[uucdigest] Saturday, February 12 2000 Volume 03 : Number 251 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | For all available Digest commands including unsubscribe/subscribe, | visit the BMW UUC Digest page: http://www.uucdigest.com | Send SUBMISSIONS to [EMAIL PROTECTED] | Complaints? Send 'em to [EMAIL PROTECTED] if you must. | Visit http://www.bubbaclub.com | www.bimmers.com - "serving enthusiasts on the 'net" | Visit http://www.bimmer.org - ultimate BMW bulletin boards! | Subscribe to the Zionsville Autosport Parts Digest: | http://www.zionsvilleautosport.com/majordomo.htm ����������������������������������������� In this BMW UUC Digest: Re: [uuc] Electric windows malfunction! Re: [uuc] Stupid!! - Really? [uuc] Re: Physics [uuc] Porridgehead Rules Re: [uuc] Stupid!! - Really? [uuc] E30 woes, Tailshaft FS Re: [uuc] Re: Physics [uuc] More tire questions Re: [uuc] More tire questions Re: [uuc] wrecks and force (was: Re: Stupid!! - Really?) [uuc] People can't drive [uuc] Ultimate Short Shifter ---------------------------------------------------------------------- Date: Sat, 12 Feb 2000 18:05:52 -0500 From: "Gary Derian" <[EMAIL PROTECTED]> Subject: Re: [uuc] Electric windows malfunction! Isn't there a rear lockout button? Check that. Gary Derian <[EMAIL PROTECTED]> > Dear Digesters, > > My rear electric windows failed to operate yesterday. Can anyone suggest > what I could look for for a quick DIY fix or do I have to send it in to a > workshop for a detailed analysis and fix (read: more expensive solution)? > > Details: > Both rear windows failed at the same time. There were no motor problems > associated with the 2 rear windows before. They are stuck in the up/closed > position. Switches at the rear door and the ones near the gear lever dont > seem to work the windows. No accidents or passengers using the rear seats at > all. > > Suspect: > Connection problem? Fuse blown? Motor or switch problem? (But unlikely since > both left and right failed simultaneously) > > Any ideas and words of wisdom are appreciated. Thanks all! > > dave > '95 E36 325i (4-door) > ______________________________________________________ > Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Sat, 12 Feb 2000 17:33:26 -0500 From: "Gary Derian" <[EMAIL PROTECTED]> Subject: Re: [uuc] Stupid!! - Really? I later qualified the statement by noting that the crash was into a solid object or equivalent. A 45 mph T-bone is like 22.5 into a solid. I'm glad your wife was safe. She did suffer cracked ribs though. An airbag would have reduced that, which was my point. At higher speeds, a single diagonal belt only starts to cause other injuries. Gary Derian <[EMAIL PROTECTED]> > At 11:28 AM 2/11/00 -0500, Gary wrote: > >In frontal impacts above 30 mph, a single diagonal seat belt will damage > >your ribs and internal organs. Also your head will hit the wheel and your > >neck will get severely strained. > > Absolute statements are ripe for rebuttal. My wife, 5'2", 130#, 53 years > old, had a relatively "serious" collision last year: driving to > work(school teacher), country road, 55mph, 70 year-old man pulled out in > front of her from a side road. Estimated speed of her '84 533i at impact > was 45mph. She t-boned the other car at the B pillar, totaled both cars. > She sustained two cracked ribs, and a cut knee where it impacted the > underside of the dash. No other injuries. No internal, no neck, no > headaches, etc. No airbags. We felt very fortunate, and I went out and > bought another E28. > > Mark Selleck > '85 535i ------------------------------ Date: Sat, 12 Feb 2000 19:04:18 -0500 From: "Christopher Graff" <[EMAIL PROTECTED]> Subject: [uuc] Re: Physics Actually Rob's physics is half right, in a way. He just forgot about the inelastic vs. elastic collision and other factors. Consider this. You have a moving object (like a wall for argument's sake) going at -60 mph (in other words going to the left on a level plane). Another object (the car) is moving right at +60 mph. What does the car see? It sees a wall coming at it at 120 mph! That is the change in velocity, or delta V. This is what Rob is thinking. If however, in the instance with two cars, if it's a perfect inelastic collision in which both cars come to rest, each from 60 mph. Then the change for EACH car is 60 mph, true. You have to have reference points. Here's where mass counts the most, also. Little BMW hitting big Mack truck = no fun, because you're doing most of the deceleration as opposed to the truck. Hence initially, you're doing +60, and he's doing -60, after the collision both vehicles (perfect inelastic) are now doing -50 mph for example. The trucker slowed down 10 mph in a short