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-   -   SC10 Thread (https://www.rctech.net/forum/electric-off-road/286773-sc10-thread.html)

brent701 01-09-2012 10:09 PM


Originally Posted by CraigMBA (Post 10148369)
There is a tall tower, a medium tower, and a short tower, right? All of them give the car a different roll center. Lowering the tower lowers the roll center, raising it raises it. The opposite thing happens in the inside camber link stud, adding shims lowers the roll center, taking them away raises it.

Raising the roll center makes the chassis roll in the corner a little easier, lowering it keeps the chassis flatter. You can read up on it a little more here:

http://en.wikipedia.org/wiki/Roll_center

But to answer your original question, the factory guys always run the shortest tower, and if they don't, they cite it on the setup sheets. The only time I ever saw a taller one cited was on a 4wd.


thanks for the info. that cleared up a few things. but I wasn't the one asking the question.. well that I remember. lol

frankiebonez 01-09-2012 10:36 PM

So I have a question, how do I make this thing turn even sharper in the turns?

It seems maybe I just have to slow down more but I see other guys blazing through turns at my local track faster than me with no problems.

Can some people give me some tips? Should I set the suspension nosed over? I was going to add some weight to the front hoping that would help... I have good tires on the car, setup the suspension with 35/30 weight oil and blue rear/grey front springs. Overall it DOES turn well but I feel that there is something I'm missing...

Any ideas? If you need some more input from my end just ask.

aSab 01-10-2012 12:18 AM


Originally Posted by frankiebonez (Post 10148727)
So I have a question, how do I make this thing turn even sharper in the turns?

It seems maybe I just have to slow down more but I see other guys blazing through turns at my local track faster than me with no problems.

Can some people give me some tips? Should I set the suspension nosed over? I was going to add some weight to the front hoping that would help... I have good tires on the car, setup the suspension with 35/30 weight oil and blue rear/grey front springs. Overall it DOES turn well but I feel that there is something I'm missing...

Any ideas? If you need some more input from my end just ask.

turn faster in 180šs or in fast paced turns, chicanes? are they faster than you going in or coming out? is the truck loose/pushing in or out of the corner?

kc_nitro_rc 01-10-2012 06:16 AM


Originally Posted by frankiebonez (Post 10148727)
So I have a question, how do I make this thing turn even sharper in the turns?

It seems maybe I just have to slow down more but I see other guys blazing through turns at my local track faster than me with no problems.

Can some people give me some tips? Should I set the suspension nosed over? I was going to add some weight to the front hoping that would help... I have good tires on the car, setup the suspension with 35/30 weight oil and blue rear/grey front springs. Overall it DOES turn well but I feel that there is something I'm missing...

Any ideas? If you need some more input from my end just ask.

Ask the guys that are blazing thru the turns if they will take a few laps with your truck. First thing is to determine if it is the driver or truck. They would be the best ones to give you suggestions.

Asharus 01-10-2012 08:23 AM

are you running the same tires as them? if not, that's the first thing i'd change.

CraigMBA 01-10-2012 08:43 AM


Originally Posted by kc_nitro_rc (Post 10149662)
Ask the guys that are blazing thru the turns if they will take a few laps with your truck. First thing is to determine if it is the driver or truck. They would be the best ones to give you suggestions.

I often take laps in other peoples rigs/hand my transmitter to other people to see what happens when they drive it.

About 15 years ago I was at a track watching and a friend of mine gave me his transmitter and asked me to take a couple of laps. I got about two turns into it and exclaimed "OMG this thing pushes bad!" and he snatched the transmitter back with a "OK THANKS!" I asked him what the heck that was for, and he said he wasn't sure it pushed, but knew I'd go drive the car hard.

brent701 01-10-2012 08:54 AM


Originally Posted by CraigMBA (Post 10150218)
I often take laps in other peoples rigs/hand my transmitter to other people to see what happens when they drive it.
.

I do the same thing.
Had Tommy Hinz drive my Buggy a few times, than adjusted and re drove. Huge difference.

OnlyVees 01-10-2012 02:20 PM

I've seen some of the factory guys running dog bones over CVD's at certain tracks...

