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ROAR 1/12 weight limit

ROAR 1/12 weight limit

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Old 12-22-2008, 06:41 AM
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Default ROAR 1/12 weight limit

To the powers that be:

There are conflict stories on what the weight limit will be for the Carpet Nationals. The rule book, and last time I checked the online rules said 880g. But I've heard this is wrong and I've heard different versions of what it should be.

With Brushless so prominent now, there is a reluctancly to go back to brushed but many of us don't want to give up 3 oz to the brushed cars. Most brushless only venues have adopted the 865g limit. Either way I, and many others would like an official call on what to expect at the Nationals so I can either countine brushless or revert back to brushed.
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Old 12-22-2008, 07:20 AM
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I asked Rueben if the 880g is the reoccurring typo and he said it was. We have to assume that 794g is still in play until we hear otherwise. Unless you see a "deviation" on the entry flyer or on the announcement, plan on going skinny.
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Old 12-22-2008, 07:34 AM
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My GenX is 920. I might be able to cut some off to get closer to 880. Can't even get close to 794.
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Old 12-22-2008, 07:46 AM
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I believe this question came up last year, and was corrected in a post but not in the rules. The minimum weight for 1/12 4 cell is 794 grams.

However if you are using a brushless motor you cannot come close to this weight. At the Region 1 carpet race most cars were over 850, with one even over 900!

The ROAR Technical committee will have to look at raising the min weight for 1/12 to accomodate brushless motors, but I think someone has to ask first.
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Old 12-22-2008, 07:46 AM
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794 gm. was for brushed motors, there is "almost" no possible way of getting a 1/12 scale brushless down to that weight!
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Old 12-22-2008, 07:59 AM
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My MS3's run about 825-835g depending on front ends used. I know it's one of the leanest cars around. I have run against many others in the 875 range. You would think that you could see a clear difference. Not sure it's as big of an advantage we think, but I know that I am not willing to give it up!

We're snowed in on the west coast..... gonna be an rctech kinda day.
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Old 12-22-2008, 08:12 AM
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865 is the norm.. Hopefully Roar will go with this also.. :-)



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Old 12-22-2008, 08:40 AM
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Originally Posted by Slapmaster6000 View Post

We're snowed in on the west coast..... gonna be an rctech kinda day.

stop being a wussie, let your inner drifter out..
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Old 12-22-2008, 08:51 AM
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There is a never ending typo on that one dimension.... every year its corrected in the online version of the rule book but never makes it to print.

The book will reflect 795g. Online version is now reflecting 795g.


But.. Blackstock just threw a wierd dimension at me... where is that normal Mike and when has ROAR ever run that? I'll do the research if you just direct the way.
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Old 12-22-2008, 09:10 AM
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865g is the IFMAR rule. http://www.ifmar.org/pdf/ifmar_wc_el...track_2008.pdf
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Old 12-22-2008, 09:12 AM
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865 grams is the IFMAR minimum. This takes into account the heavier brushless motors. ROAR has never run this weight. The 880g weight is for 6 cell 1/12 scale.

And if you think that's weird wait until we start asking for single cell LiPo for 1/12!
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Old 12-22-2008, 09:16 AM
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Originally Posted by Dawn Sanchez View Post
There is a never ending typo on that one dimension.... every year its corrected in the online version of the rule book but never makes it to print.

The book will reflect 795g. Online version is now reflecting 795g.


But.. Blackstock just threw a wierd dimension at me... where is that normal Mike and when has ROAR ever run that? I'll do the research if you just direct the way.
IFMAR uses 865, which is more practical for brushless applications. I'd really like to see 1 cell lipo make its way into 1/'12th scale racing (nudge nudge ). With lipo, the smaller lighter ESC's coming out, and the lighter brushless motors, I think if the weight is changed it should be done with the realization that it's probably going to have to be revisited quickly. That is assuming that ROAR at some point approves 1 cell lipo for racing.
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Old 12-22-2008, 09:32 AM
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Originally Posted by Ike View Post
IFMAR uses 865, which is more practical for brushless applications. I'd really like to see 1 cell lipo make its way into 1/'12th scale racing (nudge nudge ). With lipo, the smaller lighter ESC's coming out, and the lighter brushless motors, I think if the weight is changed it should be done with the realization that it's probably going to have to be revisited quickly. That is assuming that ROAR at some point approves 1 cell lipo for racing.
Single cell lipo is a VERY real happening currently in ROAR. We have requested submission of packs from MFG's to our lab for conditional approvals (so we may gather info to determine specs).... but for 2009, we will allow single cell lipo.... IF THE MFG'S ACTUALLY SEND SOMETHING TO ROAR FOR EVAULATION.
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Old 12-22-2008, 09:47 AM
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Originally Posted by Dawn Sanchez View Post
Single cell lipo is a VERY real happening currently in ROAR. We have requested submission of packs from MFG's to our lab for conditional approvals (so we may gather info to determine specs).... but for 2009, we will allow single cell lipo.... IF THE MFG'S ACTUALLY SEND SOMETHING TO ROAR FOR EVAULATION.
That's great to hear Dawn! From all the testing that has been done thus far it really seems that a 13.5/lipo is very very close to equal to a 17.5/4 cell. You guys need to be careful about pack sizes as well since larger packs than what Danny is doing over at SMC might require messing with parts (mainly the center shock) of the car to get them to fit.
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Old 12-22-2008, 09:59 AM
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Originally Posted by jiml View Post
...The ROAR Technical committee will have to look at raising the min weight for 1/12 to accomodate brushless motors, but I think someone has to ask first.
Originally Posted by BBSpence View Post
Well ROAR, I'm asking! Obviously with the phasing out of 19t and going 13.5 only your heading for brushless only, might as well be consistent with the rest of the brushless world and just make the 1/12 weight 865g brushed or brushless, that should truly level the field for 17.5.
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