These are my favorites series here in YT. Thank you Pithy Bikes for sharing the process to us. I'm about to starting my fist frame build and you are helping a lot. I also have a lot of questions about welding and frame building in itself, that for you guys it might be simple. I would love to receive some help and advice to my first project.
Weler Martins I get a lot of inquiries about this same topic. I’ll put together a guide on my website. But in the meantime, feel free to contact me directly. Pithybikes.com
Hey bud, just a quick tip for your wheel building. Your very first drive side spoke should go to the right hand side of the valve hole, not the left. If you build it to the left like you did here, you end up with a valve that’s difficult to access because it’s in the middle of a group of 4 spokes crossing each other. Build it to the right of the valve hole and you have a very easy to access valve. Makes a big difference. Not trying to troll, just helpful info. Thanks for the continued work you put into these videos. C
@@PithyBikes You also should build it so that when you look down through the spoke hole you can see the brand name on the hub :) Of course this makes no difference really but it's just one of those things and actually it's quite helpful to keep things in the right orientation. Otherwise after putting in the first 1/4 of the spokes you can end up scooching it all the wrong way and then the valve hole ends up in the wrong place.
Another well-made and inspiring video. Wonder if you have ever used step drills for the BB holes? I have tons of drills but often they are just the ticket to save time on non precision holes. Love your craftsmanship, video quality, and clear explanation!
The thing I'm sure you have discovered about smaller wheels is lacing is harder (without Bending the spokes too much) But tensioning and trueing is a lot easier.
Wildman Tech I go larger if I can in case debris works it’s way inside the tube. Easier to shake out. But some do it for Wright savings too which I’m not really concerned with for this build.
What’s the purpose of the holes in the bottom bracket? Couldn’t the first center drill puncture be sufficient? Maybe there is an advantage with larger holes, but I’m not sure. Thanks
Joel L yep first drill is prob for fine. Holes are mainly for ventilation to prevent condensation. I like larger holes in case debri gets in tube. Easier to shake out
Pithy Bikes - I see. That makes sense. Living in the dry southwest desert all my life, I never see much condensation on any thing except maybe the A/C coils in late summer..... lol. I had assumed the holes were so you could ensure shielding gas coverage during welding.
I want to fillet braze a 650b gravel/touring bike, around a rodeo labs spork. why fillet braze you ask? because Tom Ritchey is my hero and because i think it'll be cheaper..maybe I think i have enough brass clothes hangars in my closet to cover the joints for a frame lol. My only hurdles. Bending stays is a big queston mark, the money for a jig/tools/supplies and the space to do it(i live in a small apartment). all i have is dreams and curiosity.
@@antoinedoinell Yeah i agree that bendind stays is difficult. People say that brazing/welding process make a huge smell, so you'd have to find some place to install your shop, not just because of it but also to set all the tools. I don't even have a welding machine but i'm looking for one that at least weld aluminium. Bicycle frame Jig? I'm years away from it. Thinking about getting some flat surface to set all the tubes, by the help of gravity. Of course i don't have a drill station, so every tube conjunction will have to be made by hands and a normal saw. I have two problems main problems: the headtube and the bottom bracket, i cannot find these two parts for sale here in South America, not even in internet. What could i do? Ordering them abroad? What sites do sell them?
Weler Martins I know people have made their own jigs out of wood. Maybe not as precise. I have OCD. I know a company called juggernaut made a cheap one. There’s a lot of framebuild supply stores online. I would imagine they ship international but most likely expensive. The spork is a fork made by Rodeo labs. Just one I was considering.
)1To vent heated air away from the welded region. 2) to purge the tubing with Argon or other non-reactive gas(es). 4130 typically can benefit from purging the interior. I need to set up to do this myself if I’m going to use it much for things like bike frames.
I really have enjoyed watching both of your build series, quick question about where you are sourcing your frame components from? It may have been said in a previous video, but I couldn’t find it. Thanks
Edward Wingate I wanted to do a no frills nothing fancy build. For steel of 1mm wall it’s safe to not purge and HS. For the BB I was pulsing and keep heat under control. 👍
@@PithyBikes tough to beat park tools. Thought it looked really interesting. Love the channel and how you are working in some 3d printing . Inspired me to try some printed tube blocks -- pretty good success so far
If you mean the block that holds the tube for cutting, yes it's home made. If you mean the wooden jig, yes its home made and I have a video series where I build it! Cheers!
