SC10 4x4 Thread
#2701
I spoke with Don at AE and he said the sway bars are gone and they get a shipment every two weeks . they got 500 of them and there gone already I hope I get mine on the next go around .I love my tuck but i can tell it need the bars .
oh and I must be a real novice since I didnt know that if you dont poke holes in the treads of the tires you can ruin them from them filling up with dirt ...what a homer simpson moment for me DOHHH lol I am however bummed its not in the manual that theres an issue with the stock wheels . at least some type of tip in the tire gluing section . Oh well live and learn ...lol
oh and I must be a real novice since I didnt know that if you dont poke holes in the treads of the tires you can ruin them from them filling up with dirt ...what a homer simpson moment for me DOHHH lol I am however bummed its not in the manual that theres an issue with the stock wheels . at least some type of tip in the tire gluing section . Oh well live and learn ...lol
#2702
I might not be back to Medina for a month...off this week, Pro Series at area 54, then the sct jamboree, then round 2 of the oeoss. Sucks, cause i got the two parts in that I think will give me a few more tenths and some more consistency and was wanting to try them out
I'm still not happy that Lutz was a few tenths faster than my lap times so I have some work to do
#2703
I spoke with Don at AE and he said the sway bars are gone and they get a shipment every two weeks . they got 500 of them and there gone already I hope I get mine on the next go around .I love my tuck but i can tell it need the bars .
oh and I must be a real novice since I didnt know that if you dont poke holes in the treads of the tires you can ruin them from them filling up with dirt ...what a homer simpson moment for me DOHHH lol I am however bummed its not in the manual that theres an issue with the stock wheels . at least some type of tip in the tire gluing section . Oh well live and learn ...lol
oh and I must be a real novice since I didnt know that if you dont poke holes in the treads of the tires you can ruin them from them filling up with dirt ...what a homer simpson moment for me DOHHH lol I am however bummed its not in the manual that theres an issue with the stock wheels . at least some type of tip in the tire gluing section . Oh well live and learn ...lol
If you are using closed cell inserts I dont think its a problem , but the older style open cell inserts will turn to dust if they get dirt/water in them .
#2704
So where did 500 swaybars go? I hope hobby shops, I can't imagine AE selling 500 directly to customers.
#2705
I've read about 75 pages and haven't found my answer yet and reading another 100+ pages, well I really don't have the time for it while I'm at work 
FDR - Is a lower number faster or is a higher number? I know the math to get to that number, but what does it mean exactly?
Thanks

FDR - Is a lower number faster or is a higher number? I know the math to get to that number, but what does it mean exactly?
Thanks
For example, the SC10 4x4 has an internal transmission ratio of 2.57. If you were to use a 62 tooth spur gear and a 12 tooth pinion gear, the final drive ratio would be:
FDR = (spur / pinion) x Transmission Ratio
FDR = (62/12) x 2.57
FDR = 13.278
That means that the motor has to revolve 13.278 times for the wheels to revolve once.
Let's say we have a 3800 kilovolt motor running at 7.4 volts. The motor would be turning at (3800x7.4) = 28,120 RPM or rotations per minute. So, in one minute the motor will turn 28,120 times.
With a FDR of 13.278, the wheels will turn (28,120 / 13.278) = 2,117.79 times.
If we decrease the FDR by raising the number of teeth on the pinion gear by two, we get an FDR of (62/14)x2.57 = 11.38. This would mean that during the same minute that the motor turns 28,120 times, the wheels would turn 2,471 times, which is 353.2 times more often than with the smaller pinion gear.
Since the wheels are turning more often (and hence faster) during this minute, the motor is using more power (drawing more amps with the same amount of voltage). This causes the motor to get hotter, and your battery to drain sooner.
Craig
#2706
Tech Adept
iTrader: (1)
Joined: Jan 2011
Posts: 240
All depends on the track. With some of the top companies getting into 4x4 SC the amount of drivers goes up, which brings in some guys that could win driving a shoe box.
While at some tracks, like mine, where their seems to be a sponsored driver everywhere you look, the same people who've been in the class a while have been winning. Nothing has changed here. Same people up front. Losis and about two Hypers.
While at some tracks, like mine, where their seems to be a sponsored driver everywhere you look, the same people who've been in the class a while have been winning. Nothing has changed here. Same people up front. Losis and about two Hypers.
#2708
Tech Regular
iTrader: (6)
Joined: May 2011
Posts: 362
From: GreatWhiteNorth
That number is the number of times that the motor has to make a complete revoluotion for every revolution the tires turn.
For example, the SC10 4x4 has an internal transmission ratio of 2.57. If you were to use a 62 tooth spur gear and a 12 tooth pinion gear, the final drive ratio would be:
FDR = (spur / pinion) x Transmission Ratio
FDR = (62/12) x 2.57
FDR = 13.278
That means that the motor has to revolve 13.278 times for the wheels to revolve once.
