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Author Topic: Heat Sink wanted for 1971 A65 OIF Zener Diode  (Read 944 times)

Offline A10 JWO

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Heat Sink wanted for 1971 A65 OIF Zener Diode
« on: 26.01. 2018 17:43 »
Can anyone help please. Thanks
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Online JulianS

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Re: Heat Sink wanted for 1971 A65 OIF Zener Diode
« Reply #1 on: 26.01. 2018 18:39 »
It should mount on the aluminium air filter body.
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Offline a

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Re: Heat Sink wanted for 1971 A65 OIF Zener Diode
« Reply #2 on: 29.01. 2018 05:52 »
also thought in 1971 it was mounted to air box. But if you need the heat sinc 68-9428 we have them in stock.
Note prices are in AU$
https://mikesclassiccyclespares.com/product/68-9428/
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Offline A10 JWO

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Re: Heat Sink wanted for 1971 A65 OIF Zener Diode
« Reply #3 on: 30.01. 2018 18:04 »
Yes I have also heard they are mounted on the ally airbox very recently, but where exactly. I bought this bike in bits, anyone got a photo of it in place as it's not in my two manuals. My airbox is in the paint-shop at the moment. . many thanks.
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Offline duTch

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Re: Heat Sink wanted for 1971 A65 OIF Zener Diode
« Reply #4 on: 30.01. 2018 21:22 »

 I'm thinking all the ones I've seen have been on a different style heatsink (kinda cone-shape), mounted on/under the bottom triple clamp *dunno*...

Just had a search, and the noes I'm thinking are Trihard, but I've seen them on Beeza's,  Photo borrowed from ebay:
https://www.ebay.com.au/itm/TRIUMPH-bpl3-HEAT-SINK-ZENER-DIODE/152222096705?hash=item237124dd41:g:IcIAAOSwgmJXw11B
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Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
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Offline a

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Re: Heat Sink wanted for 1971 A65 OIF Zener Diode
« Reply #5 on: 30.01. 2018 23:29 »
Straight out of the 1971 workshop manual...
Hope that clears it up for you.. No heat sinc mentioned either
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Offline Topdad

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Re: Heat Sink wanted for 1971 A65 OIF Zener Diode
« Reply #6 on: 31.01. 2018 13:05 »
I didn't expect BSA to show the bigger heat sink ,one of my memories from selling them was the number of Zenner diodes that fried . certainly Dutch is right re the trumpets there's was under the steering head  it wasn't til the suplier was forced to change that a more reliable type was fitted .
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Offline duTch

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Re: Heat Sink wanted for 1971 A65 OIF Zener Diode
« Reply #7 on: 31.01. 2018 13:51 »

 
Quote
........ the ones I've seen ......

 Obviously if they were stashed on the airbox, I wouldn't see them ....I just had a look at the parts lists out of curiousity, and seems the '68 - '70 ones had a flat type one under the bottom yoke, so maybe the ones I saw had been adapted as aftermarket.
 
  Tbh, I don't care much at all, but good luck with it A10 JWO
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Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Offline A10 JWO

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Re: Heat Sink wanted for 1971 A65 OIF Zener Diode
« Reply #8 on: 31.01. 2018 15:48 »
The pictures of the air-box mounted diode tells it all and is greatly appreciated. Certainly one of the best forums about. I have no real problems when I restore complete bikes as I take photos and label parts in clean clear plastic bags. Buying one in boxes can be a pain, however I enjoy forums as well.
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