Unbranded NOS Vintage Single 48T Cottered Crank/Chainset

Unbranded NOS Vintage Single 48T Cottered Crank/ChainsetOriginal part produced in the 1970s New old stock! Still unused after all these years Suitable for historic cycling events such as L'Eroica Worldwide shipping Unbranded vintage chainset, most likely in production during the 1970s (yet still new & unused after all this time!). Made from steel and weighing in at 1005 grams. A fine choice for keeping your vintage bike authentic, but also great for any other compatible bike too. If you're taking part in

✓ Original part - produced in the 1970s
✓ New old stock! Still unused after all these years
✓ Suitable for historic cycling events such as L'Eroica
✓ Worldwide shipping

Unbranded vintage chainset, most likely in production during the 1970s (yet still new & unused after all this time!). Made from steel and weighing in at 1005 grams. A fine choice for keeping your vintage bike authentic, but also great for any other compatible bike too.

If you're taking part in L'Eroica or a similar vintage event, this is fully compliant - so rest assured, the pre-1987 police won't lock you up for having the wrong chainset!

OVERVIEW

---

Body Condition - New Old Stock*
Chainring Condition - New Old Stock*
Production Era - 1970s
Material - Steel
Weight - 1005 g
Stock Code- D-CS23V

*New old stock items may have marks from storage over the years, and as we often have multiples they can vary from piece to piece, but they are always genuine new & unused items.

TECHNICAL INFO

---

Chainring Count - Single
Tooth Count - 48
Bottom Bracket Type - Cottered
Chain Width - 1/8"
Intended Speed* - Single Speed / Track
Crank Length - 170 mm
Pedal Threads - Standard (9/16" x 20 TPI)

*See help section.

▼SHIPPING, TAXES & RETURNS

---

We've been safely sending orders around the world since 2010. There's a handy shipping calculator on the shopping cart page so you can see the cost of postage as soon as you've added it to your basket. Your order will be carefully packed and sent with tracking & insurance, we despatch most orders within 2-3 working days but larger items can often take a little longer to process.

We accept returns, please notify us within 14 days and ensure the item arrives back with us no later than 30 days after the order was received.

EU Customers – for orders under €150 (excluding shipping), VAT will be collected at checkout – no extra import fees to pay on delivery! For orders over €150 any import fees will be payable to the carrier before delivery.

USA Customers – import fees are now collected at checkout for all orders to the US, so there won’t be any surprise charges when your order arrives.

Other International Customers – local import fees may still apply, charged by your customs office or courier before delivery. These are not collected by us, so please check your local rates before purchasing.

Any applicable fees will appear at checkout.

▼HELP SECTION

---

Chainring count - the number of chainrings on the chainset. Fixed gear track bikes, single-speeds and some geared bikes use a single chainring, road bikes commonly use a double (two rings) and most touring bikes and mountain bikes will use a triple chainset (three rings).

Tooth count - the number of teeth on the chainring(s), the higher the number the harder the gear.

Chain width - this is only relevant for chainsets with a single chainring - if this is ⅛” then you must use a ⅛” chain. All double and triple (and some single) ring chainsets will use a standard 3/32” chain.

BCD - stands for Bolt Circle Diameter (sometimes referred to as PCD - Pitch Circle Diameter) and is only really needed when changing chainrings. To calculate the BCD, measure the distance in millimeters from the centre of any chainring bolt to the centre of an adjacent one and multiply it by 1.709 (you’ll likely need to round the resulting number up or down a little to get your BCD measurement).

*Intended speed - the number of cogs at the back the chainset was designed to be used with. We refer to it as ‘intended’ speed as most double and triple chainsets will actually work with different speeds than originally intended, but the further away you get from the intended speed the more likely you are to experience minor setup issues. The exception being some chainsets intended for 10 speed use or higher, with these it’s better to stick to the intended speed.

Crank length - this is measured from the absolute centre of the bottom bracket hole to the centre of the hole for the pedal.

Pedal threads - the pattern of the thread that your pedals screw into, this is usually stamped on the pedals themselves and most bikes use a standard thread of 9/16” x 20 tpi. The exceptions being older French bikes, bikes with cheaper one-piece type chainsets and Shimano’s Dyna Drive system (easily identifiable as the pedal holes are about an inch wide!).

Bottom bracket type - ‘square taper’, as the name suggests have a square shaped axle that slots into the chainset and ‘cottered’ axles are round and secured by pins - pretty much every bike up until the 1990s would use one of these, cottered being the much earlier system. Since then, different manufacturers have introduced their own systems that are not interchangeable so you must use a chainset that matches.