Recent content by RacerDad22

Yea- over 100VDC the options open up. My motor will likely overheat. I'll be monitoring. I saw another group /YouTube vid with guys using some sort of 100+ VDC MOTOR. their batt solution- a boat load of like makita cordless 36v batts. Looks like they had big parallel banks for amps, then...

finding a good, powerful, yet cheep for project build DC motor wasnt easy (at least for me). you get your 750-1000W scooter/wheel chair motors sure -but after that, the price goes way up for anything with power. this motor is a $60 junk yard find. its a starter motor off of an excavator...

All great ideas, and I'm not sold my method is the best. At this point, I think I need to get to dual motors under controller driven state and test. I've modified my controller code now to do mode maps- or select throttle mapping. Elec only, gas only, basic transition, and earlier intro of...

Jack- you're 100% right on goal. Being as I don't have proper power curves for each motor- this is my system of guessing. I need to do measurements next, but made up numbers- if my elec does max 3K rpm, I'll figure its effectiveness drops off at say 2500. Then based on gear ratio and wheel...

It has a pause! Next step- hook arduino controller up for measuring, then go drive by wire, then install 2nd gas motor. Baby steps.

That is a completely different way to approach it, but I get the concept - that's a nifty way to look at it!. I'll check your project in more detail - seems like you're tinkering down a similar path...At this point, I think I am "done" on theory enough to plug stuff up and see what the heck...

wow - you guys are on point! love this forum :) yes, I am using a centrifugal on elec, and gas. not sure if that is best, but the elec motor is massively "torquey" and takes a fair amount of force to turn over. I am starting with it on centif so I can take the drag of spinning that motor...

The difference in torque characteristics the reason for the build :) I don't know actual mph- but let's throw a dart at it for example- 0-25mph elec motor only, gas idling/freewheeling 26-30mph - both motors going 31 mph+ elec off/freewheel, gas motor only I'm thinking the torque of the gas...

Fiddle box might be the way. I think I have OK guesses on mapping- fiddling will show clearly how wrong I am :) Engineer- that's an option, but two things- hard to do without proper dyno and my goal is not "max power all the time", but rather avoid clunky transitions during motor change overs...

hey all - ive built an big amp DC electric kart, and want to add a gas motor for secondary drive. not going serial hybrid - I want both to be drive motors. I've written controller code (can link to it if anyone wants) - but the problem is not the code - its how to map the transition of...

Ok. Thx, I see some external forums on topic, none here. One step closer.. Peace.

hey all- I've built a elec go kart using a 24v source, PMC high amp speed controller, and massive 24v excavator starter motor. Fun stuff. I want to make it gas/hybrid. I'm not going to lay out all the challenges- but I do need help on building a buy list for micro controllers/sensors etc. I...