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Search: Posts Made By: graydonengineering
Forum: Success Stories 02-24-2012, 10:06 AM
Replies: 9
Views: 2,542
Posted By graydonengineering
Turtle New rout, 12 more stop lights and 37mpg! (in a Nissan Frontier 5-speed pickup truck)

Yet again I am finding, the slower the rout, the better my mpg is. If I go to work on the Freeway/highway rout I can get 31 mpg at best but 28 average.

This new rout goes through town and all the...
Forum: EcoModding Central 02-22-2012, 04:50 PM
Replies: 10
Views: 7,723
Posted By graydonengineering
I am a 9 to 5 CAD user with rapid prototype...

I am a 9 to 5 CAD user with rapid prototype experience as I would agree with what as been said. 3D prints tend to be brittle and fragile. The layering/cooling of the material leaves a part that is...
Forum: Aerodynamics 08-22-2011, 02:54 PM
Replies: 38
Views: 20,838
Posted By graydonengineering
Just a little update, I have not had time to do...

Just a little update, I have not had time to do any major work lately and ran out of chloroplast again but I did delete the wipers over the weekend. I rain-xed the glass which should be good enough...
Forum: Aerodynamics 08-15-2011, 10:04 PM
Replies: 392
Views: 156,072
Posted By graydonengineering
looking smoother every day! It is really starting...

looking smoother every day! It is really starting to take shape. Looks like the profile is comming out very nicely.
Forum: Aerodynamics 08-15-2011, 09:56 PM
Replies: 358
Views: 128,216
Posted By graydonengineering
I am finding with my belly pan project that items...

I am finding with my belly pan project that items that I thought would net the best gain have not done so.. I figured once I finished the rear axle to rear bumper section, I would have a measurable...
Forum: Aerodynamics 08-15-2011, 09:26 PM
Replies: 75
Views: 26,859
Posted By graydonengineering
Has anyone experimented with a fiber-optic...

Has anyone experimented with a fiber-optic mirror? The thought is, the end of the fiber-optic cable could point backward off the side of the car and go through the door to the inside. The image could...
Forum: Aerodynamics 08-15-2011, 03:14 PM
Replies: 38
Views: 20,838
Posted By graydonengineering
Sure thing, I will take some measurments later on...

Sure thing, I will take some measurments later on and post them. Bear in mind, this is a 2wd that has been lowered about 2" front and rear and as a result, if your truck has not been lowered, the...
Forum: Aerodynamics 08-14-2011, 08:04 PM
Replies: 38
Views: 20,838
Posted By graydonengineering
Turtle The wheel well test drive was a sucess! On my 15...

The wheel well test drive was a sucess! On my 15 mile drive to work I was able to hit a new record for 1 way mpg at 35.4! I was able to glide very nice long distances. Boxing off the wheel wells and...
Forum: Aerodynamics 08-14-2011, 05:43 PM
Replies: 38
Views: 20,838
Posted By graydonengineering
Update

I am happy to report, the vent I installed under the engine did provide enough cooling to eliminate the hot firewall problem I had before at 100 degree plus temps. I did fine that the increase intake...
Forum: Aerodynamics 08-11-2011, 07:03 PM
Replies: 169
Views: 60,750
Posted By graydonengineering
Gives the front end that smooth EV car look....

Gives the front end that smooth EV car look. Nice! How did you decide keep them held in place?
Forum: Aerodynamics 08-10-2011, 06:34 PM
Replies: 392
Views: 156,072
Posted By graydonengineering
Cool! Can't wait to see how it performs for ya.

Cool! Can't wait to see how it performs for ya.
Forum: Aerodynamics 08-10-2011, 03:46 PM
Replies: 4
Views: 1,797
Posted By graydonengineering
I think you could make the front part "invisible"...

I think you could make the front part "invisible" to by mating it up to the back of the cab with some type of plastic trim and setting the slope angle to around 12 degrees. I don't expect that you...
Forum: Aerodynamics 08-09-2011, 03:42 PM
Replies: 38
Views: 20,838
Posted By graydonengineering
Thanks! I have been able to average 30 or better...

