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Old 05-22-2009, 11:45 PM   #5536
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Default Pinion gear size need help

I m using Ezrun 9T motor 4300KV.

What is the best size of pinion gear that i should use pls??

Is 32t pinion good enuff?
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Old 05-23-2009, 11:36 AM   #5537
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I m using Ezrun 9T motor 4300KV.

What is the best size of pinion gear that i should use pls??

Is 32t pinion good enuff?
I posted the same info on page 366 post #5486
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Old 05-23-2009, 01:32 PM   #5538
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Look fellas.. All you need to do is run a few calculations.
First of all it's important to know the size and type of track you are running on. you need to know the terminal velocity you want for the straight. Use miles or kilometers , it only changes the figures you use in calculating.
Measure the diameter of your tires and multiply it by 3.14 (pi).... right it down.
Calculate your roll out.
Miles per hour needs to be broken down to smaller increments like feet per second. One MPH is 88 feet per minute.
If you motor makes 4000 k/v then multiply by the nominal voltage of your battery.. li-po is 7.4v that would be 29,600 rpm's.
multiply that by the roll out and divide by 88.
Or just take the roll out and the max rpm and divide by 88 for mph.
Its easier than it looks.
Distance is Rate times Time
hence MPH.... simple
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Old 05-23-2009, 03:04 PM   #5539
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Just found out the NT1 gear diff has 41 teeth, not sure how people were fitting that into the car as RC Market said???
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Old 05-24-2009, 07:34 PM   #5540
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Well guys, I had a great weekend of racing with the 416 coming away with the Superstock (10.5) title at the MuchMore Masters event. It helped that it was held at my home track, but Iíll take the win nonetheless. I had the fastest car all weekend but didnít put it to good use in qualifying ending up 3rd on the grid, but was solid in the finals with a 2nd, 1st, and 3rd. Iíve attached my setup which is basically the same as the base asphalt setup but with unique shock setup. All weekend everyone was saying how good my car was, I had comments like it has the perfect amount of steering, not too much grip, carries awesome corner speed, is the quickest in transitions, etc, etc. For anyone running med grip asphalt the setup is weapon fast.

I also got to test a couple things over the weekend. I tested the Speed 6 and LTC-R back to back & they were similar on pace, but the Speed 6ís greater stability made the car understeer & caused bad wear on the front tyres. I could have changed my setup to compensate but I stuck the LTC-R on and the steering came back so stuck with that all weekend. I also ran my fastest ever lap at the track using an LRP motor (I always thought novaks were the gun), and I was running alloy knuckles and rear uprights so there might not be much truth to the ďplastic goes fasterĒ mentality. Maybe I would have been even faster with plastic parts and a novak motor but hey it was enough on the day
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Old 05-25-2009, 08:23 AM   #5541
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Congrats on your win Craig!
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Old 05-25-2009, 08:58 AM   #5542
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congrats on the win

got a Question boys

i was testing ready for the Euro's at Apeldoorn NL on sunday , a couple of the local boys had less spacers in the steeing (more ackerman i think)

what will this make the car do ??

got lots of steering but not a lot of rear grip

set up as per Jilles asphalt but 1.5 camber all round (rear tyres wern't wearing on the outside with 2 )



hope you can help

cheeRS phil

Last edited by sidecarphil1; 05-25-2009 at 02:39 PM.
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Old 05-25-2009, 03:42 PM   #5543
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More ackerman will give you more steering on corner exit. Try run d/d at the front, I'd also go softer on the oil and harder on springs - go hpi's if you have them
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Old 05-25-2009, 04:14 PM   #5544
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Quote:
Originally Posted by CraigM View Post
More ackerman will give you more steering on corner exit. Try run d/d at the front, I'd also go softer on the oil and harder on springs - go hpi's if you have them

