Power in Flux

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SophieWillow replied to the thread Grunts are shipping.
" Yes, let me jump into it.
I think its quite interesting for one to just skip. "

23 Hours Ago

ejfitz clicked Likes for this post: New to EVs - looking for advice by Richard230

1 Day Ago

Richard230 replied to the thread New to EVs - looking for advice.
" Unfortunately, I can't help you with your build, but I can provide a picture of a 1964 Honda Superhawk and I will toss in an ad for the 1962 Honda model lineup. "

1 Day Ago

ejfitz created the thread New to EVs - looking for advice.
" Hi everyone, Iím new to the forum, but have done some looking around. I have 2 motorcycles that I want to build as EVs. One is a 1971 Honda CB350 and the other is a 1961?Honda Superhawk.

I have some experience with auto maintenance, but almost none in fabrication. Iím hoping I have some friends who would be able to help me out on that front though.

Ideally I would want to have it go 80-90 miles range and somewhere in the 45-55 mph range. Does this sound doable? And would anyone be able to give me advice on motors that would fit that?

Any info would be great! Thanks! "

2 Days Ago

ejfitz created the thread New to EV Builds - need advice.
" H "

2 Days Ago

Richard230 created the thread Ducati to take over MotoE World Cup races.
" Ducati has announced that they have entered into an agreement with Dorna to produce electric racing motorcycles (replacing the Energica brand) and to race them in the MotoE World Cup series. You can read about it here: https://www.motorcycle.com/mini-feat...g-in-2023.html "

4 Days Ago

Richard230 created the thread Kawasaki goes all-in for electric motorcycles.
" Kawasaki has done the H-D-thing and has spun off their motorcycle division from the parent company. The new division has big plans for introducing an entire range of electric motorcycles within the next few years. By 2035 they plan to produce only zero-emission vehicles. Here is the story as published by Motorcycle.com: https://www.motorcycle.com/features/...torcycles.html "

4 Days Ago

Richard230 created the thread Grunts are shipping.
" Volcon Grunts are shipping, soon to be followed by Runts, Stags and Beasts. Read about it here: https://www.revzilla.com/common-trea...o-ships-grunts "

1 Week Ago

Jan replied to the thread are electric twist throttles crap?.
" That seems to be exactly what I am looking for. "

2 Weeks Ago

Jan clicked Likes for this post: are electric twist throttles crap? by rfndzc

2 Weeks Ago

rfndzc replied to the thread are electric twist throttles crap?.
" I went with a cable-actuated throttle so I could keep the original CB controls on my old honda. It works great, although would like the return spring a bit stiffer. Took me forever to find this thing, but I knew someone had to be making it. Ended up finding it some random picture online and image searched the part. It turned up on aliexpress for less than 8 bucks. https://www.aliexpress.com/item/3295...33684c4dVU2uGE "

2 Weeks Ago

rfndzc replied to the thread 1972 Honda CB350F conversion.
"
Quote Originally Posted by Stevo View Post
You can use a standard bathroom scale, weigh each wheel separately, and just add the two. My local trash collection ecology center has a vehicle scale and the bathroom scale method checks out to work just fine. Im curious too to find out as well!!
sure, makes sense, I just don't have a scale. I'll keep it in mind if the opportunity presents itself and will post here. "

2 Weeks Ago

Stevo replied to the thread 1972 Honda CB350F conversion.
" You can use a standard bathroom scale, weigh each wheel separately, and just add the two. My local trash collection ecology center has a vehicle scale and the bathroom scale method checks out to work just fine. Im curious too to find out as well!! "

2 Weeks Ago

Jan replied to the thread are electric twist throttles crap?.
" Alright, I know it's a very old thread but I wonder if you have tried this one: https://www.miromax.lt/en/m-6/c-32/c...al#to_products
It looks very strange with the angled (I dont know what to call it) housing.
This is my project bike, a 1999 Husqvarna SM610

Attachment 8718 "

2 Weeks Ago

EVcycle replied to the thread A Real Noob from CT.
" Hello Jeff! (I am a old Ct person)
The bigger the better, More room for batteries. Find something with a fried ICE motor.
My work has been with NON hub motors. Done 120 mph with one.
I use Chevy Volt batteries. Lots of power and distance.

PM Sent!

