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small screws on horizontal dropout(3 posts)

small screws on horizontal dropoutmattcrout
May 5, 2003 10:51 AM
i also posted this on the Retro forum. What are these for? i've made my '83 trek into a SS but i would be able to have more choices of cogs in the back without taking links out of the chain (I don't want a tensioner) but the screws limit the amount of room the axle can go back, even if they are screwed all the way towards the back. Are they needed? Thanks!
re: small screws on horizontal dropoutceleste
May 5, 2003 5:28 PM
I am not the expert, but I have the same thing on my bianchi frame. The spring is on the inside of the dropout, so that only a small ammount of adjustment is given. From playing with it a little, it was probably to make adjustments to compensate small variation in frame build. ( so that you could adjust it to have an aligned tire. again I am probably wrong but it is a good guess. I took the screws out and put the spring on the outside of the dropout, so that I had more than an inch of adjustment.

re: small screws on horizontal dropoutukiahb
May 5, 2003 8:18 PM
You don't need them on a fixie/ss...the purpose of the screws is to make the wheel line up correctly on a geared bike, but they won't help w/ that on a fixie/ss since you also have to get the chain tension right. I removed them entirely on my frame and it is easier to install the rear wheel and tension the chain now. However, it is good to have a frame that was originally equipped w/ the screws as the dropouts were often made longer to accomodate them....