Congrat to you...
question about your set up...why HPI shock spring?? why not Tamiya?
what HPI LBS spring will would be in Tamiya spring chart?
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Old 05-25-2009, 05:05 PM   #5545
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What is the latest Rubber tires set up in GT1 or GT2 everyone is using in TCS?
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Old 05-25-2009, 06:00 PM   #5546
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What is the latest Rubber tires set up in GT1 or GT2 everyone is using in TCS?
Really depends on the surface you race on & the conditions. The Type A & B3 are really the best tires available for TCS racing(the Type A's are the softer of the two), but the B3 is meant more for high temperatures than the A's are(the box that B3's come in explain the temp range for both B3's & A's), but certain times, like on a slick surface, you'll wanna use Type A's anyway. That's what I had to do at the Omaha TCS, I would've liked to run B3's on both of my cars(I ran GT3 with silver can motors & my 416WE in GT1 with a 13.5 brushless), & while I could get by with B3's in the GT3 car, I just couldn't put the power down with them on my 416, so I had to use the A's on it all weekend(& had to make a setup compromise or two to get the car controllable, like going to 3.5 degrees of rear toe in, definitely added some drag, but it was neccessary). On my home track though(where we have a bit more of a groove in the carpet), B3's work just fine, & outside on asphalt(especially now that the heat will make for track temps near or above 100 degrees), B3's are just about the only tire that will hold up for 5 minutes. So it really depends on what your situation is as to which tire is best.....
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Old 05-25-2009, 07:19 PM   #5547
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Quote:
Originally Posted by CraigM View Post
More ackerman will give you more steering on corner exit. Try run d/d at the front, I'd also go softer on the oil and harder on springs - go hpi's if you have them
My experience with Ackerman was more of it gave me more mid-corner and less sensitivity while going straight. A lot depends on weather you are running a spool , diff or a one way. I do not agree with you more exit statement. The measurement is with the wheels fully locked one way or the other and is the difference in angle of the two is Ackerman. A bigger difference is best used on tight tracks and less on more open swoopier tracks.
Using lots of it on loose or low grip tracks would be treacherous. Not having enough on a tight track would make you wait for the car to rotate mid-corner when the steering is at full deflection.... that is if you get that far.
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Old 05-25-2009, 07:31 PM   #5548
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Originally Posted by Goingfast View Post
Congrat to you...
question about your set up...why HPI shock spring?? why not Tamiya?
what HPI LBS spring will would be in Tamiya spring chart?
I seem to answer this question a lot, I should really save the part numbers The HPI springs you want are the pro-linear silver and blue, silver is the harder of the two but they are each rated between Tamiya white and blue. As the name suggests, they are linear in their compression, while the tamiyas are progressive (start softer and get harder the more they compress). On asphalt, the HPI's make the car more predictable in the transition from grip to slip, which makes the car faster overall and easier to drive on the limit
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Old 05-25-2009, 07:36 PM   #5549
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Quote:
Originally Posted by Grizzbob View Post
Really depends on the surface you race on & the conditions. The Type A & B3 are really the best tires available for TCS racing(the Type A's are the softer of the two), but the B3 is meant more for high temperatures than the A's are(the box that B3's come in explain the temp range for both B3's & A's), but certain times, like on a slick surface, you'll wanna use Type A's anyway. That's what I had to do at the Omaha TCS, I would've liked to run B3's on both of my cars(I ran GT3 with silver can motors & my 416WE in GT1 with a 13.5 brushless), & while I could get by with B3's in the GT3 car, I just couldn't put the power down with them on my 416, so I had to use the A's on it all weekend(& had to make a setup compromise or two to get the car controllable, like going to 3.5 degrees of rear toe in, definitely added some drag, but it was neccessary). On my home track though(where we have a bit more of a groove in the carpet), B3's work just fine, & outside on asphalt(especially now that the heat will make for track temps near or above 100 degrees), B3's are just about the only tire that will hold up for 5 minutes. So it really depends on what your situation is as to which tire is best.....
What happen to the B2 tire? Thank for your input...
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Old 05-25-2009, 07:38 PM   #5550
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Quote:
Originally Posted by CraigM View Post
I seem to answer this question a lot, I should really save the part numbers The HPI springs you want are the pro-linear silver and blue, silver is the harder of the two but they are each rated between Tamiya white and blue. As the name suggests, they are linear in their compression, while the tamiyas are progressive (start softer and get harder the more they compress). On asphalt, the HPI's make the car more predictable in the transition from grip to slip, which makes the car faster overall and easier to drive on the limit
Thanks
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