Components
Search
By Category
Photo Album
Shifting Systems
Add Components
Frames
Bicycles & Frames 
Head Badges
Frame Parts
Add Frame Items
Other Collections
Vintage Tools
Team Jerseys
Catalog Scans
Recent Content
Add New Items
Help & Information
Brand Directory
Resources
FAQ & Help
Contact Us
eBay Seller List
Connect with VeloBase.com
Facebook LinkedIn
VeloBase Sponsor Ads
Sponsorship Info
   
Help Support VeloBase.com
Find the information on VeloBase.com useful?
Please consider donating a few dollars towards our costs. Donate via Paypal at the bottom of this page or Contact Us for other ways to help.
GB forged alloy Hiduminium spearpoint
Back
Report
Main Photo
Category:  Stems
Name:  GB forged alloy Hiduminium spearpoint
Brand:  GB
Model:  Hiduminium Spearpoint (alloy)
Years:  1950's - 1960's
Country:  England
Added By: JFischer on 08/03/07
Updated By: 1989Pre on 07/07/20
Additional Photos - click for full size
GB forged alloy Hiduminium spearpointGB forged alloy Hiduminium spearpointGB forged alloy Hiduminium spearpoint
MaterialAluminumMarkingsGB Forged Hiduminium, GB Made in England or GB British Made
Bar Clamp Size 1"; 25.4Quill Size 22.2
Expander Style ConicalExpander Bolt Size
Binder Bolt Size   
General Information
This is possibly GB’s best known stem, fitted as original equipment to just about every make of British lightweight at some time or another during the 50s and 60s. It was initially only available in 2¾" and 3½" lengths, with 2” and 4” versions added later. The 2” stem had a 5 1/8" shaft, 5½" for all the others. It was only offered in 1”/25.4mm clamp size for 7/8”/22.2mm quills. It does not seem to have ever been given its own definitive name (unlike GB’s later-production metric-spec stems) so tends to be variously called ‘Alloy Spearpoint’, ‘Standard’ or ‘Hiduminium’, although that latter is what it’s made of rather than its model designation (hiduminium being a term coined for a type of aluminium – alluminum if you prefer(!) – alloy developed for airframe use during WW2). The catalogues mostly just seem to call it ‘alloy stem’. It is a forged stem with an oval-section tubular extension. By the early 60s it had replaced GB’s earlier, girder-section stem, although the girder model was offered alongside it for some time as their shortest available extension (1¾"). The example shown has been drilled for a centre-pull front brake, a common DIY mod and often done to a high engineering standard and so easily mistaken for a factory specification.
Quality:Rarity:
 
 
See Incorrect Information? Log-in to submit report.  
Additional Resources
Resources:Reference & Charts
User Comments
Sign-in Required
  Loading Comments


By pressing Verify below, you express verification that the photos shown are indeed of the component listed. Please do not verify if you are not sure that all photos are of the correct item. If you identify a photo that is NOT of the correct item, please use the Report feature to flag that photo.

Note: You can not verify photos that you have uploaded.
Gipiemme
VeloBase v.2.8.7 - a Fischer Frameworks application, Copyright © (2024) - All rights reserved.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Find the information on VeloBase.com useful? Please consider donating a few dollars towards the web-hosting cost. Thank you.