Rear hub

[Swarfcut]

   Bergs has a Plunger Hub. The design of the dust cover is more domed because the centre tube end sticks out more than on the S/A hub. Easy to spot side by side. S/A Type is flatter. These covers are an easy push on fit, but an absolute nightmare to remove without damage, (ref Julian's earlier comment) and were considered  a disposable back in the day.

   Sub components are sometimes found  stamped with a code number to identify them in the production process, so these numbers do not appear in parts list. I found something similar on a parted off Bantam Frame Lug, the prefix identifying it as from Bantam D Range, but the part number itself appeared nowhere.

 As for Rex's conundrum, this is another problem often encountered with a bargain jumble hub. I can think of no simple way to do it without removing the concept of QD.  Epoxy and aluminium powder? Welding the splines to the drive flange and making some sort of  access bolt on or peg drive to the drum? A better wheel is easier, or simply more care taking up the drive.

 Swarfy.

[berger]

Cheers Swarfy so i have a plungy hub for sale now. i bought it years ago as a spare not knowing my hub was different to this

[berger]

i have not been to the pub for ages but today i thought cows in a field far away were sheep, girlfriend wasn't impressed because at the same time i said it was monday. anyway enough of that... i am right in thinking if i machine off the sticky out bit on my hub.... pic shown.. i can make it into the same one i have on my bike now, 54/55 swinging arm, or do the bearings sit in these different hubs at different locations

[limeyrob]

The problem with mods like this as I found with my modified front hub (luckily reversible as it was an internal spacer) is that it can also move the whole wheel over and leave you having to re-true all the spokes.

[berger]

rob erm i know i'm a lot thick but it's not even spoked. i think i need to take my wheel out and compare my hub to the one in the picture. it's getting ready for a tyre and the bike is in the kitchen having a warm so maybe a good time to study it ,.... over a gallon of black&tans and no dirty filthy fags also the part number could be 57- or 67-0250   ring a bell anyone?

[a10rgs]

Hi berger,

I think it will read PAT.No.570256 so on mine too!

Uwe

[berger]

 ahaa a10rgs that seems better , a pat number not a part number

[limeyrob]

Ha, Berger, put it down to a "senior moment" on my part. Clearly no spokes in the photo .
I'm very wary of taking metal of original parts, its too easy to take off and too hard to put back

[Swarfcut]

    All crinkle hubs use the left (brake drum side) as the primary location for the bearings and central spacer. First into the hub goes thrust washer 65 5884, in reality a ring rather than a washer, sitting on a narrow ledge. Then the bearing and locking ring. Plunger hub has a locking ring to the other bearing, S/A hubs don't, but here the centre spacer is shouldered to fit thro' the centre of the races, Plunger type just butts between the inner races. Spindle shaft diameters differ, hence different bearings for the two hubs. Bearing OD's are the same, ID's differ.

 In effect the right side race settles in the bore of the hub and finds its happy place in the S/A hub. Don't over tighten the right side locking ring on the Plunger Hub...this will load the race.

 So yes, you could machine away the unwanted internal thread, but the unmolested part is a little rarer and worth a fair wedge. Shame to modify unless you really have to. That one looks to be a good example.

 Swarfy.

[berger]

swarfy cheers , i will sit on it, now i understand or even don't understand why my one on the bike doesn't have a bearing retainer on the right hand side and the plungy one does have a retainer, pics of the different internals might help my thicko head understand       i SEEEE i think so the inner piece the spindle goes through has a shoulder on the inside and the distance piece on the spindle on the right side between bearing inner race and swinging arm keeps it all together. ,,,  wow berglar get a grip you should know these things