HB D815 optional clutch springs & hub carrier plates
HPI Racing have new optional parts for the HB D815 1/8th scale buggy available in the form of different clutch springs and rear hub carrier camber link plates. Starting with the clutch springs, beside the standard 1.0mm spring there are also softer 0.9mm and harder 1.1mm variants available to adjust the clutch engagement to your liking. Generally spoken a softer spring makes for earlier, low-RPM engagement while a harder spring results in higher-RPM engagement with the latter resulting in harder acceleration while a softer setting makes for a more controlled take-off.
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