Both these replies are exactly what I was worried about. I assumed
the car would move just fine since it moved up to a top speed of 90mph
with the original motors and braver men then me in the old days. But HP
also needs torque. I don't know if they knew what torque was in 1934
:) I do have the BHP at various RPM for the Singer motor, so if I
could find that for the Sprite I should be able to compare.
I did also think I could swap the rear axle with a Spridget rear axle
since I do happen to have one but that is a LOT more work and would
prefer to avoid it.
This could get this car on the road in no time at all, just a quickie
rebuild of a 1275 (already runs but poorly and smokes bad) and some
metal fabricating for brackets, etc. and then I could work on the
original motor at my leisure and when I have the money, yes I am afraid
that day would never come but my wife says it will.
mike
On 09/30/2011 11:20 AM, an5.sprite at gmail.com wrote:
> Mike,
>
> This sounds like a perfectly reasonable approach. The only possible problem I
> could see is that the power band on the 6 cylinder motor was at a much lower
> RPM than the 1275. If that turned into a big issue the "fix" would be a
> higher ratio rear if that is at all possible.
>
> Spouses can be pretty helpful at times!!!
>
> Steve
On 09/30/2011 10:59 AM, Curt/Nancy Arndt wrote:
> Mike,
>
> These sound like fun projects.
>
> Overall I like the way you think, but the one thing I have to add to
> your dilemma would be the question... What is the torque of the
> original 1.5 Litre Sports engine compared to the torque of the 1275 A
> Series engine? If the torque is close t,he swap should work but if
> not, this could make the difference between the car moving down the
> road and not, OR not being able to make it up any appreciable hill.
>
> Just my .02 cents.
>
> Cheers,
>
> Curt
> Carlsbad, CA
> '55 BN1, '60 AN5 :{)
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