Where's the derailleur on a 3-speed roadster? One SA trigger shifter gear cable, one chainring, one rear sprocket, one of my freewheels has lasted 45 years so far, and so in all probability has the chain.
Whilst I do admire the mechanical simplicity and weight-saving potential of a single speed, they don't have a monopoly on mechanical reliability and longevity.
Nowhere, I had forgotten the absence of a derailleur in a 3 speed case. Back in 198x, I had a 3-speed first bike and now that you say it, I remember.
For not wanting freewheel I have 1 reason causing 2 problems, they're not well, or not at all, sealed, water slips in,
1) sudden downpour > sudden freewheeling in forward direction > there you are in middle of nowhere with a bike that is as usable as without chain, needing a hairdryer or so.
2) winter, near evening, starts to freeze again > same story.
You probably already know what happened (freewheel working principle, pallets, springs, sticky fat when wet, springs unable to pull pallets back).
In my 2x7 gears - period things went like this:
- New bike, or a replace all
- A couple weeks riding > unable to switch to gears 7,6.
- 1 month > unable to switch to gear 6,5.
- 2 months > unable to switch to 4.
- 3 months > unable to switch to 3.
- 6 months > 2 and 1 worn
- replace all, when new bike waiting 1 week, then 3 weeks, then 3 months and finally even 6 months, in meantime second bike sitting at end of aboves story too.
- and this story 6 bikes 3 dealers involved, so it's not that I didn't try.
After a decade or so I decided it was enough.
None of those 3 dealers willing to build me a singlespeed (which I coincidently had read about on the www, didn't even know those still existed), reasons being given as no time, no parts and no frame in my size.
I had to find a 4th to get it done.
In my singlespeed period, things went like this:
I had bought 2 bikes but (ofcourse...) that 4th dealer didn't mount a 1/8" drivetrain (I then didn't know those existed and wasn't told either), and my chosen gear of 52/16 quickly ate up the freewheel - sprocket, and above mentioned freewheel problem also became a pest. That 4th dealer told me that I could try a special 'piste' freewheel, that would have a multiplied number of pallets/springs, which would solve the problem. Their price was 4 times the price of the previous, and they didn't solve the problem at all, nothing changed.
And then, I went for fixed gear, and shortly later discovered (thank you internet) the existence of a 1/8" rear cog, and not much later also a 1/8" chainring, and could convince the 4th dealer to convert both bikes.
Never regretted. The only (drivetrain related) problem I had was that the rear pads fret out due to the many losenings for chain tensioning, which was solved by roundels (otherwise the frame-read bike would have been lost).
And with my latest bike, the last problem was solved by a bottom bracket eccenter. Plus a cog mounted with 6 bolts with allen key heads. And very important, it became an option to do things myself, and I did. This latest bike was a shame in its delivery state (see my other posts), but in the end I managed to fix these all myself.
So forgive me my fixed gear enthousiasm, it's just that it allowed me do-it-yourself, independency, freedom.