Originally Posted by
wallacengineeri
Well the nice thing about the ProTek 170SBL Servo is its capable of 7.4V but the REALLY nice thing is its totally unnecessary. at 7.4V the torque hits nearly 550 oz-in with a transition rate of 0.01 less than 6V. My old Tessman edition 2274 Savox servo only put out 350 oz-in and that was at 7.4V. My old Serpent Cobra had astounding performance with that Savox, so just imagine the performance of the ProTek... It will perform better even on 6V, which means I can save voltage and amperage for use in the ESC and motor.
Ive had no issues ever with my Spektrum DX4C, why do you say that Spektrums aren't as good? I was interested in the DX5R for its 5.5 millisecond framerate which is compatible with the included receiver. I was also interested in the Swana/Airtronics MT-S but it comes with less features and less adjust-ability at a similar price point (looking around the $200 range). Not really interested in Futaba, I've seen way to many discussions with issues related to compatibility with Futabas and certain ESCs and telemetry, plus I really don't like the design all that much. The Kyosho Syncro Touch KT-432PT looks pretty nice but Ive never even met someone who uses a Kyosho radio and I think there is a reason for that...
Uh don't see why you would suggest EC5 connectors on a 1/8th scale. If you look it up they are only rated for 60 continuous and 120 burst amps, that's cutting it seriously close for an RX8 and T8 combo and could melt.
I too like the idea of direct soldering from the motor to the ESC and in fact had it like that on my old rig. However, I found it real inconvenient to have to pull the motor to get the ESC out to do cleaning. I don't have a compressor and don't want to have to buy canned air all the time, so my only option is rinsing. I know the T8 can take it but the RX8 cant, so...
And ya the RX8 waterproofing wont be used to like drive into lakes, just more for "splashes" in puddles and stuff. I agree with 2000Kv. The Serpent had the 2250Kv motor and its just way too much speed. Even geared down to a 14T pinion it would still hit about 50 MPH, who needs that kind of speed on a track?
I am starting to think the same way about racing vs. bashing. I may just build a separate bashing machine but that will take a while due to me not being rich lol. I was thinking about the Axial Yeti XL plus aluminum upgrades from Hot-Racing. Planning on a 4S Tekin setup for that as well, probably the same servo as well, just maybe the 1700Kv truggy motor for more torque and less speed?
Ive always run ec5 on my 1/8 gear and never had an issue, i run tekin gear also... even onroad 1/8 they use ec5 plugs and they dont desolder... deans on the other hand will. The plugs youre looking at appear to be 6s 1/8e plugs, bit excessive for 8th offroad, which has less constant draw compared to onroad.
Ive had issues with spektrum, and know alot of others have. Glitchy and cheap feeling. I went to futaba 4pksr after owning a dx4s and have not regretted it at all and have not had a single issue, nor heard or seen the issues youre talking about, and the people i know, majority run futaba, with some sanwa and very few spektrum. Each to their own on look, the futaba isnt the prettiest radio, but it feels good in hand and trumps the spektrum gear.
The more torque the better, less strain on the servo. 7.4v will be optimal, and wont tax the system as much as you think. Ive always run my servos on 7.4v and never had an issue.
Hard solder is best. Like i said, less resistance and less chance of a connector failing. It may be a bit more of a pain to remove, but atleast youre less likely to have a plug unsolder during a race or come undone.
I would stick to 2 rigs tbh. Best way to go about it. Throw a 1700kv into the Axial, doesnt even need to be Tekin, so you can keep the costs down as its only a basher rig.