time, whereas you slowed down 110 mph in that same instance. More lessons F=(mass)(acceleration) a= (meters)/(seconds^2) Increase distance and it lessens a, hence lessens F. When you hit a wall at 60 mph, your car deforms let's say 3 feet. So you roughly decelerate in an instant at 20g's. (It's a shortcut, delta mph/feet = g force, a VERY short short cut...) If however your car slows down in 1 ft, you have 3 times the force exerted on you (not good). Energy= 0.5mv^2. More speed = more energy, no matter how you look at it. That's why you want to dissapate as much speed off as you can if you're ever in a crash situation. Energy @ 50 m/s in a 1500kg car is 1875000 J, versus at 25 m/s it's only 468750 J. A BIG difference (by a factor of 4!!!) There's only so much energy a car can absorb before it goes to you. Also, Momentum is always conserved in collisions. p=mv. And Kinetic Energy is conserved in (I think, I'm not that sure - it IS 1 AM here!) in inelastic collisions. Figure it out! Either way, hitting objects at high speed is no good. But if you're able to slow down the rate of acceleration (i.e hit bushes, not a TREE!), then you have a better chance at saving yourself. :)Regards - -Chris Graff 615 Oak Hill Rd. Middletown, New Jersey 07748 M535i Registry (E12/E28 M535i & US 535iS) - - M535i Special Interest Group, Head Coordinator - - http://M535i.web.com BMW CCA 159803 - NJ Chapter, Senior Six Registry #184 ------------------------------ Date: Sat, 12 Feb 2000 18:48:48 -0600 From: David Yando <[EMAIL PROTECTED]> Subject: [uuc] Porridgehead Rules > Date: Fri, 11 Feb 2000 23:11:38 -0500 > From: Jonathan Porath <[EMAIL PROTECTED]> > Subject: [uuc] Bags of fun. <Big time WOB><Porridgehead> > > Seeing as the airbag discussion has warmed to a level sufficient to heat a > two stall garage, I think it's time to sit back, take a moment, and review > the discussion thus far. > > Voice #1: I don't like the steering wheel on my car and I was wondering... > OK, who left the Scotch cabinet unlocked??! Great post, as usual. Have been meaning to thank you for our Christmas present, namely the advice to roll down the windows, snuff out the radio, and let the S14 sing thru every tunnel. I think my wife believes me to be pleasantly certifiable. Keep up the great "work"! Dave Yando '74 2002 '90 ///M3 ------------------------------ Date: Sat, 12 Feb 2000 19:46:04 -0500 From: Mark Borchik <[EMAIL PROTECTED]> Subject: Re: [uuc] Stupid!! - Really? > Gary wrote: > >In frontal impacts above 30 mph, a single diagonal seat belt will damage > >your ribs and internal organs. Also your head will hit the wheel and your > >neck will get severely strained. > > Mark Selleck wrote: > Absolute statements are ripe for rebuttal. My wife, 5'2", 130#, 53 years > old, had a relatively "serious" collision last year: driving to > work(school teacher), country road, 55mph, 70 year-old man pulled out in > front of her from a side road. Estimated speed of her '84 533i at impact > was 45mph. She t-boned the other car at the B pillar, totaled both cars. > She sustained two cracked ribs, and a cut knee where it impacted the > underside of the dash. No other injuries. No internal, no neck, no > headaches, etc. No airbags. We felt very fortunate, and I went out and > bought another E28. > Picture this: Non-airbag E30 M3... With passenger... Turn 1 at Mid-Ohio (very high speed)... Driver error (mine)... Car impacts WALL head-on, and slightly skewed to the right at 70-80 mph.... Stupidly relying on factory belts (duhhh...)... Driver and passenger walk away... Both with badly-bruised sternums from seat belts (I cannot tell you how much this HURTS!)... Additionally, driver (me) has cracked hip (non-weight bearing), also from seat belt, on latch side. Moral of the story: Don't do dumb things! <g> Don't rely on factory belts, even during non-competitive club driving events... Even though the 10-year old BMW (as opposed to lesser designs) factory belts did their job, admirably, a competition harness would have effectively dispersed this impact over many points instead of just one, or two. The BMW automobile is a marvel of engineering... It did what it was supposed to do in an impact... Absorbing most of the g-forces through its structure, which SERIOUSLY deformed the entire car. <sniff> Lastly, when impacting ANYTHING at 70-80 mph... I discovered that it happens QUICK! BOOM! DONE! BTW, I DETEST airbag-equipped cars! Mark Borchik ------------------------------ Date: Sun, 13 Feb 2000 11:03:26 +1000 From: "Ian & Kim Solomon" <[EMAIL PROTECTED]> Subject: [uuc] E30 woes, Tailshaft FS Hi guys, Sorry fo the crosspost, but I wanted to get this too a wide audience. I have a E30 323i Auto