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Search: Posts Made By: guy153
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Forum: Framebuilders
10-21-22, 03:23 PM
Replies: 12
Views: 630
Posted By guy153

It was this bike. Looks nice enough in those...

It was this bike. Looks nice enough in those pictures but I'd only just made it. That was spray.bike paint and clear. After a couple of winters (there are no fenders) the paint was quite chipped and...
Forum: Framebuilders
09-20-22, 09:40 AM
Replies: 14
Views: 682
Posted By guy153

The heat wouldn't do anything special-- mild...

The heat wouldn't do anything special-- mild steel is basically the same before and after you weld it. But if you're adding metal you're adding strength. So yes if you just filled it all in and...
Forum: Framebuilders
09-16-22, 02:11 AM
Replies: 4
Views: 545
Posted By guy153

At your size and weight I would go traditional...

At your size and weight I would go traditional "single oversize" (so 1 1/4" DT, 1 1/8" TT), with wall thickness around 0.8/0.5/0.8 which would be Zona. Cromor would also be fine-- it's usually...
Forum: Framebuilders
09-14-22, 01:06 AM
Replies: 14
Views: 593
Posted By guy153

I think adaptors over the DT bosses actually work...

I think adaptors over the DT bosses actually work better. If they seize up you have more options. You can also run with DT shifters or barcons in the future when Shimano have switched everything to...
Forum: Framebuilders
09-11-22, 03:58 AM
Replies: 24
Views: 1,119
Posted By guy153

Looking at that catalogue it says all Dedacciai...

Looking at that catalogue it says all Dedacciai tubing is seamless cromoly (25CrMo4 is the European standard equivalent to 4130). So it's all good, and basically equivalent to anything from Columbus...
Forum: Framebuilders
09-06-22, 12:28 PM
Replies: 32
Views: 1,376
Posted By guy153

Mine is an "R-Tech" which is the UK version of...

Mine is an "R-Tech" which is the UK version of what's branded "Everlast" in US. Chinese but reasonably good. The solenoid failed and they sent me a warranty replacement. The display just shows random...
08-21-22, 11:58 AM
Replies: 35
Views: 1,115
Posted By guy153

I reuse them, seems to be OK. 10 speed is the...

I reuse them, seems to be OK. 10 speed is the newest fangled on any of my bikes though. The 9 speed ones you were officially allowed to reuse.
Forum: Framebuilders
08-17-22, 12:40 AM
Replies: 6
Views: 588
Posted By guy153

Yes as others have said they should just drop...

Yes as others have said they should just drop off. But if you don't own that kind of torch very carefully grind them and then sand or file the last bit by hand. If you were filling a hole then yes...
Forum: Framebuilders
07-31-22, 03:18 AM
Replies: 21
Views: 1,928
Posted By guy153

Yes Montana Gold is acrylic. Doug Fattic knows...

Yes Montana Gold is acrylic. Doug Fattic knows much more about these things than I do. But the Montana stuff goes on well compared to spray.bike (also acrylic) which can leave a lot of powder lying...
Forum: Framebuilders
07-19-22, 02:37 AM
Replies: 21
Views: 1,928
Posted By guy153

I recommend 2k clear as well. Andy is probably...

I recommend 2k clear as well. Andy is probably right that it's only a bit tougher, but it's like puncture-resistant tyres: enough is as good as a feast. Spray.bike with its own clear coat gets...
Forum: Framebuilders
06-28-22, 04:31 AM
Replies: 34
Views: 2,639
Posted By guy153

If you'd kept those domed stays you could be...

If you'd kept those domed stays you could be selling them off now probably at a profit. I wonder if Reynolds still have the machine they used to make them.
Forum: Framebuilders
06-21-22, 03:25 AM
Replies: 21
Views: 1,586
Posted By guy153

I'm in UK and Trek replaced a failed frame for me...

I'm in UK and Trek replaced a failed frame for me under the lifetime warranty with no quibbles. The warranty only applies to the first owner (and I've now ebayed that frame since making my own...
Forum: Framebuilders
06-05-22, 11:42 AM
Replies: 18
Views: 1,462
Posted By guy153

Yes use car body filler. If you're painting the...

Yes use car body filler. If you're painting the whole frame I usually use Montana Gold acrylic, Montana Gold steel primer and glossy 2K clear. Actually a pretty decent finish. Leave the acrylic to...
Forum: Framebuilders
05-16-22, 09:31 AM
Replies: 6
Views: 845
Posted By guy153

I don't know what the official size is but I...

I don't know what the official size is but I measured it to be 253.5mm for 26", and used this on a frame. The brakes fit fine. But I would also be interested to have a proper chart.
Forum: Framebuilders
05-16-22, 02:05 AM
Replies: 14
Views: 1,194
Posted By guy153

I did that on my (so far) one disk fork. Worked...

I did that on my (so far) one disk fork. Worked for me (TIG tacking). So many ways to screw things up with all the different standards out there it's quite nice to work with the actual caliper and...
Forum: Framebuilders
05-04-22, 01:36 AM
Replies: 6
Views: 994
Posted By guy153

Yes go for it :) When I say a bit of brass, I...

Yes go for it :) When I say a bit of brass, I mean I would use TIG silicon bronze, just as a kind of filler, after welding the crack with a steel rod. You could skip the brass though-- it isn't...
Forum: Framebuilders
05-03-22, 01:33 AM
Replies: 6
Views: 994
Posted By guy153

I would happily repair it but I'm in the UK which...

I would happily repair it but I'm in the UK which would likely be excessively expensive for shipping. It just needs a TIG weld, a bit of brass, a sliver of car body filler, some similar paint, and...
04-25-22, 02:43 AM
Replies: 8
Views: 351
Posted By guy153

Yes I have observed this after being too lazy to...

Yes I have observed this after being too lazy to change the cassette sometimes :) You can also just not use your favourite gear. I used to use the ruler method but the chain checker is much easier...
Forum: Framebuilders
04-11-22, 11:43 AM
Replies: 13
Views: 1,325
Posted By guy153

Although specialized trials bikes are very...

Although specialized trials bikes are very bizarre (hydraulic rim brakes, rims roughened with an angle grinder, the freewheel at the bottom bracket) people with enough skill can do a lot of tricks on...
Forum: Framebuilders
04-11-22, 01:22 AM
Replies: 13
Views: 1,325
Posted By guy153

Interesting! Trials frames are seriously weird...

Interesting! Trials frames are seriously weird from the point of view of basically every other kind of frame. If you've ridden frames with a similar drop and wheel size then it should be all right....
Forum: Framebuilders
04-08-22, 08:02 AM
Replies: 32
Views: 1,419
Posted By guy153

Good luck! You could glue a bit of aluminium...

Good luck! You could glue a bit of aluminium plate on top where the bolts need to go and then just drill through the whole lot.

When I made a hybrid CF frame with tubes glued into metal lugs the...
04-07-22, 01:34 AM
Replies: 24
Views: 788
Posted By guy153

Depends how many curveballs you run into along...

Depends how many curveballs you run into along the way: unanticipated incompatibilities between parts, things that are stuck or turn out to be knackered. You might need to mess around fabricobbling...
Forum: Framebuilders
04-06-22, 09:12 AM
Replies: 8
Views: 1,348
Posted By guy153

Update to this. I just measured the alignment....

Update to this. I just measured the alignment. The string goes from the dropouts around the HT in the usual way. The gap from ST to string is 4.5mm larger on one side than the other! These calipers...
Forum: Framebuilders
04-05-22, 01:54 PM
Replies: 32
Views: 1,419
Posted By guy153

Interesting project! It will probably be strong...

Interesting project! It will probably be strong enough in theory but a tube or a box section is a more optimal shape. You might not have enough stiffness. If the fork bends in use then it's loaded in...
Forum: Road Cycling
04-05-22, 08:58 AM
Replies: 38
Views: 2,382
Posted By guy153

XCR is 0.6/0.4/0.6, which is the same as Spirit....

XCR is 0.6/0.4/0.6, which is the same as Spirit. I don't see any Spirit that's thinner. But you can get Reynolds 953 a bit thinner (0.5/0.3/0.5). In the case of 953, it's a bit thinner than 853 "Pro...
04-04-22, 01:42 AM
Replies: 47
Views: 2,729
Posted By guy153

I guess another option is just go to the...

I guess another option is just go to the Netherlands and buy one there. That way you can try them out and make sure you get one the right size that feels good.

This was my take on a modern "rad...
Forum: Framebuilders
04-03-22, 12:51 AM
Replies: 11
Views: 1,146
Posted By guy153

I don't think so. But you could probably braze it...

I don't think so. But you could probably braze it with that kind of torch. Is it basically a bent piece of thick wire that you need to join together and also attach to a mounting plate?
04-03-22, 12:43 AM
Replies: 47
Views: 2,729
Posted By guy153

Yes, and Dutch people are enormous. So it was...

Yes, and Dutch people are enormous. So it was definitely the closest match. But I agree that 330lb is probably too much weight for an omafiets. An opafiets with double-oversize tubing and two top...
04-02-22, 11:55 AM
Replies: 47
Views: 2,729
Posted By guy153

Yes agree. He should talk to a custom...

Yes agree. He should talk to a custom framebuilder. He's tall, heavy, and wants what is (bizarrely) these days an unusual riding position. It would be a fun project for a custom builder.
03-29-22, 09:23 AM
Replies: 17
Views: 581
Posted By guy153

Yes that's the stuff. That one with 36E on the...

Yes that's the stuff. That one with 36E on the can is "satin". You want the 88E for full lush glossiness. It's quite pricey but works. One thing to watch out for is give it at least 48h before...
03-29-22, 03:01 AM
Replies: 17
Views: 581
Posted By guy153

I use it outdoors and with a respirator. Yes it's...

I use it outdoors and with a respirator. Yes it's pretty good. I was doing some tests the other day on some tubing I had with it on (long story, I was modifying a frame to add more standover height,...
03-27-22, 11:08 AM
Replies: 17
Views: 581
Posted By guy153

You could put rattle can 2k clearcoat on top....

You could put rattle can 2k clearcoat on top. This also has a catalyst (you pop a pin in the bottom of the can and then it's good for 48h). It sets actually pretty hard.
Forum: Framebuilders
03-27-22, 10:07 AM
Replies: 8
Views: 1,348
Posted By guy153

Chinese Trek welding

Having made a new frame and fork for my Trek 520 Tourer (actually few components are original to the Trek anyway) I thought I'd have a closer look at the welds on the old one. None of this is...
Forum: Framebuilders
03-26-22, 05:51 AM
Replies: 457
Views: 292,676
Posted By guy153

Update to this previous build...

Update to this previous build (https://www.bikeforums.net/22226303-post430.html): remember how I said standover height was a bit of a problem? Well 6 months on and it still was. So I dropped the TT....
03-17-22, 12:08 PM
Replies: 33
Views: 1,379
Posted By guy153

It looks redneck not to weld all the way around...

It looks redneck not to weld all the way around things.
Forum: Framebuilders
03-14-22, 01:31 AM
Replies: 3
Views: 1,154
Posted By guy153

Should be OK. The best place to drill them is...

Should be OK. The best place to drill them is probably about an inch and half from the joints so that you're still in the thicker part of the tube but outside the heat affected zone. Make them as...
03-10-22, 01:28 PM
Replies: 9
Views: 491
Posted By guy153

The RH one has that feature but not sure the LH...

The RH one has that feature but not sure the LH (which is where the problem is) does.
Forum: Framebuilders
03-01-22, 02:18 AM
Replies: 19
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Views: 1,707
Posted By guy153

Of course we care :) I mean most normal people...

Of course we care :) I mean most normal people who just ride bikes. I especially like the idea of spending a lot of time on the inside rear dropout attachment!
Forum: Framebuilders
02-23-22, 02:49 AM
Replies: 8
Views: 1,284
Posted By guy153

That should work. My approach is to rely on the...

That should work. My approach is to rely on the laser and try to make everything else adjustable. So the things that hold the ST and HT are based on kind of dropouts. This means I can file one side...
Forum: Framebuilders
02-22-22, 11:21 AM
Replies: 8
Views: 1,284
Posted By guy153

A follow-up with a couple more pictures showing...

A follow-up with a couple more pictures showing the use of the laser:

Step 1: get it all nice and level. Note that the laser line has to pass through the centre of the rear axle as well as the...
Forum: Framebuilders
02-22-22, 05:52 AM
Replies: 8
Views: 1,284
Posted By guy153

New jig design

So far seems to be working quite well. The design-goals here were to have something quite small that would go on the top of the table; be nice and solid to hold everything still; and have independent...
Forum: Framebuilders
02-17-22, 02:39 AM
Replies: 31
Views: 2,271
Posted By guy153

You might want to: 1. Reduce the chainstay...

You might want to:

1. Reduce the chainstay length by about 19mm
2. Reduce the BB drop by about 19mm to have the same ground clearance
3. Reduce the head angle by a bit (about 1 degree) to keep...
Forum: Framebuilders
02-04-22, 06:49 AM
Replies: 31
Views: 2,839
Posted By guy153

Here in UK it's a bit cheaper than Columbus, and...

Here in UK it's a bit cheaper than Columbus, and those two choices are pretty much the only butted frame tubes easily available.
Forum: Framebuilders
01-20-22, 03:08 AM
Replies: 31
Views: 2,839
Posted By guy153

525: Regular 4130 CrMo 725: Heat treated...

525: Regular 4130 CrMo
725: Heat treated version of same (stronger, less ductile)

631: Special CrMnMo. Similar to CrMo except supposed to get stronger after you weld (or braze) it. This property...
Forum: Framebuilders
12-22-21, 03:14 AM
Replies: 19
Views: 1,312
Posted By guy153

Yes this is excellent advice. I recommend: ...

Yes this is excellent advice. I recommend:

1. Tack the CS
2. Put a wheel in. Use a known good wheel but also try it both ways around.
3. Weld the CS completely
4. Check again
5. Put the SS in....
Forum: Framebuilders
12-21-21, 08:45 AM
Replies: 19
Views: 1,312
Posted By guy153

You could try SJS cycles: ...

You could try SJS cycles:

https://www.sjscycles.co.uk/thorn-replacement-forks-current/

I suspect most unicrown forks of that style will be a bit longer than 380 as a road-fork is usually around...
Forum: Framebuilders
12-20-21, 12:24 PM
Replies: 19
Views: 1,312
Posted By guy153

The ST/BB mitre might not be as gappy as it looks...

The ST/BB mitre might not be as gappy as it looks in the picture. But yes good idea to get it as good as possible. Some other tips for the OP since he said this is frame #1:

1. Triple-check the BB...
Forum: Framebuilders
12-16-21, 04:37 PM
Replies: 21
Views: 1,659
Posted By guy153

If you see my post a few posts up I attached...

If you see my post a few posts up I attached pictures of two templates with similar parameters to what Tom had. As you can see the mitre is quite a bit deeper with the accidental almost zero...
Forum: Framebuilders
12-16-21, 03:33 AM
Replies: 21
Views: 1,659
Posted By guy153

unterhausen : You're right that the wall...

unterhausen : You're right that the wall thickness wouldn't be needed if the program was mapping OD to OD, which is indeed what you would do if you were mitring a solid rod. I wrote my own coping...
Forum: Framebuilders
12-06-21, 02:44 PM
Replies: 8
Views: 990
Posted By guy153

I would take them off carefully with the angle...

I would take them off carefully with the angle grinder (cutoff wheel followed by flap disk) until the last bit, where a narrow belt sander (I think sometimes called a "dynafile") is better. A grinder...
Showing results 1 to 50 of 173
 


 
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