Peugeot 205 Mi32

SoliD said:
mental, will be interesting to see the finished product and see what the handling etc is like. gonna be a relatively weighty beast with 2 mi16s no?
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I reckon it would come in at around a tonne.

Still a good 300Kg less than an Impreza...but with similar power. Then if he mods the engines, more :)

Twin engines = good.

*n
 
The_Dark_Side said:
what are the engines like to balance, ie to run in sync?

if the rear was running one or two hundred rpm faster than the front then it'd make for some interesting cornering technique.
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If you're running the same engine at each end, it's not that difficult. The extra load of the other engine being a few hundred rpm slower would lower the rpm of the 'faster' engine for the same throttle angle :)

Any 3d-5d programmable ECU would be able to rev-match the engines anyway :)

*n
 
Dogbreath said:
Don't see why it would be, if the outputs are directly coupled than the RPM's will always be matched, simple as that. If the throttles were badly unsynchronised you could get to a stage when one engine is turning the other faster than it natualy wants to turn, sapping a lot of power, but relatively minor mismatches aren't going to cause that kind of problem. At a given RPM the throttle simply controls torque output of the engine, which get combined at the common driveshaft.
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Sorry - should have been a bit more specific:

If the engines are out-of-synch, vibrations in the driveline will mount up and cause component failure. Not rev-matching as such, morerev-synchronising. :)

The Autograss Specials boys found that out to their cost...But seeing as most of them build their own rigs, they just fix them as and when :)

*n
 
The_Dark_Side said:
you've gone all techno on me Pensk.(oowa oowa)

were you agreeing or disagreeing with me lol
the twin engined car should be capable of a higher top speed than the single engined version....although by how much i couldn't say.
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Top speed is dictated by the gearing.

The gearing variables are (from the road back):

Tyre size
Final drive
Gear ratio

So in top gear, every rotation of the crank will turn the wheels a certain amount. 4th gear on most cars from the factory is 1:1 (one rotation of the crank = one rotation of the wheels) and 5th gear operates as an overdrive (one rotation of the crank = slightly more than one rotation of the wheels.

Ultimately, the final variable is the rev limit of the car.

If a stock Mi16-powered 205 tops out at 120mph on the limiter in 5th then a twin-engined 205 Mi32 (with the same 'box, final drive and tyre size) will also top out at 120mph on the limiter in 5th...It'll just get there quicker. :)

*n
 
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