R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 11-09-2011, 08:44 AM   #1
Tech Apprentice
 
romain_f's Avatar
 
Join Date: Jan 2011
Location: France
Posts: 73
Default New Efra rules

Here are the biggest changes that are coming soon in Europe:
In 1/8th scale
Min weight: 2400 grammes
8mm carburator

In 2013:
16% nitro
5 min qualifying refueling not allowed

1/10th scale
Min weight: 1550 grammes

In 2013:
5 min qualifying refueling not allowed

In Europe, we have noise problems in some areas. So in order to lower the noise, Efra wants to reduces engine's rpm

And for international races, the track will have to be treated.
Tires will have to pass the sniffer ray test.
The sniffer can detect hazardous chemical, but not natural chemicals.

But if the track has a good grip, tire treatment is "useless". At least it is considered like that.

To be continued...
__________________
HB R8/Novarossi

Last edited by romain_f; 11-09-2011 at 10:08 AM.
romain_f is offline   Reply With Quote
Old 11-09-2011, 09:56 AM   #2
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 6,292
Send a message via ICQ to Roelof
Default

Weight limit
As I have staated at the AGM, adding weight is much easier and cheaper than reducing weight. A piece of brass is much cheaper than all kind of Titanium and lightweight aluminium parts and do not forget the wear is much bigger than steel parts like driveshafts. Is it the avarage racer his choice to use those parts and fragile bodies? NO!!!!
Beside that, at this moment the avarage racer do not always have the latest generation car.

Messuring body height
170mm from the gound on a 20mm spacer will give an height of 160mm. If your downstop is set that the wheels can touch the ground you can set the body at the illigal 170mm but legally

5 min qualify w/o refuling
Crazy.... The reason we went to 7min with refuling was that for sure the avarage racer was not damaging his engine by setting it to lean getting the 5 minutes w/o fuelstop. The sugestion of 3:30 minute engines was already stated by then that it could happen and it did.
Now we can go back damaging engines again and now by the rules because there is no choice of a fuelstop.
The funny thing is that the EFRA is hoping that the noise will go down as well but for the finals the 3:30 minute engines can still be used.....

Tire treatment
Although my personal statement is not to allow it I can feel with the compromise. I already had questions from 2 clubs if it would harm the track.....

Regarding the future:
AAC is making more noise... I want numbers on a same designed engine, With the JP R02 (AAC) there was no difference in sound with the R03...
5-port is making less noise... yeah right
A 13mm crankshaft hole max is alowed.... Huh? much bigger than current?
__________________
The quality of an answer comes with the quality of the question.
Roelof is online now   Reply With Quote
Old 11-09-2011, 10:10 AM   #3
Tech Apprentice
 
romain_f's Avatar
 
Join Date: Jan 2011
Location: France
Posts: 73
Default

well then we were both there...
__________________
HB R8/Novarossi
romain_f is offline   Reply With Quote
Old 11-09-2011, 10:14 AM   #4
Tech Elite
 
Bishop's Avatar
 
Join Date: May 2004
Location: Brisbane
Posts: 2,223
Trader Rating: 5 (100%+)
Default

That 10th weight limit seems a little crazy, sure it's right?.

I'd beleive 1650 grams, build up my MTX5 recently and it's very light, not looking forward to getting it up to 1725 gram limit that we have here, but then I also can't quite imagine getting it down to 1550 either, I'd have to loose like 100 grams to do that.
__________________
QRCCRA
www.qrccra.org.au
www.facebook.com/englandparkraceway
www.myrcm.ch/main?pLa=en&hId[1]=org&dId[O]=4331
Bishop is offline   Reply With Quote
Old 11-09-2011, 11:11 AM   #5
Tech Master
 
chicky03's Avatar
 
Join Date: Mar 2002
Posts: 1,993
Trader Rating: 1 (100%+)
Send a message via AIM to chicky03
Default

It reads to me that 2013 is no refueling and 16%. Everyone should be able to make 5 minutes with out damaging their engine with 16%.

