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ROD
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« on: January 07, 2013, 04:53:46 PM » |
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Does anyone have any knowledge of types of aly,and what grade I would need for a rear hub? Im going to machine this myself to cut down on costs.
The hub will have the sprocket,disc and wheel mounted on it with a bearing on each side to fit a shaft of approx 25mm. Im roughly guessing the hub will be approx 10 inches wide. Thanks
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phunkie hiboy
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« Reply #1 on: January 07, 2013, 06:56:31 PM » |
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HE30 or T6, same grade different designation.
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Built without compromise, by the more luck than judgment method.
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Olds
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« Reply #2 on: January 07, 2013, 07:35:31 PM » |
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As ph says 6082-T6 or perhaps T651.
At 10" wide thats going to be quite a big bit of ally. Have you thought about a built up hub using steel tube and flanges?
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« Last Edit: January 07, 2013, 08:27:22 PM by Old Newbie »
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Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
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ROD
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« Reply #3 on: January 07, 2013, 08:23:25 PM » |
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No I havent. Just thought that I would 'carve' it out of a chunk! Need to go investigate this more me thinks! Never really looked at a bike hub,so just designed it the way I thought.
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hunter
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« Reply #4 on: January 07, 2013, 11:55:09 PM » |
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Rod unless you know someone who can get you a piece on the knock or discounted, It will cost you a mint  Have you thought about a single sided swingarm off a honda,They are cheap to by.  Grade of aly for a hub?  Grade of aly for a hub? |
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I
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Olds
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« Reply #5 on: January 08, 2013, 08:06:33 AM » |
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Never really looked at a bike hub,so just designed it the way I thought.
That is probably a good thing. Bike hubs are not designed to take the sort of lateral loading that the rear wheel in a reverse trike will produce |
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Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
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ROD
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« Reply #6 on: January 08, 2013, 02:38:36 PM » |
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The swing arm can only be supported either side of the diff,so need a seperate 'connection' each side. Bike swing arms are too narrow IMHO. Ive got the design of the arm ok,but need to sort out the hub.
Very basically.........I need a tube with a bearing in each end. Onto this tube will be mounted 3 discs. One disc positioned at one end of the tube for the wheel to mount to,one for the brake disc at the other end and one for the sprocket,just inside the brake disc one. I thought making this from one piece of aly would be the easiest .
Should I make it from one piece of steel? or..the 'tube' and 3 seperate 'discs' welded to the tube,then trued up on the lathe?
Unless I can get the correct diam tube in a decent grade of steel,the problem (for me)will be machining the tube from a piece of bar,cos it will need a very long boring bar.
Getting deeper into this...the disc that holds the sprocket will have to be larger diam than the brake disc mount. The sprocket will have a large diam hole in it to be able to get past the brake disc mount.
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Olds
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« Reply #7 on: January 08, 2013, 04:09:33 PM » |
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I can see what you are trying to achieve, I assume you are trying to fit a car type wheel but would not be easier to have one flange to mount the wheel on, and one to mount the sprocket and disk to. The sprocket being sandwiched between the flange and the disc. that way you get the wheel- sprocket-disc in the order required with only two flanges, only the two outside faces that require truing and no problems getting the sprocket over the disc flange.
(You could also explore the possibility of welding two car rwd type front hubs together. Just a silly thought but maybe..)
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« Last Edit: January 08, 2013, 04:26:49 PM by Old Newbie »
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Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
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ROD
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« Reply #8 on: January 08, 2013, 04:38:55 PM » |
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That might work.I see where youre coming from!
I thought of the welded hubs idea,but wouldnt work without lots of machining,so I reckon simpler to make all new.I have a hub (spitfire) that fits the wheel,so maybe able to fit and weld this on one end of the tube for the wheel mount.
The sprocket will have to be spaced away from the brake rotor to get the caliper in there.
Hmmmm..thinking about this ON .IF I could get the hubs back to back together and on a tube,it would save me a mountain of work (and money for the billet) wouldnt it?
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« Last Edit: January 08, 2013, 04:56:11 PM by ROD »
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nabsim
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« Reply #9 on: January 08, 2013, 07:08:29 PM » |
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The swing arm can only be supported either side of the diff
Is that a typo Rod? You haven't got a diff if its only one wheel have you? |
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Olds
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« Reply #10 on: January 08, 2013, 07:26:26 PM » |
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The swing arm can only be supported either side of the diff
Is that a typo Rod? You haven't got a diff if its only one wheel have you? I think he's locked it and using it as a bevel box to allow for chain drive. ' Rod I'm sure you've thought of this- mounting the sprocket to the 'outside' of the wheel and use a standard front hub . |
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« Last Edit: January 08, 2013, 07:52:27 PM by Old Newbie »
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Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
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ROD
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« Reply #11 on: January 08, 2013, 07:51:49 PM » |
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Yes,got diff Nabs,but as ON says,will be welded locked,and chain drive off one flange(Spits are independent rear ends)
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scannerzer
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« Reply #12 on: January 08, 2013, 10:49:01 PM » |
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TwistedPatience
Hero Member
Karma: 195
Posts: 3166
Teetering on the edge of insanity
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« Reply #13 on: January 09, 2013, 12:07:00 PM » |
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T6 definatly.
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"It's time to raise the Finger,
That middle digit takes your point and drives it home"
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nabsim
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« Reply #14 on: January 09, 2013, 01:59:41 PM » |
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Anaheim, it becomes clear  Grrrrrrr, soddin auto text correct rubbish. That should have said Ahah |
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