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      08-22-2010, 02:48 PM   #1
benjamin84
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Testing the Quaife LSD (Video)

Put together a short clip of me testing the Quaife diff It certainly does what it's supposed to, very happy with it so far, and I'm seriously looking forward to winter now!

http://www.youtube.com/watch?v=fLFupcWTdAs

Last edited by benjamin84; 08-23-2010 at 03:21 PM.
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      08-22-2010, 03:08 PM   #2
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Wow that was cool!
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      08-22-2010, 03:11 PM   #3
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Pretty impressive, nice drifting
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      08-22-2010, 03:18 PM   #4
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Thanks By the way, I do apologise for the cheesy music choice, but it was never really going to be a classy video considering I'm doing donuts and powerslides in an empty carpark
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      08-22-2010, 03:36 PM   #5
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Cool video, and that LSD looks to be a lot of fun. However, I can't get over the idea that the van in the back isn't the Libyan nationalists from Back to the Future...
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      08-22-2010, 06:02 PM   #6
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They do a limited slip diff for the 20d?
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      08-23-2010, 12:54 AM   #7
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sexy, good driving too
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      08-23-2010, 01:26 AM   #8
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Sooooo jealous.

I tried doing that in the rain last night and FAIL.

Hopefully something affordable comes out soon that is also reliable.

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      08-23-2010, 03:25 AM   #9
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Quote:
Originally Posted by Haagen-Dazs View Post
They do a limited slip diff for the 20d?
I think the 120d is the smallest engine they do it for Enough torque for it to be warranted though (350Nm in the 120d, 400Nm in a 135i), especially in the wet or on snow

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Originally Posted by miiipilot View Post
Sooooo jealous.

I tried doing that in the rain last night and FAIL.

Hopefully something affordable comes out soon that is also reliable.

miiipilot
The Quaife cost me £890, about $1400, and £400 ($620) to mount. Definitely worth it for me, and I plan to do the same mod to every future BMW I own Compared to the cost of a 135i I would presume it's fairly negligible? Mind you a 135i is $130.000 in Norway so it might compare differently in the US.

Last edited by benjamin84; 08-23-2010 at 03:32 AM.
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      08-23-2010, 09:08 AM   #10
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that's making me one one really really soon.... starting to source out starting today.....

nice vid, but like you said, cheesy music, but it makes it funny.
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      08-23-2010, 09:31 AM   #11
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Quote:
Originally Posted by The1 View Post
that's making me one one really really soon.... starting to source out starting today.....

nice vid, but like you said, cheesy music, but it makes it funny.
The music was meticulously chosen for exactly that purpose Too many youtube vids of people trying to be cool...

Like a record baby, round round right round
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      08-23-2010, 09:32 AM   #12
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Quote:
Originally Posted by benjamin84 View Post
I think the 120d is the smallest engine they do it for Enough torque for it to be warranted though (350Nm in the 120d, 400Nm in a 135i), especially in the wet or on snow


The Quaife cost me £890, about $1400, and £400 ($620) to mount. Definitely worth it for me, and I plan to do the same mod to every future BMW I own Compared to the cost of a 135i I would presume it's fairly negligible? Mind you a 135i is $130.000 in Norway so it might compare differently in the US.
I asked this because they don't have it on the website. I know the 20d has more than enough torque. Being european i'm very used to diesel cars, but what you should have done is a before and after video :P that way we could see the real diferance. I've been thinking of getting a 1 series, but the fact that the 20d didn't have a LSD and i thought there wasn't one on the market made me think of going to the 23d (which has something different and gives you the chance, if you wan't BMWP brakes, to have the rears in yellow).
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      08-23-2010, 10:38 AM   #13
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Quote:
Originally Posted by Haagen-Dazs View Post
I asked this because they don't have it on the website. I know the 20d has more than enough torque. Being european i'm very used to diesel cars, but what you should have done is a before and after video :P that way we could see the real diferance. I've been thinking of getting a 1 series, but the fact that the 20d didn't have a LSD and i thought there wasn't one on the market made me think of going to the 23d (which has something different and gives you the chance, if you wan't BMWP brakes, to have the rears in yellow).
I found that Birds Auto in the UK have a better feature for finding out what diffs are available than Quaife has on their site: Birds Auto

I regret not doing a before/after comparison! Could have helped explain, to those who don't know, what an LSD does But then again, most 1-series owners on this site will have experienced the dreaded "one wheel burnout" at some point That's what made me buy the Quaife!
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      08-23-2010, 10:56 AM   #14
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Quote:
Originally Posted by benjamin84 View Post
I found that Birds Auto in the UK have a better feature for finding out what diffs are available than Quaife has on their site: Birds Auto

