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Search: Posts Made By: guy153
Showing results 1 to 50 of 101
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09-12-21, 11:11 AM
Replies: 27
Views: 661
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: 429
Views: 273,207
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: 25
Views: 695
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: 25
Views: 1,058
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
08-11-21, 04:06 PM
Replies: 15
Views: 837
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: 25
Views: 1,058
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: 603
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: 16
Views: 808
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: 252
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: 29
Views: 3,861
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: 1,634
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: 987
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: 1,215
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: 1,062
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: 3,633
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: 2,131
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: 2,131
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: 2,681
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: 4,554
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: 3,633
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: 18,707
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: 7,299
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: 18,707
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: 18,707
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: 726
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: 18,707
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: 18,707
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: 745
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: 18,707
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: 2,455
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: 1,550
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: 1,112
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: 489
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: 1,068
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: 4,728
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: 1,545
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...
Forum: Framebuilders
01-26-21, 01:06 PM
Replies: 12
Views: 1,545
Posted By guy153

I have a couple of big spring clips like this: ...

I have a couple of big spring clips like this:

https://uk.farnell.com/duratool/d02332/steel-spring-clamp-150mm/dp/2444536

And I just clip one on underneath the TT. I usually only need one at...
Forum: Framebuilders
01-26-21, 12:07 PM
Replies: 12
Views: 1,545
Posted By guy153

It also might be a problem that the top of the HT...

It also might be a problem that the top of the HT is free to float around. But overall it looks like a good design. And it can always be modified a bit if necessary.

I think there are two ways to...
Forum: Framebuilders
01-19-21, 12:42 PM
Replies: 19
Views: 1,754
Posted By guy153

He does use it on seatstays, even on one of his...

He does use it on seatstays, even on one of his earlier videos which was a pretty heavily built e-bike. I kind of thought he should have tigged those. I can't remember what gauge the tubing was but...
Forum: Framebuilders
01-19-21, 09:39 AM
Replies: 7
Views: 784
Posted By guy153

Threadless stem conversion

And I do mean literally. I must be the only person mad enough to have converted a low-end quill stem to threadless like this. Seems to have worked out pretty good though. I'm thinking of welding the...
Forum: Framebuilders
12-19-20, 05:19 AM
Replies: 37
Views: 4,299
Posted By guy153

Yeah but if we're honest this is really just...

Yeah but if we're honest this is really just marketing guff and there's obviously no such thing as magic. Some people are better at better at making bikes than others and I'm sure there are many...
Forum: Framebuilders
12-11-20, 04:00 AM
Replies: 6
Views: 1,128
Posted By guy153

631 is also air-hardening. 853 is the same exact...

631 is also air-hardening. 853 is the same exact alloy just also heat-treated. Either is absolutely fine though and not really any different in practice to CrMo. The 631 will be easier to cold-set...
11-20-20, 03:51 PM
Replies: 15
Views: 757
Posted By guy153

If you put the wheel in the wrong way around is...

If you put the wheel in the wrong way around is the problem still there or does it move to the other side?

Once you've proved it's the frame and not the wheel the fix is just to file the top of...
Forum: Framebuilders
11-13-20, 01:12 PM
Replies: 15
Views: 1,505
Posted By guy153

Yes an old bike is a good source of practice...

Yes an old bike is a good source of practice material. If you're anything like me you will need a bit more practice than just resizing it once though. An entire bike almost completely reduced to 1"...
Forum: Framebuilders
10-27-20, 10:52 AM
Replies: 34
Views: 3,397
Posted By guy153

Stick is still used a lot on thicker materials...

Stick is still used a lot on thicker materials where its main rival is "dual shield flux core" which uses both a flux cored wire and a shielding gas at the same time.
Forum: Framebuilders
10-21-20, 11:40 AM
Replies: 31
Views: 4,836
Posted By guy153

Sounds like it's going to be a sweet bike. I like...

Sounds like it's going to be a sweet bike. I like road stays but they don't allow for as much tyre clearance as the beefier curved ones (which are more intended for MTB, gravel and touring bikes.
...
Forum: Framebuilders
10-18-20, 02:32 PM
Replies: 34
Views: 3,397
Posted By guy153

There will always be some welding jobs that it...

There will always be some welding jobs that it doesn't make sense to outsource because you can't ship a whole bridge, railway station or complete system of pipes from China. There are also people who...
Forum: Framebuilders
10-18-20, 10:46 AM
Replies: 34
Views: 3,397
Posted By guy153

The other day we had an electrician come round to...

The other day we had an electrician come round to replace a fusebox. He kept trying to do what he had quoted as a two hour job too quickly. He kept rushing, dropping things, swearing, falling off his...
10-12-20, 10:55 AM
Replies: 18
Views: 766
Posted By guy153

They're usually very strong although they're...

They're usually very strong although they're available in different sizes. They're all 34.8mm on the inside (English threads) and some are as much as 40mm on the outside. That's 2.6mm wall thickness....
10-07-20, 05:57 AM
Replies: 92
Views: 4,896
Posted By guy153

I do build my own frames :) Out of steel because...

I do build my own frames :) Out of steel because it's the only thing I know how to weld and also because it's sick. I use Columbus or Reynolds tubing (Reynolds is actually a bit cheaper for me right...
Showing results 1 to 50 of 101
 


 
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