R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 02-06-2006, 05:23 PM   #13381
Tech Elite
 
seaball's Avatar
R/C Tech Charter Subscriber
 
Join Date: Sep 2001
Posts: 4,303
Trader Rating: 9 (100%+)
Send a message via Yahoo to seaball
Arrow

gutes glück zu jeder beim snowbirds.

ich sehe sie in stockton!

__________________
*** The Gate II - Home of Mike Wise ***
seaball is offline   Reply With Quote
Old 02-06-2006, 05:31 PM   #13382
Tech Champion
 
Kevin K's Avatar
 
Join Date: Aug 2001
Location: In a land of mini-mighty mental giants
Posts: 8,764
Trader Rating: 32 (100%+)
Send a message via AIM to Kevin K Send a message via Yahoo to Kevin K
Default

Quote:
Originally Posted by seaball
gutes glück zu jeder beim snowbirds.

ich sehe sie in stockton!

Haben Sie eine Gewehrkugel in Ihrem Kopf?
__________________
2013 USVTA World Champion of the World
MOTIV RC presents the Midwest All-Star Carpet Series....14th year running 2016/17!!!
USVTA National Championship....check it out!!!
Im only responsible for what I say NOT what you understand.
Kevin K is offline   Reply With Quote
Old 02-06-2006, 05:35 PM   #13383
Tech Regular
 
Ill Factor's Avatar
 
Join Date: Jan 2002
Location: Cali
Posts: 489
Trader Rating: 2 (100%+)
Default

Hey guys. The following question is being asked with zero malice involved. I have a buddy who has an EC and It looks as though the topdeack has been raised, in a time when almost every company has gone to great lengths to lower CG it seems shall we say "against the grain". I have driven Shuies before so I am familiar with them and to me this looks to be the tallest I can remember (my 1st was the Axis Pro). Is there something else in the design that helps to counteract the high CG or is CG like the Colts (overy hyped)?

I was also surprised to see it come with a spool as the average club racer seems to struggle with them.

I look forward to seeing them on the track.
Ill Factor is offline   Reply With Quote
Old 02-06-2006, 06:06 PM   #13384
Tech Champion
 
Jon Kerr's Avatar
 
Join Date: Jul 2002
Location: San Diego
Posts: 9,658
Trader Rating: 17 (100%+)
Default

Quote:
Originally Posted by seaball
gutes glück zu jeder beim snowbirds.

ich sehe sie in stockton!

It's been 10 years since high school German class. I understood it, but no way could I write a reply.
Jon Kerr is offline   Reply With Quote
Old 02-06-2006, 06:35 PM   #13385
Tech Elite
 
cornerspeed's Avatar
 
Join Date: Sep 2001
Location: San Diego
Posts: 2,386
Default

Quote:
Originally Posted by STLNLST
cornerspeed- Just bring some Jaco's doublepink rears and Oranger double pink fronts and you will be fine. DON'T BRING THE WRAPS the bite isn't high enough for a club race for them to be a factor. Start out with Mo's set up and go from there. His has a bit more steering than mine. It all depends on your driving style.

I was hoping one of you guys up there will get a couple sets for me and true them so I will be set to go right away. Need all the practice I can get. My truer sucks and its hard to find foams around here ya know. I will pay for them and the labor.
__________________
Donny Vinkemulder
TLR Driver
TLR 8ight 3.0 - NovarossiUSA - Spektrum DX3R Pro - Losi Nitrotane VP 30% - Losi Lipo Batteries - Proline Tires - DE Racing - EKD Paint
--- Special thanks to: Dyno, Adam, Todd, and Kevin. Horizon Hobby
cornerspeed is offline   Reply With Quote
Old 02-06-2006, 06:45 PM   #13386
Tech Elite
 
HarshGuy's Avatar
 
Join Date: Aug 2001
Location: Roseville, CA
Posts: 3,379
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by Jon Kerr
It's been 10 years since high school German class. I understood it, but no way could I write a reply.
It's been longer for me since my High School German class ..the only thing I remember is (sp?)

Du bist eine kliene, schiese, shvien hund
__________________
http://www.arroyoc.com
http://www.gearchart.com
http://www.weracemountainbikes.com
HarshGuy is offline   Reply With Quote
Old 02-06-2006, 07:00 PM   #13387
Tech Master
 
Join Date: Oct 2002
Location: Toronto
Posts: 1,292
Trader Rating: 13 (100%+)
Default

Quote:
Originally Posted by Ill Factor
Hey guys. The following question is being asked with zero malice involved. I have a buddy who has an EC and It looks as though the topdeack has been raised, in a time when almost every company has gone to great lengths to lower CG it seems shall we say "against the grain". I have driven Shuies before so I am familiar with them and to me this looks to be the tallest I can remember (my 1st was the Axis Pro). Is there something else in the design that helps to counteract the high CG or is CG like the Colts (overy hyped)?

