Flexible panel report.
Since there seems to be continuing interest in our solar
The two 40 watt panels seem to do the job for us, supplying adequate power for LED lamps, water pump, TV, Sat dish, occasional electric blanket and charging of computers and the like.
We've had our 80 watts of Solar panels for about 10,000 miles of travel, been buried in two snow storms and seen months of rain. They are still solidly attached to our roof and have not had a single issue, either minor or major.
Many of the concerns expressed in this long post, all reasonable concerns, have turned out not to be problems:
The panels stuck to the Red Max Pro 3; moisture under the panels, if any, has not been a problem; the panels have not increased the inside temperature to any noticeable degree; there's no visible heat damage to the gel coat; neither high outside temperatures or snow have done any damage; there has been no signs of panel lifting; though we've had no significant branches fall
on the panel, we've had numerous hits by acorns and the like without a scratch; the thru hull fitting has never leaked and we've seen many inches of rain in the NorthWest.
The only negative is the panels cost, higher than the more traditional variety.
Another less obvious advantage is no fear of theft, only people who read this site are even aware that we have solar panels.
We choose not to have tiltable solar panels, not wanting the bother of having to tilt the panels and not wanting to impact the smooth surface of the trailer. As well with our travel philosophy of minimizing loose items we decided against internally stored panels.
On this long 11 month, 14,000 mile trip we like the fact that the panels are charging the battery
as we drive and not stored in the trailer or our 2004 Honda CRV.
We are about to install a similar installation on our son's 1977 Scamp
13. He has chosen a single 70 watt panel that should fit nicely on the Scamp