The trip, dubbed "Muriel the Medicycle", has been a year in the planning since the former member of the British Army's elite Royal Army Physical Training Corp's first 25,000km trip around Australia.

"What I saw in the far north west of Australia shocked me to hell," Mr Carey said.

The idea of putting together motorcycle ambulance Muriel came after he arrived and was accepted into a remote community in Western Australia.

"I'd run out of food and asked them if they had any? They had nothing," he said.

"When you are travelling on Peggy and loaded to the gunnels, there is no room for tins or packets of food, only water.

"A few hours later a woman called Muriel showed up, she had made me damper and brought me some corned beef.

"People in the southern states of Australia don't realise what is going on up there in the north and most of the communities south of Broome seem to be okay, but in the communities in the far north the situation is heartbreaking," he said.

"I have travelled as a combat medic all over the world and I have served in the south of Sudan and what I saw in northern Australia was much worse.

"I left the place in tears. I just didn't expect to see the level of deprivation and disease. How do you tell a child in a community like that they have no hope.

"That is what made me decide to go back," Mr Carey said.

A year later, Mr Carey has fitted Peggy out as a motorcycle ambulance complete with two comprehensive remote area first aid kits "that I will have to keep resupplied".

Mr Carey plans to leave Bibbenluke on Thursday, August 1, at 8am taking the route through Canberra, Dubbo then Charleville in Queensland.

"Once I get to Charleville I will travel to Cloncurry through the 'red centre' then north to Katherine and west toward the Kimberley and then to Wyndham.

"Wyndham was the first northern community I stayed with the first time I travelled there," he said.

"One of the things I will be taking with me is the ability to give first-aid, treat wounds and injuries.

"The health issues facing Indigenous communities are huge. There are so many treatable diseases like leprosy and I also saw a lot of what appeared to be syphilis," Mr Carey said.

"The eye conditions up there are horrendous, there is so much treatable blindness. I have to be a first aid provider and make people more comfortable.

"The other thing I plan to do, is get permission from the elders to document the situation and bring back proof."

Mr Carey also plans to deliver some simple health and hygiene education to the communities he visits and provide some simple recreation programs.

"One of the last things I am going to do is get them involved in sport. I am taking a football which they love, and a kit for making balloon animals, something I will do with the kids when I get there," he said.

Mr Carey said he has funded most of the trip himself.

"It has cost me thousands and thousands of dollars and I'm a pensioner, so most of the money has come from my superannuation," Mr Carey said.

In his effort to deliver desperately needed first aid to first Australians in the remote far north of Australia, Mr Carey has set up a crowdfunding webpage www.gofundme.com/muriel-the-medicycle.

"So far all I have managed to raise this year is $1500 - people don't understand and a lot of the time they don't care," he said.

Mr Carey said he planned to be away about three months with most of his time spent in remote areas.

"I plan to ride into remote communities where I plan to get my tent out and wait for people to approach me.

"Peggy is a little motorbike and that gets people interested, usually the children first and then the adults.

"I can't do much, but I will do what I can - my philosophy is 'deeds not words'," he said.