Fixed Wheel and Single Speed Bicycle FAQ's (part 3)

VeloSolo Fixed Wheel And Singlespeed Frequently Asked Questions - part 3:
d) Other technical and miscellaneous questions:
1. Do I have to fit a rear brake?2. If I mount a cog on my disc mount how do I use my rear disc brake?3. Can I use a QR on a fixed wheel?4. Can I use a 1/8" chain with a 3/32" cog?5. What is a magic gear?6. Is using a cog on a disc mount a good idea?7. How about using a front mountain bike hub on the rear of a road bike?8. How do I fit a solid axle and spacers?9. How do I fit the cog to my disc hub?10. Which bolts should I buy to secure the cog to the hub?11. Tell me about singlespeed tensioners.12. What is a (chain) half-link?13. How do I know what BCD my chainring is?14. Why do chainrings need different length bolts?15. What is the difference in bottom bracket tapers?16. Any advice on gear ratios and chainring/cog sizes?17. How do I fit bars to quill stems without scratching them?18. Tell me about the various handlebar and stem sizes.
1. Do I have to fit a rear brake?
In most countries two brakes are legally required.

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Orignal From: Fixed Wheel and Single Speed Bicycle FAQ's (part 3)