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Posts Tagged ‘old loop frame bicycle’

downtubes – the left one is original paint and the right partly sanded back

This bike was purchased cheaply in run down condition and while appearing quite sound, it needs a service, some rust removal, and cosmetic detailing. So I will start by disassembling the bike to find any potential issues and to properly clean and service the bearings and components. The grease is sure to be crusty and dry by now, but if the bearing races are sound  it should be easy to get the bike working smoothly again. I would like to keep it looking original and don’t wish to spend a complete fortune on it, nor do I want it looking showroom new.

fork crown

As I have said somewhere before, I like to retain some patina to keep a bike looking authentic  so it’s only the signs of neglect  that I want to remove, e.g. rust, excessive oil and grease, and oxidation of paint and alloy surfaces.

a shame about the saddle plastics – i will try to preserve it

On a closer look the white vinyl mattress saddle is starting to fall apart, and I don’t know if I can save it, though I will attempt to. The only alternative is a leather saddle, but I did like the shape and colour of this one … it’s very Brooks-like in the suspension, with its B66 style double rail. A “honey” B66s might be a nice alternative saddle.

some paint work revealed and top plain bearing cup ok

Unusually for 1980, the head and bottom bracket bearings are all plain balls rather than caged ones, which I think are better mechanically anyway, because the races use a greater number of balls and that should give a better bearing spread of the loads, even if it means a fiddly service job.

old paint meets “new”

The over-painting of the frame in places means more work for me as well, because I have to rub back the new paint and its undercoat to reach the original colour ( which is much nicer ). A previous owner had tried to hide the scratches and chips by masking and spray painting over broad areas on the forks, loop tube and guards. The overpaint is more dull grey-green than the original turquoise metallic.

and again on the forks

Luckily the original paint is mostly still underneath and I have found that using fine steel wool balls and rubbing by hand is the gentlest way to remove the top layer without damage. The original paint surface is much harder to abrade, and this makes it relatively easy to save. The steel wool also helps remove any rough surface rust at the same time, making it easier to neutralise the rust spots after the overpaint has been removed.

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Having had to use a larger chainwheel on the Speedwell popular, I found the gearing too high on starts and grades at 48x18T, up from the original 44x18T.

The “new” cottered crank set is one that I have had for many years and while it’s not as nice as the delicate spidery original one, it was the best I could find at short notice without using a tapered square modern crank that would be even more out of character.

a different bike - but this is the proper style of crank

So changing the rear cog was the way to go, and like the Malvern Star 2-star the cog on the old coaster hub is a standard thread “English” 1/8″ track style cog. These are relatively cheap up to 16-18T but beyond the 20T mark they are harder to find.

Surly 22T looks huge ...

Surly makes a range right up to 22T in both 1/8″ single speed and 3/32″ derailleur widths however, so I ordered a 22T to try. Believe it or not, while not horrendous, this cog cost more new than the entire bike did on ebay !  (I did get the bike at a very good price though, as it was neither going nor complete).

The top secret cog supplier was an online UK outlet – if you google them you will most likely see 1000 sites for a kid’s pop group that rhymes with “giggles” so just leave off the “s” on your search (teehee).

compare the old 18T with new 22T

To do this “gear change” you need a chain whip to move the (right hand threaded) cog and a C-spanner for the lockring – (it’s left hand thread btw). I use copper-slip anti seize compound on the threads too, so it’s not a nightmare job next time … put the new ones on by hand at first for a few turns – if you have to force them then something is wrong, so re-check before going further (The Golden Rule of Threads).

Also check the tightness again after a few rides, as the lockring can become loose when the cog tightens further under pedal pressure.

