Today's car boot bargain

[Smokin Joe]

Your screen must have more definition than mine cos I cant make out the rear drop out direction.

Easy to tell, with horizontal the wheel skewer will be positioned below the chain stay rather than directly behind it.

 

[goody]

Doesn't stop you using it as SS. Google 'single speed with vertical drop outs ' there's a few options.

 

[russ.will]

'Scuse my ignorance, but why can'f a SS have vertical dropouts?

Russell

 

[alecstilleyedye]

'Scuse my ignorance, but why can'f a SS have vertical dropouts?

Russell

i think you can, but a chain tensioned is needed…

 

[russ.will]

This is what I'm trying to figure. I put some monster forces through my rear cassette and it doesn't budge, so if I just take the derailleur off and shorten the chain, what's changed? This is obviously hypothetical, because there isn't a cat in hell's chance I would do this!

Russell

 

[biggs682]

Car boot trawling is great fun , i have been quite lucky but often go months at a time with no finds then 2 or 3 in one go so just got to stick at it

 

[Twizit]

This is what I'm trying to figure. I put some monster forces through my rear cassette and it doesn't budge, so if I just take the derailleur off and shorten the chain, what's changed? This is obviously hypothetical, because there isn't a cat in hell's chance I would do this!

Russell

If your rear dropouts are vertical, with a SS you've got no means of keeping the chain at exactly the right length / tension, so it will be bouncing around as likely slightly too long to be able to join a full link. Chain tensioner easily sorts this.

 

[MichaelW2]

The whole point of singlespeed is to simplify the transmission. If you still need a pulley tensioner, why not stick with a rear derailleur.
There are some chainring and sprocket combos which, with the right chainstay length, provide sufficient chain tension with non adjustable dropouts. Horizontal dropouts or rear facing track-ends allow you to select the gear you like and can account for chain wear.