Speed Passion Thread
#1217
Ok, I have a question. I ran my car for the first time today, big track 19 second laps.
My SA2, running pretty much standard settings all day, last qualifier uped the DDRS, and timing two knotches. Car didnt really get faster, but, I could have been wrong. My car has a 1700kv Tekin, (waiting on the new SP stuff), spur gear is 48/18. Motor is warm, speedo is cold, and came off the track at the end of the main, 12 min with 15.00v left in the pack. I did win, but by far one of the slower cars in speed, but completely drivable.. I think I can gear higher.? LVC is cut off @ 3.0. So my interpertation of the the LVC I can go down to 12.00v? Will it be good. All in all I was very happy with the performance all day, it only got better. I know Im not running a 2050, or 1900 so the snap isnt there, but RPMS should be close... Anyone can help please?
Howard, ETA on the new SP 1/8 motors, or the Reventons?
My SA2, running pretty much standard settings all day, last qualifier uped the DDRS, and timing two knotches. Car didnt really get faster, but, I could have been wrong. My car has a 1700kv Tekin, (waiting on the new SP stuff), spur gear is 48/18. Motor is warm, speedo is cold, and came off the track at the end of the main, 12 min with 15.00v left in the pack. I did win, but by far one of the slower cars in speed, but completely drivable.. I think I can gear higher.? LVC is cut off @ 3.0. So my interpertation of the the LVC I can go down to 12.00v? Will it be good. All in all I was very happy with the performance all day, it only got better. I know Im not running a 2050, or 1900 so the snap isnt there, but RPMS should be close... Anyone can help please?
Howard, ETA on the new SP 1/8 motors, or the Reventons?
Since the vehicle you are running has that 4.3 diff ratio and you are running on 4S, using this chart:
http://scriptasylum.com/rc_speed/top_speed.html
and these settings:
- 14.8V Battery Voltage
- Tekin 1700Kv motor at 1780Kv rating
- Proline Holeshot tires 4.1 diameter
Your estimated top speed was only about 28 miles per hour.
I would say to get up to the more common gearing range of 35mph to 40mph, you need to go up in your pinion tooth count significantly.
I personally would look into using the Lightning 44T Spur gear or 46T spur gear or you can do the Kyosho nylon spur gear mod and run there 44T spur gear like I do and then you don't need to go up as high on the pinion tooth count. A higher Kv motor though would be more ideal on 4S.
I would also run your cutoff rating at 3.2V per cell at a minimum to get better life out of your batteries. I personally run 3.3V myself.
#1218
Whats the deal with the Reventon series Speed Controllers?? First were supposed to be late march, Then mid april, now we dont even hear anything about them? Are they coming soon since HobbyWing has released their V3??
#1220
I been wondering the same thing......pre ordered mine months ago, and nothing
#1221
Joined: Sep 2002
Posts: 7,350
From: Greenvill, NC
What motor? Truck, and gear? Also software? My truck flies , GT 2.0 w 4400kv SP.
#1223
Joined: Sep 2002
Posts: 7,350
From: Greenvill, NC
It's a no go for 4wd(Dex410). Lpf has different construction than the pro.
#1224
I don't recommend 5.5T for 4wd buggy or boost. I wouldn't do anything lower than 7.5T for 4wd.
#1225
I would say try gearing up first depending on where you are topping out down the longest straight. Your temps though look easily in the range where you could go up on your pinion gear.
#1227
Joined: Sep 2002
Posts: 7,350
From: Greenvill, NC



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