R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 05-21-2009, 03:17 PM   #16
Tech Addict
 
jamiekerr14's Avatar
 
Join Date: Dec 2008
Location: Uk
Posts: 607
Default

JConcepts.. my have had a fair few Proline ones.. all been warped when got.. so not happy.. but JConcepts one is alot stronger and imo looks better
__________________
Xray XB4
Supported By:
RC Disco
jamiekerr14 is offline   Reply With Quote
Old 05-21-2009, 03:33 PM   #17
Tech Elite
 
HaulinBass's Avatar
 
Join Date: Dec 2004
Location: valleyview alberta canada
Posts: 2,114
Trader Rating: 8 (100%+)
Default

I dont like the high downforce wing just because they look so "ricey" I also cant tell the difference in performance between the two so I run the wings I think look better.
HaulinBass is offline   Reply With Quote
Old 05-21-2009, 06:41 PM   #18
Tech Master
 
Join Date: Jan 2006
Location: Virginia
Posts: 1,807
Trader Rating: 47 (100%+)
Default

Out of all the wings mentioned, I like the Himoto V2 the best.
I have never had one warp, crack or break.
rageworks is offline   Reply With Quote
Old 05-21-2009, 09:53 PM   #19
Tech Elite
 
WheelNut's Avatar
 
Join Date: Jan 2003
Location: Edmonton, Ab
Posts: 3,208
Trader Rating: 5 (100%+)
Send a message via MSN to WheelNut
Default

Quote:
Originally Posted by DOMIT View Post
Go take a look at an airplane wing. See the curve on the top, SMOOTHLY transitioned to the leading edge? The UPPER surface of the wing produces the lift, not the lower. (ok, they both produce some, but the curve of the upper surface produces most of the lift.)

Now look at a "high downforce" wing. Flip it over. See the lip along the front? That disrupts the airflow. (Regular wings have that too.)

A regular wing without the lip would probably produce as much or more lift than a high downforce one.

Do they help? Perhaps... but they have more in common with a parachute than a wing.
You are correct. The wings that we use on R/C Cars do not use the bernoulli effect to create downforce like wings on full size cars do. The reason for this is because you can scale down the wing size, but you can't scale down the size of air molecules along with that wing. Air stays at the same density it does for full size wings, but now the size of the wing is so small and the speed is so low that there isn't enough pressure generated to create any usable downforce. This is why R/C wings are so huge in scale terms, they have to displace an enormous amount of air to create usable downforce. Think of it this way; for an R/C wing to work the same way a full size wing does the air your R/C car would have to traveling though would have to be as thick and heavy as water.

Bernoulli effect type wings have been tried before and they don't work. The drag type wings we use do work though, and since R/C cars are so overpowered the extra drag really isn't an issue.

Anyway, to the OP: The Pro-line HD wing is also very strong. I've heard that the Himoto wing was actually wind tunnel tested. There was a big controversy over it before the 06 worlds, in the end it was deemed to be legal.
__________________
•Brad Comis
WheelNut is offline   Reply With Quote
Old 05-21-2009, 11:14 PM   #20
Tech Elite
 
COBRARACING's Avatar
 
Join Date: Nov 2007
Posts: 3,302
Default

Quote:
Originally Posted by Akhor View Post
Hey,

Currently I'm running the OFNA highdown force wing. It works great however the durability is extremely low. (yes I'm not a pro driver). A few flips and it always has stress cracks after a single race. I also like it because it comes in a high visibility Orange color.

Are there any other (ie J Concepts) high down force wings that have better durability then this one? And maybe come in Orange as well!

I know the original 8ight wing is super durable and I've never encounted this issue with it.. Of course it's not a high downforce one.
Try the cobra wing it is very strong and not as big as others so hardly any weight at the chord being 76mm and super strong high down force but minimum drag so you will go fast especially through sweapers and jumps.

