I actually looked at all your pics for copper colored straps but didn't spot any. The ones in post #103 were tinned? Why are you not using them in this build? Tinned copper has better resistance to corrosion.
The Barncat Battery- No weld/no solder
- Thread starter Barncat
- Start date
Yes the previous roll I bought was tinned. Latest purchase as I recall had more to do with price/availability. I'm not concerned about tarnish, there is no direct exposure to weather, and I've been using pure copper buss bars since Day 1. These packs need disassembly/inspection at least once a year and the copper can be quickly refreshed with 0000 steel wool and dusted off with the air compressor.
Another 4 hours or so to go. Some polycarbonate sheet parts to make, and wiring in the QS8 connector and 100A Littlefuse.
Pictured is the offhand screw slotting setup. Have some nice 6061 aluminum hex nuts for max conductivity.
20s will get my Blackcomb build to 60mph.
Pictured is the offhand screw slotting setup. Have some nice 6061 aluminum hex nuts for max conductivity.
20s will get my Blackcomb build to 60mph.
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The 4th and likely final Barncat Battery is on its first charge. Quite a bit of work to build these actually, but they'll outlive me, assuming 18650 and 21700 cells are still being made in the future... such small cells don't seem optimal for bike and vehicle use- with high steel content ratio and very high part count/pack, but I digress.
Had to add the 4 light aluminum angle top clamps to stiffen/flatten the lid. A few cell group V's were straying on the charger, which indicates inconsistent contact. 3/16" lexan won't do by itself. An (insulated) aluminum finned lid would be ideal, but i like the transparent look. I know of no finned lexan, nor do I have a 3D printer.
Had to add the 4 light aluminum angle top clamps to stiffen/flatten the lid. A few cell group V's were straying on the charger, which indicates inconsistent contact. 3/16" lexan won't do by itself. An (insulated) aluminum finned lid would be ideal, but i like the transparent look. I know of no finned lexan, nor do I have a 3D printer.
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Behold the 4 battery lineup. The latest pack kicks ass on the Blackcomb build in foreground. The Mongoose Pug build is elsewhere but shares one of these packs. A couple grand in cells and battery materials but well worth it for all the clean, quiet, high-speed fun.
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SlowCo
1 MW
Awesome line up of bikes. Is it hard to choose which one to ride? Or do you have a favorite?
Thanks 
.
The white bike is light, compact, precise bmx handling, but no suspension. Max 42mph.
The green OCC Stingray is quintessential FL stylin'. Carvy long wheelbase handling, the forks are fairly bump compliant, seat is a bit uncomfortable after 45 minutes due to the feet forward layout. 48mph.
The red bike is stellar. Full sized, full suspension, rock solid handling. Thousands of local drivers have undoubtedly said 'WTF is that' to themselves as I occasionally exceed 60mph with a tailwind.
The silver bike has been through many iterations. Lighter and more compact than the red bike, excellent but twitchier handling, still a few parts to optimize, building a CSK30 sprag sprocket for it as we speak. 60mph.
Not pictured is the black Mongoose Pug build which is also fun and described in the ebike build section. 45mph.
.The white bike is light, compact, precise bmx handling, but no suspension. Max 42mph.
The green OCC Stingray is quintessential FL stylin'. Carvy long wheelbase handling, the forks are fairly bump compliant, seat is a bit uncomfortable after 45 minutes due to the feet forward layout. 48mph.
The red bike is stellar. Full sized, full suspension, rock solid handling. Thousands of local drivers have undoubtedly said 'WTF is that' to themselves as I occasionally exceed 60mph with a tailwind.
The silver bike has been through many iterations. Lighter and more compact than the red bike, excellent but twitchier handling, still a few parts to optimize, building a CSK30 sprag sprocket for it as we speak. 60mph.
Not pictured is the black Mongoose Pug build which is also fun and described in the ebike build section. 45mph.
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