26Appendix B: Elastomer limitsRider weight Elastomer60-128lbs (4-9 stone, 27-58kg) Yellow120-220lbs (8.5-15.5 stone, 54-100kg) Red148-275lbs (10.5-19.5 stone, 67-125kg) GreenYour elastomer will also depend on your riding style, terrain and other factors. If you ride on rough terrain or rideaggressively, you may benefit from a harder elastomer. If you are a leisurely rider, who rides predominantly on smoothtarmac, you may be able to use a softer elastomer. Note: you may need an elastomer that is one grade harder if you arecarrying any significant load.If you are a light rider and have your suspension setup soft it is advisable to adjust it to a firmer setting and change for aharder elastomer if necessary before allowing a significantly heavier rider to sit on your trike, otherwise permanent damageto the elastomer may occur.Appendix C: Tyre PressuresPSI BAR PSI2 29.030 2.12.5 36.340 2.83 43.550 3.43.5 50.84 58.060 4.14.5 65.370 4.85 72.580 5.5 80.06 87.090 6.26.5 94.3100 6.97 101.57.5 108.8110 7.68 116.0120 8.38.5 123.3130 9.0 1309.5 137.8140 9.7