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Details about  New-Old-Stock Shimano 105 Front Derailleur...Braze-On Model for Double Chainring

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New-Old-Stock Shimano 105 Front Derailleur...Braze-On Model for Double Chainring
Item Ended
Item condition:
16 Oct, 2014 06:56:12 AEDST
US $39.99
Approximately AU $45.63(including postage)
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Item location:
Argonia, Kansas, United States


eBay item number:
Seller assumes all responsibility for this listing.

Item specifics

New: A brand-new, unused, unopened, undamaged item. See the seller's listing for full details. See all condition definitions- opens in a new window or tab

Front Derailleur

Number of Chainrings:






New-Old-Stock (NOS) Shimano 105 Front Derailleur...Braze-On Model for Double Chainring
Thank you for your interest in this item and please visit our store for other offerings. We have very reasonable shipping terms and combine orders to save money (for customers) on shipping costs. We also maintain customer friendly return/refund/exchange policies.

Product Description:

This is a new-old-stock (NOS) Shimano 105 front derailleur from the very early 90's (model FD-1055). Some of it's more prominent design features include...

  • Capacity: double chainring with 14T (max) difference (shop catalog specs)

  • Compatibility: marketed as road bike model during the 7-speed cassette/freewheel era (although see notes that follow for other drivetrain possibilities)

  • Mounting bracket: braze-on...so please make sure the intended frame has the mounting bracket on the seat tube to accomodate this mouting type

  • Cable pull: bottom (so cable routing must enter from below the unit)

  • Design: conventional/bottom swing

  • Weight: 100 grams (per our digital postal scale)

Our Shimano catalogs indicate the 105 groupset in the early 90's was marketed primarily as a seven-speed drivetrain with 126 mm (locknut-to-locknut) spacing. These specs indicate this front derailleur was considered narrow chain compatible, as defined for this period (as the seven speed drivetrain with a 126 mm freehub typically required a narrower chain). Please do keep in mind, however, when we speak of narrower chains from this era, this is relative to the wider chains historically used on regular spaced six speed drivetrains with 126 mm spacing and/or regular spaced five speed drivetrains with 120 mm spacing. Today's nine and ten speed compatible chains are even narrower then those that were typically used on these seven speed drivetrains.

Having said the above, we also compared this model FD-1055 front derailleur to it's predecessor FD-1050 (the latter of which was marketed in the late 80's primarily with a six speed drivetrain...so effectively compatible with a wider chain). We compared these two units...and specifically the derailleur cages (or chain guides), because we wanted to assess any differences in their width and/or design. After making such comparisions and taking some caliper measurements, it's actually fairly difficult to make any significant distinctions between the two cages...and the inside width of each cage appears similar. As a result, the derailleur cage (or chain guide) on this model FD-1055 should be wide enough to handle most of the wider chains found on vintage road bikes. The widest of these chains (8.0 mm or wider) may still present some chain rub problems, but we see very few of these extremely wide chains in today's market...so this will probably not be an issue when considering one of these front derailleurs for a vintage drivetrain.

In terms of condition, all of these front derailleurs are new-in-the-box...so their condition is very nice.

General note regarding narrower/wider front derailleur cages (chain guides) and chains...
We do not see many good quality clamp-on front derailleurs with these slightly wider cages, which are typically more effective at shifting the wider chains desired on some vintage road bikes. Narrow chains may also be used with these vintage setups, but because they are typically more expensive and usually not as durable (because they are made with thinner/lighter component pieces)...they are probably not the best alternative for a vintage road bike. Wider chains are usually a better option, because they are made with thicker/heavier component pieces that will generally hold up better over a longer period (so more miles between replacements). The problem is that most of today's front derailleurs are built with cages to accomodate extremely narrow chains (for 9 and 10-speed shifting), which means they might not work as well on a vintage road bike when a wider chain is preferred (for the reasons noted above). In many cases, it's still possible to get the newer front derailleurs to function...but with a narrower cage and a wider chain, it would appear the limit screw adjustments have to be near perfect to eliminate chain rub (so little margin for error here...and hence the reason the slightly wider cage on these older front derailleurs is a nice feature).

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We have also moved our "Terms and Conditions" to a separate page within our Ebay store. You may navigate to this page by clicking on the link on the left side of our "Store Home Page" (below the product categories) or you may click on one of our "Terms and Conditions" direct links herein.

Note to international customers regarding shipping...
We apologize to those that feel some of our international shipping charges are too high. We only charge actual shipping rates, but once an order exceeds a certain amount, we hesitate to use the least expensive US Postal Services First Class International service. We feel this way, because this service is not trackable or insurable...so more risk of loss. We prefer the US Postal Services Priority Mail International service for more expensive orders, because this service is trackable at USPS.com and insurable...so less risk of loss. Unfortunately, this service is more expensive, especially for smaller/lighter packages, relative to the First Class International service. We are sorry about these higher shipping costs, but hopefully our notes help to explain why this is the case.

Note to international customers regarding customs...
We also apologize to those that feel their country import taxes, duties and brokerage fees are excessive. As a small US business, we are required by customs' laws to declare each order as a retail sale. Additionally, the declared order value must be equal to total store purchases and/or winning auction bids (less any shipping costs, as these are not considered in the declared value). As a result, each customer will be responsible for paying his/her own country taxes, duties and brokerage fees, which will be collected upon delivery. Again, we apologize for these additional costs, but we cannot afford the penalties and fines that come with breaking customs' laws...so we have to strictly abide by them.

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