R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 05-06-2012, 08:53 PM   #3556
Tech Apprentice
 
Serpent Guy's Avatar
 
Join Date: Feb 2012
Posts: 67
Default

Quote:
Originally Posted by Martin Crisp View Post
Sorry I took so long to get back to you
dont worry about it i appreciate your help

i will give you setting a try on tuesday, do you recommend changing them one at a time or just doing it all at once?
Serpent Guy is offline   Reply With Quote
Old 05-06-2012, 09:51 PM   #3557
Tech Adept
 
Join Date: Jun 2010
Location: Idaho
Posts: 187
Trader Rating: 3 (100%+)
Default S411 Limited Edition #001

Question:
LE #001, appears in ad photos......so what car is in the photo?
Was Car #001 assembled, or is it a "Clone" shown in the photos of the assembled car??? (Did they make an "extra" chassis for the prototype?)
Weird....
red7fifty is offline   Reply With Quote
Old 05-07-2012, 12:25 AM   #3558
Tech Master
 
pcar951's Avatar
 
Join Date: Dec 2005
Location: Cow Town
Posts: 1,647
Trader Rating: 19 (100%+)
Default

Quote:
Originally Posted by Johnny Wishbone View Post

I have about 6 months of parts to test on carpet and now that crazy mod class, should be fun. Although the Island race really sounds interesting.........are there any others in the works? We are always up for racing.
Only the "Driven" car show at the Olympic Oval here in June (9th I think). Usually a great race day, you may have been. Watch our thread for updates.
__________________
Jim Chapman
PM Hobbycraft | RCAmerica | Xray | Hudy | Reds Racing
pcar951 is offline   Reply With Quote
Old 05-07-2012, 04:38 AM   #3559
Tech Regular
 
Join Date: Feb 2007
Posts: 401
Trader Rating: 7 (100%+)
Default

Martin when you get a chance can you give a detailed explanation of camber link outboard shimming and it's effect on the car.. IE what you expect from 3mm in an 3mm outboard shimming..

Thanks
__________________
TEAM Black Ops.
NUCRPTRACER is offline   Reply With Quote
Old 05-07-2012, 05:47 AM   #3560
Tech Regular
 
rdlkgliders's Avatar
 
Join Date: Feb 2006
Location: So. Cal High Desert Hobbies
Posts: 458
Trader Rating: 21 (96%+)
Default

Not to answer for Martin but in my experience; I use to run the 3mm in and out on the rear link. I now run the 3mm out and 4mm inboard. raising the inboard link should lower the RC giving you more grip. I believe it is do to an increase in roll. (leverage on the car)
Dr Crisp can explain why.
__________________
Serpent, KO Propo, Viper, Savox, ProTek
Team Waldorf Racing

Your not lapping me, you just caught up to me again!!!
rdlkgliders is offline   Reply With Quote
Old 05-07-2012, 06:03 AM   #3561
Tech Elite
 
celt's Avatar
 
Join Date: Jan 2004
Location: /dev/null
Posts: 2,192
Trader Rating: 5 (100%+)
Default

Quote:
Originally Posted by Johnny Wishbone View Post
I really like the snake the more I run it, and the more I run it, the more others start asking about it.
Mr. Wishbone...

Ran your 17.5 blinky setup this weekend and the car was faultless, and corner speed maniacal.

Awesome setup for anyone running this class.

http://www.petitrc.com/reglages/serp...401/index.html
__________________
"Soon they will get everything they deserve. This isn't about trite elitism, but the otherwise intellectual and educated classes refusing to think for themselves. I call it situational ignorance, and painfully intolerable."

Stan Garvin
celt is online now   Reply With Quote
Old 05-08-2012, 03:18 AM   #3562
Tech Adept
 
Join Date: Jun 2010
Location: Idaho
Posts: 187
Trader Rating: 3 (100%+)
Default

Celt....
That's the funniest avatar in your I.D. lol.... We've all had those days!
red7fifty is offline   Reply With Quote
Old 05-08-2012, 05:47 AM   #3563
Tech Elite
 
celt's Avatar
 
Join Date: Jan 2004
Location: /dev/null
Posts: 2,192
Trader Rating: 5 (100%+)
Default

Quote:
Originally Posted by red7fifty View Post
Celt....
That's the funniest avatar in your I.D. lol.... We've all had those days!
Thanks...

I'm a UNIX / Network admin by profession. The avatar is more fitting than I would like to admit.
__________________
"Soon they will get everything they deserve. This isn't about trite elitism, but the otherwise intellectual and educated classes refusing to think for themselves. I call it situational ignorance, and painfully intolerable."

Stan Garvin
celt is online now   Reply With Quote
Old 05-08-2012, 04:18 PM   #3564
Tech Elite
 
Johnny Wishbone's Avatar
 
Join Date: Feb 2006
Posts: 3,285
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by red7fifty View Post
Question:
LE #001, appears in ad photos......so what car is in the photo?
Was Car #001 assembled, or is it a "Clone" shown in the photos of the assembled car??? (Did they make an "extra" chassis for the prototype?)
Weird....
That might be a question better asked on the Serpent site, as we don't get the main factory guys from Europe on here very often if ever.
__________________
Gary Lanzer
Team VBC HK
Team R1WURKS
Johnny Wishbone is offline   Reply With Quote
Old 05-08-2012, 04:22 PM   #3565
Tech Elite
 
Johnny Wishbone's Avatar
 
Join Date: Feb 2006
Posts: 3,285
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by celt View Post
Mr. Wishbone...

Ran your 17.5 blinky setup this weekend and the car was faultless, and corner speed maniacal.

