PVC Bike Repair Stand

Step 5 Fit the Bottom-Bracket Support

After the last cemented piece has cured for at least 8 hours, try placing your bike on the stand. Keep your hand on it, because it probably won't be stable until you do the final fitting. Note where the chain-stays contact the bottom-bracket support & start carving it until the bottom-bracket shell rests nicely in the support. You should take care of how much material you remove on one side vs. the other in order to keep the bike straight upright.