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TurnerX19
TurnerX19 UltraDork
10/25/21 10:27 a.m.

In reply to preach (fs) :

Transaxle flat tows just fine, lots of oil circulation from the ring gear.

nocones
nocones UberDork
10/25/21 10:52 a.m.

The LMP360 despite being on older worse compound tires Autox launches harder then the MG.  They are similar weight (LMP is ~150lbs lighter but has less power) with similar size tires, and nearly the same effective suspension stiffness.  It is even hampered by a significantly lower CG but is still noticably better off the line.  

Turns out Free take off Heat cycled out used Hoosier R7s aren't just Bad drag tires they are borderline dangerous.  

I would of been better off running the transportation snow tires probably.  

At 170 HP/1400lbs I'm not anticipating I will have issues with transaxle/driveshaft durability.  I trapped at 95 MPH on 2 of my Drag passes so the car has the power I just need to get it to hook up.  My fastest pass was a 15.9 with a 3.7 second 60'

The planned Lotus will have a better time at the drags due to higher CG.  Mine is seriously stupid low (like 12-13").  Next year it's getting a trophy truck mode on its suspension and possibly a top of roll cage battery mount.   I basically built a car that is designed to fail at drag racing.  

¯\_(ツ)_/¯
¯\_(ツ)_/¯ PowerDork
10/25/21 2:02 p.m.

So I was looking up things about the Metro 6R4, which is notably mid engined and AWD... and they did a clever thing with turning the whole deal backwards so the transfer case sends power to a rear diff just behind (and slightly inside, but ignore that part) the engine.  It looks a LOT like what would happen if you turned one of the many modern performance SUV drivetrains around... and now you people know that too.  Good luck not thinking about it.

No description available.

nocones
nocones UberDork
10/25/21 2:09 p.m.

In reply to ¯\_(ツ)_/¯ :

This is new information for you?   This knowledge has been haunting me like Annabelle for 3 YEARS

Ian F (Forum Supporter)
Ian F (Forum Supporter) MegaDork
10/25/21 2:13 p.m.

In reply to gumby :

Yep...  The S4 V8 comes to mind... an entire 4.2L V8 hanging out in front of the front axle.  VAG engineers did their best to push the output shafts as far forward in the transmission as possible, but that doesn't change where the engine is. 

¯\_(ツ)_/¯
¯\_(ツ)_/¯ PowerDork
10/25/21 2:13 p.m.

In reply to nocones :

And then you just turn the front diff upside down to reverse the output again, right?

Ian F (Forum Supporter)
Ian F (Forum Supporter) MegaDork
10/25/21 2:16 p.m.

In reply to ¯\_(ツ)_/¯ :

I still have a husk of a Jetta wagon in my back yard... lots of room back there to stuff a mid-engine "something".  And Patrick and his buddy already stripped out half of the interior. wink

¯\_(ツ)_/¯
¯\_(ツ)_/¯ PowerDork
10/25/21 2:33 p.m.

You know what, also, what about multiple engines but ONE is in the middle?

¯\_(ツ)_/¯
¯\_(ツ)_/¯ PowerDork
10/25/21 2:33 p.m.

In reply to Ian F (Forum Supporter) :

Sounds heavy, but... noted.

AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) MegaDork
10/25/21 2:43 p.m.

Total amount of weight transfer depends only on CG height, wheelbase (accel / decel) or track width (lateral), and the amount of force applied.

the rate at which that weight transfers is dependent on the tuning of the dampers.

the motion of the body is dependent on the kinematics of the suspension.

nocones
nocones UberDork
10/25/21 2:59 p.m.

In reply to ¯\_(ツ)_/¯ :

Yes..  You have to run the rear diff upside down also.  It gets a little interesting when you start to really look at it because the diff flops to the other side of  the engine when you flip it over so there is some potential need to multi-vehicle source parts to get a opposite side diff (Like Nissan uses Left side, Chevy uses Right so you could use the Nissan diff upside down in a Chevy rotated engine application if you wanted).   You also would wind up with a Centered front Diff (Old rear output) which again may be tricky multi manufacture sourcing because you need something centered but also that allows for steering.  So there is probably a lot of time in parts catalogs looking at half shafts and axle housings to ensure you wind up with Uprights, Diffs, Half shafts, and Driveshafts that play well together and have the same FD ratios.  

I think it has potential to consume lots of your challenge $$ to get it to work but maybe not.  I hoped it could be done single sourced but it looks like that would be unlikely.  That said I have a S10 based drivetrain in my driveway (installed in my 54 Willy's truck) that I need to stare at to see if the front diff holds secrets to be unlocked.

¯\_(ツ)_/¯
¯\_(ツ)_/¯ PowerDork
10/26/21 8:09 a.m.
Ian F (Forum Supporter) said:

In reply to ¯\_(ツ)_/¯ :

I still have a husk of a Jetta wagon in my back yard... lots of room back there to stuff a mid-engine "something"

So hypothetically this DOES have bolt on inner CVs up front, meaning the existing front axles could be adapted to a diff on the new backwards mid engine awd setup.  I'm still totally not thinking about it though.

Stampie
Stampie MegaDork
3/16/22 2:31 p.m.

When every part of your engine is behind the front axle it's mid engine. Just saying. 

Byrneon27
Byrneon27 Reader
3/16/22 4:23 p.m.

^ what in teh fudge am I looking at also can I buy it? 

Stampie
Stampie MegaDork
3/16/22 4:39 p.m.
Byrneon27
Byrneon27 Reader
3/16/22 4:49 p.m.

My heart... If it's ever up for grabs

Floating Doc (Forum Supporter)
Floating Doc (Forum Supporter) PowerDork
3/18/22 9:41 p.m.
Stampie said:

When every part of your engine is behind the front axle it's mid engine. Just saying. 

Absolutely. I'd tried to make that point earlier. 

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