It’s also lucky I didn’t shorten the new chain when I fitted it a while back – it now fits about right with the wheel lining up more evenly with the mud guards (fenders) …

the hub's cog thread is now not visible - the thread showing is waiting for the lock ring

With the drilled holes and silver colour this cog (compared with the old one) somehow looks like the bike equivalent of fishnet stockings on the grand old dame, but I like it anyway !

now 48T x 22T on 642mm westwood rims (28 x 1 & 3/8 ")

Single speed gearing is always going to be a compromise – too high on starts and hills and/or too low at higher speed – I hope I don’t find this gear too low, I used 48x20T on the Malvern Star and that’s a good all round gearing for me, but I thought this bike should be a fraction lower. It feels right on a quick ride. We shall see.

you can just see the lock ring here

Incidentally, with a back pedal coaster braked bike the braking effort should also change along with the gearing, in this case needing less pressure but with a longer stroke, though it’s not all that obvious here.

Anyway, enough philosophy, I’m off riding.

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a lady of leisure

 

I think that my old Ladies’ Speedwell Popular is the perfect shape of bike for this new saddle, as the bars are quite high relative to the seat and all of the rider’s weight is on the sit bones. As an upright single speed with coaster brake only, the Speedwell is most suited to comfortable shorter distance rides on flattish terrain.

 

 

The broader saddles from Brooks have been designed for this upright seating position. The lower the bars relative to the seat and the more the rider’s weight is on hands and feet the narrower the saddle that is required, at least in my experience, because broad saddles may interfere with the free movement of the legs on longer, faster, “leaning forward” rides – so it’s worth thinking about what your bike will be used for when buying a Brooks (or any saddle), as well as considering your riding position. Narrow saddles are generally less comfortable on upright bikes, as I noticed after converting my Road King bars to “North Road” style.

 

b66s

b66s

 

In the true spirit of the Speedwell Popular, the B18 “Lady” saddle or the unsprung B68 would perhaps have been the right aesthetic choice for “Her Ladyship” as I think the Popular models may have originally been fitted with an embossed unsprung or semi-sprung broad leather saddle. Never mind, I have been anxious to replace the old white “Royal” Italian white vinyl saddle, as it was out of character with the rest of the bike, and much too softly sprung (worn?).

 

a non-original saddle came with this bike

 

Incidentally, the “S” on a Brooks saddle number like B66S refers to a shorter version of the (e.g.) B66 that is said to be more suited to the female build. This “S” is only around 20mm shorter than the standard B66 on the road king.

 

the b18 "lady" saddle

 

I did also want a black saddle for this bike so as not to clash with the bright colours and black grips, and as far as I know the B18 only comes in brown.

 

it's coming together now - b66s and mks pedals

 

On a recent ride I became aware that the gearing is too high for grades at 48x18T, and have ordered a larger rear track cog for it to improve low speed flexibility. A 2-speed hub would have been perfect with this current gearing as the second one – ah, well.

 

a classy platform - mks3000r

 

Problems with the substitute used left hand pedal have also led me to order some new MKS3000R rubber platform pedals – although larger than the original pedals and not-quite-right aesthetically for this bike, they are at least very well made replacements for classic bikes, the best I’ve seen recently of this “hard to find” pedal style.

 

the winged wheel ...

 

Here is a close up detail on this bike – and can you see why I would not re-paint this frame ?

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The cynical side of me thinks – “oh no — incense and nik-naks!” when I hear the word “Morpeth”, but to be fair, it is a great little town with genuine history and charm, even if it can be hard to see that clearly sometimes, hidden as it can be behind the old guys on new Harleys and the expensive SUVs etc. that are parked in the main street!

I did manage to find a couple of Old Bicycle treats there today though — Hurrah!

woohoo! - spotted behind campell's store...love it!

For a moment I thought I’d died and gone to bicycle heaven … or at least a recyclist’s paradise of some sort.

$150 o.n.o. ???? ----- they're dreaming!

Spotted for sale – a 5 speed ladies Road King at 150 bucks!! – I guess my red diamond framed 10 speed version was a bargain then, at zilch dollars and in much better condition … truly, I love my Road King but it is a department store bike for heaven’s sake!

the local bmx-ers

I was rather pleased with the above shot of Morpeth suburbia in a back street, away from the tourists.

to see the town in style!

Well, if there’s a better alternative to seeing the town than walking or cycling, it must be this!

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