Re: acetylene vs propane Harris torches?
Coming very late to this thread and yes, know I'm replying to an 8yo post, but I am an excellent example of the student(s) Doug described here:
Quote:
Originally Posted by
Doug Fattic
The majority of my framebuilding class students struggle in the beginning with their brazing motions. Some are not naturally gifted with coordination.
Maybe that's why I now ride a bike instead of playing ball sports. Riding a bike requires much less coordination. ;)
I finished Doug's class recently. I could sorta do the big stuff, but Doug did all the fine work. I have a nearly complete brazing setup, just lacking an oxygen source, so hopefully I will be able to start practice melting metal again soon. (Why doesn't Facebook do a better job of notifying sellers that they have a fish on the line???)
https://lh3.googleusercontent.com/tK...Hd9ZpD9zI=w800
I'm in the midst of switching from Flickr to Google Photos. Please let me know if the above image doesn't display.
Re: acetylene vs propane Harris torches?
Quote:
Originally Posted by
smontanaro
Coming very late to this thread and yes, know I'm replying to an 8yo post, but I am an excellent example of the student(s) Doug described here:
Maybe that's why I now ride a bike instead of playing ball sports. Riding a bike requires much less coordination. ;)
I finished Doug's class recently. I could sorta do the big stuff, but Doug did all the fine work. I have a nearly complete brazing setup, just lacking an oxygen source, so hopefully I will be able to start practice melting metal again soon. (Why doesn't Facebook do a better job of notifying sellers that they have a fish on the line???)
https://lh3.googleusercontent.com/tK...Hd9ZpD9zI=w800
I'm in the midst of switching from Flickr to Google Photos. Please let me know if the above image doesn't display.
Looks good. Got a coupla questions...
Is all the brazing done? You planning on painting it and what color?
Have you ridden it yet and if yes, how's it ride.
I built the bike that I've been riding about a year now and want to tell you that no matter how much you enjoy riding now it's gonna pale compared to riding a bike that you built yourself.
Re: acetylene vs propane Harris torches?
Quote:
Originally Posted by
TonyP
Looks good. Got a coupla questions...
Is all the brazing done? You planning on painting it and what color?
Have you ridden it yet and if yes, how's it ride.
I built the bike that I've been riding about a year now and want to tell you that no matter how much you enjoy riding now it's gonna pale compared to riding a bike that you built yourself.
Tony,
Yes, the brazing is all finished. I've not yet ridden it. I have one more thing to do – drill and tap for the cable guide (hopefully today or tomorrow) – before I can ride it on rollers (still too much salt on the ground here to ride a nekked bike outside).
As for paint, Doug and I discussed it ever-so-briefly during the class, but I've not yet decided exactly what I'll do yet. I'm leaning toward blue (that covers a lot of ground ;)). My family name (Montanaro) has yielded two nicknames (Monty – my dad, and Monte – my son, Chris). I'm thinking of maybe "MONTI Special" in Masi-like fonts. ¯\_(ツ)_/¯
Re: acetylene vs propane Harris torches?
Quote:
Originally Posted by
smontanaro
I've not yet ridden it.
Still not finished, but I did manage to get it up on rollers today with the rear derailleur connected (no brakes, no front derailleur). Another small milestone reached...
Re: acetylene vs propane Harris torches?
Quote:
Originally Posted by
smontanaro
Still not finished, but I did manage to get it up on rollers today with the rear derailleur connected (no brakes, no front derailleur). Another small milestone reached...
Skip, when I got mine built I gave it a coat of Harbor Freight primer and that got me thru half the summer before the primer started failing. At that point tho I had to strip it all down and re-prime before painting.
Re: acetylene vs propane Harris torches?
Quote:
Originally Posted by
smontanaro
Still not finished, but I did manage to get it up on rollers today with the rear derailleur connected (no brakes, no front derailleur). Another small milestone reached...
Back from Franklin Frame:
https://lh3.googleusercontent.com/6x...WeRzT43rE=w600
Re: acetylene vs propane Harris torches?
What type of cantilever brakes mount that close to the fork crown?
Quote:
Originally Posted by
smontanaro
Re: acetylene vs propane Harris torches?
Quote:
Originally Posted by
e-RICHIE
What type of cantilever brakes mount that close to the fork crown?
He might be using Paul Racer M’s…
https://www.paulcomp.com/shop/compon.../racer-medium/
Re: acetylene vs propane Harris torches?
Quote:
Originally Posted by
rwsaunders
i assumed those types would use direct mounted studs rather than cantilevers.
Re: acetylene vs propane Harris torches?
Quote:
Originally Posted by
e-RICHIE
i assumed those types would use direct mounted studs rather than cantilevers.
I just looked at his mock-up photos and they look like Mafac brakes. I checked the blow-up diagram on the Paul link and they look like the brakes use standard cantilever studs, but I don’t profess to be an expert.
Re: acetylene vs propane Harris torches?
Quote:
Originally Posted by
rwsaunders
I just looked at his mock-up photos and they look like Mafac brakes. I checked the blow-up diagram on the Paul link and they look like the brakes use standard cantilever studs, but I don’t profess to be an expert.
Those look to be Mafac, and I seem to remember reading a post of his somewhere that he states that, tho I don't remember if they are Raids or Competition/Racers.
As far as the posts, they're close, but different enough that canti posts may be doctored enough to work, or not.
