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[ask] mk1 or mk2 sprung hub? #644344
03/15/16 2:38 am
03/15/16 2:38 am
Joined: Jul 2014
Posts: 45
Indonesia
Steve Adisetya Offline OP
BritBike Forum member
Steve Adisetya  Offline OP
BritBike Forum member
Joined: Jul 2014
Posts: 45
Indonesia
hi, I just bought a sprung hub on eBay.
after I won the auction, I found that mk2 is much better than mk1, but I don't know what sprung hub that I bought.
anyone know about this sprung hub?
I hope it's useable, I sold my BSA A65 rear hub for this one.







"There's a right way, a wrong way, and the Triumph way!"
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Re: [ask] mk1 or mk2 sprung hub? [Re: Steve Adisetya] #644349
03/15/16 4:28 am
03/15/16 4:28 am
Joined: Jun 2007
Posts: 5,557
Maui Hawaii
HawaiianTiger Online content

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HawaiianTiger  Online Content

BritBike Forum member
Joined: Jun 2007
Posts: 5,557
Maui Hawaii
Egad, mon, what were you thinking? Not only is the sprung hub a horrible wobble producing contraption, the first versions(which looks to me is what you have) were known to explode whilst tootling down the road causing a major league get-off.

Turner himself apologized to the public(those were the days, eh?) by saying that they were using virgin aluminum in the new hubs and no longer had to used melted down B17's for material.

Not to scare you or anything. but there are tales out there about springs flying out of the spring box and embedding into the foreheads of nubes trying to dismantle the things. Unexploded ordinance comes to mind....

I believe the lack of Concentric ribs on the outside is the key recognition feature of the mark I hub. (the ones that exploded) They're getting damned rare, ya know why. Well, if you're making a museum piece, you've scored. If you plan to ride the thing, you've got more hair than me.

Cheers,

Bill


Bikes
1974 Commando
1985 Honda Nighthawk 650
1957 Thunderbird/T110 "Flying Tiger"
Antique Fans: Loads of Emersons (Two six wingers) plus gyros and orbiters.
Re: [ask] mk1 or mk2 sprung hub? [Re: Steve Adisetya] #644357
03/15/16 6:12 am
03/15/16 6:12 am
Joined: Jan 2011
Posts: 171
Pt Augusta, Australia
M
Mossy Offline
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Mossy  Offline
BritBike Forum member
M
Joined: Jan 2011
Posts: 171
Pt Augusta, Australia
There are a few differences;
1. the rh alloy cover is plain, Mk2's had circular ribs.
2. The brake plate screws onto the hub on Mk1's, slides on on Mk2's.
3. Mk1's have a drum/sprocket, Mk2's have the drum, sprocket and bearing carrier in one casting
4. Mk1's have curved guide blocks, Mk2's have rollers.
5. Mk1's have cup and cone bearings, Mk2's have normal (although an odd size) ball races.

Most people steer clear of riding with Mk1's and only use them for display purposes.
The Mk2's are great and a worthwhile addition.

Cheers Mossy

Last edited by Mossy; 03/15/16 6:19 am.

1960 TR6B
1954 based Thunderbird Salt Lake Racer
1979 T140E
1951 6T Thunderbird Project
1981 T140E
1948 Speed Twin project
1976 Bonneville/Tiger Trail replica
2015 Bonneville T100
1949 Excelsior 197 Roadmaster project
1950 Excelsior 250 Talisman project
Re: [ask] mk1 or mk2 sprung hub? [Re: Steve Adisetya] #644362
03/15/16 7:02 am
03/15/16 7:02 am
Joined: Jul 2014
Posts: 45
Indonesia
Steve Adisetya Offline OP
BritBike Forum member
Steve Adisetya  Offline OP
BritBike Forum member
Joined: Jul 2014
Posts: 45
Indonesia
@hawaiian tiger: yeah it's very rare. since my friend have it(I dont know it's mk1 or mk2) on his 3Ta, i want it so bad on my 6T 1950. yes, I plan to ride that thing.

@mossy: sigh... so it's cleared that thing is a mk1(I hoped it's mk2), the only thing made me cheer up is that thing suit for my 6T 1950.

I hope it will not explod laugh
thank you


"There's a right way, a wrong way, and the Triumph way!"
Re: [ask] mk1 or mk2 sprung hub? [Re: Steve Adisetya] #644363
03/15/16 7:34 am
03/15/16 7:34 am
Joined: Jul 2014
Posts: 45
Indonesia
Steve Adisetya Offline OP
BritBike Forum member
Steve Adisetya  Offline OP
BritBike Forum member
Joined: Jul 2014
Posts: 45
Indonesia
what if I change the spring box with mk2?


"There's a right way, a wrong way, and the Triumph way!"
Re: [ask] mk1 or mk2 sprung hub? [Re: Steve Adisetya] #644395
03/15/16 4:04 pm
03/15/16 4:04 pm
Joined: Jan 2011
Posts: 171
Pt Augusta, Australia
M
Mossy Offline
BritBike Forum member
Mossy  Offline
BritBike Forum member
M
Joined: Jan 2011
Posts: 171
Pt Augusta, Australia
You may be able to do that? It would require at least the spring box, Mk2 brake drum and possibly the brake plate.
Cheers Mossy


1960 TR6B
1954 based Thunderbird Salt Lake Racer
1979 T140E
1951 6T Thunderbird Project
1981 T140E
1948 Speed Twin project
1976 Bonneville/Tiger Trail replica
2015 Bonneville T100
1949 Excelsior 197 Roadmaster project
1950 Excelsior 250 Talisman project
Re: [ask] mk1 or mk2 sprung hub? [Re: Steve Adisetya] #646650
04/01/16 5:50 am
04/01/16 5:50 am
Joined: Jan 2007
Posts: 550
Queensland, Australia
T
Tiger100 Online content
BritBike Forum member
Tiger100  Online Content
BritBike Forum member
T
Joined: Jan 2007
Posts: 550
Queensland, Australia
Mate dunno if this is any use but just spotted this on the bay:

http://www.eBay.com/itm/TRIUMPH-PRE-UNIT-REAR-SPRUNG-HUB-SPRING-BOX-MK-II-/331815114220?hash=item4d41b8d5ecgJdAAAOSwAuNW6xwe&vxp=mtr


Regards

Grant

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