lostviking Posted January 13 Report Share Posted January 13 (edited) Well, I am of course going to use them on my 230 engine, but Langdon (now sold via 12bolt.com) doesn't sell the flanges. I went looking for flanges, but couldn't find an exact fit. The best measurements I get are these use a 3.2" space flange for 5/16-14 bolts. Seems all the 2" flanges I could find all have 3.25" spacing, and it's for 3/8 bolts. I figured the extra dia would make up the spacing, and it does, but the flanges were pathetic in my opinion, with very little material compressing the gasket...if you can find one that fits. A common theme you might have noticed, is that I can and will design my own solutions, when I can't get what I want. So, I did. Here is a picture of why I did this. Now these flanges were only about $4.50 each and shipping was reasonable...but. IMHO, I can do better...so I did. I designed a flange that exactly(ish) matches the outline of the manifold flange, and it 2" ID. The holes are spaced exactly with a lose clearance fit for 5/16-14 bolts. I did a 3/8" flange thickness also. They were about $38 shipped to my door (2 each). My intent is the use a grinder to size and cleanup the manifolds so I have a 1/2 depth at 2". They measure around 1.9" right now. I'm going to break the edge all around the perimeter a bit also. The reason is, I'm going to use donut gaskets. I'll weld pipe so it sticks through the flanges and goes into the 1/2 deep pocket. I'll put the donut around the pipe, and when I tighten the bolts, it will begin to extrude/deform the donut gasket into the manifold. We do this exact thing on Harley shovelheads to eliminate gasket failures. I haven't changed a gasket on my 79 FLH is oh, maybe 15 years. The new flanges ship on Monday, so once I get them I can bolt them in place and use them as a template to scribe a line on the manifolds. What could be more fun? Edited March 23 by lostviking Quote Link to comment Share on other sites More sharing options...
lostviking Posted January 17 Author Report Share Posted January 17 Got my new parts in today. MUCH better design, if I do say so myself 1 Quote Link to comment Share on other sites More sharing options...
flathead Posted March 23 Report Share Posted March 23 I picked up some original Fenton headers a while back but have not installed then yet Quote Link to comment Share on other sites More sharing options...
John-T-53 Posted March 25 Report Share Posted March 25 On 1/16/2024 at 7:09 PM, lostviking said: Got my new parts in today. MUCH better design, if I do say so myself Where did you order these custom flanges from? I too have a set of Langdon headers that have been on the shelf for about 10 years now.... Quote Link to comment Share on other sites More sharing options...
lostviking Posted March 26 Author Report Share Posted March 26 Its a place called SendCutSend. You just send them a drawing of the part, tell them the material and thickness and bam. I've used them a couple times now. Better than going to a traditional machine shop, or even just doing it yourself some times. 1 Quote Link to comment Share on other sites More sharing options...
ggdad1951 Posted March 26 Report Share Posted March 26 1 hour ago, lostviking said: Its a place called SendCutSend. You just send them a drawing of the part, tell them the material and thickness and bam. I've used them a couple times now. Better than going to a traditional machine shop, or even just doing it yourself some times. How was your experience with SCS? I looked into them and my dxf that was in inches they said was in mm? Quote Link to comment Share on other sites More sharing options...
John-T-53 Posted March 26 Report Share Posted March 26 15 minutes ago, ggdad1951 said: How was your experience with SCS? I looked into them and my dxf that was in inches they said was in mm? ...hey, that would work if you're making a scale model of something. 😂 1 Quote Link to comment Share on other sites More sharing options...
lostviking Posted March 26 Author Report Share Posted March 26 1 hour ago, ggdad1951 said: How was your experience with SCS? I looked into them and my dxf that was in inches they said was in mm? You should make sure that the scaling of the DXF export is correct, it does happen. I usually dimension the drawings also. Keep any issues like that from happening, because they have the dimensions I say it is right in the drawing. The only problem I had was in the first part I sent them, I sent a top and side view, as I would most vendors. They sent me both parts Quote Link to comment Share on other sites More sharing options...
John-T-53 Posted March 27 Report Share Posted March 27 They don't accept .dwg files? Quote Link to comment Share on other sites More sharing options...
ggdad1951 Posted March 27 Report Share Posted March 27 11 hours ago, lostviking said: You should make sure that the scaling of the DXF export is correct, it does happen. I usually dimension the drawings also. Keep any issues like that from happening, because they have the dimensions I say it is right in the drawing. The only problem I had was in the first part I sent them, I sent a top and side view, as I would most vendors. They sent me both parts The exact same file worked just fine at CoreMark metals....no scale issues....I guess a drw file woudln't hurt. Next thing I need made I was going to try them. Quote Link to comment Share on other sites More sharing options...
Lingle Posted March 27 Report Share Posted March 27 can I ask, I think it was above, what software are you guys using? I dont have access, and cannot use my work software even if I had access to it for personal use, to a free or reasonably priced software to do basic things. I would like to have some laser cut sheetmetal made but the local shops to me are not interested so hoping if I can find a good software to get to do some basic work. Quote Link to comment Share on other sites More sharing options...
lostviking Posted March 27 Author Report Share Posted March 27 Do a google search. There are a number I have used, but it's been awhile. I use Solidworks and Draftsight, so... No, SendCutSend only takes DXF files. Quote Link to comment Share on other sites More sharing options...
ggdad1951 Posted March 27 Report Share Posted March 27 Creo is what I currently use. Quote Link to comment Share on other sites More sharing options...
John-T-53 Posted March 27 Report Share Posted March 27 (edited) SCS looks legit. I hadn't heard of them before. I see they offer many materials and in addition to cutting out shapes, they do bending, threading, fabricating, and plating. This should greatly expand the horizons on restoration needs. They could probably even make a new battery box from the template that was posted on here or DPETCA years ago. I'm an AutoCAD person, so my project list is growing as fast as I can draw, lol... Edited March 27 by John-T-53 Quote Link to comment Share on other sites More sharing options...
lostviking Posted March 29 Author Report Share Posted March 29 Someone else asked about the exhaust flanges I had made, so I'll post the drawing and anyone who wants can use it. exhaust flange.DXF 1 Quote Link to comment Share on other sites More sharing options...
Frank Gooz Posted March 31 Report Share Posted March 31 Lostviking, I want you thank you for helping. This was very nice that you let us all have you file. Very great full Frank Quote Link to comment Share on other sites More sharing options...
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