Is a tachometer required on a CAR ?

vrprabhu · 5th March 2021, 18:23

Vanam,

Refer to post #72 (two posts above your post) which tells why.

There was an occasion when I almost double cranked (driving it first time, not my car, and super silent cabin even after start) only to realise it was already running - by looking at the tacho!

I guess the tacho will also enable you to gauge the speed vs. engine rpm co-relation (my driving instructor had drilled it that the ratio is speed = rpm*3/100 would be ideal). Don't know if this is really true or scientific, but is more or less what I follow.

5th March 2021, 18:23	#76
vrprabhu Senior - BHPian Join Date: Oct 2008 Location: ?? Posts: 1,316 Thanked: 1,139 Times View My Garage	Re: Is a tachometer required on a CAR ? Vanam, Refer to post #72 (two posts above your post) which tells why. There was an occasion when I almost double cranked (driving it first time, not my car, and super silent cabin even after start) only to realise it was already running - by looking at the tacho! I guess the tacho will also enable you to gauge the speed vs. engine rpm co-relation (my driving instructor had drilled it that the ratio is speed = rpm3/100 would be ideal). Don't know if this is really true or scientific, but is more or less what I follow. Last edited by vrprabhu : 5th March 2021 at 18:24. Reason: Confirmed reference*
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