If you are ordering a frame to replace an existing frame you will need to know your current seat post size, seat clamp size, head tube type, bottom bracket type and drop out size. When ordering a frame and all new parts make sure you do the research to figure out if all the parts you will be ordering will be compatible. If you are not sure the parts you are ordering will be compatible give us a call at 1-888-888-DANS and we will be glad to help you.
Keep in mind this is really personal preference, but as a rule of thumb taller people usually feel more comfortable on a longer top tube while shorter people usually feel more comfortable on a shorter top tube.
This varies between manufacturers but generally top tube is measured from center of the head tube to the center of the seat tube parallel along the center of the top tube.
This varies between manufacturers but as a rule of thumb if the brake mounts are on the chainstays, 36/13 is usually the smallest you can run. There are a few manufacturers that make a frame with chain stay mounts that will take a 25/9 gearing but not many. If the frame has the mounts on the seatstays then you can run gearing as small as you want.
You can use a gyro on a frame with an integrated head tube only if the frame has gyro tabs on the head tube or the head tube is drilled for removable gyro tabs. The lower gyro plates that come with a gyro will not work on a frame with an integrated head tube.
This varies between manufacturers but usually you can find the serial number on one of the following three places, the inside of the rear dropout, the outside of the rear dropout or on the bottom of the bottom bracket shell.
Head Tube, Top Tube, Down Tube, Seat Tube, Bottom Bracket Tube, Chainstays, Seatstays, Brake Mounts and Dropouts.
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