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Old 09-16-2008 | 06:25 PM
  #29341  
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Originally Posted by jiml
Can someone tell me what the minimum weight is for 1/12 scale? I thought it was 792 grams but ROAR says 880g (I thought that was a misprint from last year) and IFMAR says 865g.

I suppose a better question is what do all you "experts" think it should be?
jim - its an error: http://www.rctech.net/forum/electric...ml#post4109338

althought i think the IFMAR 865 weight makes more sense for 4c + brushless
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Old 09-16-2008 | 06:30 PM
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Originally Posted by hanulec
jim - its an error: http://www.rctech.net/forum/electric...ml#post4109338

althought i think the IFMAR 865 weight makes more sense for 4c + brushless
So then why was 360 enforcing the 880g spec? That's what Timmay was complaining about.
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Old 09-16-2008 | 06:31 PM
  #29343  
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Originally Posted by hanulec
jim - its an error: http://www.rctech.net/forum/electric...ml#post4109338

althought i think the IFMAR 865 weight makes more sense for 4c + brushless
795 makes sense for BL and LiPo.
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Old 09-16-2008 | 06:35 PM
  #29344  
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Originally Posted by jiml
So then why was 360 enforcing the 880g spec? That's what Timmay was complaining about.
cause the rulebook is wrong. i'll link this post to the 360 rc speedway thread
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Old 09-17-2008 | 07:53 PM
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[QUOTE=flatspunout;4845751]
Originally Posted by chris moore
Hey Rocky, dont get caught up in the technical stuff right off. Allmost every 1/12 car has componets that are more than capable of doing the job, worry about upgrades and nit-picking stuff once you've got the basic driving down. The only things to worry about is ride height(as the inspector said that is imporant) and keeping the tires even(rotated and trued) before each run. Now as to your ? on carpet I have'nt really needed the gurney flap but it is very helpfull on asphalt for anything faster than a 17.5.


Jeez Chris you are everywhere around here! Thanks for the input, I will be running 19T brushed on asphalt so I believe I will install the flaps...are they mounted flat as an extension of the rear of the body or should I leave a "wicker bill" on the trailing edge when I cut them out? I wish I could find a pic of them installed so if anybody has one feel free to post up. Also ride height...what is a good starting point for asphalt and which set of axle eccentrics should I use to get that ride height (12L4)? So many questions!!
Thanks!

-rocky b
On the flap I usually just shoogoo it on using the sm crooked end to attach to the body. I'll try and find a pic to show you what I'm saying. As far as the ride height I like 3.5 to 4mm, but I've run as high as 5mm if the surface is rough or wavy. Cannot say for sure on the eccentrics becaus it'll depend on what ride height you go with and the starting width of the tires. Keep in mind that on asphalt you normally see more tire wear and thus have to change the eccentrics more offten than on carpet to keep the ride height the same. I like my eccentrics from IRS(I think) as thay are in .05mm increments.
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Old 09-17-2008 | 08:07 PM
  #29346  
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Ok could'nt find a pic so this will have to do, no laughing at the artwork
Attached Thumbnails 1/12 forum-flap.jpg  
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Old 09-17-2008 | 09:25 PM
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Smile Stock Brushed vs 17.5 Brushless?

Hey guys, I figured this would be the forum to ask on....I run Stock in a 12L4 with NiMhs. Going to a fairly large race and they are now allowing 17.5 Brushless and LiPo's in this class. I was fairly fast last year with the Stock Brushed motor and the NiMh's but was curious as to how comparable the two would be against each other. Just don't want to get my a## handed to me....

Thanks...
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Old 09-17-2008 | 09:27 PM
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Originally Posted by chris moore
Ok could'nt find a pic so this will have to do, no laughing at the artwork
Laugh??? Why? That's pretty much exactly what my car looks like...right down to the paint job.
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Old 09-17-2008 | 10:23 PM
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Quick question what does everyone use the measure the toe on their 12th scale?
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Old 09-17-2008 | 10:39 PM
  #29350  
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Originally Posted by Ophidian
Quick question what does everyone use the measure the toe on their 12th scale?
eyeball
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Old 09-18-2008 | 12:57 AM
  #29351  
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Originally Posted by FIVE 7
Hey guys, I figured this would be the forum to ask on....I run Stock in a 12L4 with NiMhs. Going to a fairly large race and they are now allowing 17.5 Brushless and LiPo's in this class. I was fairly fast last year with the Stock Brushed motor and the NiMh's but was curious as to how comparable the two would be against each other. Just don't want to get my a## handed to me....

Thanks...
It would depend on what lipo they are allowing. If 7.4v lipos are legal then your car will have so much less horsepower you should be able to win while the other drivers are spinning out

Originally Posted by Ophidian
Quick question what does everyone use the measure the toe on their 12th scale?
12" calipers. measure the back then the front. You have to get used to taking up the slack in the steering equally front to back

Last edited by odpurple; 09-18-2008 at 09:42 AM.
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Old 09-18-2008 | 03:32 AM
  #29352  
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Originally Posted by Ophidian
Quick question what does everyone use the measure the toe on their 12th scale?
Despite being $80... the niftech tool can't be beat.
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Old 09-18-2008 | 04:10 AM
  #29353  
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Originally Posted by chris moore
Ok could'nt find a pic so this will have to do, no laughing at the artwork
You've mounted the flap wrong. It should look like this...
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Old 09-18-2008 | 04:02 PM
  #29354  
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Originally Posted by Der Dicke
You've mounted the flap wrong. It should look like this...
ahhh that's what I was thinking when I mentioned the "wicker bill" earlier...that's what makes it a "Gurney flap" as opposed to an air deflector.

Is it possible to use a 32T pinion with the stock 100T spur on the 12L4? The manual actually recommends a 34T pinion (for stock motors) but I don't see how it will fit...I can't get the motor far enough forward to fit even a 32 without hitting the t-bar and it is maddening! I have been involved in RC since 1987 and have done it all: boats, planes, offroad and onroad, nitro and electric from 1/36 to 1/8 buggy...but this 12L4 is my first 1/12 scale and it is like reading a newspaper in a high wind!! Should I even run the 100T spur at all or chuck it from the start? 19T brushed, asphalt, 160' x 90' layout with one of the 160' sides being all straightaway, Jaco premount tires.

thanks

-rocky b
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Old 09-18-2008 | 04:11 PM
  #29355  
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I would look for an 88 or 96 kimbrough spur if they're easily available near you. You'll have an easier time gearing for brushed motors with those spurs.
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