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  Topic Review (Newest First)
10-07-2019 04:29 PM
architeuthis I saw Seth's Spider at Novato Cars and Coffee on Sunday and it is gorgeous!!!
09-05-2019 11:28 AM
Elmolino
Quote:
Originally Posted by CohoQuad View Post
Looks fantastic! What do you think the total cost of the gas/electric conversion ended up being?
Dan
The EV conversion parts were about $13k.

Hyper 9 Motor - $4500
Used Leaf Batteries - $2500
Charger/BMS - $1500
Adaptor Plate/Connecting Hub machining $1500

The rest is wiring, small bits, hardware, water-jet etc.
09-05-2019 10:50 AM
Alfajay
Quote:
Originally Posted by Elmolino View Post
The best solution for increased range would be to use Tesla Model s modules. They are the most power-dense batteries available for EVs. For the same battery weight as the Leaf, I could probably go 100-150 miles on a charge. The problem is that they are expensive and they require a cooling system. Tesla batteries are much more volatile than the leaf because they use a different battery chemistry.
OK, got it. Thanks for the explanation. I can understand how both cost, and the complexity of a cooling system, would mitigate against using Tesla-type batteries.
09-05-2019 10:10 AM
Elmolino
Quote:
Originally Posted by Alfajay View Post
Congratulations on a very well-done job. Must be satisfying to finally be driving it.

What accounts for the range difference between this car and factory-built EV (e.g., Leaf, Tesla)? Is it the challenge of packing enough batteries into a chassis that was never designed to accommodate them? If cost wasn't an issue, could you have put more batteries into the spider?
In my case, the range is effected by several modules with a lower amp-hour capacity. Leaf modules tend to degrade faster than other battery systems. So it is likely that a few of my batteries have come from a higher mileage car. Lithium batteries can generally be discharged to 20% capacity without damaging themselves, but as they go through cycles, the time it takes to reach that point becomes shorter.

It is exactly like an older cell phone that has been through many charging cycles; it goes flat faster.

Those bad modules reach their low voltage state much faster than the remainder of the pack, causing the Battery Management System to alert for low cell voltage. I could keep driving, but I run the risk of permanently damaging those modules.

The best solution for increased range would be to use Tesla Model s modules. They are the most power-dense batteries available for EVs. For the same battery weight as the Leaf, I could probably go 100-150 miles on a charge. The problem is that they are expensive and they require a cooling system. Tesla batteries are much more volatile than the leaf because they use a different battery chemistry.
09-05-2019 08:50 AM
spiderserie4 fabulous work.

what's the final weight compared to stock alfa spider?
09-05-2019 08:23 AM
Alfajay
Quote:
Originally Posted by Elmolino View Post
The range is about 50 miles with average driving. I was hoping to get closer to 70 miles, which is possible.
Congratulations on a very well-done job. Must be satisfying to finally be driving it.

What accounts for the range difference between this car and factory-built EV (e.g., Leaf, Tesla)? Is it the challenge of packing enough batteries into a chassis that was never designed to accommodate them? If cost wasn't an issue, could you have put more batteries into the spider?
09-05-2019 08:17 AM
fransinge Amazing work !!
09-05-2019 06:12 AM
CohoQuad Looks fantastic! What do you think the total cost of the gas/electric conversion ended up being?
Dan
09-05-2019 12:50 AM
AngloSpider That looks fantastic, well done!

What a great little city cruiser, that would suit me very well for my short (5 mile) commute to work.
09-04-2019 11:50 PM
Mousetrap It looks great and the installation looks very professional.

Well Done.

Andy S
09-04-2019 10:05 PM
PSk Gee that is extremely professional looking!

Pete
09-04-2019 09:17 PM
Elmolino Project Update. The electric spider is pretty much done! Ive driven about 200 miles so far and everything seems to work great.

The range is about 50 miles with average driving. I was hoping to get closer to 70 miles, which is possible. The battery pack has a few modules that don't have nearly the capacity that they should. This is totally my fault because I bought the cheapest leaf batteries I could find. Most of the pack is in good shape, there might be 4 or 5 of the 38 that need to be replaced.

All thats left is to source some bumpers, install some shoulder belts, and replace the bum batteries. Here are some pictures of the final product.
06-25-2019 07:36 PM
dghii Too cool!! Congrats!

Can't wait to hear more about driving impressions and battery performance (range, charge time).
06-25-2019 07:04 PM
PSk Sweet

Pete
06-25-2019 05:01 PM
Cosimo Congratulations! And yes, I'm also anxious to see a video!
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