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Discussion Starter · #1 ·
This came up from a discussion on building a powered sidecar rid, like a Ural 2WD, using a shaftdrive motorcycle a little more reliable than a Ural (like a Suzuki, Honda, etc..) So lots of limiting factors like, shaft drive on the right side, big enough for a sidecar, etc...
As we through around crazy ideas one actually looked like it might work and open up the options; a EV sidecar. Basically instead of having a drive shaft run the sidecar wheel you supplied the sidecar with electricity from the bike as you drive. I am thinking you wouldn't need a huge battery because the bike is doing the heavy lifting. I was thinking capacitors for fast rebound and a small battery pack for storage. So a motorcycle hybrid essentially...
And that is where it all stops I have no idea how much electricity would need to be supplied from the bike to make this viable. I seen some demonstrations with Ebikes using capacitors for brief spurts of power. I would imagine the stater would need an upgrade lol...
This idea is more for a toy as opposed to a practical transportation solution just wondering how possible would it be and what you would need to consider.
 

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Discussion Starter · #3 ·
Yeah but how do I figure out what kind of load to expect on the motor? and thus how much electrical power the bike should be producing? In this setup would capacitors make sense where there is a constant supply of power varying amounts of draw (like how you would setup a big car stereo only bigger)?
 

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I like weird ideas, and I like this one.

The 2 big challenges that kind of made me give up on my electric motorbike were:

1 - No matter what you're going to have a very short range, can't really enjoy a trip anywhere, and

2 - Even for the range you have, there's nowhere good to put the batteries.

But as Remy points out, floor of the sidecar is perfect. If you want it to be electric, just drive around with the empty sidecar EV. If you run out of range, no problem start up the ordinary gas powered motorbike. If you want to go somewhere without the EV, ditch the sidecar at home.

Gives up the sporty part of a motorbike, and, I guess at that point you're just driving a really terrible and uncomfotable convertible with no cargo space but... hmm... I did decide to save my batteries for an EV car instead.
 

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Discussion Starter · #6 ·
I was actually thinking the gas motor would charge the batteries and the electric motor would kick in to assist in 2wd drive mod. I did some digging and very expensive it is better to build a gas setup or a ev setup.
That said, the Goldwing chassis can hold quite a lot of batteries, the sidecar could carry additional batteries to get some range. My thoughts have diverged into a EV sidecar setup where the batteries are split between sidecar and bike, solo bike is for commuting, sidecar and bike for trips. The sidecar should have the CSS charger hookup in it and maybe the bike just has 110v 240v because if I am just using the bike I am not going far.
I'm not sure what size motor this should have, a Ural has 30kw/50Nm and the Goldwing 60kw/90Nm, not sure what that translates into for a EV motor. Some people like the youtuber High Voltage go nuts with their engine choice, or others tend to put a motor just big enough to go to the grocery. There has got to be a middle ground; is an AC9 good enough for a 330kg bike and up to 100kg sidecar?
 
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