R/C Tech Forums

R/C Tech Forums (https://www.rctech.net/forum/)
-   Electric Off-Road (https://www.rctech.net/forum/electric-off-road-4/)
-   -   SC10 4x4 Thread (https://www.rctech.net/forum/electric-off-road/511493-sc10-4x4-thread.html)

MantisWorx 01-04-2012 04:10 PM


Originally Posted by JEFFs SC10 (Post 10123423)
They go on the front right? 4 mm sounds like a lot but what do I know.

yours will have 5!!

BTW its gettin taken apart tonight and i plan on assembling it sat/sunday during the playoffs.

Mizchief 01-04-2012 04:11 PM

Duplicate

Steve737 01-04-2012 04:30 PM

Great, now I have to worry about my tires grabbing too much. I had the same question, as far as the bigger swaybars allow less suspension travel and therefore roll more. Like you said, not questioning the people who say to do it, just questioning the science, I suppose.

Nyk 01-04-2012 04:42 PM


Originally Posted by Steve737 (Post 10124216)
Great, now I have to worry about my tires grabbing too much. I had the same question, as far as the bigger swaybars allow less suspension travel and therefore roll more. Like you said, not questioning the people who say to do it, just questioning the science, I suppose.


The suspension is still doing what its supposed to but the sway bar helps the suspension/arms stay flat...if that makes since...ha when it rolls say to the right the left side of the sway bar keeps from going or making more resistence for it to roll over..

Unless Im wrong as well...lol

JEFFs SC10 01-04-2012 04:44 PM


Originally Posted by MantisWorx (Post 10124121)
yours will have 5!!

BTW its gettin taken apart tonight and i plan on assembling it sat/sunday during the playoffs.


5?! Dang guess thing will be never flip and be on rails. :tire:;)

symmetricon 01-04-2012 04:47 PM

Sway bars are actually called anti-roll bar. It is excessive body roll that causes traction rolling. The thicker the sway bar, the less body roll, consiquently, you generaly get less traction depending on track conditions.

JEFFs SC10 01-04-2012 04:48 PM


Originally Posted by Steve737 (Post 10124216)
Great, now I have to worry about my tires grabbing too much. I had the same question, as far as the bigger swaybars allow less suspension travel and therefore roll more. Like you said, not questioning the people who say to do it, just questioning the science, I suppose.


read this, click suspension and then go to page 7, it talks about sways.
Pretty informative stuff about R/C suspension. Thanks to 20smoke.
http://users.telenet.be/elvo/

vito 01-04-2012 05:04 PM

its here
 
http://i655.photobucket.com/albums/uu273/ancona/034.jpg:D:D:D:D:D

CraigMBA 01-04-2012 05:08 PM


Originally Posted by symmetricon (Post 10124289)
It is excessive grip that causes traction rolling.

Fixed that for you. From here:


If you have a tremendous amount of grip, such as running very sticky tires on a very high traction track, your car can do what we call a "traction roll". A traction roll is when the car flips over for apparently no reason during cornering. Sometimes the car is assisted by lightly touching a corner dot or another car while turning. Having too much traction and too much weight transfer causes this. The weight transfers so far that all of the weight is placed on the outside tires while the inside tires come off the ground. However, the outside tires do not loose their grip with the surface. If the weight continues to shift or is shifting so rapidly that the driver cannot correct, the car will traction roll. Obviously, having your car flip over every turn isn’t the fastest way around the track.
Everyone who has raced on carpet has had this happen when the grip starts to come up. The fix is usually more (larger) front bar, which is the easiest change to make and not totally upset the setup.

Steve737 01-04-2012 05:13 PM


Originally Posted by symmetricon (Post 10124289)
Sway bars are actually called anti-roll bar. It is excessive body roll that causes traction rolling. The thicker the sway bar, the less body roll, consiquently, you generaly get less traction depending on track conditions.

In that case, I probably should have said what kind of track I race on. High grip clay, small track, and they typically change layouts every 6-7 weeks. Current fast laps in practice with no traffic are low 10s, average during a race is 11.5-13ish. Either way, I've learned that I get absolutely zero traction on my lid. :sneaky:

symmetricon 01-04-2012 05:18 PM

I dont feel I needed to be corrected. The body roll causes the traction.
From the hudy setup guide.
Anti-roll bars are used to adjust the car’s
side (lateral) traction. Anti-roll bars resist
chassis roll and by doing so transfer wheel
load from the inside wheel to the outside
wheel. The stiffer the anti-roll bar, the more
load is transferred from the inside wheel to
the outside wheel. However, as the outside
wheel is not able to convert all of the extra
wheel load into extra grip, the sum of the
grip of both wheels is actually reduced.
This changes the balance of the car to the
other axle.

CraigMBA 01-04-2012 05:40 PM


Originally Posted by symmetricon (Post 10124439)
I dont feel I needed to be corrected. The body roll causes the traction.

Sorry, no. Body roll does not cause traction.

Body roll is caused by weight transfer. Traction increases weight transfer, and is totally independent of body roll. Excessive weight transfer in combination with high grip causes traction roll.

From your cite:


From the hudy setup guide.
Anti-roll bars are used to adjust the car’s
side (lateral) traction. Anti-roll bars resist
chassis roll and by doing so transfer wheel
load from the inside wheel to the outside
wheel. The stiffer the anti-roll bar, the more
load is transferred from the inside wheel to
the outside wheel. However, as the outside
wheel is not able to convert all of the extra
wheel load into extra grip, the sum of the
grip of both wheels is actually reduced.

This changes the balance of the car to the
other axle.
Which is why sway bars aka anti roll bars aka stablizer bars reduce traction roll, they do it by reducing overall grip on a given axle by taking load from the outside tire and moving it to the inside tire. Which is why adding roll stiffness reduces traction roll, you are reducing overall grip.

Which, if you think about it, makes sense with what I wrote earlier, and why you'd set the car up to have less mechanical grip when the racing surface grip comes up.

hiflying12 01-04-2012 05:48 PM

squeal
 
Try looseing the gear mesh. Mine did win tight.:smile:

tom2tone 01-04-2012 05:52 PM

Ok I'm about to place my order!! Anything else I need besides...

1. Sc10 4x4
2. Tekin pro4 4000kv motor
3. 14,15,16 tooth pinions
4. Front and rear swaybar sets
5. Set of JC hex hazard wheels (already have indoor tires for now)

JEFFs SC10 01-04-2012 05:57 PM


Originally Posted by tom2tone (Post 10124576)
Ok I'm about to place my order!! Anything else I need besides...

1. Sc10 4x4
2. Tekin pro4 4000kv motor
3. 14,15,16 tooth pinions
4. Front and rear swaybar sets
5. Set of JC hex hazard wheels (already have indoor tires for now)

lots of patience, you'll need lots of that.

also you'll need an RX8 or MMP and a good front servo.

I'm selling a bnip Hitec 7955TG. *shameless plug I know.


All times are GMT -7. It is currently 02:46 PM.

Powered By: vBulletin v3.9.3.9 Patch Level 3
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.