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Kenodog
Joined: 25 Jun 2003
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Location: Vancouver,B.C.
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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 Posted: Thu Dec 15, 2016 3:27 am Post subject: |
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Epic cheese.
https://youtu.be/M-zc1wTJo04
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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Mike9311
Joined: 14 Dec 2004
Posts: 1798
Location: Chicago-ish
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| Posted: Thu Dec 15, 2016 3:32 am Post subject: Re: Say....Whiskey Tango Foxtrot ? |
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Real, yes....good idea, no
limited, limited, slip dif and for how long
No clutch pack and just pure friction on the side axle gears?
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Thu Dec 15, 2016 3:46 am Post subject: Re: Say....Whiskey Tango Foxtrot ? |
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| Mike9311 wrote: | | No clutch pack and just pure friction on the side axle gears? |
Works best when running epoxy instead of gear oil.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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Kenodog
Joined: 25 Jun 2003
Posts: 2669
Location: Vancouver,B.C.
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| Posted: Thu Dec 15, 2016 4:13 am Post subject: |
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If it's sketchy and will possibly lead to catastrophic failure of the diff i'm IN ! Eyes and ears everyone, the range is hot.. 
There's one born every minute.
Me
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1979 Euro 931, Olive
1981 931, Sabine
1991 Ford Ranger XLT 4x4, Ricky
1996 Ford E-350 ex-FedEx Van
2014 Mazda CX-5 (Kinderwagon)
2019 KTM 790 Adventure
2024 KLX300
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morghen
Joined: 21 Jan 2005
Posts: 9095
Location: Romania
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| Posted: Thu Dec 15, 2016 4:32 am Post subject: |
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Pushes on the outer seats of the axle gears, not so sure thats ok when it actually slips and it will slip as the engaging surfaces are pretty small.
It will make the off wheel gear brake on its usual riding surface which may lead to failure because that should be a bearing suraface and treated as one but i doubt it is in an open diff tranny.
What i dont like is that its not being held in place by anything else but that pin/bolt and the two parts of the thing actually have some degrees of freedom to move.
Also...if you push it to the point that it slips and you do it for a longer period of time, you may heat up the sliding surfaces enough that it may weld.
And if you get it to weld then you're in for a treat  as when spun that gear wants to rotate the now welded half of the lsd thing and it may crunch with the other gears and kaboom.
Ok...maybe it wont do that unless you abuse the crap out of it...or maybe it wont do it even if you abuse it....but one thing is clear...the breaking surfaces are not sufficient and mild steel on hardened steel are probably not the best clutch materials.
This should be ok for mud and gravel though...as tarmac is probably too much for those springs and that amount of steel on steel surface to handle.
But then its the question of what happens if one of the springs breaks...and maybe bits of it are not retained in their normal position 
Bottom line is that this thing is an oil heater and a bearing surfaces killer...and maybe on the last position one could say its a 1% limited slip device.
Could be calculated based on how many springs are inside, what they push and the breaking surfaces offered by our diffs.
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Fasteddie313
Joined: 29 Sep 2013
Posts: 2595
Location: MI
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| Posted: Thu Dec 15, 2016 7:47 am Post subject: |
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"the way I do it is the most unorthodox way possible"
I bet that MO is a challenge to execute..
So crazy it just might work..
For a while, until the friction debris lunches the rest of the tranny..
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Fasteddie313
Joined: 29 Sep 2013
Posts: 2595
Location: MI
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| Posted: Thu Dec 15, 2016 7:49 am Post subject: |
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| Kenodog wrote: | If it's sketchy and will possibly lead to catastrophic failure of the diff i'm IN ! Eyes and ears everyone, the range is hot..
There's one born every minute.
Me |
Don't think.. Just do it!!!!
Rootin for ya!!
| morghen wrote: |
Could be calculated based on how many springs are inside, what they push and the breaking surfaces offered by our diffs. |
If your a rocket scientist..
If kenodog is really going to do it maybe we can talk him into putting a torque wrench to it and obtain some real world data..
It may have strange breakaway vs slipping friction characteristics where it would take 100ft/lbs to break loose and then only 30 or so to keep slipping.. And change as it wears in..
