Ronstan Dinghy Blocks S15 & S20

Ronstan re-launch the high performance Series 15 Ball Bearing Utility Blocks & Series 20 Ball Bearing Multi Lashing Orbit Blocks

Ronstan Series 15 Blocks

The smallest and lightest ball bearing blocks available. Featuring stainless steel ball bearings, stainless steel side plates, and precision moulded acetal sheaves, Ronstan Series 15 Blocks provide impressively high working loads and low friction in a small 15mm package. A unique sheave profile is designed to keep single braid lines centred, while tight manufacturing tolerances keep even the smallest lines from getting jammed between the sheave and side plates. 

A wide array of configurations adds to the versatility of the range, making them ideal for various small boat and dinghy applications as well as control lines, shock cord tensioning systems, and more. The highest working loads in their class make Ronstan Series 15 blocks popular on performance dinghies like Moths and 505’s.

Dinghy sailors no longer need to consider a trade-off between performance and weight, according to Ronstan designer Albert Mahoney. “Our Series 15 range of high-performance dinghy blocks is the smallest we’ve ever made – and the smallest on the market,” he says. “In fact, if you try to make a smaller block than this one you just won’t have enough material to absorb the heat energy these blocks encounter in competitive use. Our lab and field testing by team sailors proved as much.”

A precision moulded acetal sheave running on stainless steel ball bearings is the key, Mahoney explains,
saying that is what provides the high performance and low friction that dinghy sailors need. The blocks also feature a clever exit block design with single piece housing and flush finish rivet to minimise cut-outs and make installation easier.
“This range is perfect for all dinghies from Optimists to foiling Moths,” Mahoney adds, pointing out that
the blocks come with a variety of attachment options from through-hull to saddles and soft lashings.

Ronstan Series 20 Multi Lashing Blocks

Small lashing blocks are becoming increasingly popular on modern performance sailboats for their relatively light weight, high working loads, and inherent flexibility at the point of attachment. Their ability to be lashed to various connection points in multiple ways enhances their usefulness for a wide range of onboard applications.

Available in single, double, or triple sheave configurations, Ronstan Series 20 Lashing Blocks are perfect for creating powerful purchase systems on highly loaded control lines. For even greater strength, High Load versions with stainless steel sheaves and ball bearings are offered in both single and double sheave models.

For more information on Ronstan and other products, please contact the Sales Team here.