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Forum
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Allison Transmission leak
My 2000 Safari Sahara has a couple of small leaks in the bolts. One on a drain bolt and another one on the bolts on the front. Suggestions? Just try to tighten them up a little?
https://1drv.ms/u/s!App4bDOKyF9rhpdm2RoynmqQQz86aA?e=smgJnq height=600 width=800
https://1drv.ms/u/s!App4bDOKyF9rhpdlr_3oxZcPblIVig?e=2tIrZX height=800 width=600
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map40
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08/26/21 11:01am |
Class A Motorhomes
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RE: 2004 Cat C7 Charging LifePo4 battery bank
Not an expert but there have been prior posts that typically alternators will not sustian their maximum ratings without damage which is basically what you want with that amount of Ah.
But not sure what you mean by 1200A - Are you planning for 1200 Ah?
Suggest you get the model number and contact the mfg.
Well, by 1200 amps I meant 1200 usable amps. 6 280 amps batteries. 15kw in the 12v system. I also have 28kw in a 48V system to run all the 110-220 with a split phase.
This 12v battery bank will be for storing the solar and running the 12V side of the house. If needed, I can run 110V through the inverter (which I might be upgrading to a low frequency inverter so I can run ACs with the 12v batteries).
I have a 6kw inverter generator that I can use to recharge both banks at a 90% efficiency, if I ever need it, wich I don{t believe I ever will.
I am getting rid of my diesel generator. I am done with the smell, noise, maintenance and ineficiency. With what I get from selling the generators I can do all of this and more.
Now I have to find a way to control the flow from the alternator or install a timer on the batteries so the charge intermitently.
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map40
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03/03/21 03:04pm |
Tech Issues
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RE: LiFePO4 - SOK or Renogy.
My only concern would be temp protection, but you mentioned that is not an issue. If that is the case, I bought LifePo4 280Amp cells on Wish shipping from US $270. I am sure you can access it from Canada.
There is also cells in Amazon. They are all the same cells you can find in SOK and the other batteries. Throw in a BMS and make your own battery. I am making a 1200 amps temp protected BT conected for under $1500
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map40
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03/03/21 01:52pm |
Tech Issues
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RE: 2004 Cat C7 Charging LifePo4 battery bank
Map40,
I wish I could help more, but I am currently still in the research phase for a client. There are available DC-DC chargers that both create the correct final voltage for charging LiFePo4 batteries and limit the charge current drawn from the source. It is a single unit. There also should be a BMS Battery Management System with the Li unit to keep it from hurting itself or others. As said, this is a study in process on my part.
Matt
Thanks for the reply Matt. I got that part covered. The batteries are managed by their own BMS which can charge them dirvectly from the alternator feed. All of that works and so far I have 340 amps installed and they work great. My concern is: Will the alternator take the workload? The old Lead acid setup was 300 amps to recharge in the worst case, but when you talk about 1200 amps, the alternator will NEVER rest. Wil it last?
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map40
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03/03/21 01:21pm |
Tech Issues
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2004 Cat C7 Charging LifePo4 battery bank
I am upgrading my battery bank to a hell of a lot of capacity (Around 1200 amps). I know that if this was a gasser, the alternator will die young if it has to charge the bank. How good is the alternator in the Caterpillar? Will it take sustain maximun capacity constant? Otherwise I need to find a way to regulate power or connect and disconnect the banlk ontermitently.
Thanks!
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map40
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03/03/21 12:52pm |
Tech Issues
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RE: Wire gauge for a 200 ft run on 30 amps or 50 amps?
:)3% for voltage drop.
Hopefully, Old Biscuit is indicating copper wire and not aluminum.
Direct burial or are you going to put in conduit?
:S
I was going to have the GHana Dancing Pallbearers to do the burial :)
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map40
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02/13/21 12:56pm |
Tech Issues
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RE: Wire gauge for a 200 ft run on 30 amps or 50 amps?
advice.
Thank you for that, I cringe whenever I see this and it reminds me of the state of education in America.
No, no, don't go blaming the state of education in America. Here is the problem: I speak 6 languages and use them frequently, so my phone and computer do not know what I am writing and the autocorrect wants to commit suicide every time I chat with somebody different. You should see it when I go from Spanish to Cantonese...
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map40
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02/12/21 01:51pm |
Tech Issues
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RE: Wire gauge for a 200 ft run on 30 amps or 50 amps?
3% Max Voltage drop for that 200' run
Otherwise you will have Low Voltage any time the supply voltage drops below 115V
50A #1AWG
30A #3AWG
Do NOT scrimp on the wire size...........
