Hybrids in Hilly Terrain

[CaminoRacer]

I've noticed this as well.  I imagine it's programming for towing/load purposes or just the nature of larger engines.

Big pistons + more pistons = more vacuum when you shut the throttle. And more surface area along the cylinder walls to create friction.

Edit: although I'm not positive that larger pistons = more braking force if the compression ratio is the same as a smaller displacement engine.

[shp4man]

Slow down? Hit the Jake!

[FoMoJo]

It generally tracks with displacement. I mean, lots of other factors are there too, but a bigger engine means more engine braking.

Yes.  Weight, displacement and compression ratio.  My Sunbeam Tiger would skid the rear wheels if I tried to gear down into second without proper coordination of engine revs and speed.  Don't think I tried it too often.  Even third was a bit dicey if I was going a bit fast.

[Morris Minor]

Yes.  Weight, displacement and compression ratio.  My Sunbeam Tiger would skid the rear wheels if I tried to gear down into second without proper coordination of engine revs and speed.  Don't think I tried it too often.  Even third was a bit dicey if I was going a bit fast.

Sunbeam Tiger, eh?  I applaud your exquisite taste.  .
At Brit car shows people ignore the hordes of lowly MGBs & gather round the Alpines & Tigers.

[12,000 RPM]

Yes.  Weight, displacement and compression ratio.  My Sunbeam Tiger would skid the rear wheels if I tried to gear down into second without proper coordination of engine revs and speed.  Don't think I tried it too often.  Even third was a bit dicey if I was going a bit fast.

I chewed the hell out of my motorcycles back tire on my last track day. Only 649cc but I think it has 11:1 compression and only weighs 700lb with me on it. They make clutches that slip on back torque for motorcycles

[MX793]

I chewed the hell out of my motorcycles back tire on my last track day. Only 649cc but I think it has 11:1 compression and only weighs 700lb with me on it. They make clutches that slip on back torque for motorcycles

Factory tire size on a Tiger was only 155 wide.  I think they had an open diff, too.  Throw in the crappy, low-grip bias plies of the era, and it wouldn't be hard to get it to slip a tire either on acceleration or under engine braking.