Awesome setup for anyone running this class.

http://www.petitrc.com/reglages/serp...401/index.html

Thanks, hope it works well for you.

I've used that setup now for several tracks, only changing ride height (same droop) and springs, and it feels nice.
__________________
Gary Lanzer
Team VBC HK
Team R1WURKS
Johnny Wishbone is offline   Reply With Quote
Old 05-09-2012, 09:01 PM   #3566
Tech Elite
 
kschu's Avatar
 
Join Date: Mar 2007
Location: Kota Kinabalu,Sabah
Posts: 4,598
Trader Rating: 16 (100%+)
Send a message via MSN to kschu
Default

the guy in my place tested this and their car run quite well.

Steering Brace
__________________
Give the best while u can !
kschu is offline   Reply With Quote
Old 05-09-2012, 09:46 PM   #3567
Tech Fanatic
 
Martin Crisp's Avatar
 
Join Date: Oct 2003
Location: Toronto Canada
Posts: 822
Default

Quote:
Originally Posted by NUCRPTRACER View Post
Martin when you get a chance can you give a detailed explanation of camber link outboard shimming and it's effect on the car.. IE what you expect from 3mm in an 3mm outboard shimming..

Thanks
Quote:
Originally Posted by rdlkgliders View Post
Not to answer for Martin but in my experience; I use to run the 3mm in and out on the rear link. I now run the 3mm out and 4mm inboard. raising the inboard link should lower the RC giving you more grip. I believe it is do to an increase in roll. (leverage on the car)
Dr Crisp can explain why.

As rdlkgliders indicates, having more shims inboard will lower the RC. Conversely if you have more shims outboard you will raise the RC. However to clarify, when you lower the RC you typically get less grip at that end of the car because that end of the car rolls more reducing the over grip of the two tires at that end of the car. The greater the difference in vertical load on the two tires at that end of the car (ie. more lateral weight transfer) the less overall lateral grip the car will have. This is due to something called the tire performance curve, which is explained in more detail in my app (http://www.setupworkbench.com).

What is interesting here is that a high roll center on one hand reduces the vertical load on the outside tire by reducing roll, but it also increase vertical load on the outside tire by increasing roll resistance. From the research I did, it seems determining which causes the greater difference in vertical load between the inside and outside tire, is very complex to calculate and in some situations can go one-way or the other. Given that, I rely on my testing results to tell me what is likely happening with our RC cars. From my testing a low roll center has less lateral grip than a high roll center, so I conclude from this that the roll has a greater impact on the difference in vertical load on the inside and outside tires. I think this is the case with our RC cars, because they tend to roll a lot for scale, compared to say full scale touring race cars.

Thus with a higher roll center causing the car to roll less and thus the more evenly the vertical load is spread across the inside and outside tire, you will have more lateral grip.

On high grip carpet I run a lower RC than on asphalt, because I am trying to reduce the chance of traction roll with a high RC causing too much lateral grip. On an asphalt track I run a higher RC to generate more lateral grip. That's why when you look at the asphalt setup I posted over the weekend the RC is a fair bit higher than the setup I run on carpet.

I hope this helps

Cheers
__________________
Martin Crisp
SetupWorkbench.com | Power-Story.com | LearnSetup.com
Martin Crisp is offline   Reply With Quote
Old 05-10-2012, 02:17 AM   #3568
Tech Addict
 
Robert_K's Avatar
 
Join Date: Jun 2008
Location: Netherlands, Sweet Lake City
Posts: 500
Trader Rating: 2 (100%+)
Default

Martin,

Superb piece of explaning. And as far as I know, I expierence the same. But How can you connect this with cornerspeed. As far as I understand with a lower rollcenter the car has the highest cornerspeed. But am I correct?

Regards Robert
__________________
Sponsored by: Schumacher Racing and Dualsky
Supported by: Shepherd Benelux and Thunder Tiger.
Robert_K is offline   Reply With Quote
Old 05-10-2012, 07:35 AM   #3569
Tech Master
 
Benzaah's Avatar
 
Join Date: Feb 2008
Location: Australia
Posts: 1,966
Trader Rating: 21 (96%+)
Thumbs down

Quote:
Originally Posted by Martin Crisp View Post
when you look at the asphalt setup I posted over the weekend the RC is a fair bit higher than the setup I run on carpet.

I hope this helps

Cheers
Martin, some questions regarding your asphalt set up. Interesting to see you end up with 3mm of shims on the V2 steering. Did you work up to this? How was your front tyre wear(ring of death)? I'm keen to try it this weekend at practice but there are a few gaps Im hoping you can fill. what brand oils are you using? what holes are your shocks running on the towers? What wheelbase shims were you running in the rear? and how much EPA did you run on the transmitter?
Regards Benzaah
__________________
AERCCC - ARCR - RRCSA

Adelaide RC

Walter Rc Hobby
Benzaah is offline   Reply With Quote
Old 05-10-2012, 02:40 PM   #3570
Tech Regular
 
Join Date: Feb 2007
Posts: 401
Trader Rating: 7 (100%+)
Default

Martin let me better explain myself.. If you run 3mm inboard and 3mm outboard at the same time what does that actually do? It would seem that the RC would be the RC at that point as the link angle would be the same just higher right? Or is that just a fractional change? Just trying to figure out how shimming both up does for the car..
__________________
TEAM Black Ops.
NUCRPTRACER is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Batu Kawan Rc Track Tongga Malaysian R/C Racers 10418 06-28-2016 11:34 PM
DRCW Raceway Chesapeake, VA // Asphalt / Indoor Off Road / Outdoor Off Road stiltskin Racing Forum 10278 11-14-2014 07:39 AM



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 07:11 AM.


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

SEO by vBSEO 3.5.0