Thanks and thanks for the advise!
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map40
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02/12/21 12:28pm |
Tech Issues
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RE: Wire gauge for a 200 ft run on 30 amps or 50 amps?
Thanks! What would be an acceptable voltage drop? 5%?
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map40
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02/12/21 12:10pm |
Tech Issues
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Wire gauge for a 200 ft run on 30 amps or 50 amps?
Anybody has a good calculator for wire gauge? I need to do a wire run of 200ft buried wire. I can do 50amps or 30amps. Any advise will be greatly appreciated!
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map40
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02/12/21 11:40am |
Tech Issues
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RE: Lithium Titanate
How about this ones
https://bigbattery.com/products/12v-170ah-lifepo4-power-block-rv-battery/
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map40
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01/30/21 08:35am |
Tech Issues
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Can you put diesel oil in a gas generator?
So, can you?
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map40
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12/18/20 05:10pm |
Class A Motorhomes
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RE: Oil for generator
15w40 Mobil 1. Covers all temperatures. Some people use diesel oil, but I keep the diesel for the diesel and the gas with the gas.
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map40
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12/18/20 05:07pm |
Class A Motorhomes
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An old post, relevant to the incoming storm
Sheet of Ice
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map40
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12/18/20 05:02pm |
Class A Motorhomes
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RE: Is there any difference in DRIVING a gas class A vs diesel?
I did not read all the replies but if you tow having an exhaust brake sure is nice.
Gas engines now have transmission braking also
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map40
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12/02/20 05:10am |
Class A Motorhomes
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RE: Is there any difference in DRIVING a gas class A vs diesel?
I did not mean to ruffle too many feathers. The best example I can give you is I had a Fleetwood Fiesta LX, 37 feet long, V10, 362HP. Towing 5000#s I could go up hill accelerating with no problems anywhere. My 2007 Alfa See Ya Cat C7 350HP towing 5000# would not pick up any speed when going uphill.
If I put my foot down, the gasser would take off much faster, no matter what.
I understand the Alfa is heavier, but the gasser was no slouch. I believe there is an outdated concept that all diesels are better. I believe that once you go over 400HP and 1000# of torque diesels are faster, but the gassers have improved so much that they can compete with no problems.
Why do I have Diesels? Simple: rear engine, no noise, ride quality.
Also speed limit. The F53 is limited to 75. I don't drive that fast, but the transmissions in the F53s are doomed thanks to the governor. You put the foot down, it down shifts and once it hits 75 it stays there, revving at 5000RPM. This will kill the tranny pretty fast.
One last thing, I did not buy a new RV every year, I owned an RV rental company and we had a fleet. I have seen the RVs go through 200K on both types of engines trouble free. As a matter of fact, I had a V10 in a class C with 300K, all original.
To the OP, my advise is make your decision based on ride quality, handling, noise and layout, not fuel type. Diesels cost twice as much to maintain. Unless you are buying something with over 400HP, power is not much of a difference anymore
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map40
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12/02/20 05:09am |
Class A Motorhomes
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RE: Is there any difference in DRIVING a gas class A vs diesel?
I had at least 26 different RVs. Somehow I never found the diesel to be more powerful than the gas. The v10s rev up and go like a bat out of hell compared to the cats and Cummins. And even going uphill, the gassers can pick up speed better, and they also have transmission braking.
No, the difference is the chassis. Air ride and rear engine make the difference. Bigger tires, better axles, better steering.
And yes, right now I own 2 RVs, both diesels, cloth Caterpillar.
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map40
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11/27/20 08:38pm |
Class A Motorhomes
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RE: 3126B Code 71 and then 15 and 39
What engine?
Cat 3126B
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map40
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11/19/20 06:10am |
Class A Motorhomes
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RE: 3126B Code 71 and then 15 and 39
39 is an injector accuation pressure malfunction but 15 is a sensor fault. Check the wire harness or maybe a bag senser.
I thought the same. I don't believe that the codes are real, because they are all electrical (sensor, power, and then some), but then all of the sudden everything is OK. If just knew where where the wire is routed and which cable to trace for fault 71, I think the rest will disappear.
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map40
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11/18/20 07:56pm |
Class A Motorhomes
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RE: Onan Hour meter memory
It has a small memory chip that feeds from a small capacitor. If it resets means the board of the counter is fried. A hobbs might be expensive, but I have bought counters on amazon for $10
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map40
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11/18/20 04:27pm |
Class A Motorhomes
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