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bored today. Project P.O.S.F.S (pictures!)

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bored today. Project P.O.S.F.S (pictures!)

Old 08-17-10, 10:46 PM
  #1  
crazzywolfie
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bored today. Project P.O.S.F.S (pictures!)

since i was bored today and my air compressor was hooked up on Friday and then i was given air tools on Sunday i decided to start working on my project bike again. with the use of the die grinder i was able to get the 1/2 inch hole in the frame that i needed for the upper pivot point. now that i have that done i want some opinions on how i should position the bracket on the bottom bracket. i want it to look good when i'm done even though it may never see the trails for safety reasons(i ride my bikes too hard). i think i like the way it is in picture 3 and 4 and don't mind the angle it is on in the first picture. this is the first time i have worked on this bike in about a month because my basement flooded




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Old 08-18-10, 01:26 PM
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Three
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Old 08-20-10, 10:56 PM
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thanks for the response. i was hoping for a bit more input. i tacked it together and took it for a 15 km bike ride and it did not work as good as i thought it should have. i think i might have to start from scratch again or turn this thing into a FS low rider. i will see about trying to get some more pictures.
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Old 08-21-10, 05:45 AM
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What kind of input do you want?

There are other, more suitable DIY forums out there where your project will be more appreciated. This is the MTB forum. I see your project as a Frankenbuild at best and not suitable to serious off road riding due to the cobbled angles, location and design of the swingarm pivot and bell crank pivot. Not to mention the "Girls K-Mart" main frame. I'm not dogging your piece at all...great ingenuity...just not purpose built for the type of riding done by these forum members.

Share your work with the Alt. Bike Culture section of BFnet.
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Old 08-21-10, 07:07 PM
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i was hoping more for opinions on what angle it would look best before i tacked it together. i might attempt taking it trail riding if i can get it all working smoothly. the worst that would happen is i bend the main frame kind of like the last mountain bike that i built. i did not know that was a "Girsl K-Mart" main frame. i only chose it because my triple tree front forks would fit it perfectly like the bike i took them off. i have shared it with the Alt Bike Culture section already. i have too much free time and too many left over bike parts that i want to use.
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Old 08-24-10, 08:49 PM
  #6  
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i got some pictures today after i finished cutting and re-tacking the rear shock mount onto the frame. it seems to ride better now. i think i might be able to do some serious trail riding with it once i finish welding it up. i have been doing some light trail riding and a bit of stunt riding through construction sights and it has been fun. i can even bunny hop curbs completely with it unlike my other bikes that i usually end up smashing the rear rim into the curbs or rocks.

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Old 09-05-10, 06:31 PM
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Hmmm.
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Old 09-05-10, 07:05 PM
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the seat tube above the top tube started to bend. oh well. live and learn. the next frame i try converting to full suspension will have to have a top tube that is just below the top of the seat tube. it was a fun bike to drive while it lasted.
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Old 09-23-10, 01:22 PM
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You might have gotten away with it had the seat post gone further down into the seat tube - below the top tube intersection is a good rule of thumb.

If you had that seat post only a couple inches in, then yeah, there's no way that frame would hold up to any riding.

Many designs with top tubes that low on the seattube have huge gussets to help the thing hold together.
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Old 09-23-10, 01:55 PM
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ya. the seat post was 4 1/2" into the seat tube . i know it needed to be in at least 6" but i didn't think of it at the time. good thing i didn't weld everything solid. i might try finding a better frame to covert to a FS.
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Old 09-23-10, 03:23 PM
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I am liking this project.
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Old 09-23-10, 04:45 PM
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Originally Posted by dminor View Post
I am liking this project.
Me too. That bottom bracket looks SKY high though. Good luck.
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Old 09-23-10, 08:16 PM
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Originally Posted by victim View Post
Me too. That bottom bracket looks SKY high though. Good luck.
Ya, how many inches?
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Old 09-23-10, 08:59 PM
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i know it is over 13 inches but i'm not sure how much more right now. i would guess that it is 15-16 inches from the ground. maybe i will toss some tires back on it tomorrow to measure that.

i also like this project. i had that front half of frame sitting in my basement hoping to use it to make another fun bike. i use to use that bike as a low rider to tow my bike trailer and my redneck rear suspension killed the chain stays. here is what it use to look like.
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Old 09-24-10, 09:12 AM
  #15  
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16 1/4 inches from the bottom of the bottom bracket to the ground.
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Old 09-24-10, 01:28 PM
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Wild! This is fun to watch develop...
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Old 09-24-10, 03:08 PM
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Originally Posted by crazzywolfie View Post
16 1/4 inches from the bottom of the bottom bracket to the ground.
Whoa. You got yourself quite a rock crawler there. Keep at it!
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Old 09-24-10, 05:53 PM
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thanks. i found a second seat post that was identical to the one i currently have on the bike. i cut the bottom off the one seat post and the top of the other seat post just slid in so all i have to do is weld it together and straighten the seat post tube. i am also going to see about adding some more support to the seat post tube even though the seat post will be 10" longer.
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Old 09-24-10, 08:50 PM
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This is the most interesting thread I've seen in a while. There has been no real sarcasm or underhanded insults, & it's still keeping my attention. Fascinating.
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Old 09-25-10, 05:25 AM
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I can really appreciate the ingenuity of this bike build awesome I wish I had someone like you near by as we could go to town on some crazy builds
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Old 09-25-10, 06:28 AM
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Humongous dork disc, collector's item
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Old 09-25-10, 07:25 PM
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Originally Posted by big_al View Post
I can really appreciate the ingenuity of this bike build awesome I wish I had someone like you near by as we could go to town on some crazy builds
building crazy bikes can be fun but can be a bit difficult when working with other. ya it is nice to have someone to bounce idea's off of and to have a second set of hands but it is hard to find someone that moves at a similar speed. i had tried building a bikes with friends at school and it was a cool designs that was always changing and looking better but, it ended up not coming out square and straight because some of my friends just rushed things and did not slow down to listen to me. if i had a well ventilated place to build bikes i would probably build 1 a month.
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Old 09-25-10, 07:34 PM
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for the seat tube, add a small piece of angling tube, like surly has on the new Troll, KM, 1x1, etc

http://www.surlybikes.com/frames/
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Old 09-25-10, 08:31 PM
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i don't think a small piece of angling tube would help that much. i was thinking about building a bracket that raps around the seat post tube and is secured to the top tube. i had also thought about adding another top tube.
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Old 09-25-10, 09:51 PM
  #25  
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short wheelbase, steep head angle, sky high bottom bracket. that has to ride...interestingly.

have fun, and be careful. no offense, i'd not be subjecting or trusting that bike to much abuse.
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