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View Full Version : Built, Not Bought - 10'' Pull Downs



americancyclechad
01-03-2013, 1:48 PM
We spent a few hours this morning fine tuning our 10'' pull down bars. They're the same bars you'll see on the '96 Sportster Build here at American Cycle.
Here's a few pictures of what we got up to this morning

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1163_zps1d1bc083.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1163_zps1d1bc083.jpg" border="0" alt="Photobucket"/></a>

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1082_zpsc604dd48.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1082_zpsc604dd48.jpg" border="0" alt="Photobucket"/></a>
304 stainless steel, 1'' O.D. 0.120'' wall
<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1085_zps2ebcf6fa.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1085_zps2ebcf6fa.jpg" border="0" alt="Photobucket"/></a>
2x 10'' uprights coped at 1'' solid 304 stainless inserts tapped 1/2'' 13tps

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1111_zps7319bae4.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1111_zps7319bae4.jpg" border="0" alt="Photobucket"/></a>

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1140_zps31e95769.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1140_zps31e95769.jpg" border="0" alt="Photobucket"/></a>
Welded

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1174_zpsbb5091ba.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1174_zpsbb5091ba.jpg" border="0" alt="Photobucket"/></a>
Stress relieving

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1178_zpsbcfdb839.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1178_zpsbcfdb839.jpg" border="0" alt="Photobucket"/></a>
Cooling

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1180_zpsc052c673.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1180_zpsc052c673.jpg" border="0" alt="Photobucket"/></a>

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1186_zps215438d2.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1186_zps215438d2.jpg" border="0" alt="Photobucket"/></a>

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1188_zpsf086a995.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1188_zpsf086a995.jpg" border="0" alt="Photobucket"/></a>
We'll cut to fit once we decide on hand controls. These bars will be available to buy in the near future. For now you can follow the '96 Sportster build at http://www.chopcult.com/forum/showthread.php?t=25963
and on instagram @american_cycle

TS
01-03-2013, 2:38 PM
Those came out great man, nice work!

Also, that knuckle tattoo awesome!

americancyclechad
01-03-2013, 4:24 PM
Those came out great man, nice work!

Also, that knuckle tattoo awesome!

Thanks man, it's always great to hear positive feedback. I can't wait to narrow the bars, I think that'll really set them off

me
01-03-2013, 9:13 PM
can you talk to me about that "stress relieving" ? whats the idea behind that?

Quality is awesome man...and I'm enoying watching your build...some steller work and craftsmanship!

TS
01-04-2013, 12:48 AM
Thanks man, it's always great to hear positive feedback. I can't wait to narrow the bars, I think that'll really set them off

I agree once you narrow the bars they'll fit hte bike perfectly. Where you had your hands in the last shot is a good spot to cut them as long as you're not running bulky controls.

Bullneck
01-04-2013, 7:05 AM
can you talk to me about that "stress relieving" ? whats the idea behind that?

Quality is awesome man...and I'm enoying watching your build...some steller work and craftsmanship!

These bars, and all the bars I make, are done in 304 stainless steel. I use 304 because it, as well as all 300 series stainless is considered non-hardenable, this is important for stress relieving, and failure due to cracking.

After these bars are assembled, welded and allowed to cool, they have a natural tendency to pull and set in an awkward angle. It's almost like the steel is chasing the heat. If I removed them from the fixture at this point they would line up crappy when I went to install them. So what I do is heat them with a oxy/acet torch and let them slowly cool in the fixture again. Yes it's an extra step and a pain in the ass when you want to see the product mounted on what your working on, but I really like knowing that the finished product will bolt nice and easy to the bike.

Hope that answers your question
Lee

me
01-04-2013, 11:20 AM
^^^^ Yeah is sure did! Thanks for the shop lesson! ^^^^

sohcool
01-04-2013, 11:52 AM
These bars, and all the bars I make, are done in 304 stainless steel. I use 304 because it, as well as all 300 series stainless is considered non-hardenable, this is important for stress relieving, and failure due to cracking.

After these bars are assembled, welded and allowed to cool, they have a natural tendency to pull and set in an awkward angle. It's almost like the steel is chasing the heat. If I removed them from the fixture at this point they would line up crappy when I went to install them. So what I do is heat them with a oxy/acet torch and let them slowly cool in the fixture again. Yes it's an extra step and a pain in the ass when you want to see the product mounted on what your working on, but I really like knowing that the finished product will bolt nice and easy to the bike.

Hope that answers your question
Lee

What filler are you using? Are you getting hot cracks or are you somehow getting cracks after cooling?

Bullneck
01-04-2013, 2:50 PM
No I'm good... No hot cracks and no breaks after cooling. As I'm sure you know by your line of question, austenitic stainless steel can be finicky when TIG welded, distortion is a common problem even with careful technique. I just prefer to heat the joints evenly and let them "relax" in the fixture. That way with vibration over time the stress of being forced into an unnatural position won't cause cracking. I use ER308 rod with 304 stainless.

sohcool
01-04-2013, 5:22 PM
No I'm good... No hot cracks and no breaks after cooling. As I'm sure you know by your line of question, austenitic stainless steel can be finicky when TIG welded, distortion is a common problem even with careful technique. I just prefer to heat the joints evenly and let them "relax" in the fixture. That way with vibration over time the stress of being forced into an unnatural position won't cause cracking. I use ER308 rod with 304 stainless.

Ah, good call. Yeah, stainless is squirrelly. Awful at dissipating heat, so it REALLY BUCKLES at the haz.

Just need a bfh! Haha

americancyclechad
01-10-2013, 11:42 AM
Lee put these bars together this morning. They're for Rob's 53 Pan http://www.chopcult.com/forum/showthread.php?t=8406

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1207_zps7bbf3f5c.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1207_zps7bbf3f5c.jpg" border="0" alt="Photobucket"/></a>
The initial welds

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1214_zpsa7949a3a.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1214_zpsa7949a3a.jpg" border="0" alt="Photobucket"/></a>

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Feels nice

<a href="http://s1293.beta.photobucket.com/user/americancyclechad/media/IMG_1223_zps7eed6142.jpg.html" target="_blank"><img src="http://i1293.photobucket.com/albums/b594/americancyclechad/IMG_1223_zps7eed6142.jpg" border="0" alt="Photobucket"/></a>
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This is the finish product. Want a set for yourself? get a hold of us through here and we'd be glad to fab some up for you. You can also check us out on instagram @american_cycle for more updates

SouthBayBobber
01-10-2013, 11:44 AM
NICE WORK MAN! Super clean