40 local farmers brought their tractors along to a recent dyno testing day hosted at Kearsley Agri Services’ workshop in Northallerton to find out if their machines were still firing as they should.

With a hog roast on offer, the day attracted 150 people to watch the Dimsport dyno test each tractor’s output at the PTO. Tractor sizes ranged from a little grey Massey Ferguson that registered 19hp at the PTO shaft, to the biggest machine tested on the day, a Massey Ferguson 8480, that recorded 359hp.

A wide variety of tractor brands were tested, including John Deere, New Holland, Valtra, Fordson and JCB, with some travelling up to 40 miles to take part. Kearsley Agri Services purchased the Dimsport dyno from distributor Avon Tuning, along with becoming an authorised agent for the professional remapping services earlier this year.

All attendees were treated to a hog roast courtesy of The HogFather, and the day also raised money for two charities through the dyno tests and a raffle – prizes were donated by Kearsley’s parts and services suppliers. The final total was £2,083.40, which will be equally split between Parkinsons UK and the Brain Tumour Charity.

Pete Kearsley of Kearsley Agri Services said the day couldn’t have gone any better. “We put on the dyno day to get people together and promote our dyno and remapping services. With a free hog roast, we are hopefully giving a little bit back to our customers who support us loyally throughout the year and showcasing our services to potential new customers.”

The importance of testing tractor outputs on a dyno to spot any health issues was highlighted when a John Deere 3350 registered a very under powered 65hp. After a quick inspection from one of the Kearsley Agri Services’ engineers, the tractor required the tappets resetting, timing on the fuel pump adjusting and altering the torque settings on the injection pump. After this, the tractor was retested and recorded 105hp.

“Demand for the dyno testing and engine remapping services are increasing every week, so events like this are a great way to demonstrate the end value to the farmer and talk to them in a relaxed environment,” concludes Pete Kearsley.