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Old 06-25-2008, 09:01 PM   #361
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Originally Posted by Bubonic-X View Post
OK if I put my car on the track to practice with whatever size tires were on there and make sure its fast enough by OBSERVING other cars and adjusting my gearing as I had previously stated and I beat you in the main I think I proved my point. .... And I will further illustrate Mr Geek squad go get your laptop and go calculate your rollouts..Meanwhile I will be racing and having fun rather then crunching numbers thinking you will get that so called magic gear ratio with so called magic edge. LOL!
Dont make fun of my 5th grade edumacation Im hurt and devastated!!!
Thank you drive thru!!!!!
I love getting you guys going ballistic over the stupidest things its so easy....Thats what makes this country so great remember that

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Laughing all the way to the hobby shop and the finish line...BOO YA!!!!!!
You can try and maybe get lucky... and you can also turn your $85+ motor and $150+ speed controller into a charred mess, your choice. All it takes is a pair of $15 plastic calipers and a chart that was already offered to you along with about 1 minute max. No computer required. There is no one at our track that takes a computer to the track for the purpose of calculating anything.

btw, good luck. From the sounds of it, you will need it.
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Old 06-25-2008, 09:11 PM   #362
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Is there a website teaching how to compute roll out?
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Old 06-25-2008, 09:20 PM   #363
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Is there a website teaching how to compute roll out?
You can use this following link to a gear ratio program to plug in numbers or ask/PM one of the guys that commented of using a spreadsheet to e-mail it to you.

http://www.rcracing.com/Gear_Ratio_Program_1100.cfm

I have used the rollout method combined with motor temping to reach my goal.
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Old 06-25-2008, 09:25 PM   #364
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excel spreadsheet
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File Type: zip rollout.zip (3.0 KB, 135 views)
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Old 06-25-2008, 09:32 PM   #365
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Originally Posted by David Galdo View Post
You can use this following link to a gear ratio program to plug in numbers or ask/PM one of the guys that commented of using a spreadsheet to e-mail it to you.

http://www.rcracing.com/Gear_Ratio_Program_1100.cfm

I have used the rollout method combined with motor temping to reach my goal.
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excel spreadsheet
Thank you sir! I'll try to figure how it applies Thanks again!
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Old 06-26-2008, 12:37 AM   #366
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Its well established that there are numerous ways to calculate roll out. For me those PDF files and spread sheets are never where I want them so here's my method. I have a cheapo calculator in my box with the formula "Dx3.14xP/S" written in sharpie across the front. D=tire diameter, 3.14 is Pi, P=pinion and S=spur. tire dia x Pi x pinion teeth divided by spur teeth=roll-out

You can spend all day chasing the right gear ratio as your tires wear or you can just figure it out in this simple manner.

If you are math challenged then just run rubber tire touring car with the masses
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Old 06-26-2008, 02:42 AM   #367
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I love getting you guys going ballistic over the stupidest things its so easy....Thats what makes this country so great remember that
You're right, we do go ballistic, especially when things really are that stupid.

And, as someone who doesn't live in your country, I'm not convinced you have the last bit right, either...
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Old 06-26-2008, 04:59 AM   #368
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Originally Posted by theisgroup View Post
excel spreadsheet
Doyou have the metric version?! lol
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Old 06-26-2008, 05:01 AM   #369
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This is one of the best explainations I've seen of roll-out yet.
1/12 forum
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Old 06-26-2008, 05:15 AM   #370
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OK I understand how to do the math on roll out but, how do I know what roll out I need? I.E I have worked out my roll out to be 38.24. Where should I aim to be?(in the 40's?) does it depend on the size of the track and how tight it is. I have been told that I should always try to achieve 1-1.

Last edited by dirtdustingdavo; 06-26-2008 at 06:07 AM.
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Old 06-26-2008, 05:40 AM   #371
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Doyou have the metric version?! lol
here is the metric version. hehehehe
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File Type: zip rollout.zip (3.0 KB, 83 views)
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Old 06-26-2008, 11:50 AM   #372
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Originally Posted by dirtdustingdavo View Post
OK I understand how to do the math on roll out but, how do I know what roll out I need? I.E I have worked out my roll out to be 38.24. Where should I aim to be?(in the 40's?) does it depend on the size of the track and how tight it is. I have been told that I should always try to achieve 1-1.
please post what motor you are running and the size/type of track
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Old 06-26-2008, 02:06 PM   #373
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I'd like to know a roll out on a medium size, technical carpet track.
I will run either a 5.5 or a 4.5 Novak motor with 4 cell.


2nd. question:
Are there any other ride height adjusters available besides the one that are
included in the kit? number?
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Old 06-26-2008, 02:23 PM   #374
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Originally Posted by nutsisneat View Post
2nd. question:
Are there any other ride height adjusters available besides the one that are
included in the kit? number?
You can get the IRS ride height adjusters for the rear which allow you to adjust in 0.5mm increments.
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Old 06-26-2008, 06:11 PM   #375
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for you guys that have this car, how's it working out for you? i'm looking at a rc10r5 and i'm sure it's going to run very similar to these cars.
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