Can someone please explain when one is better than the other?

Rich Panganiban 01-10-2012 02:45 PM


Originally Posted by OnlyVees (Post 10151636)
I've seen some of the factory guys running dog bones over CVD's at certain tracks...

Can someone please explain when one is better than the other?

Here is a post from Chad Bradley, he was referring to the Mugen MBX-6 but it's applicable to all cars:



Originally Posted by chad bradley (Post 10127255)
Rear Axles are a big deal in regards to rear traction, mainly how they bind or cause friction in thier joints.

More bind more traction (sometimes worse in the bumps however)
Rear axle angles, axle plunge in the outdrives, wear, style of axle (CVD,Universals, dogbones) bind differently. Worn out outdrives will bind more, however replace outdrives asap if they get a groove where the pin makes contact. Axle pin size plays a part too (smaller axle pin is more bind, faster wear)

Axles that sweep forward will have more bind than if the axle were to be inline with the out drives. Alot of cars now are desighned with axles that sweep forward.

Axle plunge in the outdrive (the movement of the ball and pin in the outdrive). Moving the rear hub up and down with the two hingepin holes changes axle plunge (generally the higher the axle is on the outside of the car will have less plunge). Rear roll center, camber link positions, diff hight all play a part. When I raced a lot of 1/10 gas truck we would raise the whole diff case off the chassis 1-2mm to get more plunge for more forward traction.

You dont want to bind the rear too much, you'll loose rotation in the corners and handling in some bumps, the rear will squat less on throttle and feel stiffer around the track.


frankiebonez 01-10-2012 07:15 PM


Originally Posted by aSab (Post 10148988)
turn faster in 180šs or in fast paced turns, chicanes? are they faster than you going in or coming out? is the truck loose/pushing in or out of the corner?

The truck pushes a bit, no chicanes at my track but as I come down into a straight or something I feel it pushes a bit, understeering I believe it would be considered as well. I see other guys wailing around turns so I have to make my adjustments, this is why I dont think its my speed since other people can go around much faster.

I bought some weight to add to the front end this week but havent tried it yet. Sound like a good idea?

frankiebonez 01-10-2012 07:18 PM


Originally Posted by Asharus (Post 10150118)
are you running the same tires as them? if not, that's the first thing i'd change.

yea running the popular tires everyone at the track is.

I find that if I apply more drag brake I definitely turn in better but then the rear gets slippery from the tires locking up since I'm braking through the turns.

Not to toot my own horn but I dont think its driver, I really dont. I just cant get the truck to turn as fast. Maybe rip out the servo saver and put in aluminum bellcrank setup would help?

njnewc 01-10-2012 07:41 PM

What servo. These trucks naturally turn very well.

CraigMBA 01-10-2012 08:05 PM


Originally Posted by frankiebonez (Post 10153189)
Not to toot my own horn but I dont think its driver, I really dont. I just cant get the truck to turn as fast. Maybe rip out the servo saver and put in aluminum bellcrank setup would help?

I run a XP1015 with the stock nut cranked down on the servo saver and my truck is really good. I ran some random guy's out of the box RTR-RS truck I never met before for a couple of laps and was almost as fast in lap times. My complaint is I'm used to a faster servo.

It is possible the adjusting screw on your servo saver has backed off, or the threads are stripped and it has no adjustment other than full loose. Something to check.

Chad Smith 01-11-2012 08:33 AM

Where should I start spring wise on a Med to Low traction track? With a light dust on top if you get out of the groove? Is the stock springs to stiff?

Asharus 01-11-2012 08:45 AM


Originally Posted by frankiebonez (Post 10153189)
yea running the popular tires everyone at the track is.

I find that if I apply more drag brake I definitely turn in better but then the rear gets slippery from the tires locking up since I'm braking through the turns.

Not to toot my own horn but I dont think its driver, I really dont. I just cant get the truck to turn as fast. Maybe rip out the servo saver and put in aluminum bellcrank setup would help?

glue the servo saver, then start with the maifield 2010 roar nats setup, 32.5wt all around, C hole instead of B hole on the rear hub and one extra washer on the rear camber ballstud. 1 small battery pad on the front of the battery


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