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Topic: How many of us are there? Owners of Dodge based RV's?

Posted By: Griff in Fairbanks on 11/11/17 01:16pm

BTW - My wife and I encountered this --
[image]
-- when we went out in the morning to work on the new house last summer, between the joist framing for the main floor.

That monstrosity is 10-12 inches in diameter and I recognized the wasps as the type that tend to gang up on perceived threats.


1970 Explorer Class A on a 1969 Dodge M300 chassis with 318 cu. in. (split year)
1972 Executive Class A on a Dodge M375 chassis with 413 cu. in.
1973 Explorer Class A on a Dodge RM350 (R4) chassis with 318 engine & tranny from 1970 Explorer Class A



Posted By: Eric Hysteric on 11/13/17 03:08am

Brrrrr but nice home.
Thank you Griff for the vacuum hoses picture. I'll check it for matches.
Does anyone know where I can buy this?
[image]


'79 Dodge Sportsman 5.9 LA 360 TEC Campmate


Posted By: Griff in Fairbanks on 11/13/17 03:30am

I don't have anything like that in my "spare" parts collection. Four possibilities:

1. Leeann recently posted the name (and maybe link) of a warehouse full of parts like that stripped off old motorhomes.

2. Some of the online RV specialty stores have new replacements for some fixtures like that. (Google "RV parts" or "RV lights" ... or check eBay in similar categories.)

3. Replace it with a similar LED fixture. (This is my personal preference.)

4. Make a new lens but this requires a bit of practice/skill. (The right plastic, low heat, a custom mold, and -- ideally -- vacuum forming equipment.)


Posted By: Leeann on 11/13/17 06:01am

Rvdoctorgeorge.com


'73 Concord 20' Class A w/Dodge 440 - see profile for photo


Posted By: Eric Hysteric on 11/15/17 01:10am

Thanks Griff and Leeann! I've found the cover in (big surprise) in Germany. The name of the lamps is Progressive Dynamic PD750, PD752WWV, PD751WWV.....

* This post was edited 11/15/17 01:43am by Eric Hysteric *


Posted By: Leeann on 11/15/17 05:58am

Interesting. That’s also the name of the converter I have.


Posted By: TreeSeeker on 11/15/17 09:14am

Griff wrote:

I'd recommend a new power converter and strongly suggest the brand Leeann has. My logic is why spend money to 'fix' possible problems with an old converter ... a new (modern) converter eliminates the possible problems.


I looked at a couple of new converters, including Progressive Dynamics, and none mentioned voltage regulation. Yes, there are advantages to upgrading to a new converter (which I am considering) but voltage regulation doesn't seem to be one of them.

It is interesting to note, that our old style converters (with single stage chargers) put out steady voltage. Mine puts out 13.6v and I have never seen it higher. But they are terrible battery chargers.

The main reason I am concerned about multi-stage chargers is that I read that a lot of LED lights burn out apparently because of too high of voltage. Incandescent lights do not have this problem. Higher end LEDs can handle higher voltages too, but they are much more expensive, presumably because they have built-in regulation.

So, ironically, upgrading to a multi-stage charger could create new problems with newer electronic devices. Thus my interest in regulators.


Posted By: Griff in Fairbanks on 11/15/17 02:01pm

Leeann and Eric:

Two entirely different countries, plus Eric's fixture is singular and Leeann's converter is plural. Finally, there are loopholes in the laws for trademark and brand registration that 'allow' that kind of thing. In the U.S., registration at the state level permits the same name being registered by an entity in a neighboring state. Likewise, at the U.S. federal level does not preclude the same name being used in another country.


Posted By: RvFNG76 on 11/15/17 02:15pm

I work for Forest River rv the plant in Centreville aka Viking we have alot of newer power converters that are missing the tab that goes over the main breaker not a big issue but cannot be used in production so essentially "damaged". The are for pull behinds can i use one of them in my motorhome or would this cause issues????
Plus side of this employment is i upgraded to PEX plumbing and a new water pump along ith other odd ball things such as the new LED lights from Facon


Posted By: Griff in Fairbanks on 11/15/17 03:30pm

TreeSeeker:

This is starting to get beyond the scope of my knowledge and experience. It's one thing if pushing my existing limitations causes a problem for me personally. However, I'm very resistant to the possibility of causing problems for others. This is the reason for my frequent use of caveats, such as usually, typically, in general, and so forth. (As is, I still make enough mistakes to be personally disheartening.)

I recommend contacting Progressive Dynamics customer/technical service and discussing your concerns with them.

Having said that, there are a few things I can reasonably state.

Power supplies and multi-stage battery chargers are very different. Because they are similar in function, the significant differences are easy to overlook. (This is precisely where most people encounter problems so you asking questions is noteworthy and commendable.)

Modern power supplies produce regulated and filtered output at a steady voltage, provided they are good units designed and manufactured by a reliable company. (Five caveats in that statement, put in italics to make them noticeable.)

Multi-stage battery chargers sense the state of the battery's charge and vary their output voltage in response to the charge level. The initial bulk stage is at a relatively high output voltage. As the battery approaches 100 percent charged, the output voltage is reduced or pulsed off and on. (Two different techniques effectively yielding the same result for the battery.)

At the risk of oversimplification, voltage is pressure and current (amps) is volume. This is the basis for using water and pneumatic systems as a generalized analogy. (The physics involved are significantly different, with changes in the battery's internal chemistry adding to the differences that cause the analogies to fall apart when you dig deeper.)

I'm willing to bet Progressive Dynamics converters use the battery as a back-end buffer, to supplement the power supply's output when load demand exceeds the power supply's capacity. This is similar to how an engine's electrical system works. (I'd need to dig deeper to verify this assumption.)

Quite likely, the converter's output to the coach circuits is regulated and filtered to a steady voltage, regardless of what's happening on the converter's back-end.

An alternative for you is to use your existing power supply and a separate multi-stage battery charger. This would involve using a switch or relay for an exclusive-or for electrical source. (Battery OR power supply but NOT both at the same time.)

My main concern in this alternative is the effect of voltage drop/spike during switch-over.


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