XPost: alt.home.repair   
   From: michael.trew@att.net   
      
   On 3/3/2022 17:38, The Real Bev wrote:   
   > On 03/03/2022 12:59 PM, Jacob Jones wrote:   
   >> On Fri, 04 Mar 2022 07:49:46 +1100, Bob F  wrote:   
   >>   
   >>> On 3/3/2022 12:03 PM, micky wrote:   
   >>>> In alt.home.repair, on Thu, 3 Mar 2022 12:47:28 -0600, Paul in Houston   
   >>>> TX  wrote:   
   >>>>   
   >>>>> micky wrote:   
   >>>>>> Is red-lining worse, better, or the same when the engine is driving   
   >>>>>> the   
   >>>>>> wheels as when the wheels are driving the engine?   
   >>>>>>   
   >>>>>> I use the engine to slow down when going down hill, and today, for   
   >>>>>> example, I put the ATransmission into 2nd and then engine went   
   >>>>>> briefly   
   >>>>>> to 5500, the apparent red line. For several seconds was at 5000 and   
   >>>>>> even longer at 4500.   
   >>>>>   
   >>>>> I did that exiting the freeway in my last Toyota.   
   >>>>> It sucked a valve into the combustion chamber and broke a piston rod   
   >>>>> destroying the engine. I gave it away to a needy person who installed   
   >>>>> a   
   >>>>> used engine and ended up with a nice car.   
   >>>> So you're suggesting I shouldn't do it?   
   >>>> Unless your freeway was going very steeply down hill, I would think you   
   >>>> came close to the redline even less time than I have!!   
   >>>> This is a 2021 or 2022 Citroen C-3. A rental with only 9000 miles on   
   >>>> it, so it must be new. I think I bought the insurance, but regardless,   
   >>>> I don't want to hurt the car. mAYBE I shouldnt go lower than 3rd gear   
   >>>> and rely on the brakes for anything more.   
   >>>   
   >>> A motorcycle shop owner heard me downshift to slow as I approached his   
   >>> lot, and immediately told me that breaks were a lot cheaper to replace   
   >>> than engine and clutch.   
   >>   
   >> Rather a silly comment if you end up crashing because the brakes overheat   
   >> and you can't stop.   
   >   
   > If that's happening you DESERVE to crash.   
   >   
   > Only once -- the very first time I drove down a mountain road -- did my   
   > brakes get too hot to stop as quickly as I wanted. Lesson learned.   
      
   That's a pretty rare occurrence these days with disc brakes; many cars   
   now have rear disc brakes also.  When I first drove a car (recently)   
   with 4 wheel manual drum brakes, I quickly learned why people   
   (especially older drives) teach you to pulse the brakes on steep hills.   
      
   When you overheat those old drum brakes, which isn't hard to do, you   
   might not be able to stop... especially if they get hot enough to   
   vapor-lock the brake fluid near the wheels.  When I drive that 60's car   
   now, on a steep couple mile hill near my house, I put the 3 speed auto   
   into second gear, rev-matching a bit before it downshifts.  Fortunately,   
   it holds a steady 40 MPH in 2nd gear, and I don't have to tap the brakes   
   once on that hill.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)