Big old magnet may prolong life if you can position it to accumulate the sacrificial ferric debris..
Maybe prefit it with valve grinding compound or some other lapping agent technique?
Maybe add brass washers for a replaceable wear material?
Crazy..
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Mike9311
Joined: 14 Dec 2004
Posts: 1798
Location: Chicago-ish
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| Posted: Thu Dec 15, 2016 8:11 am Post subject: |
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epoxy...you are killing me Rasta
morghen.. We have the same thoughts
I actually found these things are sold with a warranty elsewhere? Sorry but I am not even dreaming of testing this out
Edit: Fasteddie313...you said it in summary.. "crazy"
_________________
1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car |
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Fasteddie313
Joined: 29 Sep 2013
Posts: 2595
Location: MI
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| Posted: Thu Dec 15, 2016 8:13 am Post subject: |
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| Mike9311 wrote: |
I actually found these things are sold with a warranty elsewhere? Sorry but I am not even dreaming of testing this out |
[img]http://imgur.com/UWvHGI8[/img]
I was just thinking the same..
If it covers collateral damage, no brainer..
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joecitizennn
Joined: 12 Sep 2005
Posts: 2096
Location: no mans land
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| Posted: Thu Dec 15, 2016 10:34 am Post subject: |
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LMAO
Thats about as smart as running 2" brake rotors with a pad on just one side. Or maybe steering your car with a 4" steering wheel. Even if you had good friction material, the lack of leverage makes the idea pathetic.
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87 924s
88 924SE gone
447 hp cgt clone
87 924S gone
84 944 sold
83 944 sold
89 turbo S LSD, ABS etc
86 951 white rocket
85 944 sport everything.
84 944 sold.
87 944 sold |
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morghen
Joined: 21 Jan 2005
Posts: 9095
Location: Romania
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| Posted: Thu Dec 15, 2016 5:46 pm Post subject: |
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Well you cant get leverage in that tight space...but what you could get is more friction surface...say..like a real LSD
Eddie is right it may take 100ft/lbs to break it loose and then 30 to keep sliding until red hot and welded after cooled down
It bites hard into the head of the logic and education strangers I guess.
However, like I said, it may work to a small degree for grass, snow and even gravel.
But I'm worried that that thing is fairly loose there.
When one gear tries to slip it wants to rotate one of the plaques and that is kept from rotating by colliding with the satellite gear bolt.
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joecitizennn
Joined: 12 Sep 2005
Posts: 2096
Location: no mans land
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| Posted: Fri Dec 16, 2016 4:02 am Post subject: |
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| morghen wrote: | Well you cant get leverage in that tight space...but what you could get is more friction surface...say..like a real LSD
. |
Sure you can. Just put a 3 or 4 inch disc in there instead of pinching a 29mm shaft. That guy in china is smoking his eggrolls and calling it Louixs. Maybe if him english better me be bigger convinced.
_________________
87 924s
88 924SE gone
447 hp cgt clone
87 924S gone
84 944 sold
83 944 sold
89 turbo S LSD, ABS etc
86 951 white rocket
85 944 sport everything.
84 944 sold.
87 944 sold
Last edited by joecitizennn on Sat Dec 17, 2016 5:04 am; edited 1 time in total |
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Kenodog
Joined: 25 Jun 2003
Posts: 2669
Location: Vancouver,B.C.
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| Posted: Fri Dec 16, 2016 4:37 am Post subject: |
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| Fasteddie313 wrote: | | If kenodog is really going to do it maybe we can talk him into putting a torque wrench to it and obtain some real world data.. |
I was being entirely sarcastic with the entire post. If you think I would ever waste my time or money with this ghetto S**T then you would be sadly mistaken, lol.
Me
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1979 Euro 931, Olive
1981 931, Sabine
1991 Ford Ranger XLT 4x4, Ricky
1996 Ford E-350 ex-FedEx Van
2014 Mazda CX-5 (Kinderwagon)
2019 KTM 790 Adventure
2024 KLX300
2024 KLX140 |
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morghen
Joined: 21 Jan 2005
Posts: 9095
Location: Romania
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| Posted: Fri Dec 16, 2016 6:43 am Post subject: |
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Kenodog, did you get my email back?
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