Give this gentlmen a call and if your willing to pay the postage he will send you out a wing free of charge .Black ,fluro yellow or white

mobile +18432414856 usa

His name is ed roberts

here is a photo of the wing

regards ANgelo
Attached Thumbnails
High Downforce Wings-yellow-wing.jpg  
__________________
Email : teamcobraracing@gmail.com or ae@hobbywing.com
Repair service Address
Hobbywing Technology Co., Ltd.
4th Floor, 3rd Building, KeLunTe Industrial Park, ShangLiLang, BuLan Road, LongGang District, ShenZhen, China
COBRARACING is offline   Reply With Quote
Old 05-22-2009, 06:04 AM   #21
Tech Master
 
Join Date: Jan 2006
Location: Virginia
Posts: 1,807
Trader Rating: 47 (100%+)
Default

No Thanks. Even for free.
rageworks is offline   Reply With Quote
Old 05-22-2009, 06:21 AM   #22
Tech Adept
 
last's Avatar
 
Join Date: Aug 2007
Location: SoFL
Posts: 197
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by rageworks View Post
No Thanks. Even for free.
Unnecessary

I don't know Cobra's products from any other but they are offering a sample of their product for free and in todays economy that is a brave and bold move that shows confidence in what you are doing. To then shot them down with out explanation is pretty weak and cowardly.

I am not getting one but that is out of laziness.
__________________
Someone's got to be Last

***Team Terribles***Answer RC USA/Torco Race fuel
last is offline   Reply With Quote
Old 05-22-2009, 06:42 AM   #23
Tech Elite
 
DOMIT's Avatar
 
Join Date: Oct 2007
Location: Fort Worth, Texas, USA, North America, Earth, Solar System, Milky Way Galaxy, Universe
Posts: 4,034
Trader Rating: 1 (100%+)
Send a message via MSN to DOMIT Send a message via Yahoo to DOMIT
Default

Quote:
Originally Posted by cary View Post
so im looking at two wings one jc hd one AE rc8 wing the jc wing has a
big lip on the front edge the AE wing don't have a lip and i do notice
i think that my car was slower with the jc wing but was thinking that
my tune was off on the fat side so what if i was to grind the lip off
my be any thoughts or just go back to the AE wing

Hmmmm... that lip is there to add strength... removing it would make the wing more aerodynamically correct, but weaken it significantly. Up to you.

Yes, the AE wing is much closer to a proper aerodynamic wing design. Too bad I can't get it without the factory holes, or I would run one... not that I really care about the aerodynamics of my '56 Ford "brick" body truck.

I use the JConcepts wing, just because of durability, and I think it looks good.
__________________
Brad "DOMIT" Smith - I'm not fast, but at least I wreck a lot.
Unsponsored, but I use/recommend: XRay XB9, Alpha A852, Dynamite 053, Airtronics M11, Hitec 5955TG & 7955TG, ABEC 35 clutch and chassis bearings, PTRCRacing shock and diff fluids, Ready Rollers ceramic engine bearings. ** Team Terribles Region 9 coordinator. ** JOIN TEAM TERRIBLES! All racers welcome! PM me for details.
DOMIT is offline   Reply With Quote
Old 05-22-2009, 06:47 AM   #24
Tech Elite
 
DOMIT's Avatar
 
Join Date: Oct 2007
Location: Fort Worth, Texas, USA, North America, Earth, Solar System, Milky Way Galaxy, Universe
Posts: 4,034
Trader Rating: 1 (100%+)
Send a message via MSN to DOMIT Send a message via Yahoo to DOMIT
Default

Quote:
Originally Posted by rageworks View Post
No Thanks. Even for free.
I'm not sure what brought that on... maybe the whole situation with Charlie? Were you involved with that?

I was... and yes, Charlie got almost $200 of my money, and I never saw anything from it. However, you can't REALLY fault Angelo for that. He seems to me like a pretty stand-up guy.