@@PithyBikes No, I mean the arm with pivots that you clamped to the table and that can be clamped to a frame for welding and that has conductive braid along it. It's shown at the very beginning of the video.
@@cedriceveleigh aha! yes there is a video. It's a modified monitor arm. I've since modified it even more since the video in this link because the joint broke. So I welded my own. czcams.com/video/H4VHNWvWIOQ/video.html
At 15:17 you can use this trick to quickly find the approximate radial path to the center of a cylinder when drilling: czcams.com/video/m3WWoQDGO2c/video.html
I like how professionaly you end the welds. Turning your head and not breathing into the cooling weld.
**I move away from the weld to breathe out
These are my favorites series here in YT. Thank you Pithy Bikes for sharing the process to us. I'm about to starting my fist frame build and you are helping a lot. I also have a lot of questions about welding and frame building in itself, that for you guys it might be simple. I would love to receive some help and advice to my first project.
Weler Martins I get a lot of inquiries about this same topic. I’ll put together a guide on my website. But in the meantime, feel free to contact me directly. Pithybikes.com
great to have you back making videos, your welding has come on great 👍🏻
eating a healthy meal and watching this awesome bike build
Props for using the Tor Browser.
Beautiful. Noticed you did some of the welding left-handed, very slick!
Finally I found awsome channel in the CZcams. It’s like finding teasure. I really enjoy your videos, thank you for sharing your work!
Hey bud, just a quick tip for your wheel building.
Your very first drive side spoke should go to the right hand side of the valve hole, not the left. If you build it to the left like you did here, you end up with a valve that’s difficult to access because it’s in the middle of a group of 4 spokes crossing each other.
Build it to the right of the valve hole and you have a very easy to access valve.
Makes a big difference. Not trying to troll, just helpful info.
Thanks for the continued work you put into these videos.
C
C T thanks for the tip. I welcome it! I’m new to wheel building so it’s appreciated.
@@PithyBikes You also should build it so that when you look down through the spoke hole you can see the brand name on the hub :) Of course this makes no difference really but it's just one of those things and actually it's quite helpful to keep things in the right orientation. Otherwise after putting in the first 1/4 of the spokes you can end up scooching it all the wrong way and then the valve hole ends up in the wrong place.
Left side of the hub, first spoke goes left of valve hole. Right side of hub right side of first spoke. Easy way to remember
Beautiful work sir!
Thanks for this, Man.
Fantastic.!
Another well-made and inspiring video. Wonder if you have ever used step drills for the BB holes? I have tons of drills but often they are just the ticket to save time on non precision holes. Love your craftsmanship, video quality, and clear explanation!
The Eccentric Hobbyist I haven’t but I should try that!
The thing I'm sure you have discovered about smaller wheels is lacing is harder (without Bending the spokes too much) But tensioning and trueing is a lot easier.
Would you ever want a bigger mill and lathe?
Sometimes a quick blast of compressed air to speed cool will pull it more dramatically.
16:21 Nice to see you lower the drill speed for the larger size.
Nice welds!
Nice work, I'm a big fan looking to get started.
What were the welder settings ? (Amps, pulse % etc)
czcams.com/video/K5-Scj6bXyc/video.html
Interesting the hole sizes you put in the bottom bracket. All I ever use is 1/8". Is there a need for larger?
Saves weight :)
Wildman Tech I go larger if I can in case debris works it’s way inside the tube. Easier to shake out. But some do it for Wright savings too which I’m not really concerned with for this build.
What’s the purpose of the holes in the bottom bracket? Couldn’t the first center drill puncture be sufficient? Maybe there is an advantage with larger holes, but I’m not sure. Thanks
Joel L yep first drill is prob for fine. Holes are mainly for ventilation to prevent condensation. I like larger holes in case debri gets in tube. Easier to shake out
Pithy Bikes - I see. That makes sense. Living in the dry southwest desert all my life, I never see much condensation on any thing except maybe the A/C coils in late summer..... lol. I had assumed the holes were so you could ensure shielding gas coverage during welding.
