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Firewall Heat Insulation: Difference between revisions
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* It is caused mainly by hot air blowing at the valve even when the valves are closed (bypass mode). Heat-shielding the firewall area around it addresses that. Also putting heat shield material between the valve and the firewall. | * It is caused mainly by hot air blowing at the valve even when the valves are closed (bypass mode). Heat-shielding the firewall area around it addresses that. Also putting heat shield material between the valve and the firewall. | ||
* At some point, Vetterman, who makes the RV-10 stock exhaust, addressed the issue, and reduced the BTU output of the heating elements. Therefore less-hot air blows against the closed valves and the heating capacity is still plenty for the RV-10 when the valves are open. There are builders with everything stock and no "hot tunnel" issue. When exactly that change was made is TBD, some years before 2022 at least. | * At some point, Vetterman, who makes the RV-10 stock exhaust, addressed the issue, and reduced the BTU output of the heating elements. Therefore less-hot air blows against the closed valves and the heating capacity is still plenty for the RV-10 when the valves are open. There are builders with everything stock and no "hot tunnel" issue. When exactly that change was made is TBD, some years before 2022 at least. | ||
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