Fukuyama Batteries
#4936
Originally posted by jpn
Would charging Fukus in front of an electric fan be bad for the batts? The batts seem to have much more power (stock racing) when charged this way and they don't get as hot too. By how much would battery life be decreased, if at all? Thanks.
Would charging Fukus in front of an electric fan be bad for the batts? The batts seem to have much more power (stock racing) when charged this way and they don't get as hot too. By how much would battery life be decreased, if at all? Thanks.
however it's your decision to use a fan or not since they are your packs
#4937
Tech Elite
iTrader: (2)
Originally posted by jpn
Would charging Fukus in front of an electric fan be bad for the batts? The batts seem to have much more power (stock racing) when charged this way and they don't get as hot too. By how much would battery life be decreased, if at all? Thanks.
Would charging Fukus in front of an electric fan be bad for the batts? The batts seem to have much more power (stock racing) when charged this way and they don't get as hot too. By how much would battery life be decreased, if at all? Thanks.
More information can be found on Fukuyama Racing website, www.fukuyamaracing.com
Happy racing.
John
#4938
I usually don't see any 1.18 cells on sale in stores, but I saw some at http://www.allspeedhobbies.com this past weekend. They had 1.82 ~ 1.184. If they are selling those in stores, I'll bet the factory guys are probably running 1.195s.
If I do well at the Reedy race this year...maybe Dan will hook me up...Hehehe.
If I do well at the Reedy race this year...maybe Dan will hook me up...Hehehe.
Last edited by stonedgti; 05-10-2004 at 01:29 PM.
#4939
Tech Elite
iTrader: (2)
Originally posted by stonedgti
I usually don't see any 1.18 cells on sale in stores, but I saw some at http://www.allspeedhobbies.com this past weekend. They had 1.82 ~ 1.184. If they are selling those in stores, I'll bet the factory guys are probably running 1.195s.
I usually don't see any 1.18 cells on sale in stores, but I saw some at http://www.allspeedhobbies.com this past weekend. They had 1.82 ~ 1.184. If they are selling those in stores, I'll bet the factory guys are probably running 1.195s.
#4941
oh...look at all those s. You guys are the lucky ones.
I've never seen other matchers have those #s on sale in stores before. I guess Fukuyama has a really good process down.
I've never seen other matchers have those #s on sale in stores before. I guess Fukuyama has a really good process down.
#4942
Originally posted by Matt Howard
"What do you think matchers do? Those are "real" #'s on the cells, not something they made up. The #'s on the pack can tell you how the pack will perform. The lower the internal resistance # the more "punch" or acceleration a pack will have. The higher voltage a pack has the higher top speed your car will have. The higher the runtime # is the more runtime you will have. "
Yes, and what I am asking for is what is coorelation. It can not be that hard to make a graph of acceleration vs ir or voltage.
I have gone through 2 1/2 years of RC magazines and checked out dozens of RC web sites and have yet to see anything but subjective impressions concerning performance not just of batteries, but motors, cars, bodys, tires.
"What do you think matchers do? Those are "real" #'s on the cells, not something they made up. The #'s on the pack can tell you how the pack will perform. The lower the internal resistance # the more "punch" or acceleration a pack will have. The higher voltage a pack has the higher top speed your car will have. The higher the runtime # is the more runtime you will have. "
Yes, and what I am asking for is what is coorelation. It can not be that hard to make a graph of acceleration vs ir or voltage.
I have gone through 2 1/2 years of RC magazines and checked out dozens of RC web sites and have yet to see anything but subjective impressions concerning performance not just of batteries, but motors, cars, bodys, tires.
#4943
Tech Addict
I don't know if this will help, but
Horsepower = Torque X RPM
Amps give torque, Volts make RPM The more of both, the faster the motor, or the more the power.
Lower IR allows the batteries to produce more amps. Voltage is printed right on the cell.
Horse power = about 750 Watts.
Watts = Volts X Amps The more the merrier.
All this is great, but if you have a crap motor, the best batteries in the world won't help. Its a package deal.
Best motor, best batteries, lowest resistance ESC, most aerodynamic body, least drag in the drive train (this is why I race a PAN CAR). All is great but without the best driver?
The only thing that isn't subjective are the #s on the batteries.
I hope I explained what you wanted to know.
David Root
Horsepower = Torque X RPM
Amps give torque, Volts make RPM The more of both, the faster the motor, or the more the power.
Lower IR allows the batteries to produce more amps. Voltage is printed right on the cell.
Horse power = about 750 Watts.
Watts = Volts X Amps The more the merrier.
All this is great, but if you have a crap motor, the best batteries in the world won't help. Its a package deal.
Best motor, best batteries, lowest resistance ESC, most aerodynamic body, least drag in the drive train (this is why I race a PAN CAR). All is great but without the best driver?
The only thing that isn't subjective are the #s on the batteries.
I hope I explained what you wanted to know.
David Root
#4944
Tech Regular
Mako
Bought three motors monday and they came in just intime for Saturday racing at Socal.
Had bad luck with the first motor on the first run. Car got tapped during practice and stopped dead in its tracks. The laminations seemed to have been blown out.
Second motor didn't really come on until after I cut it once after three runs. It was the main and I qualified fourth position. I got behind early because of a pile up in the first turn. I made it into third position by the second lap. That's when the announcer called out lap times and my laptime was .7 seconds faster than first and second. That got me way too excited and I dotted, causing a broken c-hub. If I hadn't dotted I am confident that motor would have gotten me into first place.
Had bad luck with the first motor on the first run. Car got tapped during practice and stopped dead in its tracks. The laminations seemed to have been blown out.
Second motor didn't really come on until after I cut it once after three runs. It was the main and I qualified fourth position. I got behind early because of a pile up in the first turn. I made it into third position by the second lap. That's when the announcer called out lap times and my laptime was .7 seconds faster than first and second. That got me way too excited and I dotted, causing a broken c-hub. If I hadn't dotted I am confident that motor would have gotten me into first place.
#4945
Tech Master
iTrader: (2)
Wow! I didn't know not to use a fan to cool the batts during the charge process. I just started using one about a month ago. I am going to stop using one and monitor the temps of my batts with a temp gun. I'm assuming it's okay to cool them with a fan after a run while you are discharging them? As always thanks for the great tech help on this thread!
racer-oZ
racer-oZ
#4947
Tech Champion
iTrader: (17)
Originally posted by racer-oZ
Wow! I didn't know not to use a fan to cool the batts during the charge process. I just started using one about a month ago. I am going to stop using one and monitor the temps of my batts with a temp gun. I'm assuming it's okay to cool them with a fan after a run while you are discharging them? As always thanks for the great tech help on this thread!
racer-oZ
Wow! I didn't know not to use a fan to cool the batts during the charge process. I just started using one about a month ago. I am going to stop using one and monitor the temps of my batts with a temp gun. I'm assuming it's okay to cool them with a fan after a run while you are discharging them? As always thanks for the great tech help on this thread!
racer-oZ
#4950
Tech Champion
iTrader: (6)
Originally posted by STLNLST
I got to run a Fukuyama battery pack this past weekend for my main and I'm very impressed. I'll definately send in a resume to them after the Reedy race. Great punch and runtime. It made me faster than the sponsored driver that let me use the pack....LOL
I got to run a Fukuyama battery pack this past weekend for my main and I'm very impressed. I'll definately send in a resume to them after the Reedy race. Great punch and runtime. It made me faster than the sponsored driver that let me use the pack....LOL