Lotus Elan

RPM at a true 60 MPH

PostPost by: TBG » Fri May 14, 2021 8:27 am

I have no idea why none of you have come up with the correct answer. RPM at a true 60RPM is 60! Do try to keep up you lot!!

PS have you ever seen anything as ugly as a MiniCountryman?

20180605_181732.jpg and
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PostPost by: gherlt » Fri May 14, 2021 10:39 am

Yes. Much worse.
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PostPost by: TBG » Fri May 14, 2021 12:05 pm

Gosh that is truly terrible - but that awful Mini is an everyday car for those with poor eyesight....................
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PostPost by: richardcox_lotus » Fri May 14, 2021 3:54 pm

gherlt wrote:Yes. Much worse.
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Aaargh! My eyes !!!!
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PostPost by: tdskip » Fri May 14, 2021 4:52 pm

lotusfan wrote:I don’t mean to be picky Mr tdskip but could you correct the thread title to read 60 MPH please. My OCD can’t stand it anymore!!


Done!

:D
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PostPost by: brandonsan » Fri May 14, 2021 4:56 pm

What will a 3.55 rear reduce the RPM to @ 60 MPH ?
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PostPost by: lotusfan » Fri May 14, 2021 5:23 pm

[/quote]

Done!

:D[/quote]

I feel so much better now, thank you.
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PostPost by: brandonsan » Fri May 14, 2021 7:37 pm

What would the RPM at 60 MPH drop to with a 3.55 differential ?
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PostPost by: 1owner69Elan » Fri May 14, 2021 8:13 pm

brandonsan wrote:What would the RPM at 60 MPH drop to with a 3.55 differential ?


~3145 rpm.
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PostPost by: brandonsan » Fri May 14, 2021 9:01 pm

1owner69Elan wrote:
brandonsan wrote:What would the RPM at 60 MPH drop to with a 3.55 differential ?


~3145 rpm.

Thanks !
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PostPost by: TBG » Fri May 14, 2021 10:21 pm

and with 3:1 2700 - tee hee. Way to go.........................!!

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PostPost by: tdskip » Fri May 14, 2021 10:57 pm

Changing the differential ratio is an interesting idea.

Right now my girlfriend and I both reach for the nonexistent 5th gear because the car pulls so quickly through 1st to 4th. There are some amazing road trips and great driving roads here in SoCal but you cannot avoid major freeways to get started.

I would trade off a bit of first gear shove for more relaxed high speed touring.
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PostPost by: The Veg » Sat May 15, 2021 12:23 am

tdskip wrote:Right now my girlfriend and I both reach for the nonexistent 5th gear because the car pulls so quickly through 1st to 4th. There are some amazing road trips and great driving roads here in SoCal but you cannot avoid major freeways to get started.


Same here. I've only driven my Plus 2 a hundred-odd miles as yet but I constantly find myself wanting a fifth gear. I've had it up to 90+ in fourth and driven for under an hour keeping up on a major freeway but having fifth would still be an improvement. North Georgia has some really *amazing* twisties too, but I have yet to take this car up there. Soon!
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PostPost by: 1owner69Elan » Sat May 15, 2021 12:47 am

IMG_6247.jpeg and
2620 rpm @ 60 mph
3060 rpm @ 70 mph
3495 rpm @ 80 mph
3935 rpm @ 90 mph

3.94 diff ratio (effective) - uncompromised acceleration
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PostPost by: tdskip » Sat May 15, 2021 2:13 am

So now I have to do is track down a gearbox, figure out how to change the question mechanism, get the new engine and gearbox out, remove the new good gearbox, fit the new good five-speed, and then reinstall and put everything back up.

Sounds like 90 minutes of work. Ha.

I suppose I should keep in mind that I’m only considering doing this because I absolutely love the car.
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