Derek up North

That's the way National chose to do it. Foolies on the drive axle. Other manufacturers used single on their drive axle.

I'd say it depends on if you pick the right phrase. This applies just as well:- "VEHICLE DESCRIPTION: MICRO-MINI MOTORHOMES BUILT ON TOYOTA CAMPER CAB-CHASSIS EQUIPPED WITH AFTERMARKET DUAL REAR WHEELS ON A REAR AXLE DESIGNED FOR SINGLE WHEELS."

National RV was the company that built Dolphins and Sea Breezes. Between 1979 and 1981 they built a few with a tag axle, as did a few other manufacturers.

National is long out of business. What to do about your foolies will probably be open to lengthy debate. I don't remember your situation/question/problem coming up before. Technically, it was recalled, since it's fitted 'with aftermarket dual rear wheels'. The complete paperwork for National. Axle Recall - National RV - RC-91V060-NN.PDF

FWIW, this is the version from the Sunrader Owner's Manual:-

December 1983 would quite likely be a 1984 model year. There was a styling change between 1983 and 1984. Front fenders & lights.

Well, the dash lights and tail lights are on the same fuse. Unless, of course, your previous owner did some creative rewiring! These are the 1986 fuses. Might be the same for yours. #17, 15Amp.

Can't tell anything about the rear axle until you remove the hubcap. My money is on a 5-lug axle lurking.

The 'Axle Code' doesn't actually show what axle it is (5-lug/6-lug). It's actually about the differential. Axle Code 'G292' => G -> 8" Differential 29 -> 4.10:1 Ratio 2 -> 2 pinion open diff http://www.brian894x4.com/Gearratiosanddiffs.html

038 / LT42 / G92 / W42 Color / Trim / Axle / Transmission Are you sure your plate isn't marked 'G292'?

Here's your model:- https://toyota-usa.epc-data.com/pickup/rn44l/2505/

That's my opinion ONLY, of course! Others love shiny SS. I prefer money in my pocket.

Your tires (Primewell PS580) and size (P195/75R14) are not normally recommended for motorhome service, though for the (assumed) light weight of your MH will be OK as long as the inner sidewalls aren't too close to allow rubbing or cause tire overheating.

Looks aren't everything. There were several versions of 'foolies'. Without removing the wheel you've posted to confirm, I strongly suspect this is what you'll find hiding behind the outer wheel. Unfortunately, they're still foolies, loading the axle in ways not designed for.

The 'Best' choice is to remove them and bed them in fresh butyl tape.

The original fasteners were nothing exotic. Replace with new and they'll probably last another 30-40 years.

To do it to 'perfection', you can buy small pots of 'Gel coat'. Assuming the 'chip' isn't too deep. Pretty runny, so several thin coats would be needed for overhead use. Not cheap stuff. Or you could use automotive body filler and paint.

From the Winnebago Owners Manual. 1992 Spirit Owners Manual.pdf

Thanks.

Though it's not a Toyota, it could quite easily be one.

Though probably politically incorrect to ask these days: 'How saggy is you rear end'?

Dolphin/Sea Breeze were the only ones to offer a 'body kit' starting in 1991. Looks nice, the parts are molded plastic and virtually impossible to replace when they break.

Most gas stations have a box of gas caps that customers have left behind on the pumps. It never hurts to ask if you can have a rummage.

For thickness, I believe I saw 0.024" mentioned.