tailshaft for sale. Please read this to find out why. Please respond to [EMAIL PROTECTED], NOT the address shown above. Recently I posted about my E30 323i cabrio blowing a head gasket at 220000 kms. Well, the damage went as follows (all prices is Australian dollars: 1 broken head stud: Replace the lot $60 3 spots of corrosion in head: repair, pressure test, tunnel bore, reseat valves etc etc $480 Gasket kit $150 Labour, oil, filter, plugs etc $890 Total $1500. Now when I picked up the car, it repeated a problem from 4 months back when the slushbox died with a blown front clutch pack. At that time I replaced it with a 2nd hand unit. (bad move huh). The prices quoted varied from $1500~$2600 for a reco auto, or for $2050 I can replace it with a 5 speed. Understandably I have taken the 5 spd option and will get the car back next Wednesday. Prior to this all happening, I had ordered (and prepaid for) a brand new tailshaft from Germany, which has now arrived, and I have to take it due to the dealer not being able to restock special orders. This shaft is to suit a 323i (1983 - 1990) 4 spd auto, is brand new, and comes complete with the center bearing and rubber flange coupling. Now this cost me $800, and I can't use it, so I need to sell it...fast. I am willing to let it go for AUD$600 (USD$380) and will come to some equal arrangement for shipping. This shaft will get rid of those annoying shakes which show up when a universal joint starts failing, and will obviosly last the life of your E30. Any takers: Please respond to [EMAIL PROTECTED] Ian Solomon #257 BMW Club Queensland www.bmwclubqld.asn.au '85 323i Baur Cabrio [IRS 58] www.powerup.com.au/~irs/Default.htm ------------------------------ Date: Sat, 12 Feb 2000 20:19:47 -0500 From: "Rob Levinson - UUC Motorwerks" <[EMAIL PROTECTED]> Subject: Re: [uuc] Re: Physics Thank you, Chris! I knew there was some missing component and I wasn't *entirely* brain-farting. - - Rob - ----- Original Message ----- From: Christopher Graff <[EMAIL PROTECTED]> Subject: [uuc] Re: Physics > Actually Rob's physics is half right, in a way. He just forgot about the > inelastic vs. elastic collision and other factors. > Consider this. You have a moving object (like a wall for argument's sake) > going at -60 mph (in other words > going to the left on a level plane). Another object (the car) is moving > right at +60 mph. What does the car see? It sees a wall coming at it at 120 > mph! That is the change in velocity, or delta V. This is what Rob is > thinking. ------------------------------ Date: Sat, 12 Feb 2000 17:31:15 -0800 From: "Josh Murray" <[EMAIL PROTECTED]> Subject: [uuc] More tire questions Previously I inquired about Pirelli 7000ss'. Now I ask myself and all of you... How noticable is the difference between all seasons such as the super sports and regular tires like the normal P7000? Is the Pzero noticeably worth the cash? I currently have Dunlop SP9000s, would I really notice a step "down" to a P7000 or a SP8000? I'm running 205/50-16 on my '90 325is. It's lowered with Eibach's and Bilsteins. I live in Santa Barbara, California where it rains about two months out of the year. Does this type of weather even demand all seasons or should I be getting summers "fer sure dude"? Please, enlighten me. I feel as if I may be obsessing and blowing this tire thing way out of proportion. Guide me to the light. Josh Murray ------------------------------ Date: Sat, 12 Feb 2000 20:45:25 -0500 From: "Rob Levinson - UUC Motorwerks" <[EMAIL PROTECTED]> Subject: Re: [uuc] More tire questions I am not impressed with the PZero at all. They are louder and don't seem to handle any better than performance tires costing half as much. For your location and use, I might suggest something like the SP8000 or Yoko AVS Intermediate. - - Rob - ----- Original Message ----- From: Josh Murray <[EMAIL PROTECTED]> Subject: [uuc] More tire questions > Previously I inquired about Pirelli 7000ss'. > Now I ask myself and all of you... > How noticable is the difference between all seasons such as the super sports > and regular tires like the normal P7000? Is the Pzero noticeably worth the > cash? I currently have Dunlop SP9000s, would I really notice a step "down" > to a P7000 or a SP8000? > I'm running 205/50-16 on my '90 325is. It's lowered with Eibach's and > Bilsteins. I live in Santa Barbara, California where it rains about two > months out of the year. Does this type of weather even demand all seasons > or should I be getting summers "fer sure dude"? ------------------------------ Date: Sat, 12 Feb 2000 20:52:18 -0500 From: "James Sheridan-Peters" <[EMAIL PROTECTED]> Subject: Re: [uuc] wrecks and force (was: Re: Stupid!! - Really?) > You