Let's say we have a 3800 kilovolt motor running at 7.4 volts. The motor would be turning at (3800x7.4) = 28,120 RPM or rotations per minute. So, in one minute the motor will turn 28,120 times.
With a FDR of 13.278, the wheels will turn (28,120 / 13.278) = 2,117.79 times.
If we decrease the FDR by raising the number of teeth on the pinion gear by two, we get an FDR of (62/14)x2.57 = 11.38. This would mean that during the same minute that the motor turns 28,120 times, the wheels would turn 2,471 times, which is 353.2 times more often than with the smaller pinion gear.
Since the wheels are turning more often (and hence faster) during this minute, the motor is using more power (drawing more amps with the same amount of voltage). This causes the motor to get hotter, and your battery to drain sooner.
Craig
For example, the SC10 4x4 has an internal transmission ratio of 2.57. If you were to use a 62 tooth spur gear and a 12 tooth pinion gear, the final drive ratio would be:
FDR = (spur / pinion) x Transmission Ratio
FDR = (62/12) x 2.57
FDR = 13.278
That means that the motor has to revolve 13.278 times for the wheels to revolve once.
Let's say we have a 3800 kilovolt motor running at 7.4 volts. The motor would be turning at (3800x7.4) = 28,120 RPM or rotations per minute. So, in one minute the motor will turn 28,120 times.
With a FDR of 13.278, the wheels will turn (28,120 / 13.278) = 2,117.79 times.
If we decrease the FDR by raising the number of teeth on the pinion gear by two, we get an FDR of (62/14)x2.57 = 11.38. This would mean that during the same minute that the motor turns 28,120 times, the wheels would turn 2,471 times, which is 353.2 times more often than with the smaller pinion gear.
Since the wheels are turning more often (and hence faster) during this minute, the motor is using more power (drawing more amps with the same amount of voltage). This causes the motor to get hotter, and your battery to drain sooner.
Craig
#2709
I'm almost done with my swaybars. jammin hardware and some piano wire from the lhs. I just need to bend up the smaller wire i got (they only had standard sizes, got 1 size up and down from 2mm, acording to a caliper)
everything is fitting nicely. just making the bends match is a pita. I will post pics when I'm done.
everything is fitting nicely. just making the bends match is a pita. I will post pics when I'm done.
#2710
I'm almost done with my swaybars. jammin hardware and some piano wire from the lhs. I just need to bend up the smaller wire i got (they only had standard sizes, got 1 size up and down from 2mm, acording to a caliper)
everything is fitting nicely. just making the bends match is a pita. I will post pics when I'm done.
everything is fitting nicely. just making the bends match is a pita. I will post pics when I'm done.
Used the same hardware. Get the hardware here for less than $5. http://cgi.ebay.com/Ofna-Jammin-5-CR...item1e63f46fd4
Can definately tell a difference carrying more corner speed with (less than 2mm) sway bars. Definately need to refine my current setup since adding the roll bars but at least a step in the right direction
#2712
Tech Initiate
Joined: May 2011
Posts: 35
From: Dirty Jersey
I tried looking thru most of the posts in this thread but with 151 pages its tough to find exactly what your looking for.
I have an sc10 4x4 and have a few concerns;
Why does my truck make a loud high pitched whine under acceleration?
I have a tekin Rx8 Esc and the Tekin SC4X 550 5.5t, 62t spur and 12t pinion and the truck feels like a dog compared to most of the other trucks i see at the track? I used the hotwire to set up brakes and throttle to 100% and the truck seems brutally slow, so slow the owner at my lhs just took my DX3 tx and cranked the epa's to 150!?! I dont know if thats a good idea?
Can the slipper be so loose (mine is at 3.77mm) that im losing alot of power there? is a 12t pinion way to small the car tops out around 25-28 in the street? Is it a bad idea to set the epa's in the tx to 150?
or am i just such a noob I fail? lol
please do not hesitate to rip into me but please rip me with some accurate info please, im tired of looking at such a nice truck go so slow.
Thanks
I have an sc10 4x4 and have a few concerns;
Why does my truck make a loud high pitched whine under acceleration?
I have a tekin Rx8 Esc and the Tekin SC4X 550 5.5t, 62t spur and 12t pinion and the truck feels like a dog compared to most of the other trucks i see at the track? I used the hotwire to set up brakes and throttle to 100% and the truck seems brutally slow, so slow the owner at my lhs just took my DX3 tx and cranked the epa's to 150!?! I dont know if thats a good idea?
Can the slipper be so loose (mine is at 3.77mm) that im losing alot of power there? is a 12t pinion way to small the car tops out around 25-28 in the street? Is it a bad idea to set the epa's in the tx to 150?
or am i just such a noob I fail? lol
please do not hesitate to rip into me but please rip me with some accurate info please, im tired of looking at such a nice truck go so slow.
Thanks



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