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Nothing to lose really.
- Thread starter DannyC
- Start date
DannyC
0
... one for the metal-bashers amongst us.
I used to be fearful of bending thick-walled steel tube before our late friend John Price made me a tube bender with a 10-ton bottle-jack.
As you can see..... I now bend tubes with IMPUNITY.
Here's a finished 25x2mm tube. I learned that ideally you should make these things in 2 halves, internally sleeve them and then join them together.
The 90° bend consumes 7 & 1/2" of tubing and you cannot produce a "U" with a short base section.
I used to be fearful of bending thick-walled steel tube before our late friend John Price made me a tube bender with a 10-ton bottle-jack.
As you can see..... I now bend tubes with IMPUNITY.
Here's a finished 25x2mm tube. I learned that ideally you should make these things in 2 halves, internally sleeve them and then join them together.
The 90° bend consumes 7 & 1/2" of tubing and you cannot produce a "U" with a short base section.
DannyC
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Yes, maybe just like that, but minus the toe-in/out adjusters. Others I have seen have a 2 or 3-way cage.Dan
I though there was to be a bigger diameter tube for the axle to main boom and only 2 smaller tubes to keep it all together ?
More like this with one further tube ?
Paul
DannyC
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Well today went very badly. 
Ruined one piece of my bent 25mm steel trying to get the profiles cut to meet a 32mm tube at 45° - start again with piece 2.
I got the electric hot-metal glue gun all fired up and my tungsten went up like a sparkler - No Gas! Strange because it was a 2/3 full tank when I last used it.
I put my standby 10L bottle on checked decent gas flow, sparked it up.....and couldn't see a darned thing - batteries flat in the mask.
Put new batteries in the mask, still couldn't see well enough in the poor lighting.
Gave up and came indoors.
Ruined one piece of my bent 25mm steel trying to get the profiles cut to meet a 32mm tube at 45° - start again with piece 2.
I got the electric hot-metal glue gun all fired up and my tungsten went up like a sparkler - No Gas! Strange because it was a 2/3 full tank when I last used it.
I put my standby 10L bottle on checked decent gas flow, sparked it up.....and couldn't see a darned thing - batteries flat in the mask.
Put new batteries in the mask, still couldn't see well enough in the poor lighting.
Gave up and came indoors.
DannyC
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Yes, indeed. Mask light was deployed but still not enough background illumination.
Off to get a new 20L refill today.
DannyC
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OK, it has been a while but both of the braces are now on.
The braces are at about 120° to each other so I hope they will hold the inside ends of the axle-tubes in reasonable alignment.
Next step is to attach outboard framework that hold the outboard ends in place to a frame. A decision need to be made as to whether suspension is to be a feature or not.
The eagle-eyed amongst you will notice that this cage framework is NOT central. This is purposeful as an IGH LH side aligned output will provide the INPUT to the 2WD unit.
The braces are at about 120° to each other so I hope they will hold the inside ends of the axle-tubes in reasonable alignment.
Next step is to attach outboard framework that hold the outboard ends in place to a frame. A decision need to be made as to whether suspension is to be a feature or not.
The eagle-eyed amongst you will notice that this cage framework is NOT central. This is purposeful as an IGH LH side aligned output will provide the INPUT to the 2WD unit.
DannyC
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My friend in the North snagged me a working Sturmey Archer XRF8-W hub at a cycle-jumble.
It was missing a few bits (changer, axle anti-turn lock-washers, dome nuts and needed a different sprocket), but its was otherwise in great condition. Thanks Paul!
Here it is cabled up and working. It may become the IGH for the current project.
Thank you paul.
It was missing a few bits (changer, axle anti-turn lock-washers, dome nuts and needed a different sprocket), but its was otherwise in great condition. Thanks Paul!
Here it is cabled up and working. It may become the IGH for the current project.
Thank you paul.
DannyC
Jokingly I said to Dan if I see a SA 8 speed should I buy it ? and low and behold there was one !
It had a label on saying brought in as noisy and hard to shift , they could not find anything wrong with it however had no bike to put it in so 'sold as seen ' , I assume the original bike either got another fitted or was converted to derailleur .
Glad you got it working , and such a simple fix.
All we need now is something to bolt it to
Paul
Jokingly I said to Dan if I see a SA 8 speed should I buy it ? and low and behold there was one !
It had a label on saying brought in as noisy and hard to shift , they could not find anything wrong with it however had no bike to put it in so 'sold as seen ' , I assume the original bike either got another fitted or was converted to derailleur .
Glad you got it working , and such a simple fix.
All we need now is something to bolt it to
Paul
DannyC
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The "something to bolt it to" is an ongoing Umm-ing and Ahh-ing process while I shuffle from foot to foot and suck my teeth.All we need now is something to bolt it to
I do have a stub of a previous project that "could" be pressed into service as a host for this 2WD axle malarkey. It is a suspension capable component.
I would need to work out "How" it might be pressed into service along with the IGH mid-drive.
I may be being a bit ambitious but perhaps it could (like me) be the rear end of a pantomime horse with different front ends bolted/clipped on.
I am still mulling all of this over.
You do that verbally I abuse soft woods and deploy hundreds of screws and brackets .....The "something to bolt it to" is an ongoing Umm-ing and Ahh-ing process while I shuffle from foot to foot and suck my teeth.
You heard it hear folks , Dans the a**e end of a horse .....
Paul
DannyC
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Hey I had to type that into Google to find that picture ......How kind,
I need therapy .....
Paul
DannyC
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It was amusing.
DannyC
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Started on the backplate fixing tabs today.
I cut some 3mm plates and tacked them together at the corners. I marked the centre hole for them to slip over the axle-tube.
I checked that they fitted snugly over the axle-tube.
I will shape and trim them to look smart.
A stub of 12mm bar will be tapped with M6 thread to hold a bolt to secure the backplate from turning.
I cut some 3mm plates and tacked them together at the corners. I marked the centre hole for them to slip over the axle-tube.
I checked that they fitted snugly over the axle-tube.
I will shape and trim them to look smart.
A stub of 12mm bar will be tapped with M6 thread to hold a bolt to secure the backplate from turning.
