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Search took 0.03 seconds. Search: Posts Made By: jime57
Forum: Aerodynamics 10-14-2013, 10:38 PM
Replies: 776
Views: 284,461
Posted By jime57
If the "smoke" is coming from the right, are we...

If the "smoke" is coming from the right, are we to believe that the folks doing the test thought the "aerofoil" would be better with the pointed end into the wind?????
Forum: Aerodynamics 06-05-2013, 02:43 PM
Replies: 776
Views: 284,461
Posted By jime57
Look, don't take my name as a recommendation for...

Look, don't take my name as a recommendation for anything going on here. There are 3-4 guys who just won't let this thing die. Each is on the third or forth repeat of basically the same argument,...
Forum: Aerodynamics 06-05-2013, 11:02 AM
Replies: 776
Views: 284,461
Posted By jime57
Is there a spreadsheet which shows the percentage...

Is there a spreadsheet which shows the percentage heights of the various sections so that one might construct a large template to lay over the top of a car? If so, I missed it.
Forum: Aerodynamics 06-03-2013, 10:23 PM
Replies: 226
Views: 93,782
Posted By jime57
It would probably "advance the art" to have...

It would probably "advance the art" to have before and after testing on the undertray. From what I've read, I think the undertray is important to the performance of the boat tail. In fact, I think...
Forum: Aerodynamics 05-24-2013, 01:39 PM
Replies: 226
Views: 93,782
Posted By jime57
Sorry to be so late. Been very busy with the...

Sorry to be so late. Been very busy with the Mid-Atlantic Meet. Here are a couple of pictures of the underbelly:

Insight Belly Pan Photos by jepting | Photobucket...
Forum: EcoModding Central 03-31-2013, 08:31 AM
Replies: 116
Views: 51,873
Posted By jime57
Yes, it is a very interesting experiment to try...

Yes, it is a very interesting experiment to try to conduct. Unfortunately, after trying the experiment a couple of times myself, as reflected in the thread, I'm only convinced that the RE92 wil...
Forum: Aerodynamics 12-07-2012, 09:07 PM
Replies: 12
Views: 3,696
Posted By jime57
Very true! On my Insight, I keep the coolant...

Very true! On my Insight, I keep the coolant temp under control in winter with only 3x6" grill block opening by carefully ducting ALL cooling air through the radiator. But, one caution, you MUST...
Forum: Aerodynamics 11-20-2012, 04:07 PM
Replies: 41
Views: 12,073
Posted By jime57
Visit to Edison2 Facility

Motored down to Lynchburgh yesterday to take a tour of the Edison 2 facility. The folks there are quite friendly and open, so you can pretty much walk in, but it is probably best to call first.
...
Forum: Aerodynamics 10-25-2012, 04:04 PM
Replies: 44
Views: 10,119
Posted By jime57
Moons Don't Help Insight

Well the very short answer is in the title.

A slightly longer version, after testing coastdown times from 70 to 50 MPH in bidirectional testing, one cannot discern any improvement or penalty in...
Forum: Aerodynamics 09-24-2012, 05:32 PM
Replies: 154
Views: 61,891
Posted By jime57
According to an earlier post by aerohead, a...

According to an earlier post by aerohead, a diffuser is an upward slanted surface which allows some recovery of pressure at the rear. This minimizes wake behind the vehicle. As the OP stated, such...
Forum: Aerodynamics 09-20-2012, 08:51 PM
Replies: 12
Views: 2,423
Posted By jime57
Would love to see it happen, but I think it is a...

Would love to see it happen, but I think it is a pipe dream:(

You are talking about a very large inverstment and very few high paying customers. We here are not representative of the general car...
Forum: Aerodynamics 08-29-2012, 08:57 AM
Replies: 43
Views: 13,929
Posted By jime57
You might want to consider adding a thicker...

You might want to consider adding a thicker radiator. With so many race cars out there, these thicker radiators have become more available and cheaper. Since they mount to the stock locations they...
Forum: Aerodynamics 07-28-2012, 08:48 AM
Replies: 110
Views: 87,282
Posted By jime57
Read through your entire thread. I had many of...