are correct. Its the change in velocity that counts. Hitting a brick > wall at 60 means your change in velocity (known as delta V) is 60 mph. Two > cars approaching, each going 60 will stop dead so each has a delta V of 60. The thing Rob was right about in his scenario (and maybe what the quiz question was really asking) is that 60 -> 0 against a brick wall has 1/2 the energy of a collision of two 60 -> 0 cars hitting each other. Each car still has the same impact, same energy of collision, but the "system" as a whole has twice as much. Not that that matters to the occupants of each car, mind you, but physicists care :) - -- James Sheridan-Peters [EMAIL PROTECTED] National Capital Chapter '98 323is '85 RX-7 GSL #00 ------------------------------ Date: Sat, 12 Feb 2000 18:01:16 -0800 (PST) From: Gleb Arshinov <[EMAIL PROTECTED]> Subject: [uuc] People can't drive So, I am going to see my mechanic in San Francisco. Driving in the left lane of 101N. It is raining lightly. About a mile before 80 splits from 101 there is a always a traffic congestion[1] Today is no exception. So, I see stopped cars ahead, slow down and stop about 2-3 car lengths behind a car in front of me. Very moderate braking required -- a bit more than I consider optimal, but nothing that would, say, alert a passenger. I suppose, had I been paying more attention, I could have made it even more mild. Anyway, I look at the cars ahead, and a few of them seem to be performing some emergency maneuvers, changing lanes wildly. I think, "Isn't that peculiar, why would they do that?" Then I look in my rear-view mirror and all is not well there. The car that was following me in lane 1 is somehow now in between lane 1 and 2, slowly sliding sideways to lane 2. There are couple of more cars almost caught up with it in lane 1 and 2, and there are yet more cars immediately behind those. I am starting to think "Damn ...". In another fraction of a second some of these cars start attempting to occupy the same space at the same time. I am continuing to think "... I have a whole slew of driving schools coming up ...". I start hearing noises one usually does not associate with cars, as more of these cars bounce into each other. Then a big tow-truck shows up and slowly plows into the whole mess. The relative speed of all these collisions is fairly slow, so I am not feeling all that excited. At this point I realize that it might not be a bad idea to more forward a car length or so, which I proceed to do. At the same time this big mess of about 7-10 cars finally comes to a stop RIGHT BEHIND ME. Not the most pleasant feeling. I got lucky, so I am very thankful. Lesson re-enforced: allow for other people's incompetence when driving, e.g. the following distance YOU maintain should be sufficient both for you AND for the cell-phone talking, uninsured "driver" who is tailgating you. Lesson re-enforced: you've got to stay alert while driving. I was playing with the radio at the time. Had I not been doing so, I would have had a better chance of noticing the stopped cars earlier. Gleb Footnotes: [1] Which is a whole separate topic -- I have not seen a more car-hostile city than San Francisco proper. It seems the roads are designed to minimize the throughput of cars and maximize carnage ------------------------------ Date: Sat, 12 Feb 2000 20:28:47 -0600 From: George Huling <[EMAIL PROTECTED]> Subject: [uuc] Ultimate Short Shifter Just installed the UUC EVO ERK USS kit and it's great. The car should have been made this way. I'm really good reading multimeters, but not removing clips so ended up going shorter route by not removing the carrier. Purchased the Delrin Bushing kit and a new carrier P/N 25 11 1 221 864 modified by removing the lip around bottom off so it works only with the ERK. These above items for sale for $25 for use on BMW 98 M3/4 see their homepage to see what other models this also fits. George, McKinney TX 98 M3/4 81 320i ------------------------------ End of [uucdigest] V3 #251 ************************** _________________________________________ | Please visit these UUC-approved BMW parts vendors/service providers: | (listed alphabetically) | Bonneville Motorwerks . http://www.bonnevillemotorwerks.com | Circle Tire Co. (used & classic BMW parts) e-mail [EMAIL PROTECTED] | Curry's Auto Service . http://www.currysauto.com | Eurosport . http://www.eurosport-hp.com | Koala MotorSport . http://www.koalamotorsport.com | Taylor BMW - http://www.taylorbmw.com - Doc Bimmer! | The Ultimate Garage . http://www.ultimategarage.com | UUC Motorwerks . http://www.uucmotorwerks.com | Zionsville Autosport . http://www.zionsvilleautosport.com ����������������������������������������
