Seat post clamps are commonly found built in, or “Integrated” with BMX frames, eliminating the need for a separate clamp. It’s made in Germany, and since it’s so small it can be stuffed inside a seat tube, it just seems like pure e-bike porn. Typically there are two metallic rails on the saddle and a clamping mechanism on the top of the seat post. Not many bikes would have such poor tolerances that a seatpost would just slip into the frame without some pushing. The thing just fell right into the frame. Thanks, Hybroid. Is that what it is? Details below. Recommended Communities. Sorry I didn't respond to your messages. If you did leave some adhesive on the frame of the bike, stop, clean up and start all over. If it fell down inside you shouldn't have a problem getting it out. I was considering the bike shop option if I couldn't get it out. The unique clamp design found on Bontrager seatposts sets them apart from the competition in both functionality and performance. Seatpost length is measured in millimeters. I thought of just undoing the entire thing to make it a single, long piece of wire with a hook on the end. If fitting any battery onto your favorite frame is difficult, you could put one Mighty Mini in an under-seat toolbag, and a second Mighty Mini in a backpack. This means that the seat post outer diameter needs to be very close to the inner diameter of the frame's seat tube. Well there was that ‘pedals are stuck’ thread on rotorburn that went for dozens of pages. A seatpost shim is a hollow aluminium ring that allows to use a specific-diameter seatpost in a frame that is nominally too big for it. The majority of saddles are compatible with the most of seat posts. • Separate post explains the maximum amount of seatpost extension from the frame (minimal insertion length). And i accidentally put the seatpost in the seat tube. The diameter of the seatpost is measured in millimeters. That’s because along with your tyres, seatposts actually make up the bulk of your bike’s comfort – in fact, according to the data available, a well-designed carbon seatpost flexes at a rate 100x greater than a steel frame.. • Sizing: The most important dimension to consider is diameter, as it must correspond to the internal diameter of your seat tube in order to have a snug fit. . If it fell down inside you shouldn't have a problem getting it out. Yeah. Both of these conditions must be fulfilled.If, for example, lowest part of the top tube weld ends 50 mm below the seat tube top, inserting seatpost 25 mm below it won’t fulfill the requirement b) – of minimum 90 mm total insertion depth (seat post would be inserted 50 + 25 mm – so only 75 mm). The seatpost diameter must match to the seat tube diamater of your frame. Racing Bike. A post that fits a frame well slides smoothly into the seat tube of the frame without any lateral play (side to side movement). I'm sure you aren't the first person who has done this. This means that the seat post outer diameter needs to be very close to the inner diameter of the frame's seat tube. You don't want a u shape you want something that looks like a check mark. If filing your frame makes you feel uneasy, take it to a shop. When no-one was looking, of course. I ended up yanking the top and bottom away from each other, and made a hook out of that. 2. HELP! ... Wrenching Bikes, Frames and Forks Wheels and Tires. If purchased from a bike shop take it back to them and see if they can help. Frames made to British or Italian standards will typically have 1 1/8" (28.6 mm) seat tubes.Older French bicycles used 28 mm. While twisting the frame with seat post in vice the seat post snapped. That’s probably what is scratching the seat post. It was too rigid to spring back, so I shoved a stick in there with it to wedge the hook at the end of the… swage? I was so stupid. • $175.00. Once the glue has set, spray a whole lot of lubricant between the seat post and frame. Have used a heavier 227g 350mm carbon seat post but prefer the compliance this post gives. Extremely reasonable prices for what we … Push the wire down through the seat post, and when the little hook goes past the swaged-down neck of the post, it will spring back and grab the inside of the post - Pull up, and Bob's-yer-uncle. It's a light weight 400mm xc seat post @180g. The seat post attaches to the seat rails by means of a clamp Seat lug : a frame lug on the top of a bike’s seat tube serving as a point of attachment for a clamp to secure the seat post Seat tube : the roughly vertical tube in a bicycle frame running from the seat to the … 3. Got it out though! If you can find a long enough dry wall type toggle bolt you maybe able to stick it into the seat post and than expand it enough to get grip. Minimum seatpost insertion depth.

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