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Learning how to build Lotus Seven replicas...together!
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PostPosted: May 7, 2017, 3:00 pm 
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Joined: September 22, 2005, 10:29 am
Posts: 402
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Pros? Cons?


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PostPosted: May 8, 2017, 8:23 am 
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Joined: February 8, 2014, 10:47 pm
Posts: 469
Location: Cornholio OR "Where the magic happens"
Pro - you get reverse without hassles.

Con - you keep the weak link (the motorcycle clutch)

Con - you have to split the cases on the cycle motor to gut the trans.

Pro - you will likely never break the Audi trans

Con - the cycle motor will need a modified oiling system to survive lateral G's

Con - you will have to deal with cycle electrics (EFI?)

Con - (Pro?) you will have to develop header building skills

Pro - you will not need a big radiator

Con - you will need an oil cooler

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PostPosted: May 8, 2017, 12:51 pm 
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Joined: November 11, 2013, 4:47 am
Posts: 732
Location: No. Nevada
Con - Guibo!

They fail.
Sometimes spectacularly, doing a LOT of damage.
Original quality parts are hard to find and expensive.

CV joint would be much better.

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PostPosted: June 9, 2017, 9:50 am 
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Joined: March 30, 2011, 7:18 am
Posts: 1280
Location: central Arkansas
The main problem I see is that you wind up with a fairly long distance between the front of the motor and the axle centerline. But bike engines are shorter and less bulky on top than car engines, which would let you tuck it into the firewall a bit more.

On the other hand, it's probably still shorter than a chain drive diff behind the engine, not to mention the forward lean of most modern sportbike engines is the opposite direction from the firewall.

The Audi diff is both bulky and heavy, but it'd be bulletproof, and there's a decent assortment of gears and final drives available for it. There have been lighter and smaller transaxles, but most of them are old, oddball, designed for engines with much less power, and not much in the way of gear ratio options.


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