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Search: Posts Made By: guy153
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Forum: Framebuilders
10-18-21, 07:13 AM
Replies: 4
Views: 170
Posted By guy153

I usually just try to stuff a bit of tissue paper...

I usually just try to stuff a bit of tissue paper in to catch most of it and then clean any paint out with acetone afterwards.

You can also make a crude thread chaser by cutting a couple of...
Forum: Framebuilders
10-17-21, 04:01 PM
Replies: 8
Views: 288
Posted By guy153

Yes little steps and most importantly don't give...

Yes little steps and most importantly don't give up. You should have seen my first TIG welds. I never thought I would be able to make a bike frame. But somehow if you keep practicing you get better...
Forum: Framebuilders
10-17-21, 03:34 PM
Replies: 6
Views: 197
Posted By guy153

Fork legs are usually pretty thick. Just drop a...

Fork legs are usually pretty thick. Just drop a bit of weld in there and sand it all flush and nobody will ever know. Very unlikely to cause a failure.
Forum: Framebuilders
10-17-21, 10:59 AM
Replies: 8
Views: 288
Posted By guy153

Yes, what Andrew said. In fact almost every joint...

Yes, what Andrew said. In fact almost every joint on the frame is thick to thin.

Also I would start with 90 degree joints and when you're comfortable with those try some of the angles you get on...
Forum: Framebuilders
10-16-21, 02:46 AM
Replies: 8
Views: 288
Posted By guy153

If you're making a TIG frame I would use an...

If you're making a TIG frame I would use an externally butted seat tube and a thicker head tube (32.4 rather than 31.7), and you will want a plain BB shell. Ceeway will be able to sort you out with...
10-15-21, 12:23 PM
Replies: 26
Views: 798
Posted By guy153

As others have said that's a real handmade Dutch...

As others have said that's a real handmade Dutch frame, not Chinese, and it looks very nice.

I don't think it's bad for the $$$ considering it hasn't been used. But yes make sure it's compatible...
Forum: Framebuilders
10-11-21, 02:33 AM
Replies: 439
Views: 275,579
Posted By guy153

It would solve that issue but is a bit of a...

It would solve that issue but is a bit of a nuclear option. Really a step-through is an engineering compromise to support people who either want to ride in a dress or are used to getting on a bike...
Forum: Framebuilders
10-10-21, 02:08 PM
Replies: 439
Views: 275,579
Posted By guy153

That sounds like my wife whose bike this is :) I...

That sounds like my wife whose bike this is :) I think it's a milestone in every framebuilder's career when his own wife trusts his welds enough to let him make her a bike :)

She's now done...
Forum: Framebuilders
10-10-21, 03:21 AM
Replies: 21
Views: 503
Posted By guy153

It was Columbus. I don't remember how much...

It was Columbus. I don't remember how much material I had to remove but it was pretty slow and painful. The drill battery ran out at least once :)
Forum: Framebuilders
10-03-21, 09:06 AM
Replies: 41
Views: 2,005
Posted By guy153

Even if it isn't heat-treated you're still...

Even if it isn't heat-treated you're still probably losing some cold working. If it is heat-treated though it might not be a good idea to try to bend it cold. Might be preferable to heat it.

But I...
Forum: Framebuilders
10-01-21, 04:07 PM
Replies: 21
Views: 503
Posted By guy153

I've used a few regular size Reynolds HTs now and...

I've used a few regular size Reynolds HTs now and they're all exactly 34mm ID. No reaming required but sometimes a bit of loctite is. Not really a fan of this but since I don't own the reamer the...
Forum: Framebuilders
09-28-21, 02:17 AM
Replies: 41
Views: 2,005
Posted By guy153

Good idea! Have never made a whole handlebar but...

Good idea! Have never made a whole handlebar but did make, or rather convert, this stem.

The main thing with fixturing is you want your handlebar to be level. Because it's quite long any small...
Forum: Framebuilders
09-18-21, 04:26 PM
Replies: 14
Views: 668
Posted By guy153

I just looked up the stack height on a...

I just looked up the stack height on a Specialized Rockhopper XXL. It's 654mm. I recently finished a bike with a stack height of 717mm (https://www.bikeforums.net/22226303-post430.html). But the...
09-12-21, 11:11 AM
Replies: 27
Views: 808
Posted By guy153

Maybe if your race number is a different size you...

Maybe if your race number is a different size you move the little chrome dealy out to the other boss?

Or it could be an adventure nipple ahead of its time. Modern "gravel" bikes are usually...
Forum: Framebuilders
09-12-21, 02:36 AM
Replies: 439
Views: 275,579
Posted By guy153

Latest build completed. As you can see some...

Latest build completed. As you can see some pretty rad yet traditional geometry on this one. The idea is high stack for commanding road position, no sore neck, hands or shoulders, plus a comfortable...
Forum: Framebuilders
09-05-21, 01:50 AM
Replies: 28
Views: 1,293
Posted By guy153

I put those numbers into my "CAD" and it doesn't...

