists ain't listening.
Just fitted the cream 28 inch tyres to the rims I rebuilt - can't wait to give it a spin :P

Why do we take these jobs on? I also have a Gents' 1907 Royal Sunbeam in a delicate shade of rust (but it was used in Northern France during the Great War by a nurse - blimey, she must have been tall :shock: ) and also a turn of the century Triumph roadster in a similar/worse state - only missing a rear hub so far.
When and if I get them up and running (with carbide or oil lamps to match of course) I'll try posting some pics.

Wouldn't it be nice to take the Sunbeam back over there one day - or am I a sentimentalist :?

Have a good new year, all.
Steve

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MikewsMITH2
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Postby MikewsMITH2 » 2 Jan 2009, 5:52pm

Removing a cotter pin. Take it to your friendly local garage (if there is still such a thing near you) and get hem to use an air hammer. Its another taper thingy and shock is always the answer to these. At least that's what I used to do back in the day.

My problem is removing some horrible plastic pedals from an alloy crankset. Both are solid!

Mike McGeever
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Stuck cotter pin

Postby Mike McGeever » 3 Jan 2009, 1:05am

Unscrew nut two full turns.
Put suitable socket -perhaps 10 mm around head of cotter pin then press out in vise
No vice?
Again slack off nut two turns suport head with, say half inch pipe, and use suitable "drift" ie long peice of metal resting on nut to drive out pin.

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MikewsMITH2
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Postby MikewsMITH2 » 3 Jan 2009, 10:25am


Ambermile
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Postby Ambermile » 3 Jan 2009, 10:31am

Those are neat, wish I'd thought of them!

Arthur
I make stuff, that's all.

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MikewsMITH2
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Postby MikewsMITH2 » 3 Jan 2009, 1:54pm

You could weld a 10mm socket to a large G cramp

JohnW
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Postby JohnW » 3 Jan 2009, 8:08pm

I don't know who invented cotter-pins, but in my view he wasn't as big a hero as the guy who invented cotterless cranks.

thirdcrank
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Postby thirdcrank » 3 Jan 2009, 8:16pm

Here's Mr (Jamesie) Cotter:

Image

As far as I know, the *Crankies have remained completely cotterless.....

* Yep, I know it's the Krankies, but then it would be kotterless :roll:

Mister W
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Postby Mister W » 5 Jan 2009, 12:16pm

Aluminium seat post in a steel frame.......... I've no idea how long it's been in there but I've been riding it for 6 months without a seatpost clamp and it still hasn't shifted :?

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Mick F
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Postby Mick F » 5 Jan 2009, 12:17pm

Try going over a few bumps?
Mick F. Cornwall

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CJ
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Re: Who invented Cotter Pins?

Postby CJ » 5 Jan 2009, 3:30pm

Mick F wrote:...... coz whoever it was, wants shooting!
(probably Mr Cotter)

Stanley Cotterell I presume? :wink:
Chris Juden
One lady owner, never raced or jumped.

burnsie
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Postby burnsie » 11 Jan 2009, 5:54pm

God...cotter pins!! Back in mid 80s and I was an avid reader of Richards Bicycle book...and heavily influenced by it..decided I needed to do some essential maintenance on my puch 5 -speed...for th next week the kitchen...or at least the air in it..was deepest blue..never knew I could so effectively combine so many swear words in so many different ways due to immense frustration at being unable to knock cotter pins out-did so somehow eventually, but was severely worried that would damage bottom bracket with force of blows. Seem to rememer being in shop I bought bike from at some later point and mentioned this to the man there who laughed smugly and said oh yes, well we use (I thought he said steam hammer), but my knowledge of aforementioned implement, gained from final scene of the movie 'The Fly' (original version) was that this wouldn't be practical and reading replies here I now realise he must have said 'air hammer)...this didn't help me at all.....the whole job turend out to be disastrous, with frozen chains/freewheels etc etc.

Lesson learnt? If it ain't broke..don't fix it!! (sorry Mick..know this goes against everything you say..but never again!!!) :lol:

JohnW
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Postby JohnW » 11 Jan 2009, 10:10pm

And tell you what burnsie - filing down new cotterpins to fit, without the expertise and suitable vice would've turned the air bluer.

The man who invented cotterless crank/bottom bracket sets deserves a medal.

burnsie
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Postby burnsie » 12 Jan 2009, 12:35pm

No argument from me there!!