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D1 front hub
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Kirkbybil
Harrogate
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April 20, 2017 - 10:14 pm
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Hi,

I had an issue with my front wheel which just didn't seem right as the brake shoe/plate made a grating noise on left or right lock and although it ran true, on either lock it rubbed on the mudguard but I couldn't figure out why so I took it off and stripped it to check it.

When I looked at the diagram in the parts book below, I realised that the locking nut (Part no. 36) was missing, so I added it but when it is in place, the brake cover plate doesn't fit as this nut pushes it too far out.

Is this nut correct? 

Also one of the threaded ends of of the spindle is longer than the other, does the longer threaded end go on the opposite side to the brake drum?

This was all a box of bits when I got it so I never saw it all together. 

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sp_PlupAttachments Attachments
  • sp_PlupImage hub.JPG(463 KB)
  • sp_PlupImage hub-diag.jpg(143 KB)
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jolon1
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April 21, 2017 - 9:31 am
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Hi kirkbybil, Firstly very nice job on the restoration. I'm no expert on D1's, but maybe someone can confirm my findings. I presume you got the exploded view of the front wheel hub from Draganfly. The item number 36 is described as part number 90-5546 ,which I understand they no longer stock. Having researched further, I have found the part number is 90-5543 which seems to be quite a narrow nut with no protrusions. Hope this helps.  thinking

D7 & D1 Racer

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Hans Kreuzen
Queensland Australia
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April 21, 2017 - 12:15 pm
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Here are two pics that might help.

This pic is my front axle laid out the way I pulled it apart.

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  • sp_PlupImage D1-front-axle-view.jpg(240 KB)
  • sp_PlupImage D1-front-axle-view1.jpg(152 KB)

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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Kirkbybil
Harrogate
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April 21, 2017 - 8:16 pm
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Thanks all, I ground down the 'nose' end of the nut a few mm and it is much better now, the wheel runs true and no grating on my jig.

HOWEVER, when I put it back on the bike, the wheel is fine until I move the handlebars past 45 degree left or right lock. If I move it right, the tyre rubs on the left rear part of the mudguard, when I move it to left lock, the tyre rubs on the right rear part of the mudguard.  As both wheel and mudguard are attached to the forks, does that mean the forks are twisting so I need to tighten the fork top nuts more or could something else be causing that?

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Hans Kreuzen
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April 21, 2017 - 9:38 pm
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It is the sliders moving in the brass bushes, my plunger douse the same, stand in front of the bike and put the front wheel between your legs, try moving the handle bar and you will see the play in the sliders.

My tire rubs as well when I push the bike around at full lock.

You either machine new bushes to suit the worn sliders or hard chrome the sliders to suit the replacement bushes.

I would just ride it for a while.

1950 D1 plunger for daily use, Restored 1948 D1 rigid, Black 1953 D1 plunger nearly done.

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