And this is also one of the few wings that is of a relatively proper aerodynamic shape.
__________________
Brad "DOMIT" Smith - I'm not fast, but at least I wreck a lot.
Unsponsored, but I use/recommend: XRay XB9, Alpha A852, Dynamite 053, Airtronics M11, Hitec 5955TG & 7955TG, ABEC 35 clutch and chassis bearings, PTRCRacing shock and diff fluids, Ready Rollers ceramic engine bearings. ** Team Terribles Region 9 coordinator. ** JOIN TEAM TERRIBLES! All racers welcome! PM me for details.
DOMIT is offline   Reply With Quote
Old 05-22-2009, 06:50 AM   #25
Tech Elite
 
DOMIT's Avatar
 
Join Date: Oct 2007
Location: Fort Worth, Texas, USA, North America, Earth, Solar System, Milky Way Galaxy, Universe
Posts: 4,034
Trader Rating: 1 (100%+)
Send a message via MSN to DOMIT Send a message via Yahoo to DOMIT
Default

Quote:
Originally Posted by WheelNut View Post
You are correct. The wings that we use on R/C Cars do not use the bernoulli effect to create downforce like wings on full size cars do. The reason for this is because you can scale down the wing size, but you can't scale down the size of air molecules along with that wing. Air stays at the same density it does for full size wings, but now the size of the wing is so small and the speed is so low that there isn't enough pressure generated to create any usable downforce. This is why R/C wings are so huge in scale terms, they have to displace an enormous amount of air to create usable downforce. Think of it this way; for an R/C wing to work the same way a full size wing does the air your R/C car would have to traveling though would have to be as thick and heavy as water.

Bernoulli effect type wings have been tried before and they don't work. The drag type wings we use do work though, and since R/C cars are so overpowered the extra drag really isn't an issue.

Anyway, to the OP: The Pro-line HD wing is also very strong. I've heard that the Himoto wing was actually wind tunnel tested. There was a big controversy over it before the 06 worlds, in the end it was deemed to be legal.

While it is true that the Reynolds Number of an RC car wing is very low... the effect is still there. A more pronounced camber on the lower surface would both increase the downforce AND make it stronger... of course the wing would have to be hollow or have a lightweight core to not be ludicrously heavy.

A place to start on airfoils are the ones used on smaller scale RC aircraft.
__________________
Brad "DOMIT" Smith - I'm not fast, but at least I wreck a lot.
Unsponsored, but I use/recommend: XRay XB9, Alpha A852, Dynamite 053, Airtronics M11, Hitec 5955TG & 7955TG, ABEC 35 clutch and chassis bearings, PTRCRacing shock and diff fluids, Ready Rollers ceramic engine bearings. ** Team Terribles Region 9 coordinator. ** JOIN TEAM TERRIBLES! All racers welcome! PM me for details.
DOMIT is offline   Reply With Quote
Old 05-22-2009, 10:01 PM   #26
Tech Elite
 
COBRARACING's Avatar
 
Join Date: Nov 2007
Posts: 3,302
Default

Quote:
Originally Posted by DOMIT View Post
I'm not sure what brought that on... maybe the whole situation with Charlie? Were you involved with that?

I was... and yes, Charlie got almost $200 of my money, and I never saw anything from it. However, you can't REALLY fault Angelo for that. He seems to me like a pretty stand-up guy.

And this is also one of the few wings that is of a relatively proper aerodynamic shape.
Thanks brad for your support and im sorry for what has happened with charlie because of what had happened i sent out free wings to ed roberts to send out to the guys as a good gesture from me even though what charlie did had nothing to do with me but i felt sorry for the guys and im trying to do even more soon for them and again it was never my fault but thats just the guy i am i believe in my product and would do anything for anyone to help them in time of need maybe thats why im not rich but im happy and thats all that matters .

You will get some people putting me down but that doesnt matter as you cannot please everyone and those people only know one side of every story .

But yes you are correct as you said about the lip distrurbing the airflow on the leading edge and trailing edge but as you know we rectify that problem on the trailing edge with our aero fins which cut the air once again and the trailing edge channels that release the flow reducing the drag .

anyway thank you once again for your support brad and everyone else who believes in my products it really means alot sincerly.

regards Angelo
__________________
Email : teamcobraracing@gmail.com or ae@hobbywing.com
Repair service Address
Hobbywing Technology Co., Ltd.
4th Floor, 3rd Building, KeLunTe Industrial Park, ShangLiLang, BuLan Road, LongGang District, ShenZhen, China
COBRARACING is offline   Reply With Quote
Old 05-22-2009, 10:09 PM   #27
Tech Elite
 
