As part of a bike upgrade I became interested in rebuilding Speedplay Zero pedals (older style). My bit of obsession lead to buying Japanese bearing from Misumi and measuring the original, Ebay and AliExpress shafts to check for proper bearing fit.
Assembly Instruction
The best set of instruction including bearing sizes I found https://weightweenies.starbike.com/forum/viewtopic.php?f=3&t=81464
Bearings Used
All bearing purchased from Misumi, links provided
Titanium Shafts
- https://www.ebay.com/itm/313136113063?var=611922203298
- https://www.aliexpress.us/item/2251832629672875.html?spm=a2g0o.order_list.order_list_main.4.1a6b1802qkDiKR&gatewayAdapt=glo2usa
Shaft Measurements
| Type | Stock | Stock | Blue Ti | Blue Ti | Black Ti | Black Ti | Silver Ti | Silver Ti |
|---|---|---|---|---|---|---|---|---|
| Supplier | Speedplay | Speedplay | Ebay HonestLife2020 | CyclingMan | CyclingMan | CyclingMan | CyclingMan | |
| Side | L | R | L | R | L | R | L | R |
| Roller | 10.031 | 10.037 | 10.037 | 10.039 | 10.038 | 10.039 | 10.041 | |
| Larger Deep Groove | 6.989 | 6.988 | 6.993 | 6.988 | 6.985 | 6.985 | 6.992 | 6.991 |
| Smaller Deep Groove | 5.987 | 5.986 | 5.992 | 5.986 | 5.984 | 5.985 | 5.991 | 5.99 |
I was very happy with the overall accuracy of the eBay and AliExpress titanium shafts. They assembled well and felt very smooth with little to no play in the shaft