I put those numbers into my "CAD" and it doesn't look good. This is assuming CS that are 22.2mm/18mm at the oval part. The green line is at 18mm. But if you use CS with a bend in them there will be...
Forum: Framebuilders
09-04-21, 06:37 AM
Replies: 41
Views: 2,005
Posted By guy153

Could have used the canti posts for a rando rack!

Could have used the canti posts for a rando rack!
Forum: Framebuilders
08-27-21, 02:17 PM
Replies: 27
Views: 1,521
Posted By guy153

That's a really good idea. You should be able to...

That's a really good idea. You should be able to wrap sandpaper around a tapered tube if you just cut the edges at an angle. I figured out the math to make tapered mitre templates and used those (you...
Forum: Framebuilders
08-11-21, 04:06 PM
Replies: 15
Views: 1,137
Posted By guy153

Yes I just eagerly went to have a look... and saw...

Yes I just eagerly went to have a look... and saw something about "unboxing a dengfu".
Forum: Framebuilders
08-08-21, 04:49 PM
Replies: 41
Views: 2,005
Posted By guy153

Thanks! This is really useful. Seat-stays usually...

Thanks! This is really useful. Seat-stays usually only need very gentle bends anyway.
Forum: Framebuilders
08-06-21, 02:02 AM
Replies: 11
Views: 871
Posted By guy153

I don't like disks on road bikes because I'd much...

I don't like disks on road bikes because I'd much rather have pencil-thin SS, a fork that isn't all beefed up, and the braking force going through the fork crown and SS bridge which are on the...
Forum: Framebuilders
07-17-21, 04:10 PM
Replies: 27
Views: 1,552
Posted By guy153

I think that's a head-tube. Some of these are...

I think that's a head-tube. Some of these are supplied very long and they're the only non-butted tubes in the Reynolds catalogue. Also those dimensions work out to a 34mm ID (which is HT sized).
Forum: Framebuilders
06-26-21, 06:50 AM
Replies: 0
Views: 270
Posted By guy153

Unicrown fork mitring jig

Having found the last time that these are very tricky to do by hand (at least for me) I thought I'd have a go at making a jig to hold things steady for mitring with a hole saw. Actually worked out...
Forum: Framebuilders
06-25-21, 02:28 AM
Replies: 30
Views: 4,328
Posted By guy153

Nice work to do it with a spreadsheet! I wrote...

Nice work to do it with a spreadsheet! I wrote mine in Python. It does render a scale drawing (more for sanity checking) and mitre templates. You save the bike design (in an .ini file) and then it...
Forum: Framebuilders
04-19-21, 12:31 PM
Replies: 10
Views: 1,770
Posted By guy153

I also mitre by hand. It's not a difficult mitre....

I also mitre by hand. It's not a difficult mitre. Most important is that the chainstays are exactly the same length, or the back wheel won't sit right. You can only do this if you can fixture it...
Forum: Framebuilders
04-03-21, 10:25 AM
Replies: 9
Views: 1,029
Posted By guy153

I generate two mitre templates, one for DT to BB...

I generate two mitre templates, one for DT to BB and one for DT to ST. Then my CAD software tells me the offset between them on the DT inside centreline in this case 11.29mm. So then I can trace them...
Forum: Framebuilders
03-24-21, 02:50 AM
Replies: 12
Views: 1,237
Posted By guy153

The one I made had a longer CS (450) but a...

The one I made had a longer CS (450) but a shorter front-centre (776). Total wheelbase 1218. So not far off your limit! You're right people often do go with a short CS. I think that's why the design...
Forum: Framebuilders
03-14-21, 02:05 AM
Replies: 12
Views: 1,079
Posted By guy153

I call this the British Car Problem. You hear a...

I call this the British Car Problem. You hear a funny noise and think CV joint. You take it all apart and the CV is indeed shot. Three days later, and with most of the grease now out of your eye...
Forum: Framebuilders
03-11-21, 06:44 AM
Replies: 30
Views: 3,729
Posted By guy153

Well here is the final project, although I will...

Well here is the final project, although I will put some paint on it:


https://cimg1.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1587/dsc_0001_b353583abf118dcedea3c9a54f2dfc253c6db294.jpg

One...
03-08-21, 03:43 AM
Replies: 32
Views: 2,334
Posted By guy153

I think that was about the time I moved to a not...

I think that was about the time I moved to a not bothering to watch GCN role. Probably well-timed. Yes Jon was good.
03-07-21, 01:54 PM
Replies: 32
Views: 2,334
Posted By guy153

I don't usually watch GCN because they're so...

I don't usually watch GCN because they're so noddy. But this has to be the peak of muppetry.

At least it wasn't a particularly nice old bike that they were ruining!


​​​
Forum: Framebuilders
03-04-21, 08:09 AM
Replies: 26
Views: 2,826
Posted By guy153

I will be interested in the answer to your actual...

I will be interested in the answer to your actual questions too :) But why not just use steel cable housing stops? They're very easy to braze onto a steel frame.
03-03-21, 09:41 AM
Replies: 89
Views: 4,785
Posted By guy153

One possibility is they became a bit too obsessed...

