Shifting into gear while moving???

Davey

Yes, if you double clutch and rev match so the synchros don't have to be overworked, you can downshift into 1st at 30, but if you did that then you won't feel any additional resistance and you wouldn't be posting this thread.

The point was that he shouldn't be cramming the trans into any gear at any mph because yes, it's hurting the car.

edub370

double clutching really hasnt been needed since like the 40's. the advent of synchros eliminated that from common practice. theory being, double clutching matched gear speeds. but now u got synchros to do that for u

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robones

Davey

Correct, the synchros do that. And in doing that, they wear out. Especially if you are trying to cram the car into 1st gear at 30 mph, or 2nd gear at 60 mph. The more they have to synchronize the speed due to different rotational speeds, the more they have to work, which is why it's difficult to push the shifter into 2nd at 60 mph, etc.

So you can either not shift into 2nd at 60/1st at 30, or you can double clutch and rev match to assist the synchros and avoid excessive wear, or you can wear out your synchros, it's up to you.