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Shoe distance from the drum has very little effect on braking action with electric brakes. There may be a small difference in braking effort due to the slightly different leverage the cam has on the shoes when the magnet lever arm moves a different distance on each side before the shoes contact...

Hopefully the other posts have convinced you that your TV is not adequate for this PUP. To help you further I'll address each of your points: No - axle weight cannot be calculated, you must weigh it. In your case, axle ratio has no bearing whatsoever with towing capacity and cannot be used...

I have worked in electronics repair for 50 years and have seen many devices damaged by stepped sine converters. Usually it will be an over current condition in a linear type of power supply. If the power supply is protected by a fuse, then it usually blows to prevent damage. Most modern...

You don't say what your current TV is, but if it is capable of towing a Highwall PUP and has a 7 pin connector as standard, then it likely has been pre-wired for a brake controller. If so, then it is just plug and play to install, usually just need a couple of screws to hold it under the...

Not quite right. And several replies to this thread are confusing "Converters" with "Inverters", so be careful what you read. You are correct that an inverter will consume battery power as long as it is on, how much depends on the inverter idle current. Idle current is going to be less on...

Something doesn't seem right with those gens. I have a Honda EU2000 (somewhat less output than yours) and it runs my AC just fine. The AC unit is a Coleman Mach 3 PS (13.5K BTU) - a pretty standard unit on a lot of PUPs.

This is TV dependent. Most vehicles with a tow package and factory 7-pin connector will disconnect the 7-pin 12V charge line when the vehicle is not running and therefore the TV battery cannot discharge (nor can it be charged by the PUP converter. If the 7-pin was an added accessory by...

We have this 3-way fridge in our 2006 Fleetwood Niagara Highwall. Clockwise (larger black dots) is colder.

In your case then, where you have no other significant PUP current draws while towing, you should get acceptable charging as long as the TV charging system maintains approximately 14v. The only issue would be if your TV uses smart charging where the alternator voltage drops to near battery...

If you are able to get 13.8v at the battery (assuming you're measuring at the PUP battery and not the TV battery) with a partially discharged battery on the PUP, then you should get a decent charge. A DC-DC converter on the PUP will do better. Note that voltage at the PUP battery will vary...

You are correct for incandescent type headlamps. However, most vehicles today that use smart charging also use LED headlamps which do not change brightness with input voltage variations.

A couple of answers (at least IMHO): 1. Regarding a power supply: There are several DC-DC boost charging converters available which solve the low voltage problem at the trailer and which are ruggedized for RV/Marine use. You need about 120W output capability (10 Amps) to charge the RV battery...

This is not quite right (... hot disc brake pads will still work ok, unlike brake shoes-drums). Disk brake pads run at higher temperatures than drum shoes do under normal operation. It's simple physics. For the same weight, downhill altitude change, speed, and time to descend, a disk brake and...

Yes, you can lift the roof by manualy lifting the 4 corners, but you have to be very careful to not damage the lift cables. When the roof is manually lifted, the lift cables will go slack and they can get caught on interference items and fall out of the pulley groove on one or more pulleys...

This is incorrect. Breakers are designed to trip above the rated load. The UL (Underwriters Laboratory) requirement for breaker certification requires the breaker handle 100% of its rated load indefinitely when operated in open air. In an enclosed very hot environment, it is possible for a...

Yes, it is necessary. The panel fuses/breakers do not protect the wiring between the panel and the battery. A short in this wiring with no protection at the battery itself can easily result in red hot wires and the potential for fire or a battery explosion. The protection at the battery should...

The frame on most PUP's is marginal in strength and a WDH puts tremendous down force on the PUP's frame at the WDH attachment point. A WDH uses leverage through the frame to transfer tongue weight both back to the trailer axles and forward to the TV front axle. You have to be very careful here...

You would only be able to notice drag for a very short time. Unlike normal vehicle braking, when activated the breakaway switch applies full battery voltage to the brakes. Since this full force braking appears to have only occurred on the rear axle, it was not as effective as if both axles had...

It looks like you are focusing on the rear axle. According to your initial post, the failure was due to the breakaway switch energizing the brakes. If that is what happened, then I recommend you also find out why the front axle wasn't damaged also. The breakaway switch should energize all...

Great job! Just a word of caution - never energize the 110V option on an empty tank, it only takes seconds for the heater to burn out if it is not under water. I'm not sure how long it would be on this heater, but a home HW heater with 4,500W elements will burn out in 10 seconds or less if...