Yeah but history shows the ROAR always follows IFMAR and the other blocks eventually. I could see 2s for a beginner class with 21.5 or 25.5 like they have in Japan, but anything else is stupid. It makes no sense that rule makers look to manufacturers for what to make rules about.... Seems like a big conflict of interest. Make a rule and manufactures will build stuff to sell to to racers in that class. Most did it with 1s and the ones that didn't well do bad for them.

I have been told in PMs with different people over the past 2 weeks that it rules may change for next years season. So we get to look forward to even more classes of onroad in North America

21.5 or 25.5 2S would be faster than 17.5 1S... Quite the predicament that ROAR may have put themselves in.

I know it's faster but makes taking up the class a little easier, supposedly. 21.5 2s seems to have saved 12th scale in Japan. When I was there it was the biggest class at the race I was at. I can see the the Logic and can even picture how it was sold to IFMAR, the math is wrong but hey not everyone is an Electrical engineer. Somebody should have been there to do the math for them and show them how wrong they are.

No, not ROAR, IFMAR.

Please do not start speculating or implying anything. ROAR has not made any changes. This was an IFMAR vote, and was 2-1. The ROAR vote was no, especially because if it trickles down to spec classes, the motors would have to be changed. Not a good way to go, without any testing of the concept, especially if all the net result is that we changed motors and batteries just so nobody needs a booster for their radio .

Can someone explain this logic to me? Does anyone truly believe 2s makes 1/12th scale any more accessible or easier to get into?

IFMARs reasoning for doing this is totally bogus. How long have we been reliably running 1s in 1/12th scale now???

2s ESCs are used in just about every 1/10 class. So people that run TC, F1, 4WD buggy, 2WD buggy... could all use the current ESC they have. No more need for ESC manufacturers to have to produce a speed control that is only used for 1/12 and oval. Simplifies things by removing the need to run a receiver pack or booster if you are trying to run a 2s ESC with a 1s battery.

2s 21.5 1/12 has been ran in Japan for a few years now and has worked out well for them.

Once again, you miss the point of my post. I understand ROAR voted no, that's fine. What may not be fine is falling behind the rest of the international RC community by being the only sanctioning body still running 1S for 1/12. If IFMAR wants to go 2S then ROAR should follow suit. THAT is the predicament I was referencing.

This is just my opinion though. Racers will buy what they need, always have always will.

I thinks it's a far stretch to use that as a reason 2s would be more accessible or easier to get into. For someone entering the hobby from nothing (they probably shouldn't be running 1/12th scale anyway) 2s isn't going to save them a dime. For someone that races an off-road class, for example, and owns an ESC that is 2s capable can already use their 2s ESC for literally an extra $5.00!!! Hobbyking makes a decent booster you can buy for $5 that allows your 2s electronics to operate with a 1s battery. The next issue we have with 2s for a fresh face entering the class is unless we go to some new higher-wind motor, even 25.5 is too fast. on 2s that will produce equivalent speeds between 13.5 and 10.5 on 1s. 1s 17.5 is already daunting for many newcomers in 1/12th scale and some tracks are doing 21.5 1s with spec tires to keep speeds reasonable and help draw racers to the class.
In essence, you're going to end up upsetting most (likely all) that already run the class because they are going to be spending bare minimum $75.00 to replace a battery and a motor (that's if they already use a 2s-capable esc and don't mind using used or the least expensive new equipment available) and thy could be spending as much as $300 for premium equipment including a new 2s esc.

So now that you've upset and possibly (likely) lost some participants in the class over the monetary impact of changing more than half the power train in their cars, how many new racers are you REALLY going to pick up because they now don't need to spend $5 - $25 to make their current 2s ESC work with a 1s battery; keeping in mind the fact that their tire budget is likely going to need to be $25 per race day and they will probably need to pick up a tire truer as well, which could set someone back $100 - $500?

I feel like anyone that sees this as a good idea is putting the cart before the horse. You are going to lose more racers over it than you will gain new ones. The reason people don't race 1/12th scale isn't because it's a 1s class or because it's an expensive class to get into. They don't race 1/12th scale because it's fast, uses foam tires and requires precise setup and maintenance to make them work. 2s 1/12th scale is an answer to a question that no one is asking.

#1 you say it's ROAR's problem they have put themselves in, which, since a lot of people seem to skim posts rather than read them, is going to make people think something has changed in the USA, or ROAR was for this.

Staying with 1s makes sense right now, since there has been no proven benefit to changing the complete line up of spec motors to suit a 2s battery. This change has not been tested to my knowledge. If you are a sponsored/high level international 1/12 modified racer, you might have to change. How many of those are in the USA? Currently, to try to help participation in an already ailing 1/12 mod class, they are running 6.5 1/12 at the IIC. To me, this indicates the spec classes are more important in the US. A huge shake up of those classes to benefit the one of the smallest classes in on road would not be wise.

I am asking because I am genuinely puzzled by the constant referrals to 17.5 and 13.5 1s classes being "too fast".

Are American tracks really THAT small?

I ask because my home track is about basketball court size and despite being very low grip at times can handle 10.5 1s OK when the grip is there and I think would handle 13.5 or 17.5 quite easily. Depending on the layout we choose, lap times can be as low as 9sec and as high as 15sec with 21.5T TC

Much smaller than a b ball court.

More like tennis court sized usually:
https://www.youtube.com/watch?v=4iILuS_LvEY

https://www.youtube.com/watch?v=mXnIefV02oo

Most carpet tracks in the U.S. are that small. There are a couple larger tracks but most are in the 10-12m wide by 25-28m long range. Our soon to open new local track is 36' x 80' (11m x 2m -ish).

My "local" track is 96x48.

36x80 is probably normal. 8 second lap times in stock

1) I never said I agree with it, someone just asked why it would make 1/12 more accessible.
2) I never mentioned cost, I just said it simplifies things, and it does. No booster/receiver pack is one less part to put on the car. You aren't going to attract new racers by telling them that they can use this speed control but need to add this or that to make it work. Simplicity is key when trying to attract new people.
3) Since you bring up cost... how often do we all buy a new spec motor anyway? Or new batteries? Most competitive spec racers buy the latest and greatest when it comes out. The cost argument is funny. Finish the season on the stuff we have now, buy new stuff for next season anyway. Just next season it's a 2s battery and a 21.5 or 25.5 or whatever motor, maybe a new speed control.
4) Have you tried a 2s in your car? I have, and I agree that 2s 17.5 is way too fast for spec. The F1 cars run 2s 25.5 and aren't too fast.
5) This is an IFMAR rule. ROAR hasn't changed their rules on this, so for the forseable future we are still on 1s.