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Framebuilders Thinking about a custom frame? Lugged vs Fillet Brazed. Different Frame materials? Newvex or Pacenti Lugs? why get a custom Road, Mountain, or Track Frame? Got a question about framebuilding? Lets discuss framebuilding at it's finest.

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Old 11-16-10, 10:49 PM
  #101  
hellojoben
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wow. I have so much respect for the framebuilders out there.

If any of you guys are in need of an apprentice and live in Los Angeles let me know!


hhaah
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Old 11-21-10, 07:18 PM
  #102  
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BB30!!

bb30 by stanridgespeed bicycles, on Flickr
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Old 11-22-10, 04:57 AM
  #103  
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Guys have a question, after you guys have brazed, basically each brazing point needs to be put in some like ACID to clean all the impurities off the steel. Some people uses battery acid but doubt thats green at all, what you guys use**********?? There is something non toxic that can be used at home for example?
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Old 11-22-10, 05:28 PM
  #104  
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I use a special solution made up of two parts hydrogen to one part oxygen. It's generally thought to be benign to humans, but in very large quantities it has been linked to numerous human deaths, so caution is justified. I find it especially helpful to use the solution while it is in a relatively excited state, so if you can find a way to add energy to the compound, flux removal will be hastened.

If you're unable to find a source for the compound, hot tap water may work too.

HTH!
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Old 12-06-10, 06:45 PM
  #105  
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650b wheeled path bomber, sloping top tube, 73 parallel, 425mm stays.













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Old 12-06-10, 08:01 PM
  #106  
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Build sequence on Flickr


dec6.10 by stanridgespeed bicycles, on Flickr



dec6.8 by stanridgespeed bicycles, on Flickr

Hey guys im documenting a build for a client. the build starts at DEC3. Any questions? Dont hesitate to ask!
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Old 12-06-10, 08:20 PM
  #107  
Allen
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Adam, may I ask you to start a thread on this build?
Even if it's just a sequence of images. Good stuff.

Cheers,

--A
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Old 12-20-10, 02:04 PM
  #108  
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wow there's some beautiful stuff posted up on here,

here's my fledgling first effort


58cm square
Columbus Zona tubing
brazed with 55% silver rods using using a rothenberger superfire 2 MAPP torch
one coat rattle can black paint job


1 low res by adam.haycroft, on Flickr


2 low res by adam.haycroft, on Flickr


3 low res by adam.haycroft, on Flickr


4 low res by adam.haycroft, on Flickr


5 low res by adam.haycroft, on Flickr
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Old 01-02-11, 06:22 PM
  #109  
bikecopXXX
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ironcroft, that looks pretty nice. how does it ride? did you use a jig?
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Old 01-02-11, 07:37 PM
  #110  
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Man, my second build is turning out to be more error-filled than my first. Of course, I'm doing almost all of the work on my own, but still...

* Need to go back and re-braze 2 bottle bosses because of gaps
* Gap in the top of the seat lug needs to be filled
* Gaps in 2 places on the top head tube lug need to be filled
* Mis-measured when I cut the chainstays, bringing them in to 417mm instead of the originally designed 425mm. Still have clearance, but still.
* Fit the brake bridge with 132.5mm dummy axles in place (I have a jig that fits on the dummy axle to locate the bridge), when the spacing is going to be 135mm. So, it's either put the bridge 2mm or so higher up on the stays, or get another and re-do. Still gives me plenty of brake adjustment, but still...
* Hit one fork blade (1.1mm) with the file the wrong way, leaving a slight divot
* Used too-thin sheet steel (21ga, I think) for my semi-wrap seatstay caps, so they're slightly distorted.
* The double eyelet fork ends didn't fit in the blade raker, so I had to cut one off of each.
* The headtube cable stops kept the frame from fitting properly in my mentors home-built jig, so I had to cut them off.

On the plus side, this is going to be a pretty utilitarian frame for riding to the store and riding around the neighborhood with my kids, so none of these issues are really critical, but still, my first frame went so well that I had some pretty high hopes for number 2. Also, I'm really going to be the only person who's going to notice any of these issues, but still...

Pete
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Old 01-02-11, 07:38 PM
  #111  
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Originally Posted by AllenG View Post
Adam, may I ask you to start a thread on this build?
Even if it's just a sequence of images. Good stuff.

