Flats soon after use or trouble removing/installing tube
Inspect for rim strip misalignment or tire bead issues. Use proper tire lever technique; if tube seems defective out of box, contact ENVO with photos for replacement.
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Tube fails shortly after starting use
Inspect for production flaw vs. puncture. Replace tube; request warranty replacement if obviously defective (not regular puncture).Recurring flats, especially rear tire; likely puncture or rim tape issue
Inflate using included valve extender. Inspect for sharp objects/rim tape issue. Replace tube if punctured. Normal flats are not covered by warranty.New or replaced tube punctures quickly
Inspect rim tape, check for sharp debris/glass. Confirm correct tube/tire size. If new tube fails, they may replace under warranty per attached policy.Some bearings feel gritty or fail soon after use—often only inner bearings are bad
Turn axle by hand with wheels off ground. If grinding/sticking felt, remove axle and visually inspect all four bearings. Replace damaged ones. ENVO can provide warranty bearings as needed.What is Head tube angle, seat tube angle, stack, and reach of D35 and ST
Please refer to the following table for the head tube angle, seat tube angle, stack, and reach values. A= Reach B= Stack C=Head tube angle D= Seat tube angle A B C D D35 – 20’’ 400mm 682mm 71 72.6 D35 – 18’’ 377mm 681mm 71 72.6 D35 – 16’’ 331mm ...