Serpent X20
#181
Tech Initiate
Yes the car is very soft even if you have alu version. I have alu and I have problem with traction roll too. I raced on ETS black carpet in modified(open) category. We used Sweep R3 32 tires. I will post detail things what i tried and what help, but now I am at work. I tried to create some stiffeners on 3d printer. I helps, but the plast is still soft.
#182
Tech Initiate
3d printed bracers
Hi, Here is my chassis bracers. It is made from PLA. It helps little bit, but it is too soft. It is first version. Next version will have more material and I have plan to use another material, which is harder. I think that I will put it somewhere on web after I test another version.
Next thing is to cut the bottom bumper holder. I already cut it, but it is needed more. On one picture is red line, where i plan to cut it, because I have rubber on it from carpet, when it touch ground in corners. It is definitely not good.
I try add more shims under front upper arm holder and less in the rear to help again traction roll. But best thing is, to reduce steering lock. (Alex Hagberg wrote about this on FB today) I change it on radio, because if you realize just before start, that you have problem, reduce steering should help you do the current round. On last race, I reduced by 10% and it help a lot and I have no problem with understeer. I don't like to use glue on side of tires.
Next thing is to cut the bottom bumper holder. I already cut it, but it is needed more. On one picture is red line, where i plan to cut it, because I have rubber on it from carpet, when it touch ground in corners. It is definitely not good.
I try add more shims under front upper arm holder and less in the rear to help again traction roll. But best thing is, to reduce steering lock. (Alex Hagberg wrote about this on FB today) I change it on radio, because if you realize just before start, that you have problem, reduce steering should help you do the current round. On last race, I reduced by 10% and it help a lot and I have no problem with understeer. I don't like to use glue on side of tires.
#185
Hi, Here is my chassis bracers. It is made from PLA. It helps little bit, but it is too soft. It is first version. Next version will have more material and I have plan to use another material, which is harder. I think that I will put it somewhere on web after I test another version.
Next thing is to cut the bottom bumper holder. I already cut it, but it is needed more. On one picture is red line, where i plan to cut it, because I have rubber on it from carpet, when it touch ground in corners. It is definitely not good.
I try add more shims under front upper arm holder and less in the rear to help again traction roll. But best thing is, to reduce steering lock. (Alex Hagberg wrote about this on FB today) I change it on radio, because if you realize just before start, that you have problem, reduce steering should help you do the current round. On last race, I reduced by 10% and it help a lot and I have no problem with understeer. I don't like to use glue on side of tires.
Next thing is to cut the bottom bumper holder. I already cut it, but it is needed more. On one picture is red line, where i plan to cut it, because I have rubber on it from carpet, when it touch ground in corners. It is definitely not good.
I try add more shims under front upper arm holder and less in the rear to help again traction roll. But best thing is, to reduce steering lock. (Alex Hagberg wrote about this on FB today) I change it on radio, because if you realize just before start, that you have problem, reduce steering should help you do the current round. On last race, I reduced by 10% and it help a lot and I have no problem with understeer. I don't like to use glue on side of tires.
#186
Tech Initiate
Are you running the ETS tires on the ETS carpet? If your on CRC black you pretty much have to glue the sidewalls, but if your on ETS carpet, besides getting the car stiffer, I would put 30 grams of lead in the nose of the car. Right in the front bumber, cut a notch out for it. That alone will do miracles.
Thanks for tip with weight, I will try that. I have weights under steering lever, but I understand, that more in front before axel help.
For me was miracle with reducing steering on radio. I will also prepare some wider shims under ball on steeringrack to limit end lock, which use Alex Hagberg on Xray.
#188
Tech Elite
iTrader: (101)
#189
Tech Regular
iTrader: (4)
On black CRC carpet, glueing the sidewalls is one of the most important things to do. If the traction is high enough then glue all the sidewall. At some races, the fastest guys even glue onto the racing surface of the tire itself. Another possible thing to try is to widen the car, that helps too.
Is it wrong of me to think the car had to much flex for a carbon chassis? If i were to do it again. I would add the arms graphite stiffeners and I have a rear X brace that fits on the chassis just behind the motor. Would this have helped?
#190
Tech Champion
iTrader: (62)
Brian10811, this might sound like an off the wall question but how many layers of glue were you running. Many times on high bite CRC black carpet you have to get the right diameter of glue as well as the right thickness. Sometimes one layer is just too thin. Unfortunately though if you are going to run black carpet might want to invest in an alloy chassis.
#191
Tech Regular
iTrader: (4)
Brian10811, this might sound like an off the wall question but how many layers of glue were you running. Many times on high bite CRC black carpet you have to get the right diameter of glue as well as the right thickness. Sometimes one layer is just too thin. Unfortunately though if you are going to run black carpet might want to invest in an alloy chassis.
#192
Tech Initiate
Is this a runing change?
Are from my second car:
Are from my second car:
#193
#195
Tech Initiate