Thread: DIY Tools for your bike work
View Single Post
Old 02-09-21 | 11:49 PM
  #45  
cyccommute's Avatar
cyccommute
Mad bike riding scientist
Titanium Club Membership
20 Anniversary
Community Builder
Community Influencer
 
Joined: Nov 2004
Posts: 29,137
Likes: 6,186
From: Denver, CO

Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones

My homemade tool is for removing the fixed cup on the bottom bracket.

I’ve come to the conclusion that we have been taught to remove fixed cups wrong for a long time. I, like most everyone, have been taught to remove the adjustable cup first, followed by the fixed cup. We avoid removing the fixed cup because it can be difficult to remove. I realized that I needed to stand the procedure on its head. Remove the fixed cup first since it is the hardest one and the wrench needs the most stabilization. The spindle can be used to hold the tool but it will allow the wrench to turn with the cup so that the tool doesn’t even need to be removed to completely remove the fixed cup.

Since there are 2 types of spindle, the procedure and fastener used will depend on which spindle is present. The nut or bolt used on the spindle can be used to hold everything in place.

Tool Assembly
The parts for the nutted spindle needed are shown here. Most everything can be found in just about any shop. The large fender washer is probably the only thing you’ll have to go to a hardware store for.

A large fender washer, an adjustable cup, and the spindle nut are needed. Another washer may be needed to get the spacing right. The order of assembly follows







From above it should look like this

Turn the wrench as usual. If more leverage is needed, a cheater bar is needed.

For bolted spindles, the order of assembly is the same except a bolt is needed.



This method is much easier to use than other methods I’ve used. The spindle stabilizes the wrench and turns with it much like a cartridge bearing does. It makes it easier to remove the fixed cup and results in less blood spilled.
__________________
Stuart Black
Dreamin' of Bemidji Down the Mississippi (in part)
Plan Epsilon Around Lake Michigan in the era of Covid
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!





cyccommute is offline  
Reply
2