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Armstrong Consort build- 1950s English Lightweight

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Armstrong Consort build- 1950s English Lightweight

Old 12-30-23, 04:45 PM
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Originally Posted by Portlandjim


I didn't like using an ancient English cottered BB, so I made my own! The spindle length is perfect for my 1946 Holdsworth. There was not much room for error! The spindle is made from 17-4 PH stainless steel, the cups are 303 stainless. By the way, there are two common sizes of cottered spindles, English is 5/8" and metric is 16MM. One should avoid unnecessary clearance between the crank arm and the BB spindle. Jim Merz
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Old 12-30-23, 04:54 PM
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Originally Posted by cocoabeachcrab
‘yeah, I could not afford the Merz precision version.
I have a 1950’s Italian frame that could use a cottered bottom bracket, I have a set of FB cranks…
I must look to see if anyone makes a workable cottered cartridge with Italian threading for a double. Need to confirm the lengths.

at one time I could spend $300 or so and buy an ancient Campagnolo cottered bottom bracket. Did not do that.
bike does have a steel Campagnolo seatpost, so there is a bit of precedent.
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Old 12-30-23, 05:25 PM
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Originally Posted by repechage
I must look to see if anyone makes a workable cottered cartridge with Italian threading for a double. Need to confirm the lengths.
I looked.

Didn't find any.

But that cottered unit with the plastic cups almost certainly has standard OD bearings, so pull them off and just get some Italian cups.
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Old 12-31-23, 09:55 AM
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Originally Posted by Ged117
Thanks Russell. Just wrapping my head around the gearing options. Chain rings for the TA are somewhat expensive, and this build is meant to be "in house" so to speak. Turns out my 14-28 freewheel fiver cog is Simplex. I was thinking of sending it to Pastor Bob for renewal.

Other than Sheldon, any recommended calculator? His doesn't include 5 speeds.
Sheldon has the option of putting in individual cogs. That's how I usually do it. What are your tooth counts on the freewheel?
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Old 12-31-23, 10:01 AM
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I did this with a typical 14-28 5 speed.
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Old 12-31-23, 10:46 AM
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Originally Posted by 52telecaster

I did this with a typical 14-28 5 speed.
Ah, I see! Thanks for showing me. Most of the time my terrain is relatively flat, with the odd steep climb if I'm riding in lake country or the big hills north of the city. You mentioned close gearing before, and pastorbobnlnh suggested 14-16-19-22-28 or 30, and I was thinking I might replace the 40T and 30T inner rings to have a 28T granny and a 42T or 44T middle.
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Old 12-31-23, 12:11 PM
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Originally Posted by Ged117
Ah, I see! Thanks for showing me. Most of the time my terrain is relatively flat, with the odd steep climb if I'm riding in lake country or the big hills north of the city. You mentioned close gearing before, and pastorbobnlnh suggested 14-16-19-22-28 or 30, and I was thinking I might replace the 40T and 30T inner rings to have a 28T granny and a 42T or 44T middle.
Pastor Bob has the right idea I think.
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Old 12-31-23, 04:55 PM
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I'm wondering if this Atom 77 Compact 6-speed might be the perfect fit for this special build?
I can also swap the 30T for a 28T.
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Old 01-01-24, 06:25 AM
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Originally Posted by pastorbobnlnh
I'm wondering if this Atom 77 Compact 6-speed might be the perfect fit for this special build?
Ican also swap the 30T for a 28T.
Nice range and reasonable steps make the 30-40-50 crank a reasonable pairing.
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Old 01-01-24, 07:53 AM
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Originally Posted by pastorbobnlnh
I'm wondering if this Atom 77 Compact 6-speed might be the perfect fit for this special build?
I can also swap the 30T for a 28T.
This will be perfect!

Thanks Bob and Russell for your help.
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Old 01-01-24, 10:27 AM
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Originally Posted by 52telecaster
Nice range and reasonable steps make the 30-40-50 crank a reasonable pairing.
I read one of your posts on TA chainrings elsewhere, and found that UK supplier. Looks like they have 42T inner and 28T inner available. Playing around with Sheldon's calculator shows some modest changes, but may not be significant enough to necessitate replacement.
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Old 01-01-24, 12:44 PM
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Originally Posted by Ged117
I read one of your posts on TA chainrings elsewhere, and found that UK supplier. Looks like they have 42T inner and 28T inner available. Playing around with Sheldon's calculator shows some modest changes, but may not be significant enough to necessitate replacement.
I wouldn't spend the money for two teeth typically but if you just got to have it you can go down to 26 and just figure that's your granny.
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Old 01-06-24, 03:13 PM
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@Ged117 would you mind sharing the serial number of your Armstrong? I'm wondering if it has the same format as FTWelder's Armstrong Tourmalet and my Dunelt of 50's vintage, xxxxx NO.
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Old 01-06-24, 05:50 PM
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Originally Posted by Insidious C.
@Ged117 would you mind sharing the serial number of your Armstrong? I'm wondering if it has the same format as FTWelder's Armstrong Tourmalet and my Dunelt of 50's vintage, xxxxx NO.
Where do you find the serial number on an Armstrong? I have one from about 1950 but I've never found the serial number on it.
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Old 01-06-24, 06:05 PM
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Originally Posted by Insidious C.
@Ged117 would you mind sharing the serial number of your Armstrong? I'm wondering if it has the same format as FTWelder's Armstrong Tourmalet and my Dunelt of 50's vintage, xxxxx NO.
Originally Posted by rhm
Where do you find the serial number on an Armstrong? I have one from about 1950 but I've never found the serial number on it.
I had a look at the bottom bracket shell. All I could see was the number 11. There may have been a third number, but surface rust has flaked off the metal.
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Old 01-06-24, 07:39 PM
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Originally Posted by rhm
Where do you find the serial number on an Armstrong? I have one from about 1950 but I've never found the serial number on it.
Originally Posted by Ged117
I had a look at the bottom bracket shell. All I could see was the number 11. There may have been a third number, but surface rust has flaked off the metal.
S/n on outer surface of rear NDS dropout. Frank's Armstrong 15246 NO.


My Dunelt 185 NO. I suspect both frames made by Armstrong or maybe Phillips.
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Old 01-07-24, 05:51 AM
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I'm curious about the story of the extensive delay. I imagine that the backlog of (lost?) shipping containers of all varieties, due to COVID, was to blame.
Humpfh! I may possibly receive a tire that went missing. Any more info from the frame's seller? Was he in Britain?

Here's an Armstrong number in the same place as referred-to, with the same sequencing. Second pic is Armstrong "3-speed" with Raleigh number on b.b. shell.

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Old 01-07-24, 01:06 PM
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Originally Posted by Insidious C.
S/n on outer surface of rear NDS dropout. Frank's Armstrong 15246 NO.


My Dunelt 185 NO. I suspect both frames made by Armstrong or maybe Phillips.
Here's the number:
PXL_20240107_023951180


Originally Posted by 1989Pre
I'm curious about the story of the extensive delay. I imagine that the backlog of (lost?) shipping containers of all varieties, due to COVID, was to blame.
Humpfh! I may possibly receive a tire that went missing. Any more info from the frame's seller? Was he in Britain?

Here's an Armstrong number in the same place as referred-to, with the same sequencing. Second pic is Armstrong "3-speed" with Raleigh number on b.b. shell.
UK seller didn't know where the frame went, and we tried to locate via the courier, but they thought it ended up in "lost packages" somewhere. Hence Ark of the Covenant warehouse in my mind. Then a few years later, it shows up at his place back in the UK.
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