Super C Forum

Diesel Super C owners writing down the miles, the chassis work and what it all cost.

Journal/About

About Super C Forum

Super C Forum went up in November 2025 for people who drive a motorhome built on a medium duty truck and keep getting answers meant for a gas Class C or a 45 foot diesel pusher.

Super C here means a Class C style coach on a heavy chassis: the Freightliner M2 106, the Ford F-550 and F-600, and the odd International. Jayco Seneca, Entegra Accolade, Thor Magnitude, Dynamax Isata 5, DX3 and Europa, Renegade Verona and Ikon, Nexus Ghost. If yours has a cab over bunk and a diesel under a real truck hood, you are in the right place.

The forum is member-run. It is looked after by Bev T., who posts as mod_bev_t. Bev drove a propane route around Kootenai County for nineteen years, which means she has opinions about air brakes, winter fuel and people who back up without a spotter. She and her husband run a 2017 Isata 5 on the F-550 and spend February somewhere warmer than Idaho. She answers the mailbox herself, slower in the summer.

Who pays for it

Bev does. Hosting is about ten dollars a month and the domain was twelve for the year. No ads run on any page, no link carries an affiliate code and nobody has paid to have a thread written, moved or pinned.

House rules

  • Coach, model year, floorplan and chassis in your first post. A Seneca on the M2 and a Magnitude on the F-550 have different brakes, different engines and different answers.
  • Buying reports include what you paid. If you leave the number out, a mod will ask for it.
  • No selling coaches or parts in threads. There is no classifieds board and there will not be one.
  • If you work for a dealer, a lender, an auction, a transport outfit or a manufacturer, say so the first time it matters.
  • Licensing and brake questions get real answers, and then you check them with your own state. Nobody here is your DMV.
  • Be decent. The Freightliner people and the Ford people are going to share this place.

What it is not

Not a dealer, not a service department and not a chassis manual. When somebody gives you a torque spec or a tire pressure, check it against your own door placard and your own weigh ticket before you trust your family to it.