I regret not doing a before/after comparison! Could have helped explain, to those who don't know, what an LSD does But then again, most 1-series owners on this site will have experienced the dreaded "one wheel burnout" at some point That's what made me buy the Quaife!
Interesting, they don't have one for the 123d! I know what a LSD does, but it would be nice to see how you handle with only one wheel slipping, and then with 2
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      08-23-2010, 11:29 AM   #15
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I fitted my Quaife at Birds and they did a top job (great guys) while I see massive improvement in traction it is now harder to drift on dry asphalt... Its somewhat good because you can exit corner/roundabout so much quicker but you must be violent with the accelerator to drift. In the wet however its much nicer/easier and more sort of "progressing" drift, much more pleasure
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      08-23-2010, 11:30 AM   #16
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Yup, would be good with a video showing the improvement I have tried doing similar things earlier and it's not possible at all on wet tarmac, just end up spinning one wheel. It is possible to do powerslides but you have to be very abrupt with either throttle or steering (weight transfer) to ensure both wheels let go at the same time, and once sliding you have to maintain a very large angle of drift or it will snap back in line rather abruptly. Much nicer and more controllable with the Quaife

Strange that they don't have one for the 123d actually, some times they don't list every available diff on their site though, always worth giving them a call Very service minded people!

I'm seriously looking forward to winter now though... even started looking forward to rainy days just so I can feel the diff doing it's job!
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      08-23-2010, 11:35 AM   #17
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Quote:
Originally Posted by pavelitto View Post
I fitted my Quaife at Birds and they did a top job (great guys) while I see massive improvement in traction it is now harder to drift on dry asphalt... Its somewhat good because you can exit corner/roundabout so much quicker but you must be violent with the accelerator to drift. In the wet however its much nicer/easier and more sort of "progressing" drift, much more pleasure
I agree with all of the above Shocking increase in grip in all conditions. I have to rely more on weight transfer and speed to drift in the dry now but even then I find it is easier to control once the car is sliding. Snow should be awesome though
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      08-23-2010, 12:04 PM   #18
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Quote:
Originally Posted by benjamin84 View Post
Yup, would be good with a video showing the improvement I have tried doing similar things earlier and it's not possible at all on wet tarmac, just end up spinning one wheel. It is possible to do powerslides but you have to be very abrupt with either throttle or steering (weight transfer) to ensure both wheels let go at the same time, and once sliding you have to maintain a very large angle of drift or it will snap back in line rather abruptly. Much nicer and more controllable with the Quaife

Strange that they don't have one for the 123d actually, some times they don't list every available diff on their site though, always worth giving them a call Very service minded people!

I'm seriously looking forward to winter now though... even started looking forward to rainy days just so I can feel the diff doing it's job!
does anyone know how well the OEM diff works on 123d?
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      08-23-2010, 12:18 PM   #19
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Quote:
Originally Posted by Qbone View Post
does anyone know how well the OEM diff works on 123d?
As it is basically a more advanced version of the ESP system (using the brakes to slow down a spinning wheel) I would presume it would be less predictable and slower to react than a purely mechanical solution like a torsen diff.

Check this vid of the 135i (same E-diff tech as the 123d), you can see the diff braking the inside wheel intermittantly, and the car moves around a bit as a result. That being said, you could not do a drift like that with an open diff without holding it at a much wider angle so it evidently works

Edit: This video shows that the e-diff doesn't fully replace a proper mechanical solution in extreme situations. Compare it to this video of a 120d with a Quaife.

Last edited by benjamin84; 08-23-2010 at 12:24 PM.
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      08-23-2010, 12:22 PM   #20
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Quote:
Originally Posted by benjamin84 View Post
As it is basically a more advanced version of the ESP system (using the brakes to slow down a spinning wheel) I would presume it would be less predictable and slower to react than a purely mechanical solution like a torsen diff.

Check this vid of the 135i (same E-diff tech as the 123d), you can see the diff braking the inside wheel intermittantly, and the car moves around a bit as a result. That being said, you could not do a drift like that with an open diff without holding it at a much wider angle so it evidently works
okey, i have to try it next time it rains:P looks fun!
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      08-23-2010, 02:41 PM   #21
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haha nice drifting
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      08-23-2010, 03:21 PM   #22
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Quote:
Originally Posted by benjamin84 View Post
But then again, most 1-series owners on this site will have experienced the dreaded "one wheel burnout" at some point
just got my 135i less than a month ago and haven't been able to drive it aggressively (can't call doing donuts in the parking lot aggressive driving haha).

please enlighten me on the one wheel burnout
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