03 Feb, 2011 01:00 AM
BLIND cyclist John Domandl, 50, admits there is an element of "crazy" in his plan to race down rocky bush tracks on a mountain bike at 60km/h with only 20 per cent vision.

Domandl will attempt the 12-hour section of the JetBlack 24 hours Sydney endurance race at Wisemans Ferry this weekend, which will test the former Paralympian, ironman and ultra-marathon runner's limits.

Newcastle cyclist Tony Brown will be Domandl's "eyes" during the two days of racing at the Del Rio Resort.

Domandl and his pilot will ride a $12,000 US custom-built tandem bike he has affectionately dubbed "Big Red" over the 9.8-kilometre circuit.

The pair, who have dubbed themselves Team Tandem, will ride for six hours a day and camp overnight in between.

Domandl was born with the degenerative eye condition retinitis pigmentosa, which has slowly deteriorated his eyesight. An active lifestyle helped him delay the inevitable until five years ago when he lost his peripheral vision.

Brown and Domandl formed their partnership through social riding group Newy Cogheads.

"A lot of communication goes on with the rider and the pilot up front," Domandl said.

"If I don't lean properly, if I lean the wrong way, we are into a tree," he said.

"You are roadkill if you come off."

Big Red is branded with the words mateship, sacrifice, endurance and courage, which are displayed on the Kokoda Track to symbolise the Australian soldiers' struggle there.

Under Brown's seat are the words mateship and sacrifice.

"He's a good mate and sacrifices a lot of his time to help me," Domandl said. "On the back where I sit is courage and endurance.

"Courage should be a bit bolder, I think."