Maybe 2012 is still 25% with refueling and 8mm max restrictor?
__________________
Serpent America, Picco, Desoto Racing, Motiv, J Concepts, Nitro Pro fuel, PT RC Racing Oils, TQ Wire(best wire ever!), BSR tires, Arrowmax, Xceed, Sanwa, Amain Hobbies, MIP, Getcustomized, EZ Customs
chicky03 is offline   Reply With Quote
Old 11-09-2011, 12:41 PM   #6
Tech Champion
 
asw7576's Avatar
 
Join Date: Sep 2004
Posts: 5,792
Default

Quote:
Originally Posted by romain_f View Post
Here are the biggest changes that are coming soon in Europe:
In 1/8th scale
Min weight: 2400 grammes
8mm carburator

In 2013:
16% nitro
5 min qualifying refueling not allowed

1/10th scale
Min weight: 1550 grammes

In 2013:
5 min qualifying refueling not allowed

In Europe, we have noise problems in some areas. So in order to lower the noise, Efra wants to reduces engine's rpm

And for international races, the track will have to be treated.
Tires will have to pass the sniffer ray test.
The sniffer can detect hazardous chemical, but not natural chemicals.

But if the track has a good grip, tire treatment is "useless". At least it is considered like that.

To be continued...
I hope America and Asia dont follow those efra rules.

I agree with roelof's opinions though...... especially regarding weight limit and 5 minute qualifying.

Older generation cars will be race unworthy if the weight limit will be set too low.
__________________
On Road : Xray NT1 , RX8 , T4 || Mugen Seiki MRX4-R , MTX4 , MTX3 prospec || Tamiya M03 , M04 || Top Racing Sabre FD2
Off Road : Xray XT8 || Hobao Hyper 8
Radio : Futaba 3PKS || KO propo EX-10 eurus

Last edited by asw7576; 11-09-2011 at 12:52 PM.
asw7576 is offline   Reply With Quote
Old 11-09-2011, 12:48 PM   #7
Tech Apprentice
 
Kosmic RC Fuel's Avatar
 
Join Date: Jan 2011
Posts: 75
Default

16% and 8mm carb. These motors are going to feel like they have no power compared to what we are used to. I do not think the USA will follow, IMO


DJ Apolaro
__________________
www.KosmicRCFuel.com
www.facebook.com/kosmicrcfuel
email: [email protected]
Kosmic RC Fuel is offline   Reply With Quote
Old 11-09-2011, 01:13 PM   #8
Tech Elite
 
Join Date: Sep 2010
Location: Beneath a rock down by the river. Don't have money for van
Posts: 3,185
Trader Rating: 1 (100%+)
Default

About weight on the ten scalers,are you sure it's not for electric TC?Well,it doesn't matter I think we'll never run underweight anymore!They're not making any of us to run that low,but as low as our cars can that's what I understand.
__________________
( ͡ ͜ʖ ͡) https://www.facebook.com/becomeasetupguru/
30Tooth is offline   Reply With Quote
Old 11-09-2011, 01:13 PM   #9
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 6,292
Send a message via ICQ to Roelof
Default

Quote:
Originally Posted by Kosmic RC Fuel View Post
16% and 8mm carb. These motors are going to feel like they have no power compared to what we are used to. I do not think the USA will follow, IMO


DJ Apolaro
These rules are also planned at the IFMAR for the next worlds and they hope all blocks will follow.....
__________________
The quality of an answer comes with the quality of the question.
Roelof is online now   Reply With Quote
Old 11-09-2011, 02:19 PM   #10
Tech Elite
 
JLock's Avatar
 
Join Date: Nov 2001
Location: North Dallas, TX
Posts: 4,455
Trader Rating: 3 (100%+)
Default

