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Old 02-04-2012, 05:49 PM   #1561
tommu56
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I have a rural off grid cabin on solar and most of the time excluding wire size the reason to use high voltage to the charge controller is to maximize the time you can get power out of the panels.

Think early morning, and late evening, or cloudy day the 12v panels doesn't get enough sun to make 12v each but they are making 7~8v each then it charges at reduced rate (better than nothing).

The charge controller takes advantage of this and takes the 14-18v and converts it to 12v to charge the battery in essence trying to get as much of a charge that it can squeak out.

I'm running 600watts of panels, outback charge controller 1800AH L16 batteries and outback inverter.
This runs my 450ft well, and some lights, and some small appliances, radio, and TV.

I'm another electrician and I've trouble shot some bad installed solar setups and most of the time Ive found under sizes wires, poor battery maintenance, and not living with in the size of the system.

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Old 02-04-2012, 05:50 PM   #1562
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All that chain slapping makes me just cringe.
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Old 02-04-2012, 06:08 PM   #1563
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Quote:
Originally Posted by pfb View Post
Lots of emergency vehicles (Firetrucks, ambulances) use automatic chain systems. Mountain volunteer fire departments really love them. You wouldn't think they would work well, but actually are pretty awesome. I think ONSPOT even makes one specifically for the Sprinter chassis, so no fabrication work.






Not cheap, but a lot less expensive than making your sprinter a 4x4
Quote:
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Hey, the instachain video even has a Sprinter in it!




As an EX Chief Engineer for 20 years at a volunteer fire co the above chains just don't cut it if you lock up a tire they don't get spun under the tires and cant stopped (ABS helps but isn't the cure)

for quick on off we prefer cable chains

security chain

I can have them on in about 5 minuets with the 2 back hooks you don't have to drive on them just wrap them around the tire and hook them together put the tightener on.

and better performance is reinforced Vbar

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Old 02-04-2012, 06:17 PM   #1564
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Geek you might want to look at auto sock as well
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Old 02-04-2012, 07:17 PM   #1565
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Holy heck those automatic chain devices look like a maintenance nightware.

I didn't even know they existed.. pretty neat design idea.

HBN: If I had all those batteries in the sprinter, I wouldn't need an engine
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Old 02-04-2012, 07:24 PM   #1566
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Quote:
Originally Posted by tommu56 View Post
As an EX Chief Engineer for 20 years at a volunteer fire co the above chains just don't cut it if you lock up a tire they don't get spun under the tires and cant stopped (ABS helps but isn't the cure)
Well, in CO, lots (if not all) of the mountain departments spec'ed them on pretty much any engine built in the last 10 years. 5 minutes delay to chain up (if your incredibly fast, 15 is probably a closer estimate) is a pretty big additional delay on the already not-super-fast response for the mountain VFD's.

Are four fully chained up tires better than two auto-chains in severe weather? Absolutely.
...Until you hit a dry road, or if the chains are sitting in a box instead of on the tires.
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pfb screwed with this post 02-04-2012 at 07:31 PM
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Old 02-04-2012, 07:28 PM   #1567
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automatic chain devices ...
I didn't even know they existed..
Now that you know, you are going to see them on all kinds of medium duty trucks! Even if they are not engaged, you can spot some of the chain segments under the truck.

Maintenance is fairly simple. A pneumatic actuator to rotate them into position and apply controlled pressure on the chain roller wheel against the sidewall. The action of throwing the chain is driven by the tire itself.
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Old 02-04-2012, 08:03 PM   #1568
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Quote:
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Time to learn about ways to get myself unstuck if I get it wrong again like I did today... luckily I got it stuck in Nederland and not in the middle of nowhere.
A good LSD such as a trutrac if available, or selectable locker along with quality snow tires & a winch up front perhaps? Reciever mount portable winch be even better, use it front or back & leave it at home when not needed.
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Old 02-04-2012, 09:26 PM   #1569
Alti Tude
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Quote:
Originally Posted by pfb View Post
Now that you know, you are going to see them on all kinds of medium duty trucks! Even if they are not engaged, you can spot some of the chain segments under the truck.

Maintenance is fairly simple. A pneumatic actuator to rotate them into position and apply controlled pressure on the chain roller wheel against the sidewall. The action of throwing the chain is driven by the tire itself.
We used automatic chains on the trucks I used to drive hauling money for the Fed. I always loved em, but they really don't do too good in reverse either. The best part though is cruising by the chain up areas on I70 while everyone else has to stop and throw iron. In normal use, on normal roads, they work just fine.
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Old 02-04-2012, 09:47 PM   #1570
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Quote:
Originally Posted by Geek View Post
HBN: If I had all those batteries in the sprinter, I wouldn't need an engine
I noticed a delivery truck next to me today. No nasty diesel smell. No noise at all. All electric box truck.
Be curious to know what the range is for one of those.
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Old 02-04-2012, 09:49 PM   #1571
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Ian: the ones here in Boulder go 120 miles on a charge
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Old 02-04-2012, 09:54 PM   #1572
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Thanks. That's first one I've seen.
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Old 02-04-2012, 10:44 PM   #1573
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What happened to the stock wheels? If they're still around you could stud tires on them. Its quite a magic carpet you are running around in these days!

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Old 02-04-2012, 10:53 PM   #1574
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Hey Matt!

It has been far too long since we hung out with that dog while you changed your oil....





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Old 02-04-2012, 11:57 PM   #1575
Hardware02
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The auto chains look neat but I suspect you may be losing some ground clearance.

What about a locker (would also help during summer softroading) and studded snow tires?

A winch would also be a useful addition year round.
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