Speed Secrets (SS)
02-23-2008, 01:50 AM
#136
Tech Master
iTrader: (23)
Join Date: Jun 2005
Location: wonderfull place called, MALAYSIA.
Posts: 1,592
Trader Rating: 23 (96%+)
red......
interested in racing R/C car again?......
maybe we can set appointment to race our Z like old times?
i have visited dynasty, i would say super cool racing experience, no sweat at all man, only sweat underpressure
will call to make appointment with you when i go again??
interested in racing R/C car again?......
maybe we can set appointment to race our Z like old times?
i have visited dynasty, i would say super cool racing experience, no sweat at all man, only sweat underpressure
will call to make appointment with you when i go again??
02-23-2008, 01:52 AM
#137
Tech Master
iTrader: (23)
Join Date: Jun 2005
Location: wonderfull place called, MALAYSIA.
Posts: 1,592
Trader Rating: 23 (96%+)
02-25-2008, 02:48 AM
#138
red......
interested in racing R/C car again?......
maybe we can set appointment to race our Z like old times?
i have visited dynasty, i would say super cool racing experience, no sweat at all man, only sweat underpressure
will call to make appointment with you when i go again??
interested in racing R/C car again?......
maybe we can set appointment to race our Z like old times?
i have visited dynasty, i would say super cool racing experience, no sweat at all man, only sweat underpressure
will call to make appointment with you when i go again??
08-20-2008, 11:14 PM
#140
some very good info by Jcyrul from the recent ifmar WC 08...
>>>>>>>>>>>>>
The newly crowned WC ran a perfect and very smart final. No problems, no mistakes and drove quick when he needed to.
Was he down on power?? Maybe a little on the straight but you could easily hear that the gearing was set more to have very strong pull through the infield rather than super high top end on the straight. The end of the straight was quite bumpy so you had to back off anyway so I don't think having a lot of top end was a benifit. I changed gearing which gave me really good top end but it was to help with shifting point and fuel milage, not for top speed. I heard some of the OS guys were super happy with their top end but complained about not enough bottom end power. Power (top/bottom) and fuel milage are always a balance. Look at defending WC Fukuda. He was looking great at the end of practice but fuel milage ultimatley cost him a good qualifying postition and a chance to defend his title.
Also, you have to think of these finals as a balancing act. Ielasi ran 1 hour with 5 minute pit stops and as you could see from the pictures still had good tires left at the end. Put in an engine that makes you run 4:30-4:45 and the tire wear goes up (as the case for Tosso and Hudy) and you have the chance to run quicker but run the risk of wearing extra tires. Not to mention that for a 4:45 pit you have to make 1 extra stop (4-5 seconds) and for a 4:30 pit you have to make 2 extra stops (8-10 seconds).
When talking with Paul before the race he wasn't sure if his car was good enough on tire wear to run the entire hour. Also, our concern with the increasing traction level and bumps in the sweeper were something to look at as several top runner's final was either hurt or finished by traction/bump rolls in the sweeper on the big tires. The idea was to run smaller tires, do the change and force the others to run a disiplined race and not try to chase the rabbit out there. Several drivers did drop out trying to chase the rabbit and the plan was working perfectly as Paul needed a 1 1/2-2 lap cushion going into the tire change which he did perfectly. Unfortunetly, the engine cut and we couldn't get it to fire fast enough. We had no problems re-starting it all week as Paul was using a plastic carburator so having that problem didn't even cross my mind.
In the end, there are so many ways to run a 1 hour final and have a shot at winning. In Messina at the 1/8 WC, Collari did 1 tire change at 30 minutes and Ielasi did 2 tire changes (at 20 and 40 minutes) and had Collari beat but a final pit crash in the pit lane cost him the WC.... Any plan, if executed correctly can win but each has risks and requires disipline to execute.
>>>>>>>>>>>>
>>>>>>>>>>>>>
The newly crowned WC ran a perfect and very smart final. No problems, no mistakes and drove quick when he needed to.
Was he down on power?? Maybe a little on the straight but you could easily hear that the gearing was set more to have very strong pull through the infield rather than super high top end on the straight. The end of the straight was quite bumpy so you had to back off anyway so I don't think having a lot of top end was a benifit. I changed gearing which gave me really good top end but it was to help with shifting point and fuel milage, not for top speed. I heard some of the OS guys were super happy with their top end but complained about not enough bottom end power. Power (top/bottom) and fuel milage are always a balance. Look at defending WC Fukuda. He was looking great at the end of practice but fuel milage ultimatley cost him a good qualifying postition and a chance to defend his title.
Also, you have to think of these finals as a balancing act. Ielasi ran 1 hour with 5 minute pit stops and as you could see from the pictures still had good tires left at the end. Put in an engine that makes you run 4:30-4:45 and the tire wear goes up (as the case for Tosso and Hudy) and you have the chance to run quicker but run the risk of wearing extra tires. Not to mention that for a 4:45 pit you have to make 1 extra stop (4-5 seconds) and for a 4:30 pit you have to make 2 extra stops (8-10 seconds).
