Team Associated B6 & B6D thread
|
|||
#9092
Tech Elite
It is a personal thing. I know guys that run lots of weight and some don't. Both guys could win the A Main. Brass bulkhead is used by both guys. I would most certainly run the brass bulkhead hence why I purchased one. With weights it really depends on what you like in a car and set-up.
#9093
Tech Master
The closer that weight is to the axle centre of mass of the vehicle (usually somewhere near the middle of the wheelbase on a laydown mid-motor 2wd) the LESS effect that weight will have on that axle.
So for example if you ran a 35g brass bulkhead to get the mid-exit steering you want in high speed sweeping corners but the car was slow to respond in a tight twisty infield section you could remove the brass bulkhead and put weight in the servo area, but you'd have to put a lot more weight in at the servo to match the loading provided by the brass bulkhead, lets say 55g for sake of discussion. This is because the servo weight is much closer to the centre of mass.
Now this of course isn't the whole story, nothing with vehicle dynamics ever is that simple. Because you have less weight over the front axle that axle needs less spring rate to achieve the same static axle loading so you go down a spring and you get the high speed steering back BUT you lose a little bit of the initial steering that you gained by moving the weight back. Actually you'd put less weight in at the servo than you thought you needed as now you have a softer spring to load .... there becomes a balancing point.
How would you get the initial steering that you originally moved the mass to get, probably stand the front shocks up a hole and raise the front roll centre a little.
SO ... how do you decided where to put the weight to start with?
As a rule of thumb;
High grip = twitchy car = put weight over the axle to dumb down the response.
Low grip = lazy turn in and rotation from the rear giving lots of mid-exit steering on power = weight more towards the middle / rear
If I'm going to a track I don't know I will build the car as so depending on the layout and surface;
Tight & twisty = less weight at bulkhead more in electronics area
Open and sweeping = more weight at the bulkhead less in the electronics area
Low grip (wet astroturf or gym floor) = car as light as I can and more central - rear bias (1480g-1500g typical)
Medium grip (sandy astroturf / old wornout carpet (primafelt type) = car a little heavier to make it safer but weight more central (1500g-1550g typical)
High grip (clean astroturf, new primafelt or older EOS) = a little heavier again, weight slightly more forward bias (probably all weights except the brass bulkhead) (1525g - 1575g typical)
Very high grip (fresh EOS carpet) = heavy car, weight as far forward as possible (1600g-1650g)
#9094
The more weight you run near one end of the car the SLOWER that end will react and the MORE OVERALL effect there will be once the car has rolled as far as it is going to etc.
The closer that weight is to the axle centre of mass of the vehicle (usually somewhere near the middle of the wheelbase on a laydown mid-motor 2wd) the LESS effect that weight will have on that axle.
So for example if you ran a 35g brass bulkhead to get the mid-exit steering you want in high speed sweeping corners but the car was slow to respond in a tight twisty infield section you could remove the brass bulkhead and put weight in the servo area, but you'd have to put a lot more weight in at the servo to match the loading provided by the brass bulkhead, lets say 55g for sake of discussion. This is because the servo weight is much closer to the centre of mass.
Now this of course isn't the whole story, nothing with vehicle dynamics ever is that simple. Because you have less weight over the front axle that axle needs less spring rate to achieve the same static axle loading so you go down a spring and you get the high speed steering back BUT you lose a little bit of the initial steering that you gained by moving the weight back. Actually you'd put less weight in at the servo than you thought you needed as now you have a softer spring to load .... there becomes a balancing point.
How would you get the initial steering that you originally moved the mass to get, probably stand the front shocks up a hole and raise the front roll centre a little.
SO ... how do you decided where to put the weight to start with?
As a rule of thumb;
High grip = twitchy car = put weight over the axle to dumb down the response.
Low grip = lazy turn in and rotation from the rear giving lots of mid-exit steering on power = weight more towards the middle / rear
If I'm going to a track I don't know I will build the car as so depending on the layout and surface;
Tight & twisty = less weight at bulkhead more in electronics area
Open and sweeping = more weight at the bulkhead less in the electronics area
Low grip (wet astroturf or gym floor) = car as light as I can and more central - rear bias (1480g-1500g typical)
Medium grip (sandy astroturf / old wornout carpet (primafelt type) = car a little heavier to make it safer but weight more central (1500g-1550g typical)
High grip (clean astroturf, new primafelt or older EOS) = a little heavier again, weight slightly more forward bias (probably all weights except the brass bulkhead) (1525g - 1575g typical)
Very high grip (fresh EOS carpet) = heavy car, weight as far forward as possible (1600g-1650g)
The closer that weight is to the axle centre of mass of the vehicle (usually somewhere near the middle of the wheelbase on a laydown mid-motor 2wd) the LESS effect that weight will have on that axle.