Thanks! I have been able to average 30 or better on my drive to work which is 6+ mpg over what I used to get before I discovered this forum. That's a 20% increase as a result of my combined mod...
Forum: Aerodynamics 08-09-2011, 01:28 AM
Replies: 38
Views: 20,838
Posted By graydonengineering
almost done!

I put in the last major section tonight, from the rear axle to the rear bumper. It needs some refinement still. I would say the whole job is about 80% done. I look forward to a new commute average!...
Forum: Aerodynamics 08-07-2011, 04:51 AM
Replies: 38
Views: 20,838
Posted By graydonengineering
I have noticed that but I never realized what it...

I have noticed that but I never realized what it was for, now it makes a bit more sense. The vent I added in the pan and a fairly small hole in the driver side wheel well of about 4" squared are the...
Forum: Instrumentation 08-05-2011, 02:57 PM
Replies: 3
Views: 1,524
Posted By graydonengineering
I can now verify, it does stay on fast. You don't...

I can now verify, it does stay on fast. You don't need to change it every time. The data delay is quite a bit less. I like it!
Forum: Introductions 08-04-2011, 01:01 AM
Replies: 6
Views: 1,304
Posted By graydonengineering
Yes, the jetta TDI is a great car for mpg. It is...

Yes, the jetta TDI is a great car for mpg. It is very hard to find a late model pickup that is small enough to pull good mpg. I like to think my truck is the best of both worlds as I get better mpg...
Forum: Instrumentation 08-02-2011, 11:04 PM
Replies: 3
Views: 1,524
Posted By graydonengineering
ScanGauge II faster response

I just learned a way to decrease the lag of data to the ScanGauge II! If the delay on the scan gauge II is too slow just increase the rate in the more>more>rate screen to "fast." I don't know why...
Forum: Success Stories 08-01-2011, 03:58 PM
Replies: 16
Views: 2,649
Posted By graydonengineering
If you drive so slow that it's time to stop again...

If you drive so slow that it's time to stop again by the time you are up to speed in the city, your mpg will be very poor. Mpg as you accelerate is bad no matter what, your better off getting it over...
Forum: EcoModding Central 07-29-2011, 05:27 PM
Replies: 22
Views: 9,814
Posted By graydonengineering
I agree! I have found faster acceleration...

I agree! I have found faster acceleration improves my mpg. That said, obviously flooring it and reving up to redline is not the right idea but accelerating "briskly" so you can settle into a high...
Forum: Aerodynamics 07-29-2011, 03:16 PM
Replies: 38
Views: 20,838
Posted By graydonengineering
Drive impressions and results: First...

Drive impressions and results:

First impressions:
I drove to work with the 2/3 belly pan and boy o boy and I a fan! :) The truck was very willing to accelerate to 75 on the freeway which was...
Forum: Hypermiling / EcoDriver's Ed 07-25-2011, 04:25 AM
Replies: 25
Views: 3,927
Posted By graydonengineering
I agree. I don't try to conserve because I...

I agree. I don't try to conserve because I couldn't afford to get to work otherwise. I do it because wasting resources just seems senseless. Why use 400 gallons of fuel a year when 300 could do if I...
Forum: Aerodynamics 07-23-2011, 02:25 AM
Replies: 23
Views: 7,054
Posted By graydonengineering
The intro: ...

The intro:
http://www.youtube.com/watch?v=9iof3_gjH5o

In the drivers seat test
http://www.youtube.com/watch?v=hIUtlKe4McI
Forum: EcoModding Central 07-22-2011, 03:33 PM
Replies: 18
Views: 2,264
Posted By graydonengineering
With the roads around here I get much better mpg...

With the roads around here I get much better mpg in the city so the proposed ratio would put me much further ahead of EPA than I am. The speeds are 45 in town and the lights are far appart. I...
Forum: Aerodynamics 07-22-2011, 12:08 PM
Replies: 169
Views: 60,750
Posted By graydonengineering
You could mount a threaded insert on the...

You could mount a threaded insert on the underside of the bumper, drill a hole through the foam alaigned to the insert, and run a long bolt, up from the bottom. a 5/16" button head cap screw can be...
Showing results 1 to 25 of 27

 
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