Read through your entire thread. I had many of the same issues with the Insight. Missing support points, exhaust pipes and mufflers, attachment devices - we all face a lot of common problems. Nice...
Forum: Aerodynamics 07-24-2012, 11:56 AM
Replies: 28
Views: 7,398
Posted By jime57
I have an old friend who has a shop which is...

I have an old friend who has a shop which is partially devoted to race cars. He has a nice chassis dyno and years of experience using it. He gets highly repeatable results - no small task with a...
Forum: Aerodynamics 07-23-2012, 05:46 PM
Replies: 28
Views: 7,398
Posted By jime57
Insight Gen 1 Underbelly (now with photos)

Finally got time and inclination to do a complete underbelly on my silver Insight. I used aluminum in the front and rear, where there is some heat, and 4' coroplast sections in the middle of the...
Forum: Aerodynamics 01-30-2012, 10:43 AM
Replies: 13
Views: 2,825
Posted By jime57
I'm going to put up pictures soon as I have time,...

I'm going to put up pictures soon as I have time, but I got tired of bad looking, and unreliable grill blocks and their attachments. I decided to make my blocks out of 1/16" aluminum and find a...
Forum: Aerodynamics 01-10-2012, 03:50 PM
Replies: 12
Views: 4,148
Posted By jime57
This is the approach to that Hucho says is lowest...

This is the approach to that Hucho says is lowest in Cd. Hucho points out that the approach is not appropriate for street cars because it dumps the engine compartment air at the same point as the...
Forum: EcoModding Central 01-01-2012, 09:39 PM
Replies: 116
Views: 51,873
Posted By jime57
I tried these tests myself and got a slightly...

I tried these tests myself and got a slightly different result, but only slightly.

I think that one potential problem the OP had was that his method did not adequately warm up the engine and...
Forum: Aerodynamics 12-27-2011, 01:12 PM
Replies: 58
Views: 10,068
Posted By jime57
The car and the subject have already been...

The car and the subject have already been discussed in some detail here:

http://ecomodder.com/forum/showthread.php/gm-describes-2013-chevy-malibu-eco-aerodynamic-tweaks-18528.html

That said, I...
Forum: Aerodynamics 12-16-2011, 09:11 AM
Replies: 24
Views: 9,432
Posted By jime57
Well, I thank that Frank said it best. "Wind...

Well, I thank that Frank said it best. "Wind tunnels, like chassis dynos, deliver different results in different hands," (i.e. particularly when marketing is involved - I'm giving GM a bit of...
Forum: Aerodynamics 12-10-2011, 08:20 AM
Replies: 25
Views: 9,804
Posted By jime57
And don't forget the weight of the smoke machine,...

And don't forget the weight of the smoke machine, which has to project out front by a ways;)
Forum: Aerodynamics 12-01-2011, 10:40 AM
Replies: 7
Views: 2,215
Posted By jime57
If I remember correctly, and I can't recall or...

If I remember correctly, and I can't recall or find the proper thread, Phil has said that the template was a safe conservative way to lay out the taper. He never spoke to the amount of deviation...
Forum: Aerodynamics 11-21-2011, 04:25 PM
Replies: 20
Views: 3,538
Posted By jime57
I'd not worry about having a small area transom...

I'd not worry about having a small area transom at the rear on which to mount an uncovered license plate. The last 20 percent or so of a well designed full boattail is mostly worthless, so the flat...
Forum: Aerodynamics 11-20-2011, 08:15 AM
Replies: 5
Views: 2,453
Posted By jime57
Looks like both approaches might be right. Use...

Looks like both approaches might be right. Use Foam to fill the gap, then use a bolt to the fender liner to stabalize the whole package, without putting "much" stress on the liner. As you suggested...
Forum: Aerodynamics 10-27-2011, 10:54 PM
Replies: 50
Views: 8,392
Posted By jime57
Well, it's up on youtube. Neil was right,...

Well, it's up on youtube. Neil was right, neither ISP that I use would forward the attached video via email. One service simply said as much, the other just choked and stopped without explanation....
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