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dynamo tower front O/S bolt arrangements

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dynamo tower front O/S bolt arrangements
JonE Offline
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#1
12-05-2021, 08:46 AM
What was the original layout for this bolt... or perhaps set screw? Was there ever a thread in the 'tower' casting?
I've JB welded a nut onto a tatty tower to see if this is more convenient for tightening/removal here, but what have others adopted here for sanity?
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Howard Wright Offline
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#2
12-05-2021, 09:02 AM
Hi Jon

Of the towers I have seen (not that many) they have all been fixed with a stud screwed into a tapped hole in the nose cone with a nut and spring washer to fit the tower.

Piggy backing on this thread (sorry Jon).  Did the tower change height during production? The reason for asking is that the one fitted on the special gives rise to a very large backlash on the dynamo drive gear.  I believe the solution is to linish the base of the tower, but the thought occurred that not all towers (or dynamo drive gears) are the same?

Cheers

Howard
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Graham Barker Offline
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#3
12-05-2021, 10:35 AM
Was there a photo to go with the original post?
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JonE Offline
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#4
12-05-2021, 11:02 AM
no - just a description in the title! front bolt O/S.. or front dynamo side. I must have lost thread there as I've resorted to bolt from underneath (which is quite handy).
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Tony Press Offline
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#5
12-05-2021, 11:19 PM
'Of the towers I have seen (not that many) they have all been fixed with a stud screwed into a tapped hole in the nose cone with a nut and spring washer to fit the tower.

Piggy backing on this thread (sorry Jon).  Did the tower change height during production? The reason for asking is that the one fitted on the special gives rise to a very large backlash on the dynamo drive gear.  I believe the solution is to linish the base of the tower, but the thought occurred that not all towers (or dynamo drive gears) are the same?'



The Spare Parts books are a little difficult to follow but all the ones I have seen had a stud with nut and washer here.

On your question I believe that the dynamo drive pinion changed form from bell to solid but the diameter remained the same ?
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Bob Culver Offline
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#6
13-05-2021, 02:24 AM
The four fastenings should locate the housing very positvely. Otherwise with every disturbance the gears have to settle again with consequent cast iron dust.
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