Lake Perkolilli

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Lake Perkolilli

Postby Bozo » Mon Oct 09, 2017 1:30 pm

On the way back from my eastern states trip I dropped in to Lake Perkollili.

Perkolilli is an historic car and motorcycle race site based on the dried surface of the lake that has a fine compact structure.

The road in is quite sandy and easily cut up by 4WDs.
Image

It had dried out from the flooding at the time of the Centenary and I was able to do a cautious lap. It got a bit wet when I went to the edge of the lake to check out wrecked cars.
Image

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Re: Lake Perkolilli

Postby _Wilks » Tue Oct 10, 2017 7:44 am

Memories Bozo.

As a Kalgoorlie kid in the early seventies, I was lucky enough to be out there to watch a pre-production Kawasaki Z900 do an afternoon of speed tests. Top secret stuff. My old man (OIC local cop shop) got the heads up from the local Kawasaki dealer. Just a handful of official-type people out there watching. The old man reckoned my eyes were as big as dinner plates. I'd never seen or heard a bike like it - lightning fast and the sweetest 4-stroke 4cyl howl.

The baddest road bike I can remember at the time was a water bottle - Suzuki GT750... a water cooled two-stroke triple (I got to ride a GT750 later when I was 18. Not that fast and a pig of a thing to ride - handling wise).

Reminiscing over.
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Re: Lake Perkolilli

Postby Bozo » Tue Oct 10, 2017 9:51 am

Wilks

I presume the bike that you saw was a T103 pre release version of the Z1 that was produced in December 1971 and tested in early 1972.

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Re: Lake Perkolilli

Postby _Wilks » Tue Oct 10, 2017 10:45 am

Coulda been. We moved to Kal early 71.

Thinking about it - Perkolilli seems an odd choice for testing. OK for ET's but I'm guessing not that long for top speed testing. Just looking at Google Earth the longest possible run - allowing for acceleration & braking is not much over 1km. I suppose it not being actively used allowed for the secrecy Kawasaki were chasing.

I remember the old man taking me to Lake Lefroy (huge dry - in summer- salt lake near Kambalda) a few times to watch top speed runs & ET's organised by a local petrol head group. Properly run too. The V8 Kingswood patrol car got an official run once much to everyone's amusement. And at another organised event at Lake Lefroy an emu wandered onto the lake. The old man told a newly transferred junior PC to get the patrol car and chase it away from the 'run'. The young copper went too far, broke thru the salt crust and bogged the police car. Going so fast chasing the bloody emu, he got a long way into the soft area before bogging. Took a big crew of blokes & vehicles hours to get the car out. In the end, it took a daisy chain of bogged/semi bogged 4WD's & utes all connected by long tow ropes to tow this one police car out. Punishment for the junior copper was to wash off all the salty mud underneath the car.

Reminiscing not over.
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Re: Lake Perkolilli

Postby Bozo » Tue Oct 10, 2017 12:08 pm

I understand that they were looking for reliability at high speed.

The test was to run it flat out for a tank full of fuel.

The two mile circuit with wide bends allowed it to go flat out for a long distance. It is a similar circuit size to Talladega in Alabama where the bike was also tested (Talladega is 2.66 miles).

In America, T103 became “Project New York Steak”. Lead by Kawasaki America’s senior test rider, Bryon Farnsworth, and assisted by Kawasaki’s race team of Gary Nixon, Hurley Wilvert and Paul Smart, the new Kawasaki was subjected to repeated attempts to break it.

The secret to the Kawasaki’s success went beyond it’s four-cylinder motor – this Kwakker was a looker with all the right lines.
One item on the test program was undertaken at the Talladega speed bowl. The idea was to run the big Kwack flat out for the capacity of the gas tank: quite literally nailed hard against the stop. Test riders reported weaving but, even when running at a genuine 130-mph plus, the bike was unbreakable.


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Re: Lake Perkolilli

Postby Bozo » Tue Oct 10, 2017 12:31 pm

Your mention of ETs reminded me of an interesting comparison of 0 to 60 mph for BMW motorcycles at

https://www.zeroto60times.com/vehicle-make/bmw-motorycles-0-60-mph-times/

The watercooled GS is faster than the HP2 Enduro.

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Re: Lake Perkolilli

Postby _Wilks » Tue Oct 10, 2017 12:58 pm

Bozo wrote:I understand that they were looking for reliability at high speed.

The test was to run it flat out for a tank full of fuel.

The two mile circuit with wide bends allowed it to go flat out for a long distance. It is a similar circuit size to Talladega in Alabama where the bike was also tested (Talladega is 2.66 miles).

Bozo


Nup. Memory is crystal clear. Lake Perkolilli was all straight line testing.

Bozo wrote:Your mention of ETs reminded me of an interesting comparison of 0 to 60 mph for BMW motorcycles at

https://www.zeroto60times.com/vehicle-make/bmw-motorycles-0-60-mph-times/

The watercooled GS is faster than the HP2 Enduro.

Bozo


That was my thoughts after test riding the wet head. Although since then, I've added a Wunderlich performance controller. I reckon my Akropovic exhaust adds nearly 50bhp. The ears never lie... :lol:
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Re: Lake Perkolilli

Postby Bozo » Tue Oct 17, 2017 10:39 am

Shane

In the late 60's early 70's my brother and I used to haunt Cowie's Kawasaki at 137 Canning Highway. He was the only Kawasaki dealer in Perth then.

It was a small shop on two levels that was packed with motorcycling stuff.

There was all of this fascinating gear and motorcycles that would turn up on a regular basis.

I still have a pair of Roger De Costa motocross boots I purchased from there.

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Re: Lake Perkolilli

Postby spacey1 » Tue Oct 17, 2017 4:42 pm

Ah the reminiscing :P CB750's with the 1000cc kit, smoking baby... my favs are still the Kawasaki Triples! Hand grenades waiting to explode 8) Wheel stands in all gears on the 500 two-up. I was always the guy on the back, even when doing same on the TY 250 :P Ah the days...

And love that website Boz!

Very interesting 0-60mph times across the range of BMs. There really isn't a lot of difference.

Yeah, yeah, I know how difficult it is to make half a second difference. In the real world, a shoddy rider on an XR1000 would probably be beaten to 100kph by a good rider on a LC GS.
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