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  1. j bjork

    [USA] Will Tariffs come about and lead to higher priced ebike parts

    It is an interesting question, I think last time USA raised the tariff on China Europe more or less followed. I dont think that will be the case now, but who knows what will happen when big companies will start to go bankrupt? The European car manufactures where already in crisis, before all this.
  2. j bjork

    What unreasonable demands are the US making to 'resolve' tariffs for your country

    It has been rather silent here about possible ways out of the tariff game, I dont think there has been any real suggestions in what we could do. And now the idiot stands and mocks the countries that have tried to negotiate or smaller countries with weak economies begging him not to crush them...
  3. j bjork

    Yamaha YZ450F

    Finishing the mold: The trench was a problem. I thought as it was such a small molding I would have plenty of time to go back and forth pushing the fiberglass down. And I did, but I didnt think it would move back as much as it did every time. However, I think it ended up alright. Time to...
  4. j bjork

    Telsa finally gets competition - Longbow Roadster

    That sounds very strange. I look at a list here about ev sales 2024, BYD Atto 3 are on place 46 and sold 306 cars. That is 0,32% of the market. Tesla model Y is number 1 with 18293 cars and 19.39%. Number 2 is volvo EX30 with 7100 cars and 7.53%. That has changed quite a lot this year though, I...
  5. j bjork

    Yamaha YZ450F

    Yes, I think the connector is higo. It comes with 2meter wiring: I just checked what it has cost me: 1621 sek purchase, then 639 sek taxes in the customs. So about 2250 sek, and I actually checked that it translates to 210 euro or 227 dollar :) So maybe not the most expensive, but far from...
  6. j bjork

    75 Rupp Centaur

    It sounds like you havent bought anything yet, so this might be interesting: https://endless-sphere.com/sphere/threads/new-in-box-qs180-90h-and-fardriver-nd961200b-direct-from-qsmotor.127012/ With a more suitable controller, even if I personally would have went for a 961800..
  7. j bjork

    75 Rupp Centaur

    I think the motor is probably a good choice, but I'm not so sure about the rest. It dosent matter how capable motor you have, if you dont feed it. It takes phase amps to make torque, if your controller only is capable of 580pA you wont get very much torque. You should have a controller capable...
  8. j bjork

    75 Rupp Centaur

    I dont know if it is something different, but usually fardrivers numbers means phase amps. If it is 580pA, then it is not really interesting for this motor. You should have something with over 1000pA, like a nd961800 or someting similar. And 72V is also limiting performance. I cant say for...
  9. j bjork

    Yamaha YZ450F

    If I got that right you mean I should add that to this part of the mold? Then I end up with resin in a relatively thin line in the mold instead of gelcoat if I understand correctly. I tested to grind down the edge of the trench instead: I think it turned out pretty good, I dont think I have...
  10. j bjork

    off-road braking method

    From what I remember you are only able to have regen on throttle release or when you activare a (digital) input on the controller with fardriver. So you cant regulate, it is just a fixed value you set. Nothing that you can use instead of mechanical brakes. Hi or low usually means that they are...
  11. j bjork

    Yamaha YZ450F

    Broke off the bottom cardboard: Cleaned up and cut off the extra fiberglass: Now I have this trench where the clay was: I would have liked a sharp and clean 90 degree bend, this might be a problem. It will mostly be gelcoat filling this trench, and there is a risk that pieces of gelcoat...
  12. j bjork

    Telsa finally gets competition - Longbow Roadster

    Dont you have BYD in USA? We have them and a few more here, no big sellers though. I think MAXUS have sold pretty good of their vans.
  13. j bjork

    Yamaha YZ450F

    Alright, time will tell:
  14. j bjork

    Yamaha YZ450F

    The cardboard is not a problem, I use that all the time when I want to add a little extra length to a model. There is a layer of cardboard in the bottom, then those with tape on sits on top of that shaped to fit the sides of the model. That way the split ends up just over the radius, but I dont...
  15. j bjork

    Yamaha YZ450F

    Continuing the endless work on the model/plug: I have to make a split mold, as I wont be able to get the part out otherwise. A problem then is to get a clean split, so I tried to make it without tape on the model. But I think it isn't tight enough, I will get gelcoat in the slot. I ended...
  16. j bjork

    DIY (Mini) ebike/moped -> square tube frame, hoverboard motors - does this look reasonable? Any obvious oversights?

    It looks like this: I dont know, but I guess it is from a scooter. Just a rough estimate would be about 150-160mm between the dropouts. Jag tror det var ungefär 150mm mellan de övre benen och 160mm mellan de nedre. 12" hjul
  17. j bjork

    new type motor/generator

    I think "Motor Technoligy" would be the best choice.
  18. j bjork

    DIY (Mini) ebike/moped -> square tube frame, hoverboard motors - does this look reasonable? Any obvious oversights?

    I think I have a fork that would work for you. It would be cheap if you are close enough to pick it up ;)
  19. j bjork

    PWD's Yamaha XV250 Virago build

    Interesting test, is it the 72Ah model from earlier in the thread? 6c discharge =432A, max peak 10c. You dont get any swelling when you discharge hard like that? Maybe you could try to put some pressure on it and see if that makes any differense. Also try higher temp, 30-40 degrees c maybe.
  20. j bjork

    Yamaha YZ250F

    Yesterday when I was riding I broke the front fender instead: That's unusual, I have only broke one before when I rammed some trees.. The bike stopped ones for me, and wouldn't start until I stopped and stood there for several seconds. It also didn't start up very good at first. At first I...
  21. j bjork

    Yamaha YZ450F

    Primer and more sanding.. I think it turned out pretty good. White was probably not the best choice as I plan to use white gelcoat in the mold. Maybe I should try mixing in a little black to get grey gelcoat 🤔
  22. j bjork

    Telsa finally gets competition - Longbow Roadster

    I dont think teslas problems (here at least) has much to do with their self driving systems, or any other system for that matter. I think it is all about Elon, or possibly teslas policys (that I think is Elon) There has been a conflict with the union here for over a year I think, because tesla...
  23. j bjork

    FYI - official VESC display is finally for sale

    I think it has been available for a while? Anyway, I would have liked a little more info about what it has and hasn't but I took a chance and ordered one.
  24. j bjork

    2008 CRF250R - QS138v3 70H - ANT - Sanyo UR18650-RX 20s20p - Votol EM260

    You know this is not where you just show pictures and say "I built this" (there are facebook and other places for that) This is where you show HOW you built it :rolleyes:
  25. j bjork

    Yamaha YZ450F

    Finally I am calling it finished: More than a few hours so far, and it is just the basic shape that is finished. Now it is time to start rounding edges and paint :rolleyes:
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