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From: ED on 9 Jul 2010 16:49

"Don Stauffer" <stauffer(a)usfamily.net> wrote in message
news:4c3730c9$0$48226$815e3792(a)news.qwest.net...
> hls wrote:
>>
>> "Jesse" <sumin(a)telus.net> wrote in message
>>>>
>>> Thanks everyone, I'll give this up. I hoped that there was some
>>> correlation of mpg to rpm.
>>
>> No, there isnt. For your daughter, you want something very dependable,
>> with reasonably good mileage, that handles well and can keep her
>> relatively
>> safe. I suggest you forget the mpg to rpm ratios.
>
> I would disagree. The way to improved milage is to maximize throttle
> opening while minimizing rpm. Keep in highest gear possible.
>
> The throttle opening thing also requires one to stay below the power
> enrichment point. This comes at somewhere around 3/4 throttle. Below
> power enrichening, higher throttle settings burn fuel more efficiently
> because the effect compression ratio is higher (partial throttle lowers
> compression ratio).

There's an old saying:: "If you have nothing to sell, dazzle 'em with BS"


From: Don Stauffer on 10 Jul 2010 10:07
E. Meyer wrote:
> On 7/9/10 9:23 AM, in article 4c3730c9$0$48226$815e3792(a)news.qwest.net, "Don
> Stauffer" <stauffer(a)usfamily.net> wrote:
>
>> hls wrote:
>>> "Jesse" <sumin(a)telus.net> wrote in message
>>>> Thanks everyone, I'll give this up. I hoped that there was some
>>>> correlation of mpg to rpm.
>>> No, there isnt. For your daughter, you want something very dependable,
>>> with reasonably good mileage, that handles well and can keep her relatively
>>> safe.
>>> I suggest you forget the mpg to rpm ratios.
>> I would disagree. The way to improved milage is to maximize throttle
>> opening while minimizing rpm. Keep in highest gear possible.
>>
>> The throttle opening thing also requires one to stay below the power
>> enrichment point. This comes at somewhere around 3/4 throttle. Below
>> power enrichening, higher throttle settings burn fuel more efficiently
>> because the effect compression ratio is higher (partial throttle lowers
>> compression ratio).
>
> ... But the guy is trying to pick one car over another. How does this help?
> Is there a table of optimized throttle/rpm somewhere?
>
As so frequently happens in newsgroups, the thread is morphing.
From: hls on 10 Jul 2010 11:42

"Don Stauffer" <stauffer(a)usfamily.net> wrote in message news:4c387e85$0
>>
> As so frequently happens in newsgroups, the thread is morphing.

Past time to let this one die.
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