Vlakvark Posted November 2, 2016 Report Posted November 2, 2016 Are all the speedbrakes red. I think mine got painted white and that is why they so slow to close. Also do they all use elecrical source or are some using the vacuum pump. Thanks Quote
BradB Posted November 2, 2016 Report Posted November 2, 2016 I've only seen red ones. I believe all the newer ones are electric. There are some older ones that are vacuum. Better wisdom will be on the way soon, I am sure. Brad Quote
carusoam Posted November 2, 2016 Report Posted November 2, 2016 Really old uses a cable, sort of old uses vacuum. Early 90s were anodized red and electric... PP thoughts, -a- Quote
Vlakvark Posted November 2, 2016 Author Report Posted November 2, 2016 So for a M20k 231 it should be vacuum? 1