Forum Discussion

2500_Grunt's avatar
2500_Grunt
Explorer
Oct 04, 2013

Added Onan 4.0 to TT

Here are a couple of pic's of an Onan 4.0 BFA that I paid $250 for and then added to the rear rack of my 27' TT. I wired in a remote on/off start switch to the inside of the kitchen. I had a diamond plate cover made for it for roughly $200(from my measurements and cut outs) and I then secured it to my TT. Works great for running the A/c and microwave or anything else. I decided to not wire it into the inverter so I just need to plug in the shore power tio the outlet that I added to the inside of the enclosure. The clearance or air specs for the 4.0 are in place with the enclosure too so no safety concerns. Only complaint I have is that it did reduce the tongue weight of the TT and it doesn't tow as good as I wish b/c of it. The 4.0 BFA is about 235# and the cover adds another 30# or so. Previously, I had a 400# Yamaha Raptor 250 quad on a similar rack with around 600 miles on it with no issues other than the reduced pin weight issue. Before: http://img.photobucket.com/albums/v111/tnl/onan%20genereator/0505010944.jpg

Covered with tarp:http://img.photobucket.com/albums/v111/tnl/onan%20genereator/0505010944.jpg

After: http://img.photobucket.com/albums/v111/tnl/onan%20genereator/0505011350.jpg
  • I have a hitch haul on the back of my TT and when we took it on a 6000 mile trip I put my 4000 watt champion on the rack. It runs everything as well but if I keep it on the rack it vibrated the whole RV. Do you get that?

About DIY Maintenance

RV projects you can tackle on your own with a few friendly pointers.4,352 PostsLatest Activity: Jan 23, 2025