3,000 miles per gallon - RC Groups
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Mar 26, 2012, 12:32 PM
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UlteriorModem's Avatar
Discussion

3,000 miles per gallon


Darn thing looks like its ready to roll over any second!

http://video.foxnews.com/v/153033149...ylist_id=87937
Mar 26, 2012, 12:36 PM
SUPERDOG!
BE77 Pilot's Avatar
Yeah, I want to hit the freeway in that.
Mar 26, 2012, 01:15 PM
Registered User

Really practical...


High Pressure Slicks, great on wet (or even damp roads)

Enough room for a 5'2' coed, how's a real person going to fit.

Coasting. Great for a mileage contest, how about for that morning commute?
Mar 26, 2012, 04:07 PM
UN Earth peoples true enemy
treehog's Avatar
I do a lot of coasting with my cars

It works better for gasoline stick shift cars than my diesel automatic car

With stick shift i often get three untis of distance to one unit of acceleration typicaly on flat road I will accelerate to 60MPH and then coast back down to 40 MPH making the average speed about 45MPH
In My SX 1400 Fiat Bravo car the differences are approx driving steady state ~40MPH best case is about ~43MPG
Using coasting best case is about ~40MPG doing 60mph down to 40MPH average ~45MPH
More normally I tend to do 70Mph coasting down to 50MPH and get 35MPG versus steady state 60MPH where MPG will be more like ~30MPGhods
I still haven't figured why higher speed costing tends to be better than steady state driving at higher speeds and the opposite seems is true at lower speeds
I suspect the gear ratios are the issues and am looking to convert the final drive to higher gear rate .
Then I figure i can get 10% better MPG overall and better MPG with coasting methods across the full range

Around town commutes costing increases the MPG ~25MPG to about ~30MPG

its marginal stuff but still 5 MPG on 25 MPG in town driving is nearly 20% gain using coasting methods

On the automatic it only coast at high speeds when it goes into the 3rd th gear not overdrive like 4th so is only coasting between 50 down to 30MPH with not a lot of noticeable saving from normal 40MPG when on the highway operating at speeds from 40 to 80MPH the MPG hardly changes much

coasting on roads across flat plains where there is gentle undulations with gradual climbs and gradual down slopes seems to return better results to MPG than pure flat roads .
Coasting in mountain roads with steep climbs and steep down slopes doesn't seem to work well as so much fuel is used climbing and the engine has to tick over to supply brakes and power for the down slope that it is all marginal stuff

Ralf
Last edited by treehog; Mar 26, 2012 at 04:13 PM.
Mar 26, 2012, 04:52 PM
It's 5 O'clock Somewhere
RumRunner_1492's Avatar
Quote:
Originally Posted by treehog
I do a lot of coasting with my cars

It works better for gasoline stick shift cars than my diesel automatic car

With stick shift i often get three untis of distance to one unit of acceleration typicaly on flat road I will accelerate to 60MPH and then coast back down to 40 MPH making the average speed about 45MPH
In My SX 1400 Fiat Bravo car the differences are approx driving steady state ~40MPH best case is about ~43MPG
Using coasting best case is about ~40MPG doing 60mph down to 40MPH average ~45MPH
More normally I tend to do 70Mph coasting down to 50MPH and get 35MPG versus steady state 60MPH where MPG will be more like ~30MPGhods
I still haven't figured why higher speed costing tends to be better than steady state driving at higher speeds and the opposite seems is true at lower speeds
I suspect the gear ratios are the issues and am looking to convert the final drive to higher gear rate .
Then I figure i can get 10% better MPG overall and better MPG with coasting methods across the full range

Around town commutes costing increases the MPG ~25MPG to about ~30MPG

its marginal stuff but still 5 MPG on 25 MPG in town driving is nearly 20% gain using coasting methods