COBRARACING's Avatar
 
Join Date: Nov 2007
Posts: 3,302
Default

Quote:
Originally Posted by rageworks View Post
No Thanks. Even for free.
Im deeply sorry you feel that way but if i have done something wrong to you please write me an email so we can discuss things further on what i did to you and how we can fix it and move on whoever you are .

take care freind

regards Angelo
__________________
Email : teamcobraracing@gmail.com or ae@hobbywing.com
Repair service Address
Hobbywing Technology Co., Ltd.
4th Floor, 3rd Building, KeLunTe Industrial Park, ShangLiLang, BuLan Road, LongGang District, ShenZhen, China
COBRARACING is offline   Reply With Quote
Old 05-23-2009, 08:56 AM   #28
Tech Master
 
Join Date: Nov 2005
Location: North Port, Florida
Posts: 1,116
Default

The best High Downforce wings I have tried are VP Pro wings.

www.VP-Pro-USA.com

Try it out, you won't be dissappointed.

Machine's R/C H is offline   Reply With Quote
Old 05-23-2009, 11:13 AM   #29
Tech Master
 
Akhor's Avatar
 
Join Date: Feb 2008
Location: Alberta,Canada
Posts: 1,280
Trader Rating: 7 (100%+)
Default

Quote:
Originally Posted by Machine's R/C H View Post
The best High Downforce wings I have tried are VP Pro wings.

www.VP-Pro-USA.com

Try it out, you won't be dissappointed.

Looks exactly like the OFNA wing.. I doubt it would standup.
__________________
--Blaine--
VBC D07, VBC D08
Mugen MBX 7, Mugen MBX 7 Eco,Mugen MBX 7r, Mugen MBX 7r Eco
www.rcgears.net, www.carcar.ca, www.karz.ca
Akhor is offline   Reply With Quote
Old 05-25-2009, 12:49 AM   #30
Tech Regular
 
Join Date: Aug 2008
Location: Leamington Spa, UK
Posts: 327
Trader Rating: 2 (100%+)
Default

Saw this thread on Friday, but thought I would test out the Cobra Racing wings and proline HD ones before posting.
I first bought a TCR one as it looked interesting whilst ordering stuff from amain (I am in the UK). I really liked the way it calmed down the rear end and helped during flight, but the plastic was a too brittle with not enough flex in it to withstand any major tumbles. So I changed back to the Proline ones, and it was completely different, with the back end stepping out and everything. So we looked for some more TCR wings, but amain didn't stock them anymore, so we bought 6 from eBay. I have boiled these ones, and apart from the odd imperfection, I have only broken 1 in about 5months of running (the winter was exceptionally cold here).

Also, my Dad works in F1 so took both the Proline, and TCR wings into work, and asked the aerodynamicists which was better, and they immediately said the TCR one. Just a pointer, that to get superior down force, the two elements must overlap about 4mm, and there should be a gurney flap at 90degrees to the top or the wing, pointing towards the front of the car. This will increase drag slightly but will allow a LOT more down force. Plus the parts that stick up in along the length of the wing (not sure what they are called) should be full height, to give more cornering stability.

I am weary that if I get comfortable with the TCR wings that when I have to return to Proline, I will not be happy with it. My only qualm is that the plastic needs to be more flexible.

Is TCR distributed to the UK? Or is it solely America. If just America, then I think you should consider exporting to the UK, as many people look at mine, and ask where I got it from, and are interested in it due to it's radical looks.

Hope this helps,
Scott
lazyboy12300 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
RC10B4/T4 Forum DerekL Electric Off-Road 14331 01-01-2016 02:18 PM
Team Associated B44. Race, Tune and Modify Shadows Electric Off-Road 6171 08-09-2015 07:32 AM
R/C Stuff Selling Kenneth Tan Singapore R/C Racers 45728 09-09-2009 07:19 AM
HIGH DOWN FORCE WINGS Nitroboy Nitro Off-Road 146 12-06-2008 07:47 PM
Himoto High Down Force Wing v2 MadRacer Nitro Off-Road 6 03-24-2008 11:50 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 07:41 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net