Urba Centurion Update - (Kubota diesel, 100+ MPG in mixed driving - Fall 2012 on)

[some_other_dave]

Originally Posted by changzuki

Is it possible to curb the anxiety?

It is, but then you'll have to fix up the lower-front of the anxiety where it rode up and over the curb...

-soD

[changzuki]

The 2016 Green Grand Prix is about 2.5 months away...
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Centurion waits patiently next to the "Changzuki"....
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~CrazyJerry

[changzuki]

The 2016 Green Grand Prix is approaching at the speed of cold molasses.
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~CrazyJerry

[GreenHornet]

Any new tweaks?

[changzuki]

Originally Posted by GreenHornet

Any new tweaks?

Hi GreenHornet,
I'm just finishing up cleaning the overdrive shift solenoid. Last year at the Green Grand Prix, the overdrive failed at about 35 miles or so into the event. A month later the transmission was removed, repaired, reinstalled and has been flawless ever since. Never missed a beat at the Grand Prix Festival the following September. I've made just two maiden voyages this year and I can't leave anything to chance if last year's numbers are going to fall.
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It's late and it's only about 19 degrees out there. The rocks are tough on the knees and this stupid led head-light has made a dent in my forehead, but the solenoid is back in and clicking freely. Will give it a run tomorrow see if it hits all 8 up and down!
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~CrazyJerry

[nemo]

Will give it a run tomorrow see if it hits all 8 up and down!
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~CrazyJerry

Thought it was 6, OD in 3rd and 4th. Did you modify it?

[changzuki]

Originally Posted by nemo

Thought it was 6, OD in 3rd and 4th. Did you modify it?

Yes! No more excuses for not having "the right gear". Highly suggested if anyone builds one of these.
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~CrazyJerry

[GreenHornet]

Originally Posted by nemo

Thought it was 6, OD in 3rd and 4th. Did you modify it?

These overdrive units can work in all gears. All the overdrive is in a nutshell is another gear added to the back of the gearbox which will run in any gear as long as it is engaged. Most people think that they can only run in 3rd and 4th because the way Triumph designed the electrics. Triumph designed it in this way to prevent the operator from accidently shifting into reverse while the overdrive is activated which results in very bad things

How it works is Triumph used a small spring interrupter loaded switch in the electrical circuit between the overdrive lever/switch inside the car and the solenoid on the overdrive unit itself that moves the clutch in the overdrive which engages the overdrive. The lever attached to the shifter linkage holds the interrupter switch or small spring closed so current can flow when the transmission lever is moved to the 3rd or 4th gear position.

Now if you wanted to be able to engage the Overdrive in all gears you simply remove the small spring interrupter switch or use a bypass switch and voila now you have 8 gears

[changzuki]

Only 12 days left until the 2016 Green Grand Prix!!
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That's not much time, but the little Centurion will be ready!
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Ready enough to break last year's 250.64 mpg?
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Fasten your seat belts cause we're gonna take a real crack at it!
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~CrazyJerry

[elhigh]

250MPG

Lawd, lawd. Makes you wonder exactly what VW is charging all that money FOR on their super high tech two-seater 1L car. If a cheerfully loony shadetree wrench in upstate NY can screw together a 40-year-old fiberglass bathtub on an even older English chassis powered by a no-tech garden tractor engine and do JUST AS WELL, exactly what is all that extra money FOR?

Is it to pay off the Dieselgate lawyers??