Shrinking dollies, or hammers, should work like tuck shrinking.
The idea is you gather all the "slack" in one place so its a hillock or a crease. You put the shrinking dolly behind it if it was raised towards you, then you dress the crown back while the serrated face of the dolly stops the...
Are you?
Interesting way of going about it.
I find a good way to learn things is that when the observed facts repeatedly contradicts what I was taught, told, or otherwise had handed down to me from on high, then the vast majority of the time, it's what I was taught that's at fault.
It's...
You might think I misunderstood the data sheet, but you'd be wrong. Everything I've read, and everything Corus (who lets face it make CFS tube) have told me says that it's annealed, and then normalised with a second heat treat. So I didn't misunderstand the data sheet, I might have been lied to...
Low carbon steel IS heat treatable.
CFS 3 BK (as milled) is "softened" to GbK by heat treating it, then a second heat treat to normalise it makes it NBK. The numbers are here...
http://www.hublebas.co.uk/CFS.pdf
You'd have to say that was softened and then hardened, and if you look up...
Work hardening can be an issue with steel and it certainly is with aluminium.
If I'm doing ally, I anneal it as soon as it starts to feel like hard work.
I made the sides of this tank oversized, and trimmed them back by 1/2" or so, and there was some evidence of splitting, probably due to...
Chunko,
A bossing mallet (to give it it's proper name) makes it all lumpy too.
The trick lies in planishing out the lumps...
I should have mentioned, it's a bit time consuming.
On the other hand, either a planishing hammer based on an air chisel, or a English Wheel will smooth the...
There's a misconception that you need all sorts of expensive equipment to shape metal.I wrote some articles about that recently, these are some of the pictures..
Specialist tools consisting of a section of tree trunk with a bowl hollowed in the end, and a lump of 3x3 with one end rounded...
"History is written by the victors". A phrase often attributed to Winston Churchill, but if he did in fact coin the expression, he neglected to add that it's rewritten by subsequent "experts".
BMW R65s like most other bikes of that age, have flexy forks. a fork brace is usually a good idea...
I have got a tube mitring video, but it was the first one I ever made, and it is bloody horrible.
I made a bunch of better quality ones about different things using my stills cam, but I'm still not over the moon with the quality.
I've got a HD camcorder now, so I just need to find the time...
Tube notchers are pretty pointless unless you have to make lots of identical notches.
Buying a good quality hacksaw frame, along with a decent file and some decent hacksaw blades will let you cut any notch you need to (which a tube notcher won't) and also allow you to do all sorts of other...
Using 1 1/4" OD 12 gauge CFS3 tube with a 1 1/4" holesaw at 150-180 rpm, it seems to work OK.
Keep the pilot drill in the hole saw. That keeps the cut out centred.
Why holesaw the end of a short piece?
Why not holesaw the middle of a longer piece?
Half the cuts on the tube, half the operations with the notcher, and probably a longer life out of the holesaw.
Typically, welding tube mitres you'd use three or four runs with MIG.
Trying to do it in one pass will only make a mess and usually resulte in more distortion.
1.6mm wall is a bit thin isn't it? Thicker wall tube would be easier to weld neatly as well as stronger.
Since the expression "cafe racer" refers to a motorcycle built in a certain style, then the phrase "cafe racer style bike" is, by definition, a tautology.
Whether you think it's the genuine article or not has nothing to do with it.