Conical rear hub

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Aug 23, 2015
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Hi again everyone I am considering fitting a triumph conical rear hub to my 1960 dommie frame is it just a straight forward swap or more complicated than that many thanks Chris
 
Probably need axle spacers cut to fit, to give you proper chain alignment.
 
I did say "PROBABLY", can't say for sure.

You may just get away with a hardened washer, strategically placed, on one side. The off side is the problem, and your speedo drive considerations...
 
Conical rear hub

Conical rear hub

Conical rear hub

I do lots of these. not a straight swap thats for sure, different axle diameter, brake fixing point etc
 
I realize this is an old thread,

What is the ribbed part added to the hub?
And the backing plate with the ribs?

I am thinking of using one of these on an Atlas swing arm
 
to make it look more like a Manx wheel. You can buy them as add-ons for Triumph hubs.
 
The Non Q D earlier AXLE will go in ( same lateral fit ) MUCH Stiffer . I bored the conical spacer as was conveniant . in a 68 triumph swing arm in a Triton .

Maybe you could get the alloy anodised black .
 
It is a long time since I had Triumphs, however I don't think the axle slides right through a Triumph hub, as it does on some Nortons. On some old bikes the axle is held in its lateral position by the two wheel bearings inside the hub.
 
Q D ( the old Iron drum swine ) leaves the drum / sprocket CAPTIVE .

Conical rear hub


the long scrawny axle drops right out . If you dont tighten it properly . ( Just kidding . Tho it might . )

Whereas these one pice axles , tightened down by Sampson , arnt as wobbly .
Conical rear hub


Some of em have a spacer sleeve . I bored the conical sleeve for the non Q D axle . It all fell together no trouble . though the TRIUMPH Swing Arm is ASSYMETRIC . one sides out away more .

But you can see those are Triumph engineering THREADS , whereas the Commando used a Coach bolt . In comparison .

Aledgedly the LAST of them had a external thread for a CUP bearing retainer - so they dont split . Likely retro mod'd be no trouble . Closes it rather than spreading , under duress .
 
Q D ( the old Iron drum swine ) leaves the drum / sprocket CAPTIVE .

Conical rear hub


the long scrawny axle drops right out . If you dont tighten it properly . ( Just kidding . Tho it might . )

Whereas these one pice axles , tightened down by Sampson , arnt as wobbly .
Conical rear hub


Some of em have a spacer sleeve . I bored the conical sleeve for the non Q D axle . It all fell together no trouble . though the TRIUMPH Swing Arm is ASSYMETRIC . one sides out away more .

But you can see those are Triumph engineering THREADS , whereas the Commando used a Coach bolt . In comparison .

Aledgedly the LAST of them had a external thread for a CUP bearing retainer - so they dont split . Likely retro mod'd be no trouble . Closes it rather than spreading , under duress .
thanks a ton for the photos, I have a Triumph axle, and wheel that are apart, I will have a look at it and them probably more questions,
If I understand it, the upper photo is the stock Triumph, axle and the lower is an aftermarket?
 
Q D ( the old Iron drum swine ) leaves the drum / sprocket CAPTIVE .

Conical rear hub


the long scrawny axle drops right out . If you dont tighten it properly . ( Just kidding . Tho it might . )

Whereas these one pice axles , tightened down by Sampson , arnt as wobbly .
Conical rear hub


Some of em have a spacer sleeve . I bored the conical sleeve for the non Q D axle . It all fell together no trouble . though the TRIUMPH Swing Arm is ASSYMETRIC . one sides out away more .

But you can see those are Triumph engineering THREADS , whereas the Commando used a Coach bolt . In comparison .

Aledgedly the LAST of them had a external thread for a CUP bearing retainer - so they dont split . Likely retro mod'd be no trouble . Closes it rather than spreading , under duress .
and yes that is the issue, one of the issues, the Triumph front and rear the axle is captive
 
One of my Tritons came with filed flats on the Triumph spindle to suit the Featherbed swinging arm.
 
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