Bigfoot 20.....this could be brain shattering!

[BJoe]

Guess there's a crappy video of it tooling around on the little tires"thumbsup"

Oct 25, 2012 9:29am | Facebook

 

[SMUDGEBUG]

Maybe they gonna fit it with a Larger scale MFC for those realistic sounds and have a few flames spitting out of the exhaust

 

[JohnRobHolmes]

1400 pounds of lead batteries, a recipe for great performance! At least they are trying new things. Maybe once they get it rolling it will get a swap for some lithium and drop 1200 pounds.

 

[hawnmt]

Unveiled

 

[BJoe]

That is pretty sweet looking, any under body pics?

 

[Cheatin]

1400 pounds of lead batteries, a recipe for great performance! At least they are trying new things. Maybe once they get it rolling it will get a swap for some lithium and drop 1200 pounds.

Not with Odyssey on the side of the truck. :ror:

 

[Charlie-III]

I'm in the UPS business, we deal with EnerSys a lot for UPS batteries (as well as other manufacturers).

I have some interest in this truck, so, I found a bit more here.... http://allabouthorsepower.com/artic...h-first-all-electric-powered-monster-truck--2

Gonna need a BEC

I saw electric steering, I hope they got a strong servo and a BEC

From the provided link, they will have a separate set of batteries for steering and gages, etc. Soooo.....yeah, they have a BEC!

An electric MT kinda makes sense. Lots of torque off the line, endurance isn't an issue, no fumes for indoor venues and they'll run upside down. But not nearly as much fun to watch.

Valid points on the torque & performance. They will be running what we call "3 strings of batteries, 10 batteries/string". Thus a string is ~135VDC (series connected through 10 batteries) with a LOT of amps behind it. The 3 strings are then paralleled together for additional amps. Not sure how they came up with 360 volts?? Maybe their description is wrong and it's actually 30 batteries in series (which at a nominal 12VDC/battery, would give 360VDC total)??

 

[thisdougsforu]

Cool to see a thread about this here. I work for the team. I'll post some detailed motor shots when the truck gets back to the shop (I'm not in Vegas for unveiling). It reminds me of a scaled up Wraith or SCX10 with regards to how it works. The motor shaft goes into the transfer case like the v8 crank so it's the same type of mechanism....just a huge 540 style motor provides the power. The truck has around 800 ft lbs of torque for those asking and that's plenty for a display/crush vehicle.

Don't worry, you won't be seeing our alcohol trucks going away anytime soon (we are working of BIGFOOT #21 as we speak, and it's a standard big ford) but we wanted to go outside the box for this one. You either innovate or follow.

 

[Charlie-III]

Cool to see a thread about this here. I work for the team. I'll post some detailed motor shots when the truck gets back to the shop (I'm not in Vegas for unveiling). It reminds me of a scaled up Wraith or SCX10.

The truck has around 800 ft lbs of torque for those asking.

Cool....."thumbsup""thumbsup"

 

[thisdougsforu]

 

[JohnRobHolmes]

That is one heckuva motor! I'm guessing it is AC async?

Were the batteries mounted like that for show? There is a ton of room to mount them lower, but the truck seems more for show than for go anyways.

 

[thisdougsforu]

That is one heckuva motor! I'm guessing it is AC async?

Were the batteries mounted like that for show? There is a ton of room to mount them lower, but the truck seems more for show than for go anyways.

No, that's how they are stored for real. Those things won't be moving and are tucked in nice and tight between the shock mounts. Mounting them lower wouldn't work due to a combination of safety concerns and fit/clearance issues with the 4 link travel.

If the truck is ever called into hardcore racing duty (versus dealership car crushes/parades/displays/etc) then you'd see extensive chassis modification to get that weight lower "thumbsup"

When this build started the guys in the shop constantly joked about how if something goes wrong the driver is going to be sitting inside an arc welder!

 

[JohnRobHolmes]

No joke! There is a lot of power sitting there, and electric accidents are very violent. I shocked myself good a few weeks back working on just a wimpy 100v bike.

 

[BJoe]

Looks like you guys could make the "packs" shorter and put in a few more between the driver's back and rear mounts. Can't wait to see some better video of it running too!

 

[Colby]

I cant wait to see an electric slung cyclone. Someone let Tom Meents drive it :twisted: Very cool and innovative setup. Have loved bigfoot all my life and its great to see the team evolving and growing like this! "thumbsup"

 

[Charlie-III]

No, that's how they are stored for real. Those things won't be moving and are tucked in nice and tight between the shock mounts. Mounting them lower wouldn't work due to a combination of safety concerns and fit/clearance issues with the 4 link travel.

If the truck is ever called into hardcore racing duty (versus dealership car crushes/parades/displays/etc) then you'd see extensive chassis modification to get that weight lower "thumbsup"

When this build started the guys in the shop constantly joked about how if something goes wrong the driver is going to be sitting inside an arc welder!

Are these 12 volt jars or 16?? I got to thinking based on numbers listed in the specs. I will have to guess 16 volt jars with front terminals.
Do you have a battery part number (that you can reveal)?8)

No joke! There is a lot of power sitting there, and electric accidents are very violent. I shocked myself good a few weeks back working on just a wimpy 100v bike.

Yep....arc-welder with no on/off switch!:shock:
Typical UPS I deal with is 40 12vdc ~400A jars wired in series floating around 545VDC per string. Multiple strings paralleled for runtime or amp load.

A usual battery is a C&D UPS-12-490MR (if you want to look up specs).

I'm a field guy for this company.... www.BTECHinc.com

 

[JohnRobHolmes]

Any specs on the motor and controls would be cool too! The batteries are PC1200s Charlie.

 

[bigstu]

Was told the motor looks like the motor Allison Transmission uses in their hybrid mass transit bus conversions..
Not 100% on that one though...

 

[BigSki]

Any specs on the motor and controls would be cool too! The batteries are PC1200s Charlie.

John, you have to send them a big azz HH decal for their motor! "thumbsup"

 

[binaryterror]

They could even come up w/ a MOA design which would allow more wheel travel and no more snapped drive shafts.

Better idea would be 4 in wheel motors. Then no more failures ever. You do have the pesky unsprung weight issue though, but that can be overcome.