RPM - anyone tried?

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robkirk
Posts: 3
Joined: Wed Jan 29, 2020 9:59 pm

RPM - anyone tried?

Post by robkirk » Wed Mar 25, 2020 9:39 am

Hi there

I have a Puretech 82. Having never even owned a petrol car before, I'm clueless as to whether I'm driving it gently or harshly and I'm particularly interested in what RPM the car is doing at 70mph? Has anyone else tested it and know?

Thanks
Rob

Puretech 82 Feel Edition (2018)

IMG_20200314_093915.jpg


routemaster1
Posts: 118
Joined: Tue Mar 26, 2019 3:43 pm

Re: RPM - anyone tried?

Post by routemaster1 » Wed Mar 25, 2020 11:04 am

This will vary widely. Most small cars with petrol engines do ~23mph/1000rpm in top gear, but there are big exceptions. I have a 110bhp petrol C3 with a 6 speed, and that does ~29mph/1000 rpm in 6th gear, which equates to ~2.,400 rpm at 70mph. However, last week, I had a C3 Aircross loan car (which I assume is an 82bhp car, as it didn't appear to have a turbo), and this was very low geared at under 20mph/1000rpm. This equates to ~3,700rpm at 70mph. This means it is revving ~50% faster than my C3. (All subject to the accuracy of rev counter and speedo)

hellooo
Posts: 23
Joined: Tue Sep 04, 2018 5:57 pm

Re: RPM - anyone tried?

Post by hellooo » Thu Mar 26, 2020 5:30 pm

I had a C3 courtesy car with the same engine and it seemed to be pulling around 20 per 1000 in top. Gearing was 5, 9, 13, 16, 20 or thereabouts. If both the standard C3 and C3 Aircross have similar gearing, it is likely that the Cactus with same engine and gearbox combination does. Assuming that the wheel rotation circumference is close.

BEN99W
Posts: 6
Joined: Sat Feb 01, 2020 5:41 pm

Re: RPM - anyone tried?

Post by BEN99W » Mon Mar 30, 2020 6:25 am

If you want to add a rev counter to your car you can get a head up display (HUD) for about 30 quid which will project engine speed as well as any other info you may want to add to your windscreen.
Scosche make one which you can buy in halfords which I've been tempted to fit, because like you I find it odd not having a rev counter. The flat desktop of the cactus looks well suited to it and citroen were one of the first manufacturers to fit HUD so I feel it even more justified.

Ben

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