as much as I love my carvons, I would recommend the sk3 for a single drive. I have had issues with the wires bettwen my speed controllers getting loose, and in tern, I lose power to one motor for a few seconds, and am riding on one motor. On one motor, the acceleration is practically non-existent. I can’t climb anything on one motor. With a belt pulley system, you can use gear reduction ratios (normally like 3 to 1) which allow you to get more torque, which is what you need to have a decent acceleration. However, I hate belt and pulleys, because they will break on you, alignment has to be absolutely perfect, and involves a lot more maintenance.
This is why I’m so interested in hummies motors. Right now, he has a deal on his for only $200 for two motors mounted on the trucks of your choice (great torque and top speed of 27 mph). The only problem, is you still need 2 esc’s, which aren’t cheap. 2x vesc from chaka, which is $360 total (not cheap, but the vesc in FOC is the best), and 4x3s batteries (to get 12s) for $120, a cheap gt2b controller for around $20, a knock off imax lipo charger for around $40, and you have your self a pretty good electrical system for around $740. Only this you would need is a board, which is around $50-$120, depending on what your looking for Then, you would have a top of the line board that would not disappoint. Or spend ~$500 for a board with way less torque, less top speed, and non stealthy. I made the mistake of spending too little. I know we all have budgets, but its easy to fall into the false economy of thinking you’ll get by with the cheapest stuff, when in reality, you get a fraction of the performance for little savings. Save up a little more if possible.
If not, sk3 with fvt 120 esc, 6s lipo, imax charger, gt2b controller are there for around $500. That’s your best bang for your buck IMO, but it will leave you wanting more.
The speed you want is usually done with a dual drive. Even my beefy enertion r-spec motor can’t break 18 mph on single motor setup with 6s. 12s might get me to 23 mph, but you’d need 2 motors to get you to 25 mph with ease. Other wise, you’ll reach those speeds only going down hills or with the sk3, maybe on a good strech of flat, but it won’t be instant power from 0-25 mph in a few seconds. My single drive r-spec can only do a measly 13 mph up hill on a 6s. 12s is better, but you need an esc that can do 12s, and those are all very expensive. the sk3 has a higher kv, which means you’ll get more speed than my r-spec, but at the price of torque, and toque is the key to high speeds up hill (even slight uphills). Double the motors means double the torque, and that’s why boards capable of 25 mph+ are usually dual drive setups.