The main reason for lowering the weights of 200mm TC is that the new kits fall well below the current minimum weight limit with engine and electronics in them. Even with a full tank of fuel, the cars are still underweight. I guess they figured since they are limiting the percentage of nitro in the fuel, in order to make the cars feel like they are going the same speeds as they currently are, shave a bunch of weight to compensate for the lower power due to the lower nitro content. Just a theory.
__________________
Texas 5
It's not what you know; it's what you can prove.
The only thing that is for sure is that nothing is for sure!!!
The needs of the many outweigh the needs of the few, or the one.
There are 2 things in life that are infinite: the universe and stupidity.
JLock is offline   Reply With Quote
Old 11-09-2011, 02:44 PM   #11
Tech Apprentice
 
romain_f's Avatar
 
Join Date: Jan 2011
Location: France
Posts: 73
Default

Quote:
Originally Posted by JLock View Post
I guess they figured since they are limiting the percentage of nitro in the fuel, in order to make the cars feel like they are going the same speeds as they currently are, shave a bunch of weight to compensate for the lower power due to the lower nitro content. Just a theory.

exact!!

For 1/10 check this out:
__________________
HB R8/Novarossi
romain_f is offline   Reply With Quote
Old 11-09-2011, 02:59 PM   #12
Tech Elite
 
JLock's Avatar
 
Join Date: Nov 2001
Location: North Dallas, TX
Posts: 4,455
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by romain_f View Post
exact!!

For 1/10 check this out:
Wow, that is well under the current weight limits!!! I see that you don't have tires on the car. So, how much more with four uncut tires and then four cut tires (to what you start with in qualifying) add to the weight you currently show?
__________________
Texas 5
It's not what you know; it's what you can prove.
The only thing that is for sure is that nothing is for sure!!!
The needs of the many outweigh the needs of the few, or the one.
There are 2 things in life that are infinite: the universe and stupidity.
JLock is offline   Reply With Quote
Old 11-09-2011, 03:00 PM   #13
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 6,292
Send a message via ICQ to Roelof
Default

No wheels......
__________________
The quality of an answer comes with the quality of the question.
Roelof is online now   Reply With Quote
Old 11-09-2011, 03:43 PM   #14
KMW
Tech Regular
 
KMW's Avatar
 
Join Date: Jun 2002
Posts: 363
Trader Rating: 11 (100%+)
Default

Quote:
Originally Posted by JLock View Post
.... I guess they figured since they are limiting the percentage of nitro in the fuel, in order to make the cars feel like they are going the same speeds as they currently are, shave a bunch of weight to compensate for the lower power due to the lower nitro content. Just a theory.
The nitro percentage for 1/10 didn't change, it's been 16% for some time now. Going from 1700g to 1550g will actually make the cars quite a bit quicker.



Quote:
Originally Posted by Roelof View Post
No wheels......
The wheels are sitting on the body, but there's no foam on them though.
KMW is offline   Reply With Quote
Old 11-09-2011, 04:40 PM   #15
Tech Lord
 
wingracer's Avatar
 
Join Date: Nov 2007
Posts: 12,861
Trader Rating: 24 (100%+)
Default

Quote:
Originally Posted by asw7576 View Post
Older generation cars will be race unworthy if the weight limit will be set too low.
Non-issue. If you are running an MRX-3 or Vector or something, you aren't particularly worried about winning. And if I did really want to, I could get a MRX-3 close to that. Still be a bit overweight but not too much with very few changes.
__________________
Sean. Certified speed crazed mowron.
Team Shepherd USA
www.ashfordhobby.com
wingracer is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
The New Werks B5 .21 Racing Engine Werks Offroad Nitro Engine Forum 9312 11-08-2017 11:45 AM
ROAR new body rules pdmustgt Nitro Off-Road 361 05-24-2011 03:25 PM
New Ener-G 4600 Ni-MH Cell Kropy Electric On-Road 507 09-15-2009 10:53 AM
New EFRA 7min Qualifying Rule Michael_T Nitro On-Road 36 03-01-2009 09:44 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 01:14 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net