I was also surprised to see it come with a spool as the average club racer seems to struggle with them.

I look forward to seeing them on the track.
Athough the topdeck may be a little higher then the recent crop of chassis' there are so many other factors that cause an increase in CG such as mounting your received on your steering servo (as I have seen quite a few times) ...

Although lower CG may improve performance it must be shared across the entire platform.
duckman996 is offline   Reply With Quote
Old 02-06-2006, 07:13 PM   #13388
Tech Adept
 
Iain's Avatar
 
Join Date: Dec 2004
Location: Brisbane
Posts: 181
Default

Quote:
Originally Posted by Ill Factor
Hey guys. The following question is being asked with zero malice involved. I have a buddy who has an EC and It looks as though the topdeack has been raised, in a time when almost every company has gone to great lengths to lower CG it seems shall we say "against the grain". I have driven Shuies before so I am familiar with them and to me this looks to be the tallest I can remember (my 1st was the Axis Pro). Is there something else in the design that helps to counteract the high CG or is CG like the Colts (overy hyped)?

I was also surprised to see it come with a spool as the average club racer seems to struggle with them.

I look forward to seeing them on the track.
I can certainly see your point, the EC is the tallest of the tourer's, but honestly, how much does a top deck weigh?? Not much, even the bulkeahds wouldn't weigh a great deal, so while I think the EC's COG would be higher than the 415's and copies, I don't think it would be a massive difference that would mean a lot in the handling.

Plus, I like the fact that the EC is different to the 415!! All these new cars are just clones of each other.....

Iain
Iain is offline   Reply With Quote
Old 02-06-2006, 07:35 PM   #13389
Tech Elite
 
cornerspeed's Avatar
 
Join Date: Sep 2001
Location: San Diego
Posts: 2,386
Default

Quote:
Originally Posted by STLNLST
cornerspeed- Just bring some Jaco's doublepink rears and Oranger double pink fronts and you will be fine. DON'T BRING THE WRAPS the bite isn't high enough for a club race for them to be a factor. Start out with Mo's set up and go from there. His has a bit more steering than mine. It all depends on your driving style.
Whats the WRAPS?

PF Pontiac G6 or something else? Hope I can find something.
__________________
Donny Vinkemulder
TLR Driver
TLR 8ight 3.0 - NovarossiUSA - Spektrum DX3R Pro - Losi Nitrotane VP 30% - Losi Lipo Batteries - Proline Tires - DE Racing - EKD Paint
--- Special thanks to: Dyno, Adam, Todd, and Kevin. Horizon Hobby
cornerspeed is offline   Reply With Quote
Old 02-06-2006, 08:11 PM   #13390
Tech Champion
 
STLNLST's Avatar
 
Join Date: Sep 2001
Location: Sacramento
Posts: 8,768
Trader Rating: 17 (100%+)
Default

[QUOTE=cornerspeed]Whats the WRAPS?

PF Pontiac G6 or something else? Hope I can find something. [/QUOTE

Wraps are the 2 stage tire's that guys have been running at the bigger carpet races. As far as tire's go.....I don't have extra's set aside already trued up and ready to go. Most of us are running the G6 body so you should be set in that department. Truing tire's won't be that hard at the track.
__________________
REMEMBER THE GOOD OLE DAYS..........THEY'RE NEVER COMING BACK SO WE'RE STUCK WITH THE MESS IN FRONT OF US!!!!
STLNLST is offline   Reply With Quote
Old 02-06-2006, 08:12 PM   #13391
Tech Regular
 
Ill Factor's Avatar
 
Join Date: Jan 2002
Location: Cali
Posts: 489
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by Iain
I can certainly see your point, the EC is the tallest of the tourer's, but honestly, how much does a top deck weigh?? Not much, even the bulkeahds wouldn't weigh a great deal, so while I think the EC's COG would be higher than the 415's and copies, I don't think it would be a massive difference that would mean a lot in the handling.

Plus, I like the fact that the EC is different to the 415!! All these new cars are just clones of each other.....

Iain
True they are clones but they are clones for a reason. Tamiya has shown by it's two straight IFMARS that they can engineer.

