Planning a Vespa conversion

[vdubjim]

Shipment was delayed due to Corona.

It just arrived!

Of course pics won't load. Nice.

 

[vdubjim]

 

[vdubjim]

 

[vdubjim]

 

[tylerwatts]

That looks like a lot of motor! Going to be great fun.

Cheers
Tyler

 

[vdubjim]

That's my hope.

That looks like a lot of motor! Going to be great fun.

Cheers
Tyler

 

[vdubjim]

Got more time today.
Cutting the ugly off.
Will clean it up later.

 

[samv76]

they sell complete kits for this

https://www.retrospectivescooters.com/for-sale/project-e-electric-vespa-conversion

 

[vdubjim]

You definitely haven't checked prices lol.
And they won't sell their swingarm separately

they sell complete kits for this

https://www.retrospectivescooters.com/for-sale/project-e-electric-vespa-conversion

 

[samv76]

hahaha you noticed their prices huh :lol:

 

[vdubjim]

Hence this post

hahaha you noticed their prices huh :lol:

 

[vdubjim]

Been a while. Crazy busy.
Grinded the ugly off.

 

[JimVonBaden]

What bike is that swingarm off? Do you have the dimensions, width of the connector to the bike, length of the arms?

I'm very interesting in this as I am building a 1980 PX, and want to convert it to electric.





Thanks,

Jim 8)

 

[vdubjim]

Won't work for largeframe and I'm not sure I'll be able to work it on mine due to the giant axle size of this motor.

 

[JimVonBaden]

Won't work for largeframe and I'm not sure I'll be able to work it on mine due to the giant axle size of this motor.

Thanks. The search continues for a MC swingarm I can repurpose. Fortunately I can weld, but I would rather not build one from scratch.

Jim 8)

 

[vdubjim]

Same thing here.
Largeframe id think about grom, China pitbikes etc.

 

[vdubjim]

That swingarm was too narrow for this big hub motor, def useful though for smaller.

 

[JimVonBaden]

I just ended up making one. I couldn't find one that would work and be strong enough for single sided. The two shock swingarm makes it super tight.






Another guy did this:

 

[vdubjim]

I've seen a few, the one on my first page is amazing, of course they won't sell it without the $2k+ kit lol

 

[JimVonBaden]

I've seen a few, the one on my first page is amazing, of course they won't sell it without the $2k+ kit lol

Same here. I would have preferred to pay $400 versus the 3 8 hour days of work to design and build mine.

 

[vdubjim]

Ya I don't understand companies, want to make some money or NO money? Ok ok.

 

[blurdvizion]

I ended purchasing a swing arm for a monkey bike.

US $120.00 | Motorcycle Aluminum Swingarm Rear Flat Frame(52cm Length) For M3 M5 Monkey Bike Honda Yamaha Kawasaki Suzuki Modify
https://star.aliexpress.com/share/share.htm?image=U2ba65c6d838040d6b3fe133076dea369n.jpg&businessType=ProductDetail&title=US%20%24120.00%20%7C%20Motorcycle%20Aluminum%20Swingarm%20Rear%20Flat%20Frame%2852cm%20Length%29%20For%20M3%20M5%20Monkey%20Bike%20Honda%20Yamaha%20Kawasaki%20Suzuki%20Modify&platform=AE&redirectUrl=https%3A%2F%2Fwww.aliexpress.com%2Fitem%2F32847256596.html%3F%26srcSns%3Dsns_Copy%26tid%3Dwhite_backgroup_101%26mb%3DB4RGl1vzAx6WVYk


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[vdubjim]

Looks nice, do many mods to it?

I ended purchasing a swing arm for a monkey bike.

US $120.00 | Motorcycle Aluminum Swingarm Rear Flat Frame(52cm Length) For M3 M5 Monkey Bike Honda Yamaha Kawasaki Suzuki Modify
https://star.aliexpress.com/share/share.htm?image=U2ba65c6d838040d6b3fe133076dea369n.jpg&businessType=ProductDetail&title=US%20%24120.00%20%7C%20Motorcycle%20Aluminum%20Swingarm%20Rear%20Flat%20Frame%2852cm%20Length%29%20For%20M3%20M5%20Monkey%20Bike%20Honda%20Yamaha%20Kawasaki%20Suzuki%20Modify&platform=AE&redirectUrl=https%3A%2F%2Fwww.aliexpress.com%2Fitem%2F32847256596.html%3F%26srcSns%3Dsns_Copy%26tid%3Dwhite_backgroup_101%26mb%3DB4RGl1vzAx6WVYk


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[JimVonBaden]

I ended purchasing a swing arm for a monkey bike.

US $120.00 | Motorcycle Aluminum Swingarm Rear Flat Frame(52cm Length) For M3 M5 Monkey Bike Honda Yamaha Kawasaki Suzuki Modify
https://star.aliexpress.com/share/share.htm?image=U2ba65c6d838040d6b3fe133076dea369n.jpg&businessType=ProductDetail&title=US%20%24120.00%20%7C%20Motorcycle%20Aluminum%20Swingarm%20Rear%20Flat%20Frame%2852cm%20Length%29%20For%20M3%20M5%20Monkey%20Bike%20Honda%20Yamaha%20Kawasaki%20Suzuki%20Modify&platform=AE&redirectUrl=https%3A%2F%2Fwww.aliexpress.com%2Fitem%2F32847256596.html%3F%26srcSns%3Dsns_Copy%26tid%3Dwhite_backgroup_101%26mb%3DB4RGl1vzAx6WVYk


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The tricky part is that a Vespa can't use a center monoshock swingarm. It is best if it is a single sided monoshock. It needs 210mm wide swing mount point, and a 200mm dropout, and can't exceed 330mm mount to dropout point. I scoured Aliexpress, and Google images for a close enough match. I came up short.

In my opinion, the swingarm is the number one PITA of this conversion. I'll take a photo and full measurements of my final swingarm tomorrow.

 

[blurdvizion]

I didn’t realize the issue with the center mount. I’m going to go through a similar issue in my ruck build, but I’m planning to convert to a center shock mount.


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