Ed "

3 Weeks Ago

rfndzc replied to the thread 1972 Honda CB350F conversion.
"
Quote Originally Posted by jmmurphy26 View Post
This is my inspiration project, absolutely amazing! What are your thoughts on doing this on a 350 vs 450? I found a pretty cheap 450 that I"m eyeing up. Any sense of range from real-world riding? How much does the bike weigh? Great job!
hey thanks, glad you dig it. I think a 450 would do just fine. I like the gaiters on the 450, more of the scrambler look. This thing has been an absolute joy to ride. Accelerates like mad. I had originally engineered it for about 75 mi range with the batteries I had opted for, which were advertised as 100ah cells. It ended up being more like 50ah (the risks of buying through ali baba) probably due to refurbished cells (a couple of the cells are weaker and limit the rest of the system). In actuality I get almost exactly 40 mi range on a single 2.5 hr charge (from a 220v outlet through a 90v transformer/power supply) which is great for me as I'm only ever just around the city with it. I charge it 3-4 times a month. Happy to share any info, consider this project open source for whatever you can learn of it. Best of luck.

edit: haven't weighed it yet but I guessing maybe 35-50lbs lighter than before, so around 325-340lbs "

3 Weeks Ago

rfndzc clicked Likes for this post: 1972 Honda CB350F conversion by jmmurphy26

3 Weeks Ago

jmmurphy26 replied to the thread 1972 Honda CB350F conversion.
" This is my inspiration project, absolutely amazing! What are your thoughts on doing this on a 350 vs 450? I found a pretty cheap 450 that I"m eyeing up. Any sense of range from real-world riding? How much does the bike weigh? Great job! "

3 Weeks Ago

jmmurphy26 created the thread A Real Noob from CT.
" Hi all,

I'm located in central CT. I'm super new to the moto world, been focused on the human powered cycles for the last 15 years or so. I'm just now getting into motos and right away I've caught the bug for a DIY conversion of a 1970s CB-styled moto. I'm not crazy about cafe racers or anything, just like that style from when I was a kid in the late 80s. I'm trying to convince my co-worker to go first with his cruiser EV conversion project this winter so we can make all the mistakes on his ride. We will be leaning on our other coworker who has a full moto machine shop in his garage and builds bikes on the side.

I'm in the research mode right now and looking for a bit of guidance. I started off a bit grandiose - 75MPH top speed with 100 miles of range. Looking at what RFNDZC did with his CB350, those specs just don't seem like a plausible target. So I'm adjusting to a torque-y 55 MPH and range of 65-70miles (still a bit of a long shot it seems). I'm taking my queues from Theseus EV on YouTube, and the RGNT (among many others on EVAlbums). It looks like I'll want something like a 72V system with a 10-15KW continuous motor w/ 20-30KW peak. Trying to stay in the $3K project cost ballpark. Any suggestions are welcomed.

Here are some of my starting questions:
- How should I think about a CB350 vs. CB450 vs. CB750?
I get in the "real world" these are pretty different, but in the "EV world" is it just a matter of volume for battery placement?
Is there a weight penalty that I should consider here, or do added batteries make up for it, all else being equal (system voltage, battery types, etc.)?
I assume just go for what fits me, fits the budget and is in good enough shape, but wanted to double-check the logic
- I'm spying a low-cost CB450 but I noticed it has the single downtube rather than the "cradle", does this frame type make motor and battery mounting more difficult? I'm a noob after all, this is difficult enough for me.
- Has anyone put a level 2 J1772 charger plug in? I had leased a VW eGolf a few years back (what a car!) and I like the speed of the Level 2 charging so I can keep the ride going!
I'm trying to figure out how to do that with a moto vs. the conventional 110 plug I'm seeing a lot of. There are tons of level 2 chargers around CT now and Clipper Creek has the converter for the J1772-to-110 outlets that I could either use at home or keep in a pack.
- I was assuming a mid-drive motor, as I've never ridden anything with a hub motor before. The mid-drive reduces battery space, but keep the original aesthetic more intact. I assume "unsprung weight" isn't a huge deal at these speeds, but commentary welcomed.
- Lots of references to Leaf batteries on the forum. Initial research shows these are same price ballpark as LiFePo4 batteries - maybe 10-15% difference. Seems like the LiFePo4 batteries can take more abuse but there is a weight penalty.
Do Leaf cells really degrade quickly? Some videos were referencing needing to replace Lithium Ion packs in 3 years vs. 10-15 for a LiFePo4 pack, is that real or just a sales pitch?

I'm going to keep lingering around these threads and hope to get that winter project off the ground. With a little experience under my belt I will be in a better place to tackle all this imagineering I'm doing.
Thanks!
Jeff "

3 Weeks Ago

Jan replied to the thread RC lipo for my dirt bike build.
" Ok! So far I have decided to use 10 Leaf modules (or 8 or 12) and this motor:
https://www.miromax.lt/en/m-6/c-39/c...m3#to_products
I wonder if this controller is ok:
https://www.ebay.com/itm/12397150531...hoCbVoQAvD_BwE
I believe that it is a budget controller and that's exactly what I want, as a start, I cant afford a 1000€ controller now. It says 72V 400A and I will have 75V if I use 10 modules, will that destroy the controller?
I found a thread
https://endless-sphere.com/forums/viewtopic.php?t=99166
500A peak is a lot. "

3 Weeks Ago