Some semblance of Normal

When I last wrote, there was a long list of things that weren’t working/going well. The broken tow bar, roof leak, mashed fender, etc.

Well, the tow bar seems to be working fine. The roof isn’t leaking despite unusually heavy and frequent rain where we are staying (more on where later). Oh, the third RVlock was also having issues. I diagnosed it that the bar that operates the latch was bent. Once I straightened it, the lock has worked fine.

I had spent some time looking for body shops for thefront left fender damage RV – but there simply wasn’t anything out here. Not that we wanted to be out of the RV for the week it probably would take to fix it. The last fender we had repaired (much less damage from some lady in a gas station) took two days, and then we had to go back for the Diamond Shield. Thus we chose to do the repairs myself. Click -> to see the detailed damage.

I had done a lot of bodywork in my life – but mostly the kind where Bondo is being used to smooth out damaged metal. This repair job was fiberglass that had 10 breaks. One of the things I discovered when I took a better look at the fender was there was a large crack in the lower middle – where nothing hit it. Looking behind I could see there was a fiberglass patch, poorly installed in that area either at the factory or where the front cap was made. Lots of Bondo had been put on the outside of the front cap as well.  The twisting stress from the accident caused the damaged area to open up.

I reviewed my “fiberglass repair skills” on YouTube. It really CAN be a good resource so long as one is discerning. Time to order supplies: TotalBoat epoxy, mixing cups and sticks, small cheap brushes for application, a good mouse electric sander, a supply of sandpaper for the mouse as well as for hand sanding. I ordered two different thicknesses of fiberglass (single layer and mat), and a large duffle bag to put all that and some additional tools I would need. I had no place to store all this when it was raining, so I put a tarp under the front of the RV and I’d push the bag underneath when I wasn’t working.

Oh, and I tried several goo removers – the RV has Diamond Sheild on the lower front; a dense plastic film that is supposed to limit rock chip damage.  It can be peeled off with a little heat but leaves a nasty glue behind that almost nothing dissolves (I even tried gasoline, which did work).  Several hours went into a tedious cycle of application, waiting for the goo remover to work, then scraping.  In some cases the goo was simply sanded away, sacrificing sandpaper in the process.

When fiberglass breaks, the edges shred. It is like when cardboard is torn – it won’t go all the way back together, so each of the breaks needed to be cleaned up so the pieces could be put back in the correct place.   I first sanded down the inside and outside edges to give the epoxy clean access to the underlying fiberglass.  Then I ran a hacksaw blade between the damaged edges to cut off some of the frayed fiberglass so the sides would fit back into their proper alignment.  

Also, there is a metal U-channel support behind the fender that was “glued” across the joint between the front cap and the fender. It took me about 6 sessions of several hours each to straighten the support, clean up the torn edges, and epoxy the damaged sections together.  inside view of fiberglass repairsOn the back, I used mostly the thick fiberglass mat and epoxy to reinforce the damaged areas. On the front side, I added multiple narrow strips of single-layer fiberglass across the cracks.  Once everything had been reconstructed, work then moved on to Bondo and spot putty to smooth the outer surface.  I used a combination of a metal ruler and my hand to identify low spots; marking them with a pencil and then adding filler.  I used a foot-long 1×2 with sandpaper wrapped to even out everything.  Once I could see that this process was going to lead to a satisfactory repair, I ordered paint from PaintScratch.com. Their database was incomplete – I had to choose several different years of Tiffin motorhomes to find the three different paint codes I needed. I also ordered some primer and clear coat paint. With this automotive-style paint, the colors are sprayed on in multiple light coats.  Then when finished a clear coat is applied (in a similar manner) which is then polished to a shiny finish. PaintScratch supplied 12-ounce spray cans whose sprayers worked surprisingly well.

I think the one thing I failed to get was a better quality masking tape as I had some issues with the stripes – paint leaking under the tape.  I had to respray a number of edges to get clean lines. The most time was spent trying to get the surface as smooth and clean as possible. Some of the smaller defects didn’t show up until the first layer of finish paint was applied.

 

 

 

 

 

 

The headlight is now reinstalled and several layers of clear coat have been applied, but the surface is still “too orange peel” and needs further work (at the next long-term RV park, hopefully).

To recap – our insurance probably would have covered this repair, minus a $500 deductible.  Our rates surely would have gone up.  I spent less than that buying paint, tools, and supplies.  And most importantly, we didn’t have to leave our RV for a week to get it repaired. 

