If you get a down converter for a 12 volt system get one capable of 30A@12vdc. I got a 10A version and found that it would not honk my dual car horns. The converter does not really use a lot of the high voltage power but is there if you need for horns or high beams.
yay I've been waiting for this! :D I got a 750cc bike so it's got pleeeeenty of room for batteries and motor, maybe even a little space left over for cargo.
My son has a KTM 250 SX-F dirt bike and one of his buddies brought his 72-volt 3000-watt bike over that his dad built. As they were unloading it his dad told me that it was okay for my son to ride it but to please be sure he could handle the power. I said to hang around a minute, and I would get my sons bike out for his son to ride to do a comparison on power before he left. Needless to say, that after his son made a lap on my sons KTM that he told his dad to sell the electric toy and buy him a gas-powered bike.
The 2024 KTM 250 SX-F has 42.8 horsepower (hp) and 19.8 pound-feet (lb.-ft.) of torque from its fuel-injected liquid-cooled DOHC four-stroke 250cc single-cylinder engine. What kind of motor and battery setup would you suggest I tell him to get for a rematch?
@@timothyallbritton1961 that’s pretty impressive out of a 250cc! He should get the qs motor 8000w mid drive and put 200a @72v. That would be a little over 20hp (16,000w) but would definitely be closer in performance. 3,000w is not enough for a motorcycle unless you have a gearbox. Even then it better be a lightweight frame.
@@JohnnyNerdOut I appreciate you responding. I sent your response over to my friend Rob. He is really into the electric bike scene but unfortunately rarely gets online. I told him to get on RU-vid and to follow you as well. Thanks again :)
@@JohnnyNerdOut Wow he called and checked on the motor you told us about and it weighs over 47 lbs. My sons KTM and his sons converted Honda are both 250-CC. That motor weighs as much as the rest of the motorcycle :)
Only thing that confuses me is why the chainring is small and the sprocket on the wheel is large.. wouldn't it go faster if it was the other way around?
In theory it would have more top speed that way but less acceleration. But in reality if it was reversed, it would have NO acceleration and would probably overheat before hitting max speed ☹️
Is there any resource where you can find straight forward instructions telling you exactly which parts you need and how you need to connect everything? I'm good with petrol bikes but I know nothing about ebikes and would like to build one as well.
@@prophetzarquon1922 I have a class three electric bicycle. Sorry, yes it is confusing sometimes to clear up the naming confusion. I would like to try converting a motorcycle to electric that's capable of highway speeds
@JohnnyNerdOut thank you! I'm new to the ebike thing. I have and ssr189 dirtbike just sitting around with a blown engine. I think going to electric would be cool. I'm doing my research now. Thanks!!
