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From: Scott Dorsey on 18 Sep 2009 13:50 Jeff Strickland <crwlrjeff(a)yahoo.com> wrote: >"Scott Dorsey" <kludge(a)panix.com> wrote in message >> Jeff Strickland <crwlrjeff(a)yahoo.com> wrote: >>> >>>I drove (rode) my BMW dead-stick down a mountain road for about 7 miles. >>>Steering was no problem, brake effort was high, but not a problem. >> >> Shoulda got an E28. You get several minutes of braking with the engine >> off, courtesy of the nitrogen ball. > >I had several minutes of braking with my E36, but at 60mph deadsticking down >the hill, it goes away long before the hill is gone. > >PS >You dont get several minutes, you get several applications, and dead-stick >driving tends to use them up sooner than you might expect. When the motor is >running, I can select a gear that lets me do the same hill and use the >brakes just a few times in 7 miles, but when the engine is off, the need for >brakes is much higher ;-) When I tried it with a brand new ball, I got 26 applications. I think the manual says you are supposed to get 12. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis."
From: dsi1 on 18 Sep 2009 14:04 Scott Dorsey wrote: > Jeff Strickland <crwlrjeff(a)yahoo.com> wrote: >> I drove (rode) my BMW dead-stick down a mountain road for about 7 miles. >> Steering was no problem, brake effort was high, but not a problem. > > Shoulda got an E28. You get several minutes of braking with the engine > off, courtesy of the nitrogen ball. > --scott What is a "nitrogen ball?"
From: Scott Dorsey on 18 Sep 2009 14:23 dsi1 <dsi1(a)spamnet.com> wrote: >Scott Dorsey wrote: >> Jeff Strickland <crwlrjeff(a)yahoo.com> wrote: >>> I drove (rode) my BMW dead-stick down a mountain road for about 7 miles. >>> Steering was no problem, brake effort was high, but not a problem. >> >> Shoulda got an E28. You get several minutes of braking with the engine >> off, courtesy of the nitrogen ball. > >What is a "nitrogen ball?" It's a compressed gas reservoir that keeps the braking system up to pressure after engine power is lost. The brake system on BMWs of that era is... really German. They never use one part when they can use five instead. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis."
From: dsi1 on 18 Sep 2009 16:00 Scott Dorsey wrote: > dsi1 <dsi1(a)spamnet.com> wrote: >> Scott Dorsey wrote: >>> Jeff Strickland <crwlrjeff(a)yahoo.com> wrote: >>>> I drove (rode) my BMW dead-stick down a mountain road for about 7 miles. >>>> Steering was no problem, brake effort was high, but not a problem. >>> Shoulda got an E28. You get several minutes of braking with the engine >>> off, courtesy of the nitrogen ball. >> What is a "nitrogen ball?" > > It's a compressed gas reservoir that keeps the braking system up to pressure > after engine power is lost. > > The brake system on BMWs of that era is... really German. They never use one > part when they can use five instead. > --scott That's a good idea. I used to have a VW Rabbit that had a vacuum reservoir that looked like bunch of plastic spheres. I think it was hooked up to the emission system - not the brakes. How does this nitrogen ball work? The brake booster systems I'm familiar use the engine vacuum to multiply brake pedal force. As far as German engineering goes, I was very impressed with the rear drum brake system on a Scirocco I used to have. They replaced the standard self-adjusting drum brake wear hardware - starwheel, ratchet, linkages and springs, with a simple wedge and spring. It's a beautiful system. Mostly, I'm afraid of old-school English engineering. :-)
From: ben91932 on 18 Sep 2009 16:12
> >What is a "nitrogen ball?" > > It's a compressed gas reservoir that keeps the braking system up to pressure > after engine power is lost. Isnt the nitrogen reservoir limited to abs applications? I may be wrong, but I thought the cars with the nitrogen balls have vacuum assist as well>??? |