Would any of these frames make a decent "affordable" SS?
 

http://tinyurl.com/m6jwoj

http://tinyurl.com/nthgt8

http://tinyurl.com/lfrrbl


if not any recommendations?

all of those frames have vertical drop outs. Although not ideal for ss applications, it can be done by using a chain tensioner, eccentric hub, or a magic gear.


These frames might be better:
http://bikeisland.com/cgi-bin/BKTK_S...ls&ProdID=1277
http://bikeisland.com/cgi-bin/BKTK_S...ls&ProdID=1084

Do you know exactly what you'd like to do? Unless you have a lot of parts sitting around building up from the frame will be more expensive. You may want to look into complete bikes if "affordable" is one of your goals.

hmmm what if I get this

http://cgi.ebay.com/ws/eBayISAPI.dll...m=360163521566

and get a fork with horizontal drops?

not fork. rear horizontal drops.

use the magic gear calculator.