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Old 05-20-2008, 02:34 PM   #1021
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Is 25T/55T gear ratio the best I can do for a 23T Hot Bodies S46 motor and Futaba 330CR ESC?
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Old 05-20-2008, 04:47 PM   #1022
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a few pages back, brrrrm made a 52t spur from a F201 (i think) fit the tt01. look back a few pages & all the info should be there...
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Old 05-20-2008, 05:01 PM   #1023
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Running on 25T/55T FDR, I'll get 5.72. So 19T/61T I get higher FDR, I get higher torque but lower top speed?
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Old 05-20-2008, 08:36 PM   #1024
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You are correct sir.

Again, try the car out on the track. The can might just have enough torque to push that final drive safely. But in general, over gearing might have a better top speed, but you might never see that speed due to lack of torque/grip/no area straight enough.

adrictan...are you racing in a club? If so, is it possible for you to make runs with a certain gearing, keep track of lap times and more importantly WRITE DOWN HOW THE CAR DRIVES. The qualitative observations you make, I believe, can be more important than the numbers.

I mean, if the car drives well and feels like it has a good amount of torque coming out of corners, and can still kick up the speed in the straights, that's what you're aiming for. However if you don't remember how a certain gearing compares to the other, you've gotten nowhere fast.

I would stick to the TT-01 gears for now. Once you figure out what you're looking for, if it needs to be taller or shorter gearing, you can look into modifying the chassis and drivetrain to get there.
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Old 05-20-2008, 09:49 PM   #1025
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Thanks. I get the pic. Will order the pinions & Spurs to try out the best combos.
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Old 05-20-2008, 10:22 PM   #1026
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Sweet, man.

let us know how it goes.
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Old 05-20-2008, 10:26 PM   #1027
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No prob. U just have to wait cause am a newbie and not even know the skills yet. Have to master it before recording lap times. Hee.....

Don't know how to insert image. Keep error.

Find my pics here. Don't flame me pls.

http://www.file-upload.net/en/view-8..._0259.JPG.html

http://www.file-upload.net/en/view-8..._0260.JPG.html

http://www.file-upload.net/en/view-8..._0260.JPG.html
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Old 05-21-2008, 04:36 AM   #1028
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Those pics look good! You have a really good setup to start with.

However, it looks like you have toe in in the rear, and toe out in the front. For racing this might hurt your times. I believe toe in in the rear and toe out in the front are good for stabilizing the car at higher speeds, at the expense of extra tire wear and performance.

Toe in in the rear means that the tires are pointing towards the chassis, or "in" and toe out in the front means your tires are pointing "out" away from the chassis. All of these directions are easy to see from the top view of your chassis.

Do you have regular toe rear blocks? Maybe I am just seeing things. Also I see adjustable turnbuckles up front. I would try 0 degrees toe (pointing straight forward)


I am not a racer, but this is something I've sorta picked up from lots of reading. I believe brrrrm described earlier in the thread how he does not use toe due to the slower performance that comes with it. It is slight, but still makes a difference.
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Old 05-21-2008, 08:12 AM   #1029
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I was told to be better during the drift, adjusting the camber for the front is more impt thus my front tires are this way. Rear tires are needed for stability so 0 camber.
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Old 05-21-2008, 02:11 PM   #1030
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im running with my wheels cambered in so that they fit under the bodyshell because im running offset rims. if your rockin' plastic pipe tyres (ABS/PE/etc.) then camber really dont matter. But the other tyres may require other techniques. i have never used anything else but PE tyres, wouldnt mind giving abs a go...
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Old 05-21-2008, 02:14 PM   #1031
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Quote:
Originally Posted by vinsedprince View Post
if you check the chart.. and the motor mount... 25 / 55 is the max...
yeah, put in a 22T pinion and it should not be able to touch the spur...

28/55 is the max, not 22 / 55
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Old 05-21-2008, 05:34 PM   #1032
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28/55 for higher top speed but lesser torque than the rest right?
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Old 05-21-2008, 05:40 PM   #1033
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You can go as far as 31x52 (FDR 4.36). See attached picture (courtesy of RaceBucks). With a CF chassis you can go as far as 40x60 (FDR 3.9). See post #835 and earlier for more info.
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TT-01 Forum-pinions.jpg  
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Old 05-21-2008, 05:41 PM   #1034
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You are right

Quote:
Originally Posted by adrictan View Post
28/55 for higher top speed but lesser torque than the rest right?
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Old 05-21-2008, 05:47 PM   #1035
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Tamiya only has up to 25T Pinion and according to the chart, the HPIs are untested. Afraid it'll damage my car....
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