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Old 11-28-2004, 06:31 PM   #1801
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Default Re: adjustable roll center?

Quote:
Originally posted by rcdave905
I have been driving sedans for a while now, and have one of those stupid questions.
What does everybody mean about the TC4 having adjustable roll centers?

Please explain it to me.

Thanks in advance
Read the back of the book, its in there.


Does anyone know what setup they were running in Cleveland?
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Old 11-28-2004, 08:59 PM   #1802
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Default carpet setup

could someone please post a carpet setup for the tc4..foam jacos plaid and purples..
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Old 11-28-2004, 09:37 PM   #1803
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Default Carpet Starting Point

Without too much variation from the stock setup, I changed only the spring, pistons, oil, shock mounting location, caster and added front swaybar for a carpet race. The car was awesome! Good rotation and corner speed but stable and easy to drive.

Camber locations/washers: stock (from instructions)
Battery: front
Body: Mazda with wing forward
Tires: rear purple, front plaid (Murdock RC tires)

Front:

Purple spring, #3, 60W, upper mount: hole 2 (2nd from inside), lower mount: inner hole, droop 4, black TC4 swaybar, ride height 5mm, .5 degree toe-out, 4 degrees of caster.

Rear:

Red spring, #3, 40W, upper mount: hole 3 (3rd from inside), lower mount: outer hole, droop 6, ride height 5mm, 3 degree toe-in.

After the other team guys get back from Cleveland we can compare and tweak further. Good luck!
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Last edited by Lebatek; 11-29-2004 at 09:16 AM.
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Old 11-28-2004, 10:39 PM   #1804
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if any of you guys get the bmi chassis please post on how it goes. thanks.
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Old 11-29-2004, 07:23 AM   #1805
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Default Carpet Starting Point

For those who asked, it was used on a small, tight, indoor track with relatively new Ozite.

I ran out of time to try other things, but quite frankly the car was doing nothing wrong on this particular track.

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Old 11-29-2004, 12:31 PM   #1806
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tc3Guru, I believe BMI is still working on a prototype chassis for the TC4. Some extra stuff needs to be on the chassis, compared to the TC3 one, to take care of the camber rod mounting, as it is not part of the shock tower like on the TC3. I am looking forward to seeing BMI's setup too, as even with the graphite parts, I feel the TC4 has too much torsional flex in the chassis.
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Old 11-29-2004, 12:57 PM   #1807
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Here's what I'm using on a tight ozite track. Car is really easy to drive. Need to work on it a bit more to get it even better.

http://www.rcohio.com/rcohio/html/mo...download&cid=1

Blake
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Old 11-29-2004, 01:54 PM   #1808
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Who has the full graphite component sets in stock?
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Old 11-29-2004, 04:33 PM   #1809
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Hi guys, just wanted to let you know that we received a shipment of some more TC4 parts in today, including all the Aluminum Arm Mounts, and we are also running a special for R/C Tech members where you get a whopping 200 free All-Star Points if you place an order today! For more info please see our post here:

http://rctech.net/forum/showthread.p...threadid=55668

Thanks everyone for your time!
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Old 11-29-2004, 05:17 PM   #1810
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Quote:
Originally posted by Stealth_RT
Who has the full graphite component sets in stock?
rcboyz on ebay does i do believe.
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Old 11-29-2004, 07:08 PM   #1811
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Quote:
Originally posted by dr_hfuhuhurr
Here's what I'm using on a tight ozite track. Car is really easy to drive. Need to work on it a bit more to get it even better.

http://www.rcohio.com/rcohio/html/mo...download&cid=1

Blake
Blake,
I've been running close to the same set up and it is dialed in. I'm going to move the front lower shock mounts in to stop the wheels from hitting them. Have you had trouble with excessive front tire wear?
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Old 11-29-2004, 08:02 PM   #1812
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If you move the link to the inside hole on the steering knuckle your wheels won't hit the shock bottom. I haven't run it like that so I'm not sure how its going to handle.

Why is everyone running the #3 pistion with thinner oil? Just curious.
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Old 11-29-2004, 08:02 PM   #1813
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I don't have much time on the car yet. I didn't notice anything abnormal in the 1.5 race days I have on the car no.

I'll be practicing tomorrow night then a club race Wed. evening. I'll post if I change anything on that setup.

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Old 11-29-2004, 08:08 PM   #1814
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SoCal raceway has a lot of carbon fiber parts including the chassis.
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Old 11-29-2004, 08:27 PM   #1815
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Chris,

My car is all carbon fiber -- chassis, arms, towers, everything.
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