On the automatic it only coast at high speeds when it goes into the 3rd th gear not overdrive like 4th so is only coasting between 50 down to 30MPH with not a lot of noticeable saving from normal 40MPG when on the highway operating at speeds from 40 to 80MPH the MPG hardly changes much

coasting on roads across flat plains where there is gentle undulations with gradual climbs and gradual down slopes seems to return better results to MPG than pure flat roads .
Coasting in mountain roads with steep climbs and steep down slopes doesn't seem to work well as so much fuel is used climbing and the engine has to tick over to supply brakes and power for the down slope that it is all marginal stuff

Ralf
It must be an exercise in frustration to follow you on the highway.
Mar 26, 2012, 08:10 PM
Registered User
Quote:
Originally Posted by RumRunner_1492
It must be an exercise in frustration to follow you on the highway.
That reminds me of the father of an old girlfriend of mine. She had told me she was subject to carsickness, but never seemed to have a problem in my car.

Then one day her dad drove me, her and the mom to a restaurant. If the speed limit was 35, he would speed up to 40, coast down to 30, and repeat.

I've never suffered from motion sickness, but that was close!
Mar 27, 2012, 12:25 AM
Not THAT Ira
Real Ira's Avatar
Obviously not a production vehicle but a very cool engineering exercise,
Mar 27, 2012, 06:42 AM
It's ok to be white.
RCWorks's Avatar
Quote:
Originally Posted by kf2qd
Coasting. Great for a mileage contest, how about for that morning commute?
Can't you hear it....

"I was driving my Obamamobile and the coasting feature made me 6 hours late for work. Bt the way, can I get a raise?"
Mar 27, 2012, 06:52 AM
Registered User
Pudknocker71's Avatar
I'll settle for 10% of that mileage in a decent sized sedan like my Mazda 3.

Problem I'm having right now is I just got new tires. Quieter, smoother, less rolling resistance, better grip ... my average MPG just went down 3.
Mar 27, 2012, 09:21 AM
Registered User
Quote:
Originally Posted by RCWorks
Can't you hear it....

"I was driving my Obamamobile and the coasting feature made me 6 hours late for work. Bt the way, can I get a raise?"
What is it with you? Perhaps you need to see a psychiatrist about your Obama obsession...
Mar 27, 2012, 12:33 PM
It's ok to be white.
RCWorks's Avatar
Quote:
Originally Posted by Bob HSG
What is it with you? Perhaps you need to see a psychiatrist about your Obama obsession...
Did someone post to you?
Mar 27, 2012, 12:45 PM
EIEIEIO Classic is dway ta go!
flyinwalenda's Avatar
All that work building that car and the best advice they can give to drivers is "if you have to slam on your brakes coming to a stop sign you're probably using too much fuel to get there" ? Duh.....no kidding. Someone figured that out decades ago. Problem is more than half of all drivers drive like that today. You will never retrain them to drive a car using this technology.
Mar 27, 2012, 01:25 PM
Registered User
Quote:
Originally Posted by RCWorks
Did someone post to you?
I'm just curious why you would bring his name into this discussion.
Mar 27, 2012, 03:26 PM
It's ok to be white.
RCWorks's Avatar
Quote:
Originally Posted by Bob HSG
I'm just curious why you would bring his name into this discussion.
Did you fail to notice that Obama bought a major intrest in a car company and fired the CEO? Then he decides what kind of cars they will make. Just another in a long line of failures(The Chevy Volt).

Are you one of those outback guys that does not get news?
Mar 27, 2012, 03:44 PM
Registered User
UlteriorModem's Avatar
Quote:
Originally Posted by flyinwalenda
All that work building that car and the best advice they can give to drivers is "if you have to slam on your brakes coming to a stop sign you're probably using too much fuel to get there" ? Duh.....no kidding. Someone figured that out decades ago. Problem is more than half of all drivers drive like that today. You will never retrain them to drive a car using this technology.
The thing that makes me chuckle is pulling up next to a big ole truck and when the light changes Buuuuwwwwaaaahhhh off they go at full throttle usually while pulling a trailer of some sort


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