1LikesInferno MP9 thread
10-10-2016, 02:30 PM - Wikipost
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12-29-2011, 06:23 PM
#7861
This makes sense
Found this from, of all places, the Traxxas website. Pretty straight forward:
"This adjustment is made by changing the position of the upper suspension arm pin location. There are two positions available. The upper position allows more chassis roll and basically eases the weight transition of the chassis. The lower positions "tighten" up the chassis and resist chassis roll, kind of like a sway bar. The result is faster weight transfer, which makes the chassis more responsive to input. Since the Slayer's track width is fairly narrow compared to its wheelbase, the chassis is inherently responsive. I recommend starting with the roll center pins in the upper holes. Only use the rear pin locations as a possible adjustment. I recommend not using the lower front roll center location, since it makes the front end a little twitchy. It will also take out a considerable amount of steering from the chassis. The rear is different. The lower pin position can actually be used when extra steering is needed. However, if you're already using the Slayer sway bar kit, I recommend leaving the rear pins in the upper location."
"This adjustment is made by changing the position of the upper suspension arm pin location. There are two positions available. The upper position allows more chassis roll and basically eases the weight transition of the chassis. The lower positions "tighten" up the chassis and resist chassis roll, kind of like a sway bar. The result is faster weight transfer, which makes the chassis more responsive to input. Since the Slayer's track width is fairly narrow compared to its wheelbase, the chassis is inherently responsive. I recommend starting with the roll center pins in the upper holes. Only use the rear pin locations as a possible adjustment. I recommend not using the lower front roll center location, since it makes the front end a little twitchy. It will also take out a considerable amount of steering from the chassis. The rear is different. The lower pin position can actually be used when extra steering is needed. However, if you're already using the Slayer sway bar kit, I recommend leaving the rear pins in the upper location."
12-29-2011, 06:25 PM
#7862
Just thought I'd add that the CG is always static - any time that one cares about where it is or wants to measure its location would be quite a headache if the CG weren't static. Of course the CG moves around when the car does, as in, under acceleration the front of the car rises and the rear of the car squats, so of course, the CG has to move to be in the correct position relative to how the car has changed. Or when braking, front dips and rear of car gets higher, so again, CG has to accomodate these changes. But the point is that whenever the actual CG needs to be located or found for some reason, it is static - until something on the car changes from the last time the CG was located.
Easiest way to understand exactly what the roll centre is and what effect there is from it's moving higher or lower is: think of the CG (just for explanatory purposes) as being located right on the middle bolt in the front shock tower, inline with and between the camber links. Now picture that the roll centre is directly underneath the CG, perhaps 15mm lower, towards the chassis. So when the car is rolling left or right in a corner, the actual forces at work are being experienced by the car at the roll centre, so the roll centre is also the axis of rotation.
The roll centre and the CG work like a pendulum such that if the roll centre is lowered, the pendulum is longer, therefore the car will generate more roll and hence more grip. If the roll centre is raised, the pendulum gets shorter, therefore, with the same force acting through the roll centre, the car will roll much less as the pendulum is so much shorter.
Incidentally, the fact that the roll centre in a car is always under the CG and in a bike (motorbike, bicycle, whatever) the roll centre is always above the CG explains exactly why a bike leans into a corner, whereas a car will always lean the opposite way in a corner, to the outside.
Easiest way to understand exactly what the roll centre is and what effect there is from it's moving higher or lower is: think of the CG (just for explanatory purposes) as being located right on the middle bolt in the front shock tower, inline with and between the camber links. Now picture that the roll centre is directly underneath the CG, perhaps 15mm lower, towards the chassis. So when the car is rolling left or right in a corner, the actual forces at work are being experienced by the car at the roll centre, so the roll centre is also the axis of rotation.
The roll centre and the CG work like a pendulum such that if the roll centre is lowered, the pendulum is longer, therefore the car will generate more roll and hence more grip. If the roll centre is raised, the pendulum gets shorter, therefore, with the same force acting through the roll centre, the car will roll much less as the pendulum is so much shorter.
Incidentally, the fact that the roll centre in a car is always under the CG and in a bike (motorbike, bicycle, whatever) the roll centre is always above the CG explains exactly why a bike leans into a corner, whereas a car will always lean the opposite way in a corner, to the outside.
12-29-2011, 07:17 PM
#7863
12-31-2011, 04:44 AM
#7864
My first ride 14 tanks.I'm very happy this car Kyosho TKI2!
Setup JT Neo11.
http://www.youtube.com/watch?v=XrMQ8-umc8w
Setup JT Neo11.
http://www.youtube.com/watch?v=XrMQ8-umc8w
12-31-2011, 12:47 PM
#7866
yes, idle way to high.. it will corner much better with the idle laying down properly
12-31-2011, 03:33 PM
#7867
Thaks for TIP Idle Hookem and pitpop!
01-02-2012, 10:33 AM
#7870
My first ride 14 tanks.I'm very happy this car Kyosho TKI2!
Setup JT Neo11.
http://www.youtube.com/watch?v=XrMQ8-umc8w
Setup JT Neo11.
http://www.youtube.com/watch?v=XrMQ8-umc8w
hello
is this a indoor track? were is it?
looks like fun
best thomas
01-02-2012, 11:08 AM
#7871
^ Looks like Lithuania's first indoor nitro track
01-02-2012, 12:45 PM
#7872
This is New Indoor Track in LITHUANIA.Me and RC-Cars.lt team made this track.
Its my first experience of desing track.Of course this track will be upgrade in summer.
All are welcome 2012.01.28 off-road Winter Challenge 2
Registration: 2012.01.20
More info http://www.rc-cars.lt/
Or PM.
http://www.youtube.com/watch?v=WIpGMhuNk3E
Its my first experience of desing track.Of course this track will be upgrade in summer.
All are welcome 2012.01.28 off-road Winter Challenge 2
Registration: 2012.01.20
More info http://www.rc-cars.lt/
Or PM.
http://www.youtube.com/watch?v=WIpGMhuNk3E
01-02-2012, 04:34 PM
#7873
Suspended
iTrader: (2)
Hi all.
I got an MP9 only recently and am still in the process of getting it all happening.
I worked out last night that my LRP starter box is not going to do the job with this car.
Just wondering what starter box everyone is using or would recommend.
Sorry. Bit of a noob. Any advice would be much appreciated.
I got an MP9 only recently and am still in the process of getting it all happening.
I worked out last night that my LRP starter box is not going to do the job with this car.
Just wondering what starter box everyone is using or would recommend.
Sorry. Bit of a noob. Any advice would be much appreciated.
01-02-2012, 04:43 PM
#7875
The kyosho one or ofna one
http://www.amainhobbies.com/product_...ter-Box-Pro-20
http://www.amainhobbies.com/product_...gy-Starter-Box
http://www.amainhobbies.com/product_...ter-Box-Pro-20
http://www.amainhobbies.com/product_...gy-Starter-Box