01SSAP1

I have a simple question.

Why do you get that whining noise when you go in reverse with a Manual Transmission?

Thanks

jlacoy82

I'm curious too.

CooBlueDAB

haha its the same whine in the automatic...

My girlfriend says it sounds like a toy electric car..

so, yeah, Im interested too lol.... probably the gear design though, if I had to guess, we will see though

Jonzo

I haven't heard that same whine with an automatic

Sour Diesel

I think pretty much all hondas do it. It's just the way it is.

Marauder

Its because its a straight cut gear.

Like a lot of racecars have straight cut gears, and dog box transmissions. The gears just make the whine sound.

NO, its not bad for the transmission.

94CoupeEJ1

Straight gears instead of helical. In the old days (70's) all Rally cars had straight cut gears in their trannies. Straight cut gears have less parasitical power loss and are easier to shift without the clutch. Since we don't drive very fast in reverse straight cut gears are fine for reverse. We can handle the noise at low speeds.

01SSAP1

Thanks

CooBlueDAB

just as I thought,


.............
"and now we know.... The REST of the story." lol

Kyles ej1

like the that one video thats inside a racecar and it whines hella ******* loud when he gets close to shifting?

01SSAP1

Probably part of it.

Plus the fact that those engines rev extremly high with very open exhausts.

murmur9

I've seen this question like 8 times. And this is the only one that got a straight answer. Good thread
I think pretty much *** FWD cars make that sound in reverse. My friends saturn did it when he had it in highschool. Good answer though

94CoupeEJ1

Thanks
Almost all cars have straight cut gears for reverse. Helical gears are more expensive and weaker. The car in my avatar (Lancia Stratos) had straight cut forward gears from the factory. I have a Car & Driver test (1976). Very loud.

eL

Just to anyone who said auto's don't do it... Yes, they do.

01SSAP1

Well that is interesting

I have to say it is a lot more pronounced on a Manual Tranny though.

ErMaK

My auto tranny in my 93 sedan does it, but it isnt as loud as my 91 Civic Std....its pretty loud in reverse.

Redline96LX

I think just about EVERY manual transmission car that you will see on the road will sound like a RC car in reverse, it is because of the straight teeth on the gear, and is 100% normal. From a civic DX to a ferrari, they both do that.