uberdub
02-28-2006, 10:48 AM
Quick question, I run on a carpet track that has a 180 ft. runline. What do I want my rollout to be? Thanks!
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View Full Version : Roll Out Chart uberdub 02-28-2006, 10:48 AM Quick question, I run on a carpet track that has a 180 ft. runline. What do I want my rollout to be? Thanks! latemodel100 02-28-2006, 05:05 PM Hey dude, start somewhere around 2.10-2.20 and try from there. On Sunday I ran 2.22 and barely finished the race (overgeared)............. uberdub 02-28-2006, 05:15 PM Thanks man. Right now, I'm running a 81/22 which is giving me a rollout of 2.13-ish (with the balloon-ish JACO's). Since I've gone down in tire size (what size are they? 2.15? I'll check when I get home), I'll need to increase my gearing correct? What about my motor, will it run hotter or the same? I'm wanting to switch to 64 pitch... jajnmj 02-28-2006, 07:05 PM !!!!!!!!!!!!!!! satrnfreak 03-01-2006, 01:29 PM What does everyone use to determine rollout?? I have been trying and still cannot figure it out. Are there programs out there to help with this, standards for Monsters ans such? Im at a loss.... i have been running a roll-out that i thought was good, and now it seems that everyone is telling me i am overgeared..... PLZ HELP!!!!!!! FreAk mcRacing 03-01-2006, 02:07 PM if you know what roll out you need www.ycityhobby.com has a roll out chart but it only help you find what pin. or the roll out you need to be at but for you track size you need to know what roll out you want to find Jim Smith 03-01-2006, 10:01 PM This should help you figure what rollout, it calculates the average motor rpm and associated rollout... It can be found at http://jimsmith.iwarp.com/RCDownLoads.html HTH http://photos.hobbytalk.com/data/510/medium/Vehicle_Speed_Related_to_Motor_RPM.JPG highroller 03-02-2006, 08:50 AM Keep getting message unable to find file information when clicking on any of the files. latemodel100 03-02-2006, 01:52 PM I downloaded them last night and they are great tools............ Jim Smith 03-02-2006, 09:46 PM Humm, I just clicked on all of them without issue ? Which would you like, I'll email them to ya cwinters 03-02-2006, 11:04 PM There is also a neat looking program by Hank here: http://www.hobbytalk.com/bbs1/showthread.php?p=1332632#post1332632 In the spirit of Hank's program, I made a palm version which will allow a person to calculate the theoretical rollout as well as the number of laps with a given rollout. http://home.comcast.net/~cwinters15/rc/palm_software.html Chuck Jim Smith 03-02-2006, 11:15 PM Chuckie baby, "Number of laps with a given rollout", using an average motor rpm ? cwinters 03-02-2006, 11:27 PM Jim, yeah, should get you in the ballpark, no? Chuck highroller 03-03-2006, 02:11 AM I've gotten the message from both of my computers MSN download manager keeps displaying message unable to find file information to download. I was able to download the one mcracing posted. Jim I've sent a PM of the files I'd like. Thanks, what format are they in. Jim Smith 03-03-2006, 11:19 AM Highroller, No problem. I do need an email since the hobbytalk mail screen does not do attachments :) They are currently in Excel 95/97 format. If you need them to drop back further in versions just ask. :) Email please :) Jim Smith 03-03-2006, 11:21 AM Chuckie baby, Yeah that will get you in the ballpark, kind of why I put the xls in post #7 here together. Figure out where your motor is best and gear around that... highroller 03-03-2006, 11:24 AM Thanks Jim the version should be okay email colesha@verizon.net Jim Smith 03-03-2006, 12:11 PM HR, you got mail thirdplace 03-03-2006, 12:34 PM Can any one just give me a formula? for roll-out latemodel100 03-03-2006, 12:45 PM (Tire Size (dia)* Pi) / Gear Ratio = Rolllout cwinters 03-05-2006, 08:19 PM Jimbo, I guess either way you have to know how well your motor runs at some average RPM. BTW, I looked at your xls. Looks pretty cool. Chuck vBulletin® v3.8.7, Copyright ©2000-2012, vBulletin Solutions, Inc.
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