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Old 01-03-2013, 10:34 PM   #10981
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Remember to gear your Car taller than the belt counterparts since your drivetrain is freer... 0.4 to 0.5fdr higher. If they run 4.0fdr , you should be 3.6fdr.... If gearing is fixed, then you should shoot for corner speed...
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Old 01-04-2013, 04:25 PM   #10982
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What tire cleaner you use seem to also matter alot in the tc4. Nitroclean works great, while oil based cleaners (wd40) only last a few Minutes before picking up debris and making you spinout....
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Old 01-05-2013, 10:47 PM   #10983
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I'm running a 4.05 fdr on my TC6.1 World's Car. I just bought a used TC4 for my 14 year old son. Should I run a 3.60 or so gear ratio for his car? That would give him more top end and less punch. I plan to dial his top end back using his radio until he sucks less at driving.
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Old 01-05-2013, 11:28 PM   #10984
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You can if you remove the Bearings shields or run teflon Bearings. If not, then go with 4.0fdr , but it will be slower than the tc6.1 at that gearing...
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Old 01-05-2013, 11:56 PM   #10985
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Originally Posted by bertrandsv87 View Post
What tire cleaner you use seem to also matter alot in the tc4. Nitroclean works great, while oil based cleaners (wd40) only last a few Minutes before picking up debris and making you spinout....
I cleaned the bearing with CRC Lectramotive, electrical parts cleaner and degreaser and rinsed with Kleen-flo a greaseless silcone lubricant. I used them because I can creatively acquire it from our parts dept. in the shop. I do have some Nitro spray cleaner and Trinty bearing oil.I only did one large diff bearing The three I didn't do seem to spin just a free as the one I did. What I have found is the wheel bearings are in poor shape and I will replace them all. I can't complain, This car has more miles on it than a 1965 Greyhound bus . What is a decent set of bearings to buy, I will replace them on my TC3 as well. I see them on Ebay anywhere from $10 to $80 for a complete set. As to FDR I have to run 4.2.
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Old 01-06-2013, 12:27 AM   #10986
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Originally Posted by bertrandsv87 View Post
You can if you remove the Bearings shields or run teflon Bearings. If not, then go with 4.0fdr , but it will be slower than the tc6.1 at that gearing...
That's the idea. Currently, he is racing a Losi Mini 8ight on carpet. He's not a very good driver at all. We are working on that. He is 14 years old. He wants to go full throttle all the time. I figure that if he has less punch on the low end, and I dial the top end back on the throttle throw on his Futaba 3PL radio, maybe we can get somewhere.
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Old 01-06-2013, 06:49 PM   #10987
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hey guys, im new too onroad but have been racing offroad for a long time. i was thinking about buying a tc4 club racer for club races of course haha and was wondering if it would do good in a 17.5 tc class ? if i was too buy it i would get threaded shocks and ti turnbuckles and aluminum hexes with all that said would i have a good car too compete in this class and have just a good of a chance at winning a race as the other guys or is this chassis mainly used for vta classes ? any info will be great thanks! ( i am very short on money that is why i was aiming for this chassis)
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Old 01-06-2013, 10:43 PM   #10988
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Actually Kc10chief, going full throttle all the time in the 17.5t is what is necessary to win. Setting up the Car (lowest roll Center possible) to stay on the gas all the time is the real problem though... Also knowing when to slightly coast(chicanes) is the other issue... The tc4 needs Work to get to the tc6.1 level, but it can get there...
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Old 01-06-2013, 10:47 PM   #10989
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Bigbull, that post was for tire treatment only , not bearing cleaning... Also you can't just clean the Bearings, you need to remove the shields too, so they can spin freely...
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Old 01-06-2013, 10:52 PM   #10990
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Rcduder, refer to post #10888 to see what could be done to get you a podium finish..... I would at least recommend getting the arm mounts to lower the roll Center and Rpm ballcups, while removing bearing shields.....
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Old 01-07-2013, 07:36 PM   #10991
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What's a good pinion and spur setup for racing 17.5 blinky on carpet? I currently have a 48 pitch 72 tooth spur in there. How exactly do I figure out the FDR on this car?
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Old 01-07-2013, 07:41 PM   #10992
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You'll need a 60tooth spur gear and from 38teeth to 43teeth pinions , all 48pitch. Don't forget to grind the chassis part that's under the pinion gear...
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Old 01-07-2013, 08:00 PM   #10993
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Quote:
Originally Posted by KC10Chief View Post
What's a good pinion and spur setup for racing 17.5 blinky on carpet? I currently have a 48 pitch 72 tooth spur in there. How exactly do I figure out the FDR on this car?
Here's how (using the gearing recommendation above):

(Spur/Pinion)*DR = FDR

Drivetrain Ratio: 2.5:1
Spur: 60T
Pinion: 38T

(60/38)*2.5 = 3.95

So your FDR would be 3.95:1
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Old 01-07-2013, 09:08 PM   #10994
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Originally Posted by Rodarbal View Post
Here's how (using the gearing recommendation above):

(Spur/Pinion)*DR = FDR

Drivetrain Ratio: 2.5:1
Spur: 60T
Pinion: 38T

(60/38)*2.5 = 3.95

So your FDR would be 3.95:1
Thanks! I love this forum! The drive train ratio was where I was hung up. I couldn't find it anywhere and didn't feel like taking the diff apart and count teeth. Where can I find the info? I didn't see it in the manual. The drivetrain ratio on my TC6.1 is 2:1
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Old 01-07-2013, 09:13 PM   #10995
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TC3/4 is 2.5
TC5/6/6.1/6.1 WC is 2.0
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