Trampa Day Walker | NoWind Direct Drive | 12S6P 30Q

I’m a proud owner of the mini drive from Jens and I love it. I weight in at 70kg.

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Yea, really, I don’t think there’s any strength difference for the mini vs full… think I was just trying to keep the top speed down with reduction, and 8" tires…

But everyone does have good points about the weight…the deck, the drive…it will all add up…

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I’m also running 8" tyres. Top speed isn’t a priority for me. Falling down hurts too much.

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Yes, working on similar design to 1:3 mini drive train but with variable gear ratio for 107mm flywheels :wink:

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Yea… I fell a couple days ago and did a few rolls because I hit loose gravel on the road

Gotcha yeah… was just trying to keep it down 12s 5:1 130kv 200mm tires - 24mph 12s 5:1 170kv 165mm tires - 26mph 12s 5:1 170kv 200mm ties - 31mph 12s 4:1 130kv 200mm tires - 30mph 12s 4:1 170kv 165mm tires - 32mph

The parts I didn’t want to change - 12s as I already have bms and charger. I have both 130 and 170kv coming… What doesn’t get used here goes to another build…

Idk… Either way this is a full MTB build…I only want to be able to climb hills and jump… no street… So figured reduction is king in off road… My brain hurts lol

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I like your plan. This should be a sweet ride.

I don’t mean to try to steer the direction of your build (or maybe I do), but I like @Nowind’s mini drive suggestion, and the Holypro deck for weight savings alone. Since one of your main goals is to get airborne with this thing, and you’ve got a healthy budget, I think it would be really cool if you purposely built the lightest, most rugged, sealed drive, freestyle ESk8. Maybe even with a smaller, swappable low Ah, high C-rated Lipo pack for strictly jumping and “esk8 Park” riding? I’m envisioning this crazy powerful, near silent, bulletproof, helical direct drive board that can also be thrown around in the air with as little effort as possible. Kind of want to build one of my own now. Damn you @deckoz!! :face_with_symbols_over_mouth: :stuck_out_tongue_winking_eye:

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How fast do u think a 192kv on a 4:1 ratio would go?

@Deckoz I know kug has a DD kit and I want pneumatics, but lost my job and can’t really swing 500 plus shipping rn :confused:

Ya know… I’m normally not one to take suggestions in most of my projects, but I would be dumb not to take experiences of others, as I’m normally a “figure it out on my own” kinda guy…

Holy pro, and mini, and 165s making the board as light as possible is probably the right choice due to how much I weigh… And it’s supposed to go in the air…

Your also probably right about LIPO vs LiON… but I have the cells from nkon already…

Also your idea of a light board…dude have y’all watched Jens helical video :heart_eyes::heart_eyes::heart_eyes:

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I think you will be fine torque wise with 4:1 and 130kv. I’m about 100kg when riding with all the equipment and my board still pulls me up 40% hills (if you believe that we actually have those hills) no problem with 6374 encapsuled, so really only 6369, motors. If you pair this with the 165 tires you’ll be golden.

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Yeah I reckon this would be the dream set up @Deckoz. You’ve got me thinking about my next build now and I’ve not even properly finished this one!!! :joy:

I’d build your li-ion pack as you’ve got the parts ready to go but consider how you could switch it out for Lipo and freestyle where you’re only doing low km because you love the board the lighter it is. It seems the heavier it is the bigger your jump has to be and the faster you have to hit it. I’d love to see an electric mountainboard light enough that you could 360 it from stand still. I can almost do it on mine…might try it without batteries to see if it makes a difference…hmmmmm I’ll try it out tonight as that would be a good test of weight difference! Not the most scientific obviously :sweat_smile:

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Pleeeease guys don’t make me think of that I also need a light strictly freestyle board, I hate you :rofl:

That sounds good. AFAIK these 6.5inch tires are more for street and hard surfaces. If you ride offrad you need more grip that’s why I would suggest 8" offroad tires, also the size is better for any obstacle. And for your calculations, the 8" tires are mostly about 190mm and not 200mm.

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I know right. I keep thinking I have an extra set of wheels and batteries already, all I need is… 2k later :sweat_smile:

Really looking forward to seeing how this build comes out though. Been a blast watching your guys’ jumping videos :smiley:

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So…

I took everyone’s advice, to try to make the build as light as possible.

Ordered:

  • Mini Direct Drive in Blue with Helicals ordered!
  • APS Motors
  • MBS Foot and Heel Straps

Just need to complete with @trampa for and @Kug3lis in the next week’s. Parts should start rolling in soon.

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I have some of kugies hubs coming, because why the f#$k not? :crazy_face: Doing the f5’s too though :money_mouth_face: I’m going lipos though :neutral_face: light weight punch, and I like to just velcro everything to the mid deck JensoBro style…

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I really want to… But I haven’t made myself lean one way or the other…as if I did the weight I saved on the mini vs full DD would be right back in wheels…

Decisions are so hard… lol

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& performance wise rotational weight will have a bigger impact on acceleration, but like with motocross, sometimes they add weight to the flywheel to improve traction, I think I am adding weight that will add speed through traction… time will tell :thinking: my scorpions punch :facepunch:

software solutions are great, but sometimes the mechanical answer is hard to beat… ie. big chunck of glass on the front of a lens…

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Yea. I’ve used different weight flywheels on my time attack cars. To get the hookupand engagement feeling right. But not a hot swap switch lol

Either way…I think seeing if the superstars put up with my tiny self…is worth it… as going with the mini, staying on superstars (for now), and using a holy pro… Is probably about 4lbs(~2kg) saved…

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Oh man that sounds awesome. Don’t laugh but I hacked together a quick 3 wheel eMTB from a tossed out scooter I found and have been having a blast kicking it around. It’s a stupid brushed motor so no fancy vesc or wireless throttle for me just yet but it’s definitely got me interested in a 4 wheeled brushless beast.

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