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Old 01-24-2014, 11:20 AM   #6001
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Originally Posted by Brady_21x View Post
"stirring the pot" what's the status on the Tekin RS gen2 Spec esc? Going to be approved or not..... I'm not liking my hobbywing justock, seems like a lack of power compared to my gtb2 I had...
stirring the pot got me in trouble last time LOL
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Old 01-24-2014, 12:40 PM   #6002
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I agree. Running too tight a diff on the front of the VTA car just scrubs away horsepower in the turns. I usually make up a bunch of time in sweepers versus a car with a spool.

The TC has enough power to spin up the inside front coming out of a tight corner, so it can make use of a tighter front diff.
Most cars don't have their ackermann adjusted properly to use a spool to its potential. 17.5 and mod TCs have enough power to get around it but are still being less efficient. Too much ackermann, which puts too large a slip angle into the inside tire coupled with a driving the inside wheel the same speed as the outside, and you'll get a large negative longitudinal force reaction.
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Old 01-24-2014, 01:13 PM   #6003
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What would be a good weight to start off trying in a gear diff?
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Old 01-24-2014, 01:16 PM   #6004
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What would be a good weight to start off trying in a gear diff?
Start off with 55 wt (725 cst ) oil. If you get too much steering (or you traction roll) then go with higher weight oil.
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Old 01-24-2014, 01:22 PM   #6005
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Start off with 55 wt (725 cst ) oil. If you get too much steering (or you traction roll) then go with higher weight oil.
That's all? I was thinking upwards of 250-500,000wt.
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Old 01-24-2014, 01:32 PM   #6006
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What would be a good weight to start off trying in a gear diff?
Start off with 55 wt (725 cst ) oil. If you get too much steering (or you traction roll) then go with higher weight oil.
That's all? I was thinking upwards of 250-500,000wt.
Are you talking about a gear diff in the front? If so then you would want to put 1 Million cst (or 2.5 Million cst) in the front gear diff. Check out this web page for those heavy silicon oils --> http://www.teamgravityrc.com/store1/...=0&sort=normal
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Old 01-24-2014, 01:50 PM   #6007
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What would be a good weight to start off trying in a gear diff?
That depends in part on your driving style (and the brand of diff, of course). I use oil that is just thick enough to give some stability under trail braking. On my car that is about 10,000 in the front (filled full). The rear is a ball diff.
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Last edited by howardcano; 01-24-2014 at 03:08 PM. Reason: Added "filled full".
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Old 01-24-2014, 02:07 PM   #6008
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Yes the front diff, I run 2000 in the rear.
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Old 01-24-2014, 03:03 PM   #6009
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i liked 100,000 in the front diff it's gave enough not to bind in the corners and had great steering. for 25.5 I don't think you need much more.
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Old 01-24-2014, 05:29 PM   #6010
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I tried a gear diff in my winning tc6.2 vta up front and ran 100,000 AE . Ive never used one up front before but it worked great in my USVTA ride. I run 40 AE in the rear
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Old 01-25-2014, 08:45 AM   #6011
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Originally Posted by Brady_21x View Post
"stirring the pot" what's the status on the Tekin RS gen2 Spec esc? Going to be approved or not..... I'm not liking my hobbywing justock, seems like a lack of power compared to my gtb2 I had...
Me too! any word? Want to get anotner ESC for another class, but if the Gen2 is approved for Trans AM, I'd get it and just switch between the two cars.

Perhaps a better question, who should be be asking about this?
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Old 01-25-2014, 08:56 AM   #6012
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Looking good so far
Eric Robk, mailed today...
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Old 01-25-2014, 09:17 AM   #6013
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Me too! any word? Want to get anotner ESC for another class, but if the Gen2 is approved for Trans AM, I'd get it and just switch between the two cars.

Perhaps a better question, who should be be asking about this?
I would also like to know. I used the gen 2 stock spec in vegas for the spec gt class, it worked great. I would love to be able to use it for VTA.
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Old 01-25-2014, 09:32 AM   #6014
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I really like reading RCTech, but man I get tired of the pop up advertising. Ya, I really DO want to look like this guy...LOL.

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Old 01-25-2014, 12:12 PM   #6015
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I changed my browser to Firefox and installed the ******* Plus add-in (free). This eliminated most of the annoying pop-ups/ads on website and allowed my older/underpowered Windows 7 laptop to browse much better.

I understand sites like this need to generate revenue to exist, but do it in such a way that it isn't an annoyance. More in this case certainly isn't better.

----------

If the Tekin does ever get approved, I sincerely hope there isn't any way to mess with the firmware (in other words...cheat).
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