[uucdigest] Thursday, June 19 2003 Volume 03 : Number 6482
_________________________________________________________________ | | Search the ARCHIVES: | http://www.mail-archive.com/[EMAIL PROTECTED] | | Visit Richard Nott's Ultimate BMW Database: | http://www.bmwdatabase.com | | 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. | Technical Problems? Send 'em to [EMAIL PROTECTED] |__________________________________________________________________ In this BMW UUC Digest: [uuc] Best laser jammer Re: [uuc] Best laser jammer Re: [uuc] Brake upgrades for E34 525 Re: [uuc] Brake upgrades for E34 525 Re: [uuc] Oil temperature questions ---------------------------------------------------------------------- Date: Thu, 19 Jun 2003 01:12:13 -0400 From: "Dennis Liu" <[EMAIL PROTECTED]> Subject: [uuc] Best laser jammer Ok, looking to finally take the plunge and try a good laser jammer. Trying to be proactive, for once. Does anyone have any good test results comparing real laser jammers? Craig just posted this on the Rennlist, and it looks pretty good: http://www.audiworld.com/news/03/lidatek/content.shtml But check out: www.1-radar-laser-jammers-detectors.com This seems pretty good as well, and for the same price, includes TWO transponders. Any and all opinions/experiences would be appreciated. If this works out, I may consider installing in all vehicles (gulp). vty, - --Dennis ------------------------------ Date: Thu, 19 Jun 2003 06:21:13 -0400 From: "Gary Derian" <[EMAIL PROTECTED]> Subject: Re: [uuc] Best laser jammer Drive with your high beams on. An IR filter in front will stop the light, but not the IR. Gary Derian > Ok, looking to finally take the plunge and try a good laser jammer. Trying > to be proactive, for once. Does anyone have any good test results comparing > real laser jammers? > > Craig just posted this on the Rennlist, and it looks pretty good: > http://www.audiworld.com/news/03/lidatek/content.shtml > > But check out: > www.1-radar-laser-jammers-detectors.com > This seems pretty good as well, and for the same price, includes TWO > transponders. > > Any and all opinions/experiences would be appreciated. > > If this works out, I may consider installing in all vehicles (gulp). > > vty, > > --Dennis > ------------------------------ Date: Thu, 19 Jun 2003 06:23:30 -0400 From: "Gary Derian" <[EMAIL PROTECTED]> Subject: Re: [uuc] Brake upgrades for E34 525 Also, peak weight transfer depends on the road surface. If the road is slick, you can't stop as fast which limits weight transfer to the front. Gary Derian > Michael, > > Do I understand what you're saying correctly? Do you want to put > smaller calipers in the front to move brake bias to the rear? > > I also think that if you really want to as you write > > " I'm really looking for a system that is truly balanced. as in the > limit of adhesion in braking is attained at all 4 wheels at the same time." > > I hope you're not forgetting that weight transfers forward as you jump > on the binders, so by making your bias move more to the rear without > addressing forward weight transfer you're going to lock the rears up > sooner and make the car pretty loopy. Or are you also putting some > really fast computer controlled bias valve that compensates for the > weight transfer. > > I'm obviously a bit puzzled as to what you're trying to do. > > BTW you can buy a cockpit adjustable brake bias valve that allows you to > play with bias to your hearts content. Just don't test it on the highway. > > Marco > > Michael McCoy wrote: > > ----- Original Message ----- > > From: "Rob Levinson * UUC Motorwerks" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Wednesday, June 18, 2003 7:26 PM > > Subject: Re: [uuc] Brake upgrades for E34 525 > > > > > > > >>The E23 calipers are not compatible with the E34. > >> > > > > > > hmm. now you tell me. :oP > > they have the same pistons as the M5/M6 so I was hoping that maybe they were > > just a cheaper version made by ATE. > > they are quite small. so that would definately have served my purpose in > > moving lots of the brake bias to the rear. > > oh well. they are on their way... less than $16 including shipping. maybe > > I'll find a place for them to sit and look pretty. > > > > > >>As posted previously, almost your entire menu of BMW factory-sourced > > > > options > > > >>is found right here: > >> > >>http://www.bmwe34.net/e34main/upgrade/brakes.htm > >> > >>(There's a rare E32 tiny 4-piston setup I left out of the list). > >> > >>How crazy do you want to go with the brakes? In about a week or two, UUC > >>will have the 355mm 4-piston front and 328mm 4-piston rear available for > > > > the > > > >>E34. They fit under 17" wheels and will be very reasonably priced for > > > > this > > > >>level of braking capability. > >> > > > > > > you done the math yet on brake balance/bias/dynamics yet? and if so, you > > care to share those numbers? > > > > I'm really looking for a system that is truly balanced. as in the limit of > > adhesion in braking is attained at all 4 wheels at the same time. also, for > > a balanced braking system, the thermal load at all 4 corners would be > > similar. as in the % utilization of the heat sink capacity is equal front to > > rear, so all the brakes would overheat at the same time. so not cooking the > > fronts and the rears only warm to hot (which is what the car does now). > > > > also, why such big rotors in the front? seems a bit excessive. 330mm was > > more than enough for most LMP cars (granted they are only 1500lbs, but they > > do more repetetive stopping from higher speeds than a 5 will ever see.) > > > > > >>Big brakes are not an option on the E34 - they are a _requirement_. I've > >>had 5-series for quite a few years now, and have experienced virtually > > > > every > > > >>setup listed on the BMWE34.net website. Frankly, all of the factory parts > >>(even the Nurburgring calipers) are insufficient, especially if you're > >>building a big-power car. > >> > > > > > > i don't know if bigger is always better. granted the E34 needs better > > brakes, but I think sizing the calipers to match the balance and maximum > > grip of the car is best. and then size the rotor to accomodate the heat > > characteristics of the system. > > > > i've been trying to work the math backwards, but keep finding things wrong > > with my approach. I want the math to be perfect before I figure out what > > calipers/rotors match the needs. the trial and error methodology would be an > > expensive way to approach this problem. > > > > -Michael McCoy > > > > > > > > > >>- Rob > >> > >> > >>----- Original Message ----- > >>From: "Michael McCoy" <[EMAIL PROTECTED]> > >>Subject: Re: [uuc] Brake upgrades for E34 525 > >> > >> > >> > >>>ok, so those are the fronts. what about the rears? > >>> > >>>I'm trying to get rid of the excessive front bias. (getting rid of heat > >>>faster too would also be a plus.) > >>> > >>>what can people tell me about the E23 7 series front brakes? they look > >> > > to > > > >>be > >> > >>>very similar to the front brakes on the M5/M6 of the early 80's. they > >> > > use > > > >>>the same rebuilt kit... but don't have the same caliper PN and such. > >>>any info on rotor size and the likes? > >>> > >>>thanks > >>> > >>>-Michael McCoy > >> > > > > > > > ------------------------------ Date: Thu, 19 Jun 2003 06:59:31 -0400 From: "Michael McCoy" <[EMAIL PROTECTED]> Subject: Re: [uuc] Brake upgrades for E34 525 the idea is indeed to move bias to the front. another aproach would be bigger calipers on the front, complemented by much bigger calipers on the rear. current brake bias is around 70% front. I'm looking for more along the lines of 65% to 63% front. I'm not looking to move the brakes ALL to the rear, but currently the rear brakes don't do much of anything ... especially when braking hard. - -Michael McCoy - ----- Original Message ----- From: "marco" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, June 19, 2003 1:15 AM Subject: Re: [uuc] Brake upgrades for E34 525 > Michael, > > Do I understand what you're saying correctly? Do you want to put > smaller calipers in the front to move brake bias to the rear? > > I also think that if you really want to as you write > > " I'm really looking for a system that is truly balanced. as in the > limit of adhesion in braking is attained at all 4 wheels at the same time." > > I hope you're not forgetting that weight transfers forward as you jump > on the binders, so by making your bias move more to the rear without > addressing forward weight transfer you're going to lock the rears up > sooner and make the car pretty loopy. Or are you also putting some > really fast computer controlled bias valve that compensates for the > weight transfer. > > I'm obviously a bit puzzled as to what you're trying to do. > > BTW you can buy a cockpit adjustable brake bias valve that allows you to > play with bias to your hearts content. Just don't test it on the highway. > > Marco > > Michael McCoy wrote: > > ----- Original Message ----- > > From: "Rob Levinson * UUC Motorwerks" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Wednesday, June 18, 2003 7:26 PM > > Subject: Re: [uuc] Brake upgrades for E34 525 > > > > > > > >>The E23 calipers are not compatible with the E34. > >> > > > > > > hmm. now you tell me. :oP > > they have the same pistons as the M5/M6 so I was hoping that maybe they were > > just a cheaper version made by ATE. > > they are quite small. so