Joined
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2,566 Posts
For my Peneth worth;
I too am a great believer in the theory that air will not get into a sealed system, without signs of a leak and that it is a case that the air has not been removed fully, from before the bike it left the factory. I back this up with the fact that we have two 2019 Dragsters (owned form new) with one having a good rear brake peddle and the other loosing it from. I have bled the rear brake twice in the traditional way (as per MV service bulletin), to have a good peddle and then to lose it again.
Yesterday, I put a compressed air brake bleeder on my rear caliper nipple and pulled through approximately 300ml of brake fluid (kept the reservoir topped up and only cracked the bleed nipple once). If there was any air in there previously, surely there should not be any in there now? I had no brake peddle before and have a good brake peddle now. The bike will stand, unused now until the weather gets better next year. I will occasionally check the rear brake peddle and I shall report back if it has failed again.
I too am a great believer in the theory that air will not get into a sealed system, without signs of a leak and that it is a case that the air has not been removed fully, from before the bike it left the factory. I back this up with the fact that we have two 2019 Dragsters (owned form new) with one having a good rear brake peddle and the other loosing it from. I have bled the rear brake twice in the traditional way (as per MV service bulletin), to have a good peddle and then to lose it again.
Yesterday, I put a compressed air brake bleeder on my rear caliper nipple and pulled through approximately 300ml of brake fluid (kept the reservoir topped up and only cracked the bleed nipple once). If there was any air in there previously, surely there should not be any in there now? I had no brake peddle before and have a good brake peddle now. The bike will stand, unused now until the weather gets better next year. I will occasionally check the rear brake peddle and I shall report back if it has failed again.