[alfa] RE: Zat Tensioner Vs Hydraulic in non-hydraulacmode Vs...

["Brian Shorey" <bshorey@xxxxxxxxx>]

> If the Googlemobile came out with the rubber timing belt in the
> 50's...or ever, I'd be surprised. Not the name I was looking for.

Goggomobile was the car, Google was the search engine I used to find the
reference:

http://en.wikipedia.org/wiki/Timing_belt

The first known timing belt was used in 1945 [4]
(http://www.advanceautoparts.com/howtos_tips/automedia_html/ccr/CCR20020301T
B/index.html?page=/howtos_tips/automedia_html/ccr/CCR20020301TB/CCR20020301T
B.htm). The German Goggomobile was the first mass produced vehicle to use a
timing belt[5] (http://www.motorminute.com/Service/TimingBelts.pdf) in 1950.
The first American vehicle to use a timing belt was the 1966 Pontiac
Tempest.

> Not an engineer, but logic says a double roller /  timing chain will
> last infinitely longer than a single one, and can only conclude those

Logic doesn't say it will last 'infinitely' longer.  Infinity is a very long
time..  Indefinitely, perhaps?  At any rate, Dr Tenney pointed out that
there was no drop in reliability with the single row chain vs the double row
chain.

> companies who have (perhaps reluctantly?) said, "If we can't solve the
> piece-of-shit rubber timing belt equation so's we can still make a Lot
> of money off's our customer since they seem to be a bit dissatisfied
> with this arrangement. We'll jes go back to the old tried and trued,
> buts thin it down by half so if they's don't come crawling back in a few
> months, they's certainly will within a few years oncet their
> warranties
> has eXpired".
>
> I personally will have a double, hold the small degree of HP...not to
> mention the rubber sauce.

I had to go and look it up.  He mentions 7 hp, on a 120 - 140 hp engine
that's more than 5%, not insignificant.

Wrt the rubber vs metal, I agree.  I hate the belts.

Fwiw, Dr Tenney mentions the single row chain (7 hp), removal of mechanical
fan (7 hp), and gutted generator (4-5 hp) as places to go looking for HP.

bs
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