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simple 24v to 12v

8K views 38 replies 14 participants last post by  ekibike 
#1 ·
I recently picked up a 1017A and needless to say needed a 12v source for the accessories. instead of the typical more expensive bulky units, i used these little dc to dc voltage convertors that i got from a friend that were not used for his project. they are rated for 5 amps each. i set them in parallel and adjusted the output to 13.8 v and 4 amps to charge a third 12v battery that i managed to squeeze in the stock battery box. seems like its working pretty good.






 
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#2 ·
Little Switched-mode power supplies - they are cure and effective. Just 3 things to watch for:

1) You may want to conformal coat them or put them inside a sealed box of their own. Dow Corning makes a nice dip style conformal coat that works a treat.
2) They put out a lot of electrical noise - do not be surprised if out in the field they interfere with radio equipment.
3) Unless designed for automotive use, they may succumb to voltage spikes of 120V which is often found on a 24V automotive circuits - just be aware.
 
#5 ·
Ah ! another fellow ham - mogger ! Welcome from VK5 land:)
You will be fine on 2m and above - it is HF that will most likely be an issue.
It may just require some RFI filters on the leads that connects to the boards.
 
#12 · (Edited)
Hi TMAX . Well, having worked in and around Vancouver BC many times, and also having
Spent weeks in the Amazon Basin, I will say that both are very wet, rainy parts of the planet.

I'd rather live in Vancouver 20 times over , rather than in Manaus or Santerem, all day long.

However, there is a huge difference in the amount of rainwater in the Amazonian drainage, the
Annual Rainfall, not just the discharge of the river (although they are obviously directly connected).

The Amazon : It Discharges an average of 209,000 cubic meters per SECOND (7,381,000 Cu Ft/sec ), which is greater than the next SEVEN Rivers combined.That is the off season number. In the rainy season, 300,000 cubic meters PER SECOND, is the norm.

The Amazon accounts for one fifth of the world's total river flow.The amazon pushes a plume of fresh water into the Ocean....how large ? Well, about 250 miles deep and 100
Miles wide, overpowering the ocean, and essentially creating a fresh water lake , which is imposed on the Atlantic Ocean, no small beans. Fresh water has been recorded by ships in the area, far offshore, well outside the sight of land. Serious plumbing . We flew over the mouth in a plane ( Twin Otter ? Probably), and the plume, which was discolored, went east beyond our line of sight. We were probably
At 3000 Ft., but that is a guess. It was in 1991.

So, the condos in Vancouver leak when it rains, but in Manaus, they might float.Santarem
Was a bit dryer, when I was there, but either place will firmly put the RAIN in Rain Forest.

However, I think the heaviest rain I ever experienced was in American Samoa, up on the hill
Above Pago Pago ('Pango', in the local vernacular ). It literally came down in 'sheets'. I had heard that term, but had written it off as hyperbole....but then I saw it...it came down in fluid masses...walls of water. Never seen it before or since. It didn't last long, 20 minutes maybe, but it was something.Not drops...sheets of water, as if you
Had a cookie sheet of water and rolled it , dumping the whole deal.

Also, in Vancouver, you can duck into Temaki Sushi during a downpour. Take a cab home.

(Off topic thread specialist...)
 
#19 ·
the radio box is a Zepplin ACE I.

its very nicely built. all welded alum with diesel heater, vent fan, lights, and mounting rails on the roof, sides and floor. came with all sorts of cool things like HK rifle racks.

i rearranged it a bit and put a bed in it.
 
#21 ·
probably not as its from German army. it was brought in a few years ago but the price was high so it never sold. funny enough, it was actually brand new and had never been used. i think the original asking price was 5 grand. only if people knew what the real price was when purchased from factory.


there are a number of domestic radio boxes. that you would probably be your best bet specially that you are in the states already.
 
#25 · (Edited)

thank you. i got it from a guy that had it imported and found out its way too much truck for him. he had zero 4x4ring experince and this wasnt what he needed.

if you really do want one, there is one for same here in langly. let me know and i will forward you the contact info.

I sure like that truck. Looks brand new!---My fave color--OD green.
I seriously have been thinking about a 1017A. I have a 1219, 5ton MERZ 2wd
with OM366LA engine for farm use and it is an awesome bob tail truck.
But a 4wd for recreational use would be fun. Did you get the radio shelter at the same time as the truck?
TLane

it was actually in awesome shape when i got it. was amazed on how nice it drove and honestly felt like a new rig. however it has a few scares now but the way i see it they were weak links anyway.

if you are familiar with the big cab and you have no problem with the size of it, i highly recommend. i can not stress how impressed i am by the performance of this rig off road. no its not a mog but it has done everything i throw at her with no hessitation. hate to say it but almost mog like performance and i never though this way till i put her to test. sure you will miss the progressive coils and 4 wheel disc but you will gain much more simple and reliable truck. i picked up the shelter seperatly. have only had it for maybe 5 weeks now (the shelter) and truly enjoying it. this truck had a different shelter on it what it was for sale (one like rostige) but i was not interested in it as it was customized by the previous owner. he ended up selling it seperatly.

long story short, i highly recommend. and this is comming from a guy that only talks mogs. having said that, if you can wait, this rig might be for sale once my supper dupper mog is readly LOL

jamie Davis' show on TV, highway thru hell.
i'm pretty sure jamie has seen it as i drove by him and his big rig last week and we both rubber necked it. :D
 
#23 ·
MERZ 1017A

I sure like that truck. Looks brand new!---My fave color--OD green.
I seriously have been thinking about a 1017A. I have a 1219, 5ton MERZ 2wd
with OM366LA engine for farm use and it is an awesome bob tail truck.
But a 4wd for recreational use would be fun. Did you get the radio shelter at the same time as the truck?
TLane
 
#24 ·
If there was one thing l would like to see, are both TMax's 1017 and Trev's sold RW together in Jamie Davis' show on TV, highway thru hell.

If you have never watched the show, or have been on the Coqu', you might not quite understand. But l will say, both would really round out his fleet. TMax has alotta truck there, and so did Trev. Yes Trev' your 1700 is a monster. Im just looking at what the RW was for the show.
 
#26 ·
TMax
That 5 ton has lots of articulation!--It also has very good ground clearance. What engine do you have. I think the 366A was available in 1988. The big tires and wheels probably gave you a lil higher cruising speed with lower RPM's?
Thanks for pics,
TLane
 
#27 ·
this one has a 352A. i'm not sure if the 366A was ever really offered in this body style. i think the next gen started in 1989 and those ones for sure have 366A or even LA. there was a 1217 with the same body style with 366A but again i have only seen a brochure and no real truck.

the tires and wheels actually gave allot more top speed. something like 22% more.

this one has 6:1 final ratio with 1.6:1 trasfer case. the first gears is 8.5:1

here is a pic of the 1217. its extra cab and comes singles and planetary axles. also 1400/20 tires were optional. i think this pic is from a 1986 brochure.
 

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#30 ·
haha. ya noodle is surely a fitting name. i just called her lucky #13 as thats what the military number is on it.

funy part is that i didnt really want to run the ramp but i had to run my mouth that i can probably hit the forklift with a stock truck and sure enough i was called on it. the rest is history :grin
 
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