2

I found that dropouts are needed for derailleur setup & fork space>120mm...can I install any hanger or weld a dropout to the frame?...and also the fork end gap was around 105mm in wheel fitted condition.Can I equip 5 or 6 speed gear set in my mtb? if yes can I also mount disc brake?rear fork end of dirtrider

rear hubrear fork enddirtrider 26" frame

  • The derailleur setup would probably cost more than your current bike... I advice to at least consider to sell this bike a buy another one, more suitable to your need. – Klaster_1 May 26 '18 at 6:46
  • Hercules is an Indian BSO brand. Its not worth spending a lot of money on a BSO bike. The frame does not have a caliper mount point and trying to add one is pain. Your wheel's hub is not disk ready so won't hold a rotor. Honestly, it would be cheaper to buy a better bike and use this one for shopping. – Criggie May 26 '18 at 8:20
  • The moment you say "weld" you're getting into some pretty complicated and expensive territory. – Daniel R Hicks May 26 '18 at 11:40
4

The derailer is sort of the easy part. Your frame could take a claw style derailer like this:

Xundah

Or you get one of these and have a lot more options:

Sunrace

120mm is the minimum rear spacing for derailer multi-speed rear hubs, so you would probably need to spread (bend) the frame.

You'll also need a new rear wheel, chain, and freewheel. Your cranks will probably not give workable chainline with a multispeed freewheel as they are now, which usually means toying with the BB spindle length, which is a pain on cottered cranks, and would probably also have you either removing the chain guard or finding a way of spacing it out.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.