In other news – we have been working at Henry’s Lake State Park in Idaho.  It is only about 20 miles from West Yellowstone and thus Yellowstone National Park.  For three days (each) of light and sometimes interesting work a week, we get a full hookup site – and coincidentally a place to work on a broken fender.  

We’ve made a number of trips to Yellowstone as well as other local parks.  That is another advantage of this arrangement, 4 days off a week and lots of time to explore.  We even climbed Mt Washburn in Yellowstone.  

Oh, and two small doggies will be joining us soon.  Pictures and names coming in the next blog. 

 

DC power management, replacement.

The Problem

I’ve mentioned in other posts the problems we’ve had over the years with the DC power panel located (in the 32SA) in the passenger rear compartment, next to the batteries.  This panel has the main battery cut-off switch, the Inverter DC power switch, four DC breakers for distributing power to various parts of the RV house and a hidden component the battery combiner relay.

The primary problem with this panel is the Inverter fuse which is a 1 by 1 by 3/4 DC power panelinch block mounted between the battery buss (leaving the main switch) and a buss bar that bolts to the back of the Inverter Switch.  Apparently, this bolt that holds that fuse between the two busses isn’t torqued properly and the design is such that heat builds up and the fuse insulation fails (adding to the problem).  As the fuse gets  hot, heat conducts up to the inverter switch and melts part of the switch until it fails.  There was even one report in facebook of this panel catching fire.

Recall

There is an NHTSA recall for this problem for various 2019 to 2022 models.  I personally don’t like the solution as covered in the recall.  If you have a 2000 watt inverter, the solution is to install a cable between the fuse and inverter switch (which won’t pipe heat directly up) as well as check the torque of the fuse bolt.  If you have a smaller inverter, they just check the fuse bolt torque.

I consider this panel to be a total fail.  In order to pull the panel to work on it, the only safe way is to disconnect the battery (usually recommended anyway) beause the support bracket comes very close to the main battery buss when removing the panel.  Fuses shouldn’t be buried behind panels.  The design of the fuse depends on a thin plastic insulator which fails as the fuse heats up which results in the bolt shorting the two busses which means there is no fuse.  Finally – the four DC circuit breakers are poorly supported and heavy wires are connected to them, also not supported/restrained, so sometimes just pulling the panel out and putting back in causes one of the breakers to physically break (happened to me once and also happened to a tech at Red Bay while he was replacing this panel).

The Replacement

The following describes MY solution.  I’m not recommending this for everyone.  It requires significant expense, tools and expertise most RVers would have issue with.

I designed a “replacement” for the
DC power components Tiffin/Lippert DC distribution panel.  It is all based on discrete components and thus takes up a lot more room.  It is amazing just how much stuff, Tiffin (Lippert) stuffed into that tiny panel – and not amazing why parts of the original panel failed so often.

Note:  some who are familiar with my story might say – you installed Lithiums and that overloaded the panel.  Nope.  Right out of the gate on our first trip, with the original Lead Acid batteries and original Magnum Inverter, anytime we used the inverter for a significant load (like the microwave), the inverter had fits and often shut down and the Spyder system rang a low voltage alarm.  We ended up using the generator any time we needed to cook.

When we started out with the lithiums – I checked the alternator rating: 150 amps.  I never saw the batteries charging from the engine more than 90 amps.  I believe this is because the lithiums were never mostly discharged.  We often used the generator when boondocking rather than the engine to charge.  One night we spent boondocking behind a restuarant.  We hit the road very early in the morning while still dark out after running the batteries down to below 40%.  As we took off, I looked at the charging rate and it was 120 amps into the batteries.  Add in headlights, heater fan and anything else – we had to be pushing the generator on the engine to its limit for the first hour.  I didn’t like pushing it that hard.  My solution was to install a Victron DC to DC battery charger.  This will limit the engine to house batteries to 30 amps, which is fine because we rarely need to charge up the house batteries quickly with the RV engine.  It should keep me from pushing the engine alternator so hard.

The Tiffin battery connect solenoid links the house and chassis batteries any time the engine is running or when the battery linking switch on the dash is depressed (also maybe when generator is running).  I didn’t want it connecting when the engine is running – the DC to DC charger takes care of that by monitoring the chassis battery voltage to determine when the engine is running.   I disabled the Tiffin logic by putting a switch between it and the solenoid.  Thus I can flip the switch and still use the dash switch to connect the batteries.  My inverter has a trickle charger to keep the chassis batteries topped off so I don’t need the generator function either.