that would definately have served my purpose in > > moving lots of the brake bias to the rear. > > oh well. they are on their way... less than $16 including shipping. maybe > > I'll find a place for them to sit and look pretty. > > > > > >>As posted previously, almost your entire menu of BMW factory-sourced > > > > options > > > >>is found right here: > >> > >>http://www.bmwe34.net/e34main/upgrade/brakes.htm > >> > >>(There's a rare E32 tiny 4-piston setup I left out of the list). > >> > >>How crazy do you want to go with the brakes? In about a week or two, UUC > >>will have the 355mm 4-piston front and 328mm 4-piston rear available for > > > > the > > > >>E34. They fit under 17" wheels and will be very reasonably priced for > > > > this > > > >>level of braking capability. > >> > > > > > > you done the math yet on brake balance/bias/dynamics yet? and if so, you > > care to share those numbers? > > > > I'm really looking for a system that is truly balanced. as in the limit of > > adhesion in braking is attained at all 4 wheels at the same time. also, for > > a balanced braking system, the thermal load at all 4 corners would be > > similar. as in the % utilization of the heat sink capacity is equal front to > > rear, so all the brakes would overheat at the same time. so not cooking the > > fronts and the rears only warm to hot (which is what the car does now). > > > > also, why such big rotors in the front? seems a bit excessive. 330mm was > > more than enough for most LMP cars (granted they are only 1500lbs, but they > > do more repetetive stopping from higher speeds than a 5 will ever see.) > > > > > >>Big brakes are not an option on the E34 - they are a _requirement_. I've > >>had 5-series for quite a few years now, and have experienced virtually > > > > every > > > >>setup listed on the BMWE34.net website. Frankly, all of the factory parts > >>(even the Nurburgring calipers) are insufficient, especially if you're > >>building a big-power car. > >> > > > > > > i don't know if bigger is always better. granted the E34 needs better > > brakes, but I think sizing the calipers to match the balance and maximum > > grip of the car is best. and then size the rotor to accomodate the heat > > characteristics of the system. > > > > i've been trying to work the math backwards, but keep finding things wrong > > with my approach. I want the math to be perfect before I figure out what > > calipers/rotors match the needs. the trial and error methodology would be an > > expensive way to approach this problem. > > > > -Michael McCoy > > > > > > > > > >>- Rob > >> > >> > >>----- Original Message ----- > >>From: "Michael McCoy" <[EMAIL PROTECTED]> > >>Subject: Re: [uuc] Brake upgrades for E34 525 > >> > >> > >> > >>>ok, so those are the fronts. what about the rears? > >>> > >>>I'm trying to get rid of the excessive front bias. (getting rid of heat > >>>faster too would also be a plus.) > >>> > >>>what can people tell me about the E23 7 series front brakes? they look > >> > > to > > > >>be > >> > >>>very similar to the front brakes on the M5/M6 of the early 80's. they > >> > > use > > > >>>the same rebuilt kit... but don't have the same caliper PN and such. > >>>any info on rotor size and the likes? > >>> > >>>thanks > >>> > >>>-Michael McCoy > >> > > > > > > > ------------------------------ Date: Thu, 19 Jun 2003 09:53:15 -0400 From: Ray Bahr <[EMAIL PROTECTED]> Subject: Re: [uuc] Oil temperature questions Hi All, As I understand it - You want the oil temperature slightly over boiling in order to boil off any collected moisture. Ray Bahr ------------------------------ End of [uucdigest] V3 #6482 *************************** | | In memory of Michel Potheau - friend, enthusiast, founder of the BMW CCA. |________________________________________ | Please visit these UUC-approved BMW parts vendors/service providers: | (listed alphabetically) | | Autoscope-Motorsports - http://www.autoscope-motorsports.com | |==================================================== | | Koala MotorSport . BMW technical information, special tool sales/rental | http://www.koalamotorsport.com | |==================================================== | | Taylor BMW - http://www.taylorbmw.com - Doc Bimmer! | |==================================================== | Turner Motorsport Inc . The Ultra-High Performance BMW Specialist | 207 Elm Street, Amesbury, MA 01950 | 978-388-7769 / fax 978-388-4202 | http://www.turnermotorsport.com | |==================================================== | | UUC Motorwerks - BMW Performance Fine-tuning | and home of the Ultimate Short Shifter - accept no substitutes! | 908-874-9092 . http://www.uucmotorwerks.com |__________________________________________________________
