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Search: Posts Made By: guy153
Showing results 1 to 50 of 132
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Forum: Framebuilders
08-12-20, 07:52 AM
Replies: 7
Views: 246
Posted By wsteve464

You can get an approximate weight of the lugs vs...

You can get an approximate weight of the lugs vs tig. Framebuilders supply give weight measurements for the various lugs
...
Forum: Framebuilders
08-09-20, 08:21 PM
Replies: 5
Views: 186
Posted By Andrew R Stewart

Not sure production designers anticipate how far...

Not sure production designers anticipate how far their customers will "send" their bikes but I di suspect they heed how well those riders can land their bikes:) Andy.
Forum: Framebuilders
08-07-20, 04:00 PM
Replies: 7
Views: 260
Posted By unterhausen

don't forget the fragile and gaudy paint. And...

don't forget the fragile and gaudy paint. And some panto on the lugs.
Forum: Framebuilders
08-05-20, 06:50 AM
Replies: 43
Views: 927
Posted By unterhausen

If you are referencing my suggestion just to fill...

If you are referencing my suggestion just to fill the gap, it all depends on how you finish the ends. If you file them neatly with a scallop, they will look like a design choice. I can imagine...
Forum: Framebuilders
08-04-20, 05:45 PM
Replies: 43
Views: 927
Posted By Andrew R Stewart

One option is to leave the tube diameters as...

One option is to leave the tube diameters as planned but have the TT miter's ears cut flat/vertical and then have the seat stays tops butt/flow into the TT. If done well the stays flow into the sides...
Forum: Framebuilders
07-28-20, 06:30 AM
Replies: 24
Views: 539
Posted By Doug Fattic

Two pieces of 4130 tubing with a wall thickness...

Two pieces of 4130 tubing with a wall thickness of 0.120" can be used to bend/curve cut out flat plate to fit around a frame tube. The inside tube would have an OD the size of the head or seat tube....
Forum: Framebuilders
07-24-20, 08:42 PM
Replies: 24
Views: 539
Posted By Andrew R Stewart

So confusion as to why it would be assumed that a...

So confusion as to why it would be assumed that a nickel plated steel would be much easier to bend then an unplated steel of similar thickness?

I think one concern about brazing onto a plated...
Forum: Framebuilders
07-23-20, 09:12 PM
Replies: 16
Views: 424
Posted By Andrew R Stewart

bikingman- I would advise against the seat stay...

bikingman- I would advise against the seat stay attachment design you mention if you are using a lug. Why? Because the lug won't extend down to where the stays butt into the ST and you'll have only...
Forum: Framebuilders
07-23-20, 08:24 AM
Replies: 19
Views: 643
Posted By unterhausen

I'll take your word on all the tests. But I...

I'll take your word on all the tests. But I would flip the wheel just in case.

The only reasonable thing to do is file the low dropout. Pick a wheel location.
Forum: Framebuilders
07-23-20, 08:18 AM
Replies: 16
Views: 424
Posted By unterhausen

If you are using lugs, you want to get a .8/.6...

If you are using lugs, you want to get a .8/.6 seat tube. You can also get a .8/.6 seat tube and put a sleeve at the top

Some means to mark the butts is pretty important.
Forum: Framebuilders
07-23-20, 05:22 AM
Replies: 16
Views: 424
Posted By dsaul

A 650mm long 28.6 9-6-9 tube is not intended to...

A 650mm long 28.6 9-6-9 tube is not intended to be a seat tube. That tube is meant to be used for a top tube or down tube. It could be used as a seat tube, as long as you can cut it to length and...
Forum: Framebuilders
07-15-20, 02:10 PM
Replies: 7
Views: 414
Posted By dsaul

I don't know about other suppliers, but Paragon...

I don't know about other suppliers, but Paragon press fit bottom brackets are all supplied .5mm undersized and need reaming regardless of weld distortion.
Forum: Framebuilders
07-14-20, 09:25 AM
Replies: 7
Views: 432
Posted By unterhausen

they aren't structural. One issue with bridges...

they aren't structural. One issue with bridges on a steel bike is that putting them in almost always pulls the dropouts together. Heating the outside of the stay will ameliorate that.