Cheers,

--A
Allen, In the swing of things again after the holiday season! I sure will do it if you'd like. I'm constructing the fork tomorrow.
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Old 01-02-11, 07:44 PM
  #112  
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hey mud! Whats up bud. Don't get discouraged. Why did you drill a hole in the TT above? Heat escape? It may be easier if you drill it in the ST under the lug junction..save a bit of time ya know..
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Old 01-02-11, 07:49 PM
  #113  
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Yeah, it's a vent hole, I'll put a drop of silver on it once I get the cable stops on. Next time around I'll probably drill a small hole in the headtube where it intersects with the top tube, unless the seat tube is a better choice.
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Old 01-14-11, 06:34 PM
  #114  
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THE HIGHSTREET PURSUIT by stanridgespeed bicycles, on Flickr
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Old 01-15-11, 06:52 PM
  #115  
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I'd be afraid that the seat would slide my customer into the steerer tube, possibly catching on one of his facial piercings.
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Old 01-15-11, 07:25 PM
  #116  
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Iím still chuckling a bit from six jours comment,

I love this bike I think you should build a combined stem and aero handle bar for it,

What tube set is this?

Did you have to form the clearance cut-out for the back wheel in the seat tube or do the tubes come like that?
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Old 01-22-11, 08:40 PM
  #117  
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Something a little different...my homebuilt FWD tadpole recumbent trike. On this prototype the front and rear frame sections made out of 4130 cromoly and the center part is aluminum. I did all the fabricating and machining including the internal differential.





Two powdercoats colors and some chrome as well. The next "production" trike will be all aluminum with selected areas for chroming and more!

Dave aka scbvideoboy
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Old 01-22-11, 10:31 PM
  #118  
Allen
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That's seriously impressive.
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Old 01-23-11, 06:33 PM
  #119  
Six jours
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The upper picture makes my brain hurt. And right in the middle of the most complex machine this side of the Large Hadron Collider sits a Super Record derailleur!
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Old 01-23-11, 07:41 PM
  #120  
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Wow, that's awesome. Almost awesome enough to make me consider riding a 'bent. Almost.

Finished frame 2 this week. It was a bit of an experiment in design, I wanted to build a 650b shopping/gravel path bike, but I also wanted to be able to run 700c wheels if I didn't like 650b. Geometry ended up at 73 parallel (though the seat tube looks slacker due to the sloping TT), 45mm rake for something like 56mm trail, 68mm BB drop (frame 1 was 75mm), and 417mm chainstays. They were supposed to be 425mm but I f*cked up. Anyway, pics with wheels and headset installed:

650x42mm:



700x28:



Of course, I'd need to use different brake calipers when I do the wheel swap, but I have the SRAM Apex calipers that came with my new group, and I bought a set of Tektro long reach for use with 650b.

I trimmed the seat tube, shaped the seat lug, and cut the slot over the weekend. I've got some minor cleanup to do with cloth and file, and then it's off to Fresh Frame for a coat of gunmetal grey metallic paint.

Complete album.

Pete
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Old 01-23-11, 11:58 PM
  #121  
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Originally Posted by Six jours View Post
The upper picture makes my brain hurt.
Haha! I bet your brain doesn`t hurt as much as his did while he was trying to sort things out! I semi followed his build on BROL, so I know it was definitely a challenge.

Good job, SCV- I`m glad you finally get to reap the fruits of your efforts!
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Old 01-24-11, 07:28 AM
  #122  
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that's a trick trike, scbvideoboy. does the rear wheel have suspension also? is there a sliding spline somewhere in that drive shaft to handle suspension movement? i couldn't spot it. nice work.
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Old 01-24-11, 07:29 AM
  #123  
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Thanks guys!
And right in the middle of the most complex machine this side of the Large Hadron Collider sits a Super Record derailleur!
Is that a good thing?
The 7 sp freewheel is NOS so I used stuff lying around. The "NEW" trike will have a Shimano cassette freehub mounted on the diff. Looking forward to Dura Ace 8/9 sp setups!

is there a sliding spline somewhere in that drive shaft to handle suspension movement
Under the rubber boot next to freewheel, sliding ball coupler...similar to the inside of a inboard CV joint on a FWD car.

Dave aka Scbvideos
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Old 02-04-11, 02:46 PM
  #124  
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Originally Posted by Six jours View Post
I use a special solution made up of two parts hydrogen to one part oxygen. It's generally thought to be benign to humans, but in very large quantities it has been linked to numerous human deaths, so caution is justified. I find it especially helpful to use the solution while it is in a relatively excited state, so if you can find a way to add energy to the compound, flux removal will be hastened.

If you're unable to find a source for the compound, hot tap water may work too.

HTH!
Yes, DihydrogenMonoxide... Use carefully.
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Old 02-04-11, 06:50 PM
  #125  
Six jours
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Originally Posted by scbvideoboy View Post
Is that a good thing?
As far as I'm concerned, it's a great thing!
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