The inside diameter of my seat post hole measures 28 mm. The closest sizes I see on this product are 27.2 and 29.2. Should I go larger or smaller?
447060
In my opinion you need to make sure you get the exact size you need, I don't know what you used to measure but you should try to look up your bike on a sight such as bike-pedia that will give you the exact sizes and stats. for your bike. That being said 27.2 is one of if not the most used seat post sizes along with 25.4 so that might be what you need, but seat post sizes are in increments of 2mm and if you do not buy the correct size it is more trouble than taking the time to get it exact.
447061
Don't guess what size you need. Worst case, you could destroy your frame by trying to insert a post that is 1 mm too large. Take out the old post (hopefully you have it.) Most seatpost shave the size stamped on them. If the numbers are hard to read, try shining a flashlight on from the side. If your post is not marked for size, use a vernier caliper to measure the size of the post, not the interior of the frame seat tube. This is an inexpensive tool that is helpful for many bicycle applications. I have one in my bike tool box.
447062
27.2. There is expected to be a slight amount of play so that the post can slide in and out, but one mm too large will never fit. Note: this post doesn't have a seatpost collar, you have to buy that separately.
577799
I believe my seat tube is 7/8" and it fit perfect as I believe that is standard size. It may fit slightly smaller or larger.
1235275
I'm pretty sure that most seat posts are a standard size especially if you have a beach cruiser. I just took my old one off and put this one on my old beat up beach cruiser.
1446740
I believe my posts are 3" as well. I used a rim of duct tape (torn to 1/2 the width) to widen the top of the post so these would fit tight. I did not drill holes in the posts , knowing I will replace these in 5 to 10 yrs. Hope that helps.
305777
nickels55, Thank you for your interest in Silverback! The recommended size for your hole is 36" deep and a 16"-20" diameter. However, the goal also requires a 18" minimum rear clearance for the actuator. For the best understanding of the size and dimensions, please view the product manual, provided below: http://www.escaladesports.com/manual/silverback/B5402W-B5402F_2L719800.pdfHope this helps! Silverback
2280728
I'm not sure about the size of your seat but the 14 by 14 size is down the middle and the wide part near the back. Mine is a little small for my seat but works great
59297
First, Zaha, you need a conversion kit with a standard post. This is available at: Bicycle Seats - Dovetail Dist. 1409 Monarch LN. P.O. Box 305 Rexford MT 59930. SKU_ BSCIM-UNI-3-KIT. I also bought the seat there: BSJB-49233. I then bought a gel saddle pad at: www.serfas.com. This all made the seat tolerable.
1260439
Not sure what your height has to do with it. I'd say it's more the diameter of the posterior. The hole might actually be smaller than a normal seat -- I measure it at 11.5 x 7.5".
1692672
It fits fine on my seat stay. The diameter of mine is 26.8mm and it stays in place.
1619407
Please measure yr in-seam length, multiply that with .67, that should be the frame size, however personal feel also matters, Thanks, (say for a in-seam of 32 inches, it is 32X .67 = 21. 5 inches = 54.5 centimetrs). The rest can be adjusted by extension of the saddle tube,
1300772
I just don't know. I bet though if you reach out to the manufacturer, maybe they can detail your issue with some pics you provide? I don't recall ever needing extra for my traditional seat post, but just email them.
744084
Most seatposts are 350mm in length, but some longer ones are available, at lengths up to 400mm. You should be careful with longer seatposts, however, as they can stress the frame and possibly cause it to crack.
1683815
I purchased the 25.4 MM ( 1 inch) diameter seatpost for an older 1970s model Raleigh bike. The diamondback probably uses the larger seatpost. However, I would measure to make sure.
225443
I'm also 5'9" and wear a 31-32" in seam...I bought the 29" with 17" seat post and it fits me beyond perfectly...I would highly recommend spending some money on a new seat and pedals...
265892
I have a similar bike (kid's bike from the 50s) and had to do some rigging. My seatpost is also not a standard size so I bought a 1/2" U bolt and used the flat metal piece with the 2 holes to attach to my seatpost. They send a lot of pieces so you should be able to get it to work. Since every bike is different, it's not really a one size fits all but, they do try to accommodate everyone with what they send. If you're not really mechanically minded I would ask a friend who is to give you a hand.
2259572
Once wrapped around the seat stem, which is already at a 14-18 degree angle, or 'slant,' the seat extend well over it. It protrudes 2/3-4" inches from the center of my Campagnolo Titanium seat post. Exactly. My post is 1" in diameter. I hope this helps.
352184
As far as I know it's designed to fit a bike frame with a 300mm hole for the seat post to fit into, so the seat post must be 300mm. The other end fit into the seat bracket that is adjustable...the bike frame socket is not.