DU-42 Headlamp question

Information relating to the Matchless G3 or AJS Model 16 350cc Heavyweight
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Aussie_G3L
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Location: Canberra, Australia

DU-42 Headlamp question

Post by Aussie_G3L »

I have a DU-42 6 1/2" Headlamp shell and front rim with bottom clip.

The reflector is damaged (scratched/rusted) and there is no glass or lamp bulb.

I am considering ordering a flat surface light. Like the ones here
https://www.ebay.co.uk/itm/144112275901

I am assuming this item is held in the front rim with clips? Can someone confirm?

I have found these here:
https://www.britcycle.com.au/product/lu ... x5-500291/

Cheers

Al
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dave16mct
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Re: DU-42 Headlamp question

Post by dave16mct »

Yes that should be OK. I fitted the domed type and 'W' clips from the club. The problem I had was fitting the new rim to the old headlamp shell. It was just too small. I had to grind the inside of the rim with a small grindstone in my pillar drill until it went on (very tight!)
Dave.
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clive
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Re: DU-42 Headlamp question

Post by clive »

The clips look right. The original WD G3 would not have been fitted with a pre focus bulb so you may need to get the bulb holder as well as the reflector and glass.
clive
if it ain't broke don't fix
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Rob Harknett
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Re: DU-42 Headlamp question

Post by Rob Harknett »

Make sure you have the correct rim. A flat glass rim will have a U profile, the bottom of the U resting on the flat glass. A domed glass rim will have half a U profile, the domed glass fitting inside the half U profile. I use green house glass W clips, they are much cheaper and strong stainless steel.
https://www.ebay.co.uk/itm/324755856214 ... SwruxhGxz3
Aussie_G3L
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Re: DU-42 Headlamp question

Post by Aussie_G3L »

clive wrote: Tue Sep 28, 2021 9:07 am The clips look right. The original WD G3 would not have been fitted with a pre focus bulb so you may need to get the bulb holder as well as the reflector and glass.
Clive, it appears the flat glass units have the reflector attached, almost like a sealed beam unit. So I just need to buy a BPF bulb holder to go with it.

Cheers

Al
Aussie_G3L
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Posts: 25
Joined: Tue Jul 20, 2021 8:39 am
Location: Canberra, Australia

Re: DU-42 Headlamp question

Post by Aussie_G3L »

Rob Harknett wrote: Tue Sep 28, 2021 9:56 am Make sure you have the correct rim. A flat glass rim will have a U profile, the bottom of the U resting on the flat glass. A domed glass rim will have half a U profile, the domed glass fitting inside the half U profile. I use green house glass W clips, they are much cheaper and strong stainless steel.
https://www.ebay.co.uk/itm/324755856214 ... SwruxhGxz3
Rob, I will have to have a look at my head lamp rim in the morning and check. Thanks for letting me know.

Cheers

Al
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