So for example if you ran a 35g brass bulkhead to get the mid-exit steering you want in high speed sweeping corners but the car was slow to respond in a tight twisty infield section you could remove the brass bulkhead and put weight in the servo area, but you'd have to put a lot more weight in at the servo to match the loading provided by the brass bulkhead, lets say 55g for sake of discussion. This is because the servo weight is much closer to the centre of mass.
Now this of course isn't the whole story, nothing with vehicle dynamics ever is that simple. Because you have less weight over the front axle that axle needs less spring rate to achieve the same static axle loading so you go down a spring and you get the high speed steering back BUT you lose a little bit of the initial steering that you gained by moving the weight back. Actually you'd put less weight in at the servo than you thought you needed as now you have a softer spring to load .... there becomes a balancing point.
How would you get the initial steering that you originally moved the mass to get, probably stand the front shocks up a hole and raise the front roll centre a little.
SO ... how do you decided where to put the weight to start with?
As a rule of thumb;
High grip = twitchy car = put weight over the axle to dumb down the response.
Low grip = lazy turn in and rotation from the rear giving lots of mid-exit steering on power = weight more towards the middle / rear
If I'm going to a track I don't know I will build the car as so depending on the layout and surface;
Tight & twisty = less weight at bulkhead more in electronics area
Open and sweeping = more weight at the bulkhead less in the electronics area
Low grip (wet astroturf or gym floor) = car as light as I can and more central - rear bias (1480g-1500g typical)
Medium grip (sandy astroturf / old wornout carpet (primafelt type) = car a little heavier to make it safer but weight more central (1500g-1550g typical)
High grip (clean astroturf, new primafelt or older EOS) = a little heavier again, weight slightly more forward bias (probably all weights except the brass bulkhead) (1525g - 1575g typical)
Very high grip (fresh EOS carpet) = heavy car, weight as far forward as possible (1600g-1650g)
#9095
Tech Master
My pleasure, happy to help any way I can.
#9096
Tech Initiate
iTrader: (2)
b6 sway bars ...
hey guys, just picked up a B6 from a member on here. so far very happy with it. I will be running on carpet, and I'm looking to add sway bars. the B6 rear bars are discontinued (91736) but it looks like I can use the 6.1 rear bars and hardware according to Associated, although it appears to be missing rod ends, which I should be able to piece together.
anyways, I'm wondering what everyone has done for front bars on their B6's or if they are generally not needed?
Thanks
anyways, I'm wondering what everyone has done for front bars on their B6's or if they are generally not needed?
Thanks
#9097
Tech Elite
B6.1 Anti-roll Bar Hardware
The hardware packs #71134 and #91821 do not include the ball cups. Purchase them here: #91820..
You need to buy the tie rod ends to get the pieces to finish it
https://www.teamassociated.com/parts/details/91820/
The hardware packs #71134 and #91821 do not include the ball cups. Purchase them here: #91820..
You need to buy the tie rod ends to get the pieces to finish it
https://www.teamassociated.com/parts/details/91820/
#9098
Tech Regular
iTrader: (5)
hey guys, just picked up a B6 from a member on here. so far very happy with it. I will be running on carpet, and I'm looking to add sway bars. the B6 rear bars are discontinued (91736) but it looks like I can use the 6.1 rear bars and hardware according to Associated, although it appears to be missing rod ends, which I should be able to piece together.
anyways, I'm wondering what everyone has done for front bars on their B6's or if they are generally not needed?
Thanks
anyways, I'm wondering what everyone has done for front bars on their B6's or if they are generally not needed?
Thanks
#9102
Would you suggest the same for a gen 2 tekin in 17.5? Or go a different route? I have a 72 and 69 on hand and still havnt made the decision on where to start
#9104
Thank you, have a 69/30 installed now, have yet to run it but thats where my slight memory of rc racing has put me lol
#9105
new b6
been racing for about 6 months now and was qualifying into A mains with my b4 but was getting my ass kicked by all the new gen cars so i had to go out and pick up a new gen car myself. my local is a medium high masonite/capet mix so i ended up getting a b6 with a ball diff installed for 190 which isn't bad. came with brand new tires never glued, i was wondering whats with the b6 shock towers and how come they are pretty much extinct to the new geometry towers, im finding it hard setting up my car cause i cant tell what towers the ft drivers are using in their b6 setups from a couple years ago.
also what are all the adaptable b6.1 parts i can put on my car besides the arms and tower, would a 6.1 front chassis brace fit on a b6? thanks, looking forward to this race season.
also i did upload photos but apparently i can not upload until i make 10 posts on this forum which is kind of dumb lol.
also what are all the adaptable b6.1 parts i can put on my car besides the arms and tower, would a 6.1 front chassis brace fit on a b6? thanks, looking forward to this race season.
also i did upload photos but apparently i can not upload until i make 10 posts on this forum which is kind of dumb lol.