When talking with Paul before the race he wasn't sure if his car was good enough on tire wear to run the entire hour. Also, our concern with the increasing traction level and bumps in the sweeper were something to look at as several top runner's final was either hurt or finished by traction/bump rolls in the sweeper on the big tires. The idea was to run smaller tires, do the change and force the others to run a disiplined race and not try to chase the rabbit out there. Several drivers did drop out trying to chase the rabbit and the plan was working perfectly as Paul needed a 1 1/2-2 lap cushion going into the tire change which he did perfectly. Unfortunetly, the engine cut and we couldn't get it to fire fast enough. We had no problems re-starting it all week as Paul was using a plastic carburator so having that problem didn't even cross my mind.
In the end, there are so many ways to run a 1 hour final and have a shot at winning. In Messina at the 1/8 WC, Collari did 1 tire change at 30 minutes and Ielasi did 2 tire changes (at 20 and 40 minutes) and had Collari beat but a final pit crash in the pit lane cost him the WC.... Any plan, if executed correctly can win but each has risks and requires disipline to execute.
>>>>>>>>>>>>
09-02-2008, 07:00 PM
#142
speed secret to me is spur 98+pinion 42+lipoand + hand winding motor...ok ma..dant care bout heat..
09-14-2008, 09:56 AM
#144
Just read the very big fuss about drivers cheating in the not too distant TAC finals. I'm dissapointed that I missed all the drama, controversies, politics. But the post race drama is just as exciting....
Read all about it here:
http://www.rctech.net/forum/electric...p-final-6.html
Just throwing a dumb rhetoric question. Does the motor rpm alone can make your car faster?
Well, from my limited experiece, it's partly true. There are a few factors to consider too. Like your motor torque, power, voltage, driving skill, luck etc etc etc. Correct me if I am wrong, the higher the rpm, the lower the torque.
RAcing is as much an art and science as it is about skill. Finding the correct balance of torque and rpm to suit a particular track is art by itself. The science of Power = Voltage X Current. Increasing voltage can make your car a lil bit more powerful and probably go faster. Since power is directly proportion to voltage and Current, it is wise to squeeze as much voltage from your battery pack as possible. And increase the current flow. How? After consulting some experts:
Voltage can be increase by using fresh batteries (less internal resistance, Peaking batteries using higher rate of charge. How many amps? Those days was 7A (bateri cepat kong). Now, lost touch oredi......Making sure all cells have same rate of discharge. Thats why we discharge individual cell. So by balancing all the 6 cells it is as if all 6 cylinders are running at optimum level.
Current can be increase by reducing resistance. Use cables that is as short as possible. Use good connector. Tamiya connector is barely enough to cater high amp discharge. Better still use direct soldering
Just my 2 cents. Cheers. Selamat berpuasa to all Miuslims.
Read all about it here:
http://www.rctech.net/forum/electric...p-final-6.html
Just throwing a dumb rhetoric question. Does the motor rpm alone can make your car faster?
Well, from my limited experiece, it's partly true. There are a few factors to consider too. Like your motor torque, power, voltage, driving skill, luck etc etc etc. Correct me if I am wrong, the higher the rpm, the lower the torque.
RAcing is as much an art and science as it is about skill. Finding the correct balance of torque and rpm to suit a particular track is art by itself. The science of Power = Voltage X Current. Increasing voltage can make your car a lil bit more powerful and probably go faster. Since power is directly proportion to voltage and Current, it is wise to squeeze as much voltage from your battery pack as possible. And increase the current flow. How? After consulting some experts:
Voltage can be increase by using fresh batteries (less internal resistance, Peaking batteries using higher rate of charge. How many amps? Those days was 7A (bateri cepat kong). Now, lost touch oredi......Making sure all cells have same rate of discharge. Thats why we discharge individual cell. So by balancing all the 6 cells it is as if all 6 cylinders are running at optimum level.
Current can be increase by reducing resistance. Use cables that is as short as possible. Use good connector. Tamiya connector is barely enough to cater high amp discharge. Better still use direct soldering
Just my 2 cents. Cheers. Selamat berpuasa to all Miuslims.
Last edited by RedEnzo; 09-14-2008 at 07:02 PM.
09-14-2008, 06:35 PM
#145
Nothing new.
It happens all the time.
It happens all the time.
09-14-2008, 06:46 PM
#146
RAcing is as much an art and science as it is about skill. Finding the correct balance of torque and rpm to suit a particular track is art by itself. The science of Power = Voltage X Resistance. Increasing voltage can make your car a lil bit more powerful and probably go faster. Since power is directly proportion to voltage, it is wise to squeeze as much voltage from your battery pack as possible. How? Ask the experts.
it should be P=V^2/R or P=I (current) x Voltage
more applicable to RC motors or car engines: power = revolutions (rpm) x torque.
09-16-2008, 03:49 AM
#149
09-16-2008, 03:36 PM
#150
Your wish is my command. I've posted a new thread "CHEAT SECRETS". So if anyone of you out there would like to share any incident of racer caught cheating (no name please) please share.
Click here please -> http://www.rctech.net/forum/malaysia...ml#post4845622
Click here please -> http://www.rctech.net/forum/malaysia...ml#post4845622