glbtrottr Posted April 3, 2023 Report Posted April 3, 2023 A friend here in California with a G model needed the clutch in his speed brakes replaced. - he’s an aerospace engineer and IA.Precise doesn’t sell parts anymore, opting only for $4000 as a flat overhaul fee. Need the little spring? $4000. For that much cash, it’s better spent learning alternate methods of speed management. I am all about supporting vendors, but seriously? No. Sent from my iPhone using Tapatalk Quote
DanM Posted September 26, 2023 Report Posted September 26, 2023 When Mooney shopping, is there an easy way to determine if the speed brakes are pneumatic or electric? Would the presence of a dedicated circuit breaker for the speed brakes indicate they are electrically powered? (Pneumatic brakes probably need power for the switch but maybe not enough for a dedicated breaker?). Thanks. Quote
LANCECASPER Posted September 26, 2023 Report Posted September 26, 2023 1 hour ago, DanM said: When Mooney shopping, is there an easy way to determine if the speed brakes are pneumatic or electric? Would the presence of a dedicated circuit breaker for the speed brakes indicate they are electrically powered? (Pneumatic brakes probably need power for the switch but maybe not enough for a dedicated breaker?). Thanks. What year is the one you are looking at? Quote
231LV Posted September 27, 2023 Author Report Posted September 27, 2023 7 hours ago, DanM said: When Mooney shopping, is there an easy way to determine if the speed brakes are pneumatic or electric? Would the presence of a dedicated circuit breaker for the speed brakes indicate they are electrically powered? (Pneumatic brakes probably need power for the switch but maybe not enough for a dedicated breaker?). Thanks. turn on the Master and throw the speed brake switch....if they work, they are electric, if not, vacuum-driven 3 Quote
kortopates Posted September 28, 2023 Report Posted September 28, 2023 Even easier to just ask the owner!Sent from my iPhone using Tapatalk Quote
natdm Posted September 28, 2023 Report Posted September 28, 2023 On 9/26/2023 at 5:22 PM, 231LV said: turn on the Master and throw the speed brake switch....if they work, they are electric, if not, vacuum-driven 25 minutes ago, kortopates said: Even easier to just ask the owner! Sent from my iPhone using Tapatalk Even easier than that, electric ones have a placard below the speed brakes stating they are in fact electric. Page 21: https://drive.google.com/file/d/1BjCg2ZTXPlRzAYdYzkFdc2Sa4uxqtdvz/view?usp=sharing from Precise Flight Speed Brake install guide (Mooney) Quote
Rick Junkin Posted September 28, 2023 Report Posted September 28, 2023 45 minutes ago, natdm said: Even easier than that, electric ones have a placard below the speed brakes stating they are in fact electric. Careful with that one. My brakes are vacuum operated and when the airplane was repainted by the previous owner that placard was mistakenly put on the wings. This caused some confusion for my installer during my panel replacement as to whether the vacuum system should be removed. I'm casually working on sourcing a diaphram replacement as I'm sure I will need one at some point, but the brakes still work work great! Cheers, Rick 1 Quote
natdm Posted September 28, 2023 Report Posted September 28, 2023 1 hour ago, Rick Junkin said: Careful with that one. My brakes are vacuum operated and when the airplane was repainted by the previous owner that placard was mistakenly put on the wings. This caused some confusion for my installer during my panel replacement as to whether the vacuum system should be removed. I'm casually working on sourcing a diaphram replacement as I'm sure I will need one at some point, but the brakes still work work great! Cheers, Rick That seems crazy. Quote
ArtVandelay Posted September 28, 2023 Report Posted September 28, 2023 Even easier than that, electric ones have a placard below the speed brakes stating they are in fact electric.Js don’t have placard probably because they only came with electric (they were an option in the later years). Quote
Fly Boomer Posted September 28, 2023 Report Posted September 28, 2023 5 hours ago, kortopates said: Even easier to just ask the owner! Maybe. Quote
LANCECASPER Posted September 28, 2023 Report Posted September 28, 2023 5 minutes ago, ArtVandelay said: Js don’t have placard probably because they only came with electric (they were an option in the later years). Precise Flight Speed brakes first became a factory-installed option on the J and K (the last year of the 231 K) Mooneys in 1985. These were vacuum operated and in 1988 were available on the L model (Porsche) and in 1989 and 1990 (and early 1991 if I remember correctly) they were standard on the M. The electric speed brakes didn't get STC'd for Mooney until 1991. 1 Quote
Ian Morcott Posted January 17 Report Posted January 17 I am switching from the vacuum system to an electric version Series 2000 due to a panel change and I have a fully functional system available for sale. Make me an offer. Quote
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