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Author Topic: T-2011 – what’s behind the number?  (Read 29919 times)
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Peter Jack
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« Reply #165 on: January 03, 2013, 03:22:36 PM »

What a nice bell mouth. Good work guys and gals!!!  grin grin grin

Pete
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manta22
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« Reply #166 on: January 04, 2013, 12:14:03 PM »

Very clever bell-mouth stack, Michael.

Regards, Neil  Tucson, AZ
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Regards, Neil  Tucson, AZ
Schruiber
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« Reply #167 on: March 30, 2013, 11:42:23 AM »

Next week will be our 4th time at the Shell Eco-marathon Fuel Efficiency competition in Houston Texas.  This now 4 year old car keeps changing and is providing excellent learning. With lots of overtime and great hands-on experiences for the students in our industry partner and volunteer Ed’s machine shop we upgraded the Urban Concept car’s rear engine compartment ingredients.

- We replaced the whole rear steel tube frame, engine with its CVT belt drive and:
- Moved firewall forward and took advantage of the space under the seat.
- Aluminium frame machines and fabricated from extrusions and tubing.
- Single wheel drive and aluminum axles eliminating the differential and steel axle.
- A new Yanmar L48 210cc 4.5hp diesel engine.
- A tuned velocity stack with intake air temperature sensor; exhaust is now strait up which makes it quieter
- Machined off the flywheel forced air cooling fins and replace it with a thermostat controlled electric fan to keep it hotter = less fuel
- Very light weight (and high $$) Lithium MC-battery
..... and, taa-taaaa strait coupled it with a 5-speed transmission from a 250 cc Yamaha – thus the 3rd pedal.
8 points of data including 3 way acceleration/GPS are collected with an AIM EVO4 and displayed on a MyChron3 Dash.
With losing weight and gaining a transmission we are still ~25 lbs lighter than last year at just about 408lbs.

It is now a “drivers” car – our two drivers Brooke and Hunter are already betting on who will set the higher mileage.  No prediction yet because after just a few laps for each and some debugging it went in true race fashion onto to the trailer bound for Houston!

It sure ticks over nice in 5th and has the “right speed”.  Wondering how fast it would go on the 130/150 track at WOS?

Stay tuned for the link to the documentary film Shell has made about our car program and educational outreach to Elementary and Middle school students.

Michael


* UC 3rd pedal - steering wheel - shifter.JPG (212.7 KB, 622x480 - viewed 153 times.)

* UC engine - transmission.JPG (240.31 KB, 640x480 - viewed 182 times.)
« Last Edit: March 30, 2013, 12:01:04 PM by Schruiber » Logged

T-2011 - Granite Falls HS UrbanAutos Diesel - 31.16668MPH over the measured mile  at WoS 2011.
Freud
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« Reply #168 on: March 30, 2013, 12:36:52 PM »

I am certain that the crew of Target550 would approve the changes in the drive train.........

FREUD
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Schruiber
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« Reply #169 on: April 01, 2013, 09:57:22 AM »

Target 550 team approval -  grin
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T-2011 - Granite Falls HS UrbanAutos Diesel - 31.16668MPH over the measured mile  at WoS 2011.
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