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UNDER TANK REFLECTORS
#755751 11/11/18 3:01 pm
Joined: Apr 2017
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I am nearing the end of my 1970 T120R restoration. When I bought the bike, it did not have the under gas tank reflectors. I purchased a new set, but am unsure how they mount. For each side, I have the round housing, reflector with threaded stud and a rubber plug. I don't know what the reflector stud fastens to as the round housing is empty. I also don't understand the need for the rubber plug.
Regards
John

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Re: UNDER TANK REFLECTORS
Waterloo John #755771 11/11/18 6:27 pm
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Originally Posted by Waterloo John
For each side, I have the round housing, reflector with threaded stud and a rubber plug. I don't know what the reflector stud fastens to as the round housing is empty. I also don't understand the need for the rubber plug.


Sounds like the wrong type of reflector?
https://www.classicbritishspares.co...ket-set-82-8194-500-650-bonneville-tiger


https://thebonnevilleshop.com/trium...r-tank-reflector-assemblies-pn-82-8194a/
http://www.britcycle.com/Products/Reflectors57161&57162.htm

Last edited by L.A.B.; 11/11/18 9:09 pm.
Re: UNDER TANK REFLECTORS
Waterloo John #755783 11/11/18 8:46 pm
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IIRC, the rubber plug goes in from the rear of the housing and protrudes through the front. The chrome ring, which holds the reflecter, is then pushed over the rubber plug. Or, it may be that the rubber plug has a groove that the flange of the housing goes in. It's a bit of a bugger putting these together. P80 rubber lube helps.

Re: UNDER TANK REFLECTORS
Waterloo John #755832 11/12/18 12:58 pm
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Another example of "Do the research BEFORE you buy the product."

Re: UNDER TANK REFLECTORS
Waterloo John #755836 11/12/18 2:24 pm
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Thank you all for your replies.

I opened the link provided by LAB and these are exactly the parts I received from British Cycle Supply. I did do my research and ordered exactly what parts appeared in the parts catalogue breakdown. As it doesn't appear that I will get a full answer here, I have reached out to Mark at British Cycle for some advice.
Regards
John

Re: UNDER TANK REFLECTORS
Waterloo John #755850 11/12/18 5:38 pm
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Part number 57161 is the part original to the 1970 that I own.

Part number 57162 is the stud mounted one.

The difference is explained in the link L.A.B. posted and is shown below. I cannot imagine the push in type could vibrate free but, apparently, it did enough to require production of the alternate reflector.

http://www.britcycle.com/Products/Reflectors57161&57162.htm

From the Britcycle website: "For under tank mounting on 1970 and earlier Triumph twins, the 391-57162 reflector and associated parts noted above can be used with reflector housing bracket 83-2903, replacing original housing 82-8194 and push fit type reflector 391-57161. Appearance is identical to original, but this arrangement is much more secure against loss from theft or vibration than the original. "

I am interested to know which parts manual you used. Mine is published September 1969, #99-0903.

Re: UNDER TANK REFLECTORS
Waterloo John #755959 11/13/18 8:57 pm
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Looking at the Britcycle information it would appear that the 'improved' version would make it even more difficult to access the front tank retaining nuts than the original version. There appears to be no reason why it shouldn't work on your bike though. I took my '70 Bonnie's under tank reflectors and mounts off. They are a nuisance when working under the tank and complicate removing it. I think the bike looks better without them.


Bruce

Last edited by Bruce Martin; 11/13/18 9:04 pm.

1937 Ariel Red Hunter 500
1970 Triumph Bonneville

Making the scene with the gasoline

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