If I use 25% of total travel it would be 40 mm rider sagĢ0% of that would be 8 mm That would be OK with me. Cogent said they shoot for 33% of total travel for rider sag. I was using 30% of full travel as I like a softer ride. Rider Sag - 20-30mm (race), 30-35mm (street) (25-30% of Full Travel)įree Sag - 5-10mm (extremely light bikes use less) (15-25% of Rider Sag) Spring Rate too firm - Rider Sag OK, but too much Free Sag Spring Rate too soft - Rider Sag OK, but too little or no Free Sag Spring Rate OK - Both free and rider sag within acceptable range. Note - It may help to set all the slow speed damping adjusters to full open when setting sag. Rider Sag = Measured sag of bike and rider w/ rider and rider's gear.įree Sag = Measured sag of just the bike, no rider, no rider gear. Here is where I am getting my sag recommendations. Here is a link to the Penske chart and to a thread on here that I found most helpful.įirst off thanks for the reply. I want to get to 12 mm static and 48 loaded. My sag numbers with the 900 were 12 mm static and 31 mm loaded. (still an educated guess)Ġ1096-19 (70 N/mm) for rider between 30/70KgĠ1096-24 (80 N/mm) for rider between 50/90KgĠ1096-29 (90 N/mm) for rider between 70/110KgĠ1096-31 (95 N/mm) for rider between 80/120KgĠ1096-34 (100 N/mm) for rider between 90/130KgĠ1096-36 (105 N/mm) for rider between 100/140KgĠ1096-39 (110 N/mm) for rider between 110/150KgĠ1096-41 (115 N/mm) for rider between 120/160KgĠ1096-44 (120 N/mm) for rider between 130/170Kgīefore I did I contacted Cogent Dynamics and he said they would recommend a 650 lb for their shock but his tech stated that Penske shocks use stiffer valving and thus need a heavier spring. (8.2 x 56 = 459) So I was going to order a 600 lb spring based on this Ohlins chart Bully posted. The stock rear spring is an 8.2 kg/mm which equates to a 459 lb spring. Somethings fishy here as the 1000 and 650 should be close in rear spring rate.Īfter reviewing some great threads and chatting with Motocanada on this site I was ready to order a much lower spring rate. Interesting thing is I noticed on the chart for a DL650 it recommended a 550 lb spring for my weight.

Could not get close to the sag numbers I was seeking. I ordered a 900 lb spring and it was too stiff as well although the chart says it would be 1 step soft. I found a shock spring chart for Penske and for my weight it recommended a 950 lb spring. Installed the shock and it was way too stiff for my 225 lb weight. I bought a Penske 8983 That came with a 7 inch x 1000 spring.

Ohlins spring chart pdf