One possibility is they became a bit too obsessed with cars, being pioneers of motorways, and having a lot of very strong car-manufacturing going on.
Forum: Framebuilders
02-22-21, 10:42 AM
Replies: 30
Views: 3,729
Posted By guy153

Thanks! One thing I don't recommend however is...

Thanks! One thing I don't recommend however is dropping one of the sections of square tube onto one's toe while wearing safety sandals.
02-19-21, 11:44 AM
Replies: 273
Views: 19,601
Posted By guy153

I don't get it. There are plenty of places to put...

I don't get it. There are plenty of places to put groceries and small children on that big shelf on the back.
Forum: Road Cycling
02-16-21, 07:02 AM
Replies: 109
Views: 7,562
Posted By guy153

You can have all the qualifications in the world...

You can have all the qualifications in the world and still be a muppet.

It's not about credentials it's about the quality of the content. I like Peak Torque he makes great videos and if you want...
02-12-21, 03:14 PM
Replies: 273
Views: 19,601
Posted By guy153

I thought the Tonka truck argument was pretty...

I thought the Tonka truck argument was pretty good. We acquire a prejudice against plastic from an early age.

It is actually an incredible material but familiarity breeds contempt. Would you...
02-11-21, 12:11 PM
Replies: 273
Views: 19,601
Posted By guy153

Especially new-fangled aluminium. But to my...

Especially new-fangled aluminium. But to my knowledge no plane made of cast iron has ever crashed.
02-10-21, 04:07 PM
Replies: 17
Views: 798
Posted By guy153

They look like they're actually welded on. So a...

They look like they're actually welded on. So a torch would be no use as the whole fork would melt at the same temperature as the welds.
02-10-21, 04:05 AM
Replies: 273
Views: 19,601
Posted By guy153

Ti is expensive and has a better...

Ti is expensive and has a better strength-to-weight ratio than all the HSLA steels available, up to and including Reynolds 853 (and the Columbus equivalent). But the stainless steel tubes like...
02-10-21, 03:39 AM
Replies: 273
Views: 19,601
Posted By guy153

Interesting and cool bikes but they were just ERW...

Interesting and cool bikes but they were just ERW mild steel. Do you know what wall-thickness they used? I doubt it's as durable as a modern MTB frame made with DZB Reynolds 853.
02-09-21, 11:33 AM
Replies: 11
Views: 790
Posted By guy153

Fewer spokes with the same number of crossings...

Fewer spokes with the same number of crossings means the angle between the spokes and rim is bigger. It's that angle that's important-- the closer the spokes are to radial the more the tension...
02-09-21, 02:36 AM
Replies: 273
Views: 19,601
Posted By guy153

A CF frame weighs about 1kg. A respectable but...

A CF frame weighs about 1kg. A respectable but not super high-zoot steel road frame (using e.g. Reynolds 631 or Columbus Zona and .8/.5/.8 tubes-- i.e. not overbuilding the crap out of it like many...
02-07-21, 03:47 AM
Replies: 33
Views: 2,677
Posted By guy153

You'd just fill in the divot with weld and sand...

You'd just fill in the divot with weld and sand it all smooth. Would work fine with steel (although you'd probably fill it in with bronze). But Al used on bike frames usually requires post welding...
02-03-21, 03:08 AM
Replies: 22
Views: 1,668
Posted By guy153

It's a fine idea, especially as you can't get...

It's a fine idea, especially as you can't get Campy hubs any more (sob). Surely people who buy super-spendy hubs like Chris King must do this all the time? The lifetime of a quality hub should...
02-02-21, 03:27 AM
Replies: 24
Views: 1,164
Posted By guy153

You can have cracks from fatigue but in this case...

You can have cracks from fatigue but in this case you can see lots of severe denting on both stays that implies traumatic damage. The radiant spangliness of the chromovelato finish is also consistent...
Forum: Framebuilders
02-01-21, 03:34 AM
Replies: 0
Views: 540
Posted By guy153

Rear axle alignment deep dive

Doug suggested in another thread that establishing alignment during build was worthy of a thread...

These are my thoughts on it in case anyone is interested. Obviously I'm a total amateur but I do...
Forum: Framebuilders
01-31-21, 12:26 PM
Replies: 10
Views: 1,096
Posted By guy153

Good luck! I always find paint looks a bit...

Good luck! I always find paint looks a bit different depending on what it's on whether that's a wall or a bike frame. Probably something to do with that gold dress illusion. So it's not worth...
Forum: Framebuilders
01-27-21, 05:35 PM
Replies: 34
Views: 4,923
Posted By guy153

They're all made of wood. If any are a darker...

They're all made of wood. If any are a darker colour it might because they're a bit burnt :) They hold up OK for TIG tacking, not sure how they'd work if you were using a gas torch. I've found a few...
Forum: Framebuilders
01-26-21, 01:10 PM
Replies: 12
Views: 1,647
Posted By guy153

I go with two tacks at the DT to HT, two at TT to...

I go with two tacks at the DT to HT, two at TT to HT and two at TT to ST. The BB shell is already fully welded to the ST at this point for me and the CS are also already fully attached. I don't need...
Showing results 1 to 50 of 115
 


 
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