benjabbi
Bontrager Fan
They look like the bits supplied with a Royce BB tool for bolting it in place.
Mystery and Unidentified Parts
- Thread starter Once A Hero
- Start date
Twozaskars
Senior Retro Guru
Could anyone help identify this frame?
Caj Remtiw
Old School Hero
Mt. Cycle hardtail prototype maybe?
Obi-Juan
Retro Guru
and that bottom bracket?
Fat tyre kicker
Retro Newbie
Might have put my thread in the wrong place, anyone recognise these ?
Fat tyre kicker
Retro Newbie
Thanks, I kept them for a reason, thought they could be used at some point, not bad going, first thread after 10 years 
emmitch100
Retro Newbie
I've got what appear to be Topline MTB cranks, but the red spider in the image below doesnt look like either the "mountain" or SLS spiders for Toplines I've found on the web (from bikepro).
The red spider is riveted to the crank arm, as in other toplines. Any ideas on the origin/purpose/history of the spider? The bike is circa 1995
Thanks
Emmit
The red spider is riveted to the crank arm, as in other toplines. Any ideas on the origin/purpose/history of the spider? The bike is circa 1995
Thanks
Emmit
Caj Remtiw
Old School Hero
Topline was a small CNC machine "job shop" that first started making crank arms for Gary Cook to compete against the company he sold off (Cook Bros. Racing). They then began making Grafton Joystix until where were so may structural failures they offered John Grafton another style of crank that they designed for Gary Cook that was not "deceptively similar" to Cook Bros. Products.
So what killed these small bicycle part makers:
Topline: Shimano and the other "big guys" started making REALLY good stuff and they split to find their next "fast $$$".
John Grafton: His wife started having an affair with one of his vendors (John had a tool grinding business and made NONE of his own parts). His wife got the bicycle business out of the divorce, and it quickly "folded".
CQP/ Cook's: Was financially "cooked" by the cost of defending himself against the lawsuit by the fellow that bought Cook Bros. from him. He drank himself to death shortly thereafter!
Cook Bros. Racing: They got their first development contract from NASA to study "hyper gravity dosing for astronauts", then after Sept. 11, 2001 was "contracted" by the US Department of Defense to design ???. I believe that they quit doing bicycle stuff because... It plane old, just wasn't worth the money!
So what killed these small bicycle part makers:
Topline: Shimano and the other "big guys" started making REALLY good stuff and they split to find their next "fast $$$".
John Grafton: His wife started having an affair with one of his vendors (John had a tool grinding business and made NONE of his own parts). His wife got the bicycle business out of the divorce, and it quickly "folded".
CQP/ Cook's: Was financially "cooked" by the cost of defending himself against the lawsuit by the fellow that bought Cook Bros. from him. He drank himself to death shortly thereafter!
Cook Bros. Racing: They got their first development contract from NASA to study "hyper gravity dosing for astronauts", then after Sept. 11, 2001 was "contracted" by the US Department of Defense to design ???. I believe that they quit doing bicycle stuff because... It plane old, just wasn't worth the money!
nodding dog
Retrobike Rider
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The red spider is probably the CD version of the silver one.
BCD for the granny ring should be 58mm which is 34.1mm from hole to hole.
The silver one is for full sized chainrings so 74mm BCD (43.5mm hole to hole).
All sizes on Sheldon's website: https://www.sheldonbrown.com/cribsheet-bcd.html
Although Caj Remtiw's answer is a bit more interesting!
BCD for the granny ring should be 58mm which is 34.1mm from hole to hole.
The silver one is for full sized chainrings so 74mm BCD (43.5mm hole to hole).
All sizes on Sheldon's website: https://www.sheldonbrown.com/cribsheet-bcd.html
Although Caj Remtiw's answer is a bit more interesting!