I can say that I noticed a difference between my standard 415 and my new T2 when talking about corner speed and I have them set up similarly. I wouyld be interested to know what you guys find as you drive it more. Oh and thanks for not flaming.. :0
Ill Factor is offline   Reply With Quote
Old 02-06-2006, 09:16 PM   #13392
Tech Regular
 
Join Date: May 2003
Posts: 400
Default

When considering your center of gravity, one thing you have to consider is traction. A higher center of gravity means more weight transfer and more traction (in most cases). This means that a low CG car needs a different roll center in order to transfer weight compared to a car that has a higher CG. A high CG car you would generally run lower roll center or stiffer sway bars etc. What is way more important is the total weight of a car, the weight distribution fore and aft, and the mass of the driveline components.
I recently spent several hours at the roar nats speaking with one of the most influential and successful touring car racers in world, and this topic was brought up. He told told me that just to see how ridiculous the center of gravity issue was taped an extra battery pack (6 cell) to the top of his car and spent an entire day practicing and tuning to see how much difference there was in lap times. In the end of the day, he said that his lap times were only give or take 2 tenths per lap slower, and he attributed it to the extra weight not the CG change. I personally have never tried this, but I figured it was an interesting enough story to pass along.
The whole center of gravity thing is blown way out of proportion and is mostly a marketing ploy (most noticeably the lay down throttle servos in 1/8 buggies-stupid) taking advantage of theory and concept.-Jeff
Jay Dub is offline   Reply With Quote
Old 02-06-2006, 09:19 PM   #13393
Tech Regular
 
Ill Factor's Avatar
 
Join Date: Jan 2002
Location: Cali
Posts: 489
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by Jay Dub
When considering your center of gravity, one thing you have to consider is traction. A higher center of gravity means more weight transfer and more traction (in most cases). This means that a low CG car needs a different roll center in order to transfer weight compared to a car that has a higher CG. A high CG car you would generally run lower roll center or stiffer sway bars etc. What is way more important is the total weight of a car, the weight distribution fore and aft, and the mass of the driveline components.
I recently spent several hours at the roar nats speaking with one of the most influential and successful touring car racers in world, and this topic was brought up. He told told me that just to see how ridiculous the center of gravity issue was taped an extra battery pack (6 cell) to the top of his car and spent an entire day practicing and tuning to see how much difference there was in lap times. In the end of the day, he said that his lap times were only give or take 2 tenths per lap slower, and he attributed it to the extra weight not the CG change. I personally have never tried this, but I figured it was an interesting enough story to pass along.
The whole center of gravity thing is blown way out of proportion and is mostly a marketing ploy (most noticeably the lay down throttle servos in 1/8 buggies-stupid) taking advantage of theory and concept.-Jeff

Great response Jeff.
Ill Factor is offline   Reply With Quote
Old 02-06-2006, 11:06 PM   #13394
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

Ill - The Top deck on the EC is 2mm higher than on the previous Mi2. The top deck on the Mi2EC Foam Spec is the same height as on the older Mi2.

There are a lot of features that are on modern sedans that are there more for fashion reasons than substantial engineering reasons.

Low tops deck are one of them. They do lower the CG (which is good on carpet but bad on asphalt) but they cause other problems. Cars with lower top decks have less torsional stiffness due to the smaller box section so they have to compensate with heavier, thicker upper and lower chassis plates.

Relying on thicker chassis for torsional stiffness makes the interfaces between the chassis plates and the bulkheads more critical. They have to mate solidly or you can have tweak issues. This means bigger (heavier) bulkheads and more screws at the mating surfaces to make the joints solid.

The structural advantages to a higher top deck are many. The performance advantages of a low top deck are few.
__________________
Adrian Martinez
What I run: Schumacher Mi5/Associated RC10R5.1/Associated RC12R5.2/Futaba/HobbyWing/Team EA Motorsports/BSR Racing
Where I run: Florida Indoor R/C Complex/Thunder Racing/Florida On Road State Series
AdrianM is offline   Reply With Quote
Old 02-07-2006, 06:45 AM   #13395
Super Moderator
 
Join Date: Jan 2003
Location: New Jersey
Posts: 8,179
Trader Rating: 17 (100%+)
Default

hmmmm where did I hear that before
__________________
Tekno | JConcepts | RRP | LutzRC | BOOM RC
Bob Barry is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Corner Dots anyone? RCGaryK Electric On-Road 19 07-04-2006 12:12 AM
On the Corner RC-HPI R/C Photography 0 08-02-2005 11:53 PM
Snowbirds Around the Corner scarecrow Florida Racing 20 01-27-2005 11:43 AM
1/12th Corner GT Racer Singapore R/C Racers 26 03-04-2004 07:59 AM
Shumacher Corner in Aus jamesbaxter_81 Australian Racing 6 01-08-2004 03:36 PM



Currently Active Users Viewing This Thread: 2 (1 members and 1 guests)
jaw8850
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 02:28 PM.


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

SEO by vBSEO 3.5.0