old gear mounting

[harry]

Surprising that it's splined rather than a keyway.

[Peter Parry]

Obviously a job for "No more nails" or a dab of superglue :-)

[Tim+]

Expanding foam is pretty sticky too... ;-)

Tim

[Dave Liquorice]

Not properly fixed... or just resting on the top of the frame. Even with good sized hooks I'd proably still wire across the top of the hook.

[Nightjar]

On 03/10/2012 09:14, harry wrote: ...

Splines can transmit more power.

Colin Bignell

[Jules Richardson]

Well, think of it as having ten keyways, so much stronger than a single key :-)

[Adam Funk]

I have to ask: did it fall in the 'lucky' or 'unlucky' orientation?

[Jules Richardson]

Hmm, well here's a weird one - I was looking through the pile of metal scrap that's been slowly accumulating in one of the sheds, and happened across this critter:

think the splined section of the shaft (along which the dog clutch slides) may well match the splines on the gear that I have exactly (the splines certainly do in terms of width, depth and number - but I didn't have calipers nearby so only approximated the OD with a ruler)

Of course I'm not sure if it helps me; it's probably more effort to use that - assuming it's even possible given the corrosion - than making a carrier "from scratch". I just found it interesting that I happened to have something that might be an exact match in the junk pile. It's entirely possible that the shaft and the gear came from the same piece of equipment originally, which might explain the commonality (as a manufacturer, using a few standard spline arrangements would make sense)

cheers

Jules

[Jules Richardson]

Well, other than the splined shaft that I found... I just went into town to get some OSB (except that I didn't get any in the end because prices seem to have gone up by 50% in recent weeks - wtf?) and so had a chance to wander around looking for suitable parts.

1-1/2" galvanized pipe is very close in O.D (about 1/16" too small), the nice thing there being that I could get a short section with threads at the end, and a matching pipe flange (which has four mounting holes) into which it will screw, and at least it should withstand the elements quite well.

cheers

Jules

[harry]

A single key would be stronger than those spokes. Splines are usually for something that slides axially. Wonder what is was for/came off.

[Nightjar]

One is stronger than ten?

I wouldn't want a lot of axial movement in a set of wire wheels on a car, except for when they need to come off.

Colin Bignell

[Jules Richardson]

I'm not buying that - there must be a limit to how wide a key can be, due to the diameter and curvature of the shaft; splines can get around that...

Dunno. Our place used to be a farm, so doubtless part of some implement or other. The design to me has a feel of something from the 1940's or earlier; even post-war farm equipment seems a little more refined :-)

The guy who has a cabin behind our land is the son of the couple who used to farm our place, so there's a chance that he might know - but he's just here during the summer months and I think he may have buggered off for the cold season[1] now, so I'd have to wait until spring to ask.

[1] And we're supposed to get a couple of inches of snow tomorrow now, which might mean that painting this thing and putting it up on the wall will have to wait until next year.

cheers

Jules

[The Other Mike]

It was in the lucky orientation on the wall and had been for decades, Maybe at a

9 o'clock position when it hit me - it drew blood.

[harry]

The key is in shear, the spokes are subject to bending moment.

That's axial movement then.

[Adam Funk]

Ouch! Sorry, I had to ask.