Re: acetylene vs propane Harris torches?
Skip made this frame in my class. The brakes he chose were Mafac Raids modified by Amir in Israel. The brake posts are from Rene Horse specifically made for Rene Horse centerpull brakes that are a supped up copy of Raids. Those posts are exactly where they should be. Everything was mocked up on the fork for their placement regarding width and height (with a wheel, brakes, fenders, front rack) and then the posts were machined mitered on my Bridgeport to place them where they needed to be brazed. This placement includes where on the slots the brake pads are located. Skip wisely assembled his frame into a bike to ride it to make sure there were no mistakes (like forgetting a braze-on) before having it painted. This picture is an illustration that centerpull brake posts sit much higher than cantilever posts.
Re: acetylene vs propane Harris torches?
Thanks all for the comments and kudos. Doug responded about my brake posts much more robustly than I would have. I did, indeed, build the frame up and ride it a couple times before sending it off for paint. According to Strava, I've ridden it 67 miles at this point. I was quite happy with everything, especially the brakes. Now to bring the thread back on-topic...
The day I picked up the frame was a looong day. I drove from Maumee, OH (where I'd dropped my wife to meet a friend for a road trip not involving bikes–what were they thinking?) to Jack Trumbull's place to pick up the frame, then headed back toward Chicago. The last absolutely required piece of my brazing setup was an oxygen concentrator. I had been disappointed with the prices I'd been seeing in the Chicago listings, typically $350-$500 or so for a used DeVilbiss 525, so I just kept watching. I found one or two in the Columbus and Indianapolis areas which had much more reasonable prices, so figured I'd stop and grab one on the way home. Lo and behold, as I'm continuing to scan Chicago area CL listings, I see a DeVilbiss 515 for $50! I got in touch with the seller and gave him my phone number, saying I was on my way back from Ohio, but that I'd pick it up before heading home. I swung by his place, but only had twenties. "Do you have a ten?" I asked. "Nah, $40 is good enough." Shazam! And it has less than 11,000 hours on the clock. The last inspection sticker was dated 2008, so it's probably been tucked away awaiting its second act for a long time.
A few days ago I hooked everything up, but without any firsthand knowledge of regulator setup and operation (and no instructions), I was hesitant to mess around too long trying to get it started. With the help of a YouTube video and a bit of virtual office hours help from Doug, I was confident to make a second try. I believe I invented fire today (any chance I could patent it?). I did this outside where the bbq was sitting, so the flame is a bit hard to see. Still, I was happy with the result.
https://lh3.googleusercontent.com/pw...2NsTyoCa9=w600
I went no further than that. The next steps are to get some scraps to practice on and some brazing rod and flux. (I might start with brass just because it will be a cheaper waste of metal.) As Doug has stated repeatedly, results for beginners like myself will be much better with those skinny black hoses. I'll put those on my shopping list as well. Having no brazing experience without them, it was pretty obvious when I held the torch how much more effort was required to position and move the torch with the usual red/green hoses.
Re: acetylene vs propane Harris torches?
Quote:
Originally Posted by
smontanaro
Thanks all for the comments and kudos. Doug responded about my brake posts much more robustly than I would have. I did, indeed, build the frame up and ride it a couple times before sending it off for paint. According to Strava, I've ridden it 67 miles at this point. I was quite happy with everything, especially the brakes. Now to bring the thread back on-topic...
The day I picked up the frame was a looong day. I drove from Maumee, OH (where I'd dropped my wife to meet a friend for a road trip not involving bikes–what were they thinking?) to Jack Trumbull's place to pick up the frame, then headed back toward Chicago. The last absolutely required piece of my brazing setup was an oxygen concentrator. I had been disappointed with the prices I'd been seeing in the Chicago listings, typically $350-$500 or so for a used DeVilbiss 525, so I just kept watching. I found one or two in the Columbus and Indianapolis areas which had much more reasonable prices, so figured I'd stop and grab one on the way home. Lo and behold, as I'm continuing to scan Chicago area CL listings, I see a DeVilbiss 515 for $50! I got in touch with the seller and gave him my phone number, saying I was on my way back from Ohio, but that I'd pick it up before heading home. I swung by his place, but only had twenties. "Do you have a ten?" I asked. "Nah, $40 is good enough." Shazam! And it has less than 11,000 hours on the clock. The last inspection sticker was dated 2008, so it's probably been tucked away awaiting its second act for a long time.
A few days ago I hooked everything up, but without any firsthand knowledge of regulator setup and operation (and no instructions), I was hesitant to mess around too long trying to get it started. With the help of a YouTube video and a bit of virtual office hours help from Doug, I was confident to make a second try. I believe I invented fire today (any chance I could patent it?). I did this outside where the bbq was sitting, so the flame is a bit hard to see. Still, I was happy with the result.
https://lh3.googleusercontent.com/pw...2NsTyoCa9=w600
I went no further than that. The next steps are to get some scraps to practice on and some brazing rod and flux. (I might start with brass just because it will be a cheaper waste of metal.) As Doug has stated repeatedly, results for beginners like myself will be much better with those skinny black hoses. I'll put those on my shopping list as well. Having no brazing experience without them, it was pretty obvious when I held the torch how much more effort was required to position and move the torch with the usual red/green hoses.
Here's where I found mine.
https://www.tinmantech.com/products/...welding-hoses/