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    1979 Yamaha XS750 conversion.

    This is the one I ordered. https://www.aliexpress.com/item/32826469363.html (note that you have to order the board and the screen if you want it separately) Sorry for taking a while to respond. Lately I have been really busy. I can't comment on it's ability to actually do 300A, since I have...
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    1979 Yamaha XS750 conversion.

    Thanks! I got the BMS on aliexpress. I can link to the seller later if you want. The Domino looks great, but it is pretty pricey. I went with a spring loaded box with a hall sensor that connects to the stock throttle cable, but if I feel like it isn't good enough, I think that is the throttle I...
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    1979 Yamaha XS750 conversion.

    I hope it is. Thanks for your feedback, in your position I would be concerned as well. I appreciate feedback as to potential pitfalls I may be walking into in regards to safety. I am pretty new to designing things to be made out of metal, and this will be my first custom motorcycle project.
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    1979 Yamaha XS750 conversion.

    If you mean for me to chop the swingarm, that is not really feasible because it stops being a square tube. If I were to cut it down, my adapter would no longer fit into the swingarm. I am trying to avoid any welding if possible. If this swingarm does not work out, I will probably just have to...
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    1979 Yamaha XS750 conversion.

    That cut-out on the back of the bracket is to hold the hardened steel torque arm that came included with my motor: I ran some static analysis on it in fusion 360, assuming the maximum rated stall torque, and it did not show any damage. (the warping of the part is exaggerated to allow for ease...
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    1979 Yamaha XS750 conversion.

    Over the past few weeks, I have made some more progress. I mounted most of the components in a temporary fashion:
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    1979 Yamaha XS750 conversion.

    I Hi Rovii! Yes, mounting the motor was an interesting challenge because I cannot slide the axle into my swingarm. Instead, I designed some adaptors in Fusion 360 and 3D printed them to check fit: With these, I can attach them to the hub motor, then slide it into the swingarm and bolt...
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    1979 Yamaha XS750 conversion.

    UPDATE DUMP Sorry for the delay, the fires around me (Oregon) have made things hectic. Anyway, (Sorry if you cannot access imgur for some reason, I will come back and edit this post and embed the images directly later, but I don't remember how to do that right now) Here are some photos of...
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    1979 Yamaha XS750 conversion.

    I know it has been a while, but I am posting an update, albiet a short one. My motor should finally be coming in next week. (after I got hit with 250 dollars in import fees... Ouch) I plan to post a lot of pictures of the motor, and as soon as I have time to, I will be testing the motor...
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    1979 Yamaha XS750 conversion.

    I am glad to see others converting old motorcycles. I would love to see the cad files you mentioned, even if they do not work for my swingarm, they could provide inspiration for me on my build. Did you make a thread on here for your motorcycle project? I would love to see some photos. The...
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    1979 Yamaha XS750 conversion.

    The motor is a hub motor, so there is no advantage there, but a lower center of gravity is always better. I will move it around some more to see what the best position would be.
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    1979 Yamaha XS750 conversion.

    Also, here are some pictures showing a cardboard mockup that is the size of my battery floating around in my frame. I'll need to make a box for this to sit in, but this looks promising so far.
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    1979 Yamaha XS750 conversion.

    Nobody local had anything available, so i ordered a Yamaha fazer swingarm. I hope it fits. Some other conversions from shaft to chain for the xs750 used this swingarm, so fingers crossed that it will not require much modification. We'll see. It should get here pretty quick, it is only going...
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    1979 Yamaha XS750 conversion.

    Interesting. I used imgur. I will edit my post and try to change that. Edit: Completed
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    1979 Yamaha XS750 conversion.

    I have been contacting a few suppliers from china about getting brake parts that will fit. I will post here with some more info when I have confirmed a fit. But now for those other photos I promised earlier! Here is a picture from the day I picked it up: I fitted one leaf module various ways...
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    1979 Yamaha XS750 conversion.

    I had considered using a throttle setup like that, but I have (possibly unfounded?) reliability concerns because the stock throttle is not dual cable. This is the motor: https://www.qsmotor.com/product/17-inch-12kw-hub-motor/ I don't have a model number. For variable regen, I plan to use some...
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    1979 Yamaha XS750 conversion.

    Alright, lets get this thread started. I recently acquired the aforementioned XS750 I will add pictures later this week. I have ordered the following parts: 17" by 6" 12kw rear hub motor from qsmotor (configured for 145kph) 300a ANT bms with screen. Kelly KLS96601-8080I A 220v charger for 96v...
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    Chinese E-Vader/E-Grom/E-Monkey

    Well that was short lived. My order got cancelled and the vendor no longer lists the bike for sale. I decided to go ahead on my 1979 yamaha xs750 conversion with a 12kw hub motor. Ill make a different post about it.
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    No Throttle response on Egrom when Overvolt

    The fuse is not redundant. The models with no fuse really should have one. It is there in case there is a short-circuit condition.
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    E-Grom Clone 72v battery upgrade recommendations -Update bought a Leaf Pack

    I just ordered one of these (the grom clone) and I already have a pile of leaf batteries. I am planning to do this same upgrade when it gets here to get better range than stock. Did you ever get anywhere with this upgrade?
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    Chinese E-Vader/E-Grom/E-Monkey

    I just purchased one of those Chinese 2000W mini bikes that go by various names such as "E-Vader" or "E-Grom" or "E-Monkey". The one I ordered claims to have LifePo4 batteries rather than the normal lead acid ones. I plan to do a very detailed review of the unit, and post a lot of the...
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