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Recent content by davidtire
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Premature Ozone Cracking
Recycled Rubber - The compound has powdered tread peel. Tires are stored outside next to competition. Competition tires are performing well. Ozone - I have had several chemists and consultants view tire pieces. Consistently get, "Yes, that is ozone," when looking at the tires and "No way...- davidtire
- Post #9
- Forum: Rubber engineering
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Premature Ozone Cracking
Tires are stored outside. There is limited distortion. Tires are four deep on a skid. Shore A spec hardness range is 57 to 61.- davidtire
- Post #5
- Forum: Rubber engineering
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Premature Ozone Cracking
Tires are R1 irrigation/rear tractor traction pattern. Cracks are showing up throughout tread and sidewall.- davidtire
- Post #3
- Forum: Rubber engineering
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Premature Ozone Cracking
Making bias tires with a 60 natural 40 sbr N299 tread compound. 4.5 phr 6PPD and Wingstay combined. Two phr blended wax. 1 TMQ 2 sulfur 2 TBBS. Some tires are cracking horribly within 3 months of being mounted and only mounted on a rim, never used, loaded or flexed. Any ideas about what...- davidtire
- Thread
- Replies: 8
- Forum: Rubber engineering
