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Old 07-08-2009, 04:04 PM   #421
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Back to the topic at hand...F1's

Here is a cool article about downforce generated on RC F1 cars. I don't know exactly what it says but I understand the numbers they're posting. If anyone wants to translate and post what's written I'm sure everyone would appreciat it.

http://www.rc-japan.de/presse.php
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Old 07-08-2009, 04:17 PM   #422
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See post below for the article
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Last edited by Vyger; 07-13-2009 at 11:54 AM.
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Old 07-08-2009, 04:22 PM   #423
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Quote:
Originally Posted by robk View Post
Uhhh, I was told there would be no math
blame Vyger, as he is responsible for the detour... back to our regularly scheduled programming.
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Old 07-09-2009, 12:39 PM   #424
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OK, I asked a coworker of mine to translate the basics of what was written in the article from rc-japan.de. I've tried to illustrate this below in each of the three figures. It should be allot easier to understand what they've done. Based on the pictures below Fig 2 is the base line measurements for the F104. In Fig 3 you can see the result of making changes to the body or rear wing settings. Hope you all enjoy it.

Fig 1. (below)
a. Measure front down-force
b. Measure rear down-force
c. Air duct
d. Air in-take
e. Measure drag


Fig 2. (below)
a. Drag
b. Front down-force
c. Total down-force
d. Center of wind pressure
e. Rear down-force


Fig 3. (below)
a. Center of wind pressure
b. Drag
c. Total down-force
d. Front down-force
e. Rear down-force
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Last edited by Vyger; 07-09-2009 at 12:43 PM. Reason: typo
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Old 07-09-2009, 02:44 PM   #425
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Interesting... Did I miss at what speed these values apply?
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Old 07-09-2009, 02:48 PM   #426
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Originally Posted by Zaurusman View Post
Interesting... Did I miss at what speed these values apply?
That's a great question, but I don't have an answer. Sorry
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Old 07-09-2009, 05:54 PM   #427
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Default Best Downforce bodies....

Looks like the older F1 bodies will give you substantially more downforce! That yellow body looks like an early 90's Williams or Lotus?...I could be wrong. I hope they used a windtunnel speed representative of the cars speed on an average track.
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Old 07-09-2009, 06:41 PM   #428
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at the expense of more drag.. so it really depends.
On the last page of the article, they seem to show that the tech racing body (br125) mixed with the old style rear wing, and tehc racing front wing were the best compromise..

but my japanese is spotty at best..
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Old 07-09-2009, 08:12 PM   #429
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Default F104pro Paint up....

Hey Boys...

I am new to the forum, and have all of you to blame for getting me back into F1 r/c's.

Here are some quick pic of my new F104 Pro, just waiting on my speed control....

1/10 R/C F1's...Pics, Discussions, Whatever...-20090709-dsc_0836.jpg

1/10 R/C F1's...Pics, Discussions, Whatever...-20090709-dsc_0835.jpg

1/10 R/C F1's...Pics, Discussions, Whatever...-20090709-dsc_0832.jpg

Last edited by TheInsideLine; 07-15-2009 at 09:56 PM. Reason: fixed links to pics
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Old 07-10-2009, 02:43 AM   #430
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Originally Posted by Zaurusman View Post
Interesting... Did I miss at what speed these values apply?
50KPH
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Old 07-10-2009, 02:44 AM   #431
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Quote:
Originally Posted by Manny View Post
Looks like the older F1 bodies will give you substantially more downforce! That yellow body looks like an early 90's Williams or Lotus?...I could be wrong. I hope they used a windtunnel speed representative of the cars speed on an average track.
The yellow body is the Tamiya Lotus 107.
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Old 07-10-2009, 02:50 AM   #432
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Quote:
Originally Posted by Patriiick View Post
at the expense of more drag.. so it really depends.
On the last page of the article, they seem to show that the tech racing body (br125) mixed with the old style rear wing, and tehc racing front wing were the best compromise..

but my japanese is spotty at best..
The rear wing on the Tech chassis is the new 2009 rear wing. Much taller than the 2008 style wing. More like the Cross wings.
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Old 07-14-2009, 07:26 PM   #433
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Quote:
Originally Posted by Manny View Post
Looks like the older F1 bodies will give you substantially more downforce! That yellow body looks like an early 90's Williams or Lotus?...I could be wrong. I hope they used a windtunnel speed representative of the cars speed on an average track.
I don't think it's the bodies that are necessarily producing the downforce...

it's the wings that are mounted...

and the old-school multi-element (3-element) wings always have produced more downforce..

I have one on my HPI Super F1 (came with it)
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Old 07-14-2009, 07:27 PM   #434
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Quote:
Originally Posted by TheInsideLine View Post
Hey Boys...

I am new to the forum, and have all of you to blame for getting me back into F1 r/c's.

Here are some quick pic of my new F104 Pro, just waiting on my speed control....

Attachment 474540

Attachment 474539

Attachment 474538
bad links...
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Old 07-14-2009, 07:28 PM   #435
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Quote:
Originally Posted by Vyger View Post
OK, I asked a coworker of mine to translate the basics of what was written in the article from rc-japan.de. I've tried to illustrate this below in each of the three figures. It should be allot easier to understand what they've done. Based on the pictures below Fig 2 is the base line measurements for the F104. In Fig 3 you can see the result of making changes to the body or rear wing settings. Hope you all enjoy it.

Fig 1. (below)
a. Measure front down-force
b. Measure rear down-force
c. Air duct
d. Air in-take
e. Measure drag


Fig 2. (below)
a. Drag
b. Front down-force
c. Total down-force
d. Center of wind pressure
e. Rear down-force


Fig 3. (below)
a. Center of wind pressure
b. Drag
c. Total down-force
d. Front down-force
e. Rear down-force
I bought this magazine last week... and I've been trying to find someone to translate since then.... finally an article that REALLY appeals to me
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