Is that a Shimano 525 front hub an CR18 406 rim?
Left spoke length: 187.9
Right spoke length: 189.3
Remember the disc slightly offsets the flange.
Cup & Cone pretty close. My new measurements came in at 185.
damn i wanna weld my own bike...
So do i. Let discuss about it haha
I want to fillet braze a 650b gravel/touring bike, around a rodeo labs spork. why fillet braze you ask? because Tom Ritchey is my hero and because i think it'll be cheaper..maybe I think i have enough brass clothes hangars in my closet to cover the joints for a frame lol. My only hurdles. Bending stays is a big queston mark, the money for a jig/tools/supplies and the space to do it(i live in a small apartment). all i have is dreams and curiosity.
@@antoinedoinell Yeah i agree that bendind stays is difficult. People say that brazing/welding process make a huge smell, so you'd have to find some place to
install your shop, not just because of it but also to set all the tools. I don't even have a welding machine but i'm looking for one that at least weld aluminium. Bicycle frame Jig? I'm years away from it. Thinking about getting some flat surface to set all the tubes, by the help of gravity. Of course i don't have a drill station, so every tube conjunction will have to be made by hands and a normal saw. I have two problems main problems: the headtube and the bottom bracket, i cannot find these two parts for sale here in South America, not even in internet. What could i do? Ordering them abroad? What sites do sell them?
@@antoinedoinell i searched for rodeo labs spork. Is it a fork or a rack?
Weler Martins I know people have made their own jigs out of wood. Maybe not as precise. I have OCD. I know a company called juggernaut made a cheap one. There’s a lot of framebuild supply stores online. I would imagine they ship international but most likely expensive. The spork is a fork made by Rodeo labs. Just one I was considering.
Question why need to drill holes in the BB shell?
)1To vent heated air away from the welded region.
2) to purge the tubing with Argon or other non-reactive gas(es).
4130 typically can benefit from purging the interior. I need to set up to do this myself if I’m going to use it much for things like bike frames.
I really have enjoyed watching both of your build series, quick question about where you are sourcing your frame components from? It may have been said in a previous video, but I couldn’t find it. Thanks
Paragon Machine Works for bike parts and bits is one place.
Due to time sensitivity usually Amazon. But I get a good amount from treefort bikes online
Yes highly recommend Paragon Machine Works.
Why didn't you use your purging heat sinks?
Edward Wingate I wanted to do a no frills nothing fancy build. For steel of 1mm wall it’s safe to not purge and HS. For the BB I was pulsing and keep heat under control. 👍
Looks like a 3 cross pattern in your wheel, did you order for a 4 cross perhaps?
NickDangerThirdGuy I setup the spike cal for a 3 cross. Most likely I overshot the erd
@@PithyBikes No worries, just Monday morning QBing. Have been enjoying your vids immensely.
Hi, love the video! I'm wondering why holes are drilled in the bottom bracket shell?
Drainage, venting etc
What's the make/ model of the truing stand you modified?
alex theumer it’s a rxr tx1 import from China. It does the job but it’s really nothing special. Wish I just got a park tool
@@PithyBikes tough to beat park tools. Thought it looked really interesting. Love the channel and how you are working in some 3d printing . Inspired me to try some printed tube blocks -- pretty good success so far
What's the frame holder tool shown at the beginning of the video? Is it home made? And if yes, is there a video for it?
If you mean the block that holds the tube for cutting, yes it's home made. If you mean the wooden jig, yes its home made and I have a video series where I build it! Cheers!
@@PithyBikes No, I mean the arm with pivots that you clamped to the table and that can be clamped to a frame for welding and that has conductive braid along it. It's shown at the very beginning of the video.
@@cedriceveleigh aha! yes there is a video. It's a modified monitor arm. I've since modified it even more since the video in this link because the joint broke. So I welded my own. czcams.com/video/H4VHNWvWIOQ/video.html
@@PithyBikes Ah, thank you!
At 15:17 you can use this trick to quickly find the approximate radial path to the center of a cylinder when drilling: czcams.com/video/m3WWoQDGO2c/video.html