which Michelin Activ rear?

Dellortoman said:
Australia has been officially metric for about 40 years
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Anyone else remember the TV commercial for the metric transition date, featuring the animated character "Dollar Bill", and the little jingle that ended with "on the fourteenth of February, 1966"? Almost 50 years now!
The crap that stays in your head .... Whoever ran that marketing programme sure knew what they were doing.

Ken
 
Yes, I remember that jingle. It was to the tune of "Click go the shears" and was to promote the decimal currency conversion.

Metrication of measurements happened a bit later. Some time in the 70's if my memory is intact. I don't recall any marketing campaign for millimetres or kilograms, but maybe I had other things on my mind when I was in my 20's  ;)
 
'Out with the pounds, shillings and the pence', remember it well, was going to Christchurch Grammar in Perth at the time. Got nothing to do with tyres; smack, smack, get back on topic ::)
 
well and truly off topic, in the now time honoured tradition. Chris, clearly it is 120/90 457mm..... 8)

as to Imperial vs metric, Canada is supposedly a long time metric country. However, most hardware stores still primarily carry fasteners sized in Imperial, lumber is still sized in Imperial, and so on.

for metric fasteners I have to use a specialty fastener supply shop.

I find converting from millimeters to fractional imperial or vice versa frustrating to do in my head, so I recently bought one of these:

http://www.leevalley.com/en/wood/page.aspx?p=66892&cat=1,43513,49782,66892

coupled with the fact the display is large enough I can actually read it, it switches easily back and forth between millimeters and decimal inches and fractional inches. It is not machine shop precise, but close enough for basic stuff in the garage.

Paul LeClair
 
RCGBOB44 said:
I thought the original triples had 4.10x18 and 4.25x18 TT100's fitted.
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I think I remember reading that the very first drum brake triples had 4.10 K81s front and rear. I never liked the very triangular profile of the K81s, just not enough rubber on the road for hard braking. I used to lock up my front wheel fairly often back then, going to rounder section Continentals gave me a lot more peace of mind in urban traffic situations. A 4.10 on the back was just ridiculous, maybe gave you better transitions on the track but it just didn't stop, and even my standard 3c used to spin the 4.25 on the back enough that I could half wear out a new tyre in just one weekend of (admittedly very spirited) riding. From a 21 year old rider  ::). Don't know how I survived those days.....

Ken
 
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