Does your...
Forum: Framebuilders
07-08-20, 10:00 PM
Replies: 20
Views: 1,000
Posted By TenGrainBread

A $500 upcharge for 631 vs. double-butted 4130...

A $500 upcharge for 631 vs. double-butted 4130 Taiwanese tubing is ridiculous.
First of all, a comparable double-butted 4130 tubeset made in Taiwan for Nova Cycle Supply, for example, costs around...
Forum: Framebuilders
07-07-20, 05:30 AM
Replies: 9
Views: 638
Posted By Doug Fattic

Probably because your pictures are too large. On...

Probably because your pictures are too large. On my Mac I put them on my desktop and then downsized them in the tools section to a width/height of 20/15. Once they are downsized I can drag and drop...
Forum: Framebuilders
07-04-20, 07:12 PM
Replies: 4
Views: 412
Posted By unterhausen

It's a fatigue crack, they go whichever direction...

It's a fatigue crack, they go whichever direction is easiest.

I have to say I have never seen a failure there.

There are plenty of examples of broken Ti. Usually there is some kind of a...
Forum: Framebuilders
07-04-20, 02:15 PM
Replies: 15
Views: 637
Posted By unterhausen

I was guessing the light side was the top. Just...

I was guessing the light side was the top. Just easier to do the bottom. Could have used a bit more filler, but this looks like whoever did it knew what they were doing
Forum: Framebuilders
07-04-20, 07:44 AM
Replies: 15
Views: 637
Posted By unterhausen

What's the other side look like? I'm having...

What's the other side look like? I'm having trouble telling how far into the tube that is. I'm sure they have had the occasional failure there, a lot of the people doing brazing were relatively...
Forum: Framebuilders
07-03-20, 05:29 AM
Replies: 9
Views: 638
Posted By Tandem Tom

Tomorrow's the Day!

My plan is to build up my new frame tomorrow and ride to a family gathering. I applied Framesaver a few days ago and yesterday I did some preliminary soldering of the lighting system.
I was going to...
Forum: Framebuilders
06-27-20, 05:53 PM
Replies: 6
Views: 568
Posted By Tandem Tom

Lug lining!!

https://cimg5.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1000/img_20200627_100830_85ded8a024490f5d7a9b1179d37a8219e5cd7c67.jpg
Today, thanks to Brian Chapman's expertise, I learned about a Fluid...
Forum: Framebuilders
06-27-20, 06:32 AM
Replies: 12
Views: 806
Posted By Tandem Tom

Guy153 That's neat! I saved that pic!!

Guy153
That's neat! I saved that pic!!
Forum: Framebuilders
06-24-20, 08:47 AM
Replies: 38
Views: 2,339
Posted By Andrew R Stewart

I just did a front drop out to fat blade a few...

I just did a front drop out to fat blade a few weeks ago. Here's a shot of my results. Andy...
06-23-20, 11:06 PM
Replies: 19
Views: 897
Posted By Kevinx88

I find itís not too bad fixing bikes. Just a...

I find itís not too bad fixing bikes. Just a matter of having the tools to do the job.
Forum: Framebuilders
06-21-20, 06:44 PM
Replies: 12
Views: 859
Posted By nismo82

Thanks for the comments everyone. We usually...

Thanks for the comments everyone. We usually spend one day per week filming a project. It’s pretty amazing to watch him work in real time. I haven’t seen him get stumped by any fabrication problems...
Forum: Framebuilders
06-21-20, 03:17 AM
Replies: 78
Views: 3,508
Posted By mikeread

I am going to enjoy this build, please keep us...

I am going to enjoy this build, please keep us updated?

Since it is just for one person + load could you make the chassis much narrower to save weight and resist torsion.

This would give you...
Forum: Framebuilders
06-20-20, 03:00 PM
Replies: 12
Views: 859
Posted By unterhausen

he did the same thing with the stem. Only...

he did the same thing with the stem. Only fixture was to hold the bar tube on to the extension tube
Forum: Framebuilders
06-20-20, 08:11 AM
Replies: 12
Views: 859
Posted By Andrew R Stewart

I find Paul's vids to be very interesting to...

I find Paul's vids to be very interesting to watch. It's a pleasure to see someone go at a project with such a relaxed confidence and what at face value seems little planning yet actually because of...
Forum: Framebuilders
06-19-20, 09:24 AM
Replies: 78
Views: 3,508
Posted By wsteve464

Based on this and the overall weight you have to...

Based on this and the overall weight you have to pedal I'd seriously think about about a 3 wheeler so I could hook up a motor. Use a cheaper suspension fork in the front and a trailing arm suspension...
Forum: Framebuilders
06-19-20, 07:09 AM
Replies: 1
Views: 438
Posted By ponchotempest

"In Rod We Trust" (MTB Fork)

This project started life as an old Marzocchi Super T fork with 30mm stanchions and a 20mm thru axle. I ordered a 6ft roll-wrapped CF tube from Dragonplate (1" ID, 3/32" thick) with an OD that is...
Forum: Framebuilders
06-18-20, 03:28 AM
Replies: 78
Views: 3,508
Posted By MrInitialMan

Velo: Thus far, thus bonkers

http://www.mrinitialman.com/StandAlones/Velomobile/carcycle_design.xhtml


So, this page shows the general shape I'm going for, the general length and width (not height yet), and some of the front...
Forum: Framebuilders
06-15-20, 01:20 AM
Replies: 12
Views: 859
Posted By nismo82

Paul Brodie has a YouTube Channel

I just wanted to pass along that Paul Brodie has started a YouTube channel about bicycle framebuilding (and a few motorcycle projects). You can find it here: www.youtube.com/paulbrodie

Full...
Forum: Framebuilders
06-10-20, 11:09 PM
Replies: 67
Views: 14,755
Posted By helixbikes

2020 Update

Any news, Darth Lefty?

After a year of riding, the bamboo poles started coming loose from the casting-tape lugs from the monster-cross bike I previously posted the photo for. First the top-tube...
Forum: Framebuilders
06-10-20, 03:26 PM
Replies: 17
Views: 1,226
Posted By Andrew R Stewart

I'll add that having built for others without...

I'll add that having built for others without insurance coverage is plain wrong, to your family and your customers. I assume that you never sought out advice from a lawyer or accountant, or you...
Forum: Framebuilders
06-08-20, 06:53 PM
Replies: 8
Views: 831
Posted By Le Mechanic

Looking good! I built something similar a couple...

Looking good! I built something similar a couple of years ago. 650b klunker with a fork that I wanted to look like a mid 70's Redline type. It was my first fork build, so those early wishbone style...
Forum: Framebuilders
06-03-20, 04:49 PM
Replies: 19
Views: 1,313
Posted By Cynikal

I think you are missing an opportunity here. Why...

I think you are missing an opportunity here. Why not install the internals of a pump into the seattube with an external hose. Just loosen the seat binder bolt and use the seat to pump.
Forum: Framebuilders
05-30-20, 06:54 PM
Replies: 23
Views: 1,285
Posted By wsteve464

If the longer plug doesn't work cut the steerer...

If the longer plug doesn't work cut the steerer near the top, and add extension from part of another steerer tube with an internal sleeve and have it tig welded. If the weld bead is too high you can...
05-23-20, 11:42 PM
Replies: 27
Views: 1,022
Posted By DrIsotope

The only way any mask is going to give you more...

The only way any mask is going to give you more air is if it's hooked to a tank on your back. And that tank is filled with pressurized air.

I don't wear a mask on the bike now, and will not wear...
Forum: Framebuilders
05-23-20, 08:01 PM
Replies: 8
Views: 825
Posted By mstateglfr

dzb tubing is for gravel bikes, mtb, at, etc. ...

dzb tubing is for gravel bikes, mtb, at, etc.
its basically tubing that will allow the down tube to not neenot external gusset while still passing some Euro resting standards.
Consider it beefy...
Forum: Framebuilders
05-19-20, 03:40 PM
Replies: 31
Views: 1,473
Posted By wsteve464

If you are planning on building frames in the...

If you are planning on building frames in the future I'd keep the frame even if it was to cut up the tubing to practice brazing.
Forum: Framebuilders
05-18-20, 04:09 AM
Replies: 410
Views: 250,666
Posted By mikeread

No 3 finished and assembled

Frame No 3 finished. It is pretty much the same geometry as the last one (pics a few posts back) but I aimed for this one to be a bit more of an all day distance machine. I dropped the seat angle...
Forum: Framebuilders
05-13-20, 04:20 PM
Replies: 410
Views: 250,666
Posted By Andrew R Stewart

Here's a shot before I finalize the set up. The...

Here's a shot before I finalize the set up. The bike rides pretty well, the old bike's shimmy is seriously reduced and I like the cornering feel more. Next is those tiny tweaks, casing trimming, bar...
Forum: Framebuilders
05-12-20, 07:30 PM
Replies: 12
Views: 733
Posted By Andrew R Stewart

One way to find out if a crack is present is to...

One way to find out if a crack is present is to first clean off the outside (medial blasting works really well and gives a pretty consistent surface texture) then add some dirty ATF to the insides (I...
Forum: Framebuilders
05-05-20, 03:35 AM
Replies: 50
Views: 5,898
Posted By mikeread

The original plan was for the frame to be orange...

The original plan was for the frame to be orange with small black areas. After spraying it orange, it was a bit 'too orange' so I added more black than originally intended. Not sure if I did the...
Forum: Framebuilders
05-04-20, 08:01 AM
Replies: 50
Views: 5,898
Posted By mikeread

I thought the clearcoat would help but not got...

I thought the clearcoat would help but not got that far yet.

Bikes are stored in the house - had that written into a pre-nup :-)
Forum: Framebuilders
04-30-20, 09:59 PM
Replies: 5
Views: 441
Posted By bulgie

The chain doesn't touch the chainstay. What you...

The chain doesn't touch the chainstay. What you need clearance for is the freewheel teeth, and only when removing/installing the wheel.

The seatstay does come close to the chain, on a properly...
04-30-20, 01:40 PM
Replies: 162
Views: 11,526
Posted By slowgo

Got my Cinelli Vigorelli Road built up. Only have...

Got my Cinelli Vigorelli Road built up. Only have about a mile on it so far, but feels great. Be riding on a long ride Saturday. ...
Forum: Framebuilders
04-29-20, 08:20 PM
Replies: 410
Views: 250,666
Posted By Andrew R Stewart

My newest finished frame. A great paint job by...

My newest finished frame. A great paint job by Todd, as usual. He's a car guy and I wanted a Gulf Ford GT look in my usual pattern. I think he hit the colors really nice.

This is my station wagon....
Forum: Framebuilders
04-22-20, 11:21 AM
Replies: 82
Views: 8,632
Posted By unterhausen

You can get really good in a few months of doing...

You can get really good in a few months of doing it full time. On technical subjects, I like the rule of thumb that it takes 5 years to become an expert, because that seems better than no rule. In...
Forum: Framebuilders
04-20-20, 07:10 PM
Replies: 7
Views: 713
Posted By TiHabanero

Sure is addictive. Although I told my wife this...

Sure is addictive. Although I told my wife this is the last one, I am already thinking about what to build next. I have too much fun coming up with the design and putting it together to just give it...
Forum: Framebuilders
04-18-20, 10:11 AM
Replies: 8
Views: 946
Posted By Andrew R Stewart

To add more- Having used all the common tube...

To add more- Having used all the common tube brands I have not noted any construction/frame building differences between tubes of similar grade. Their tensile strengths, ability to cut and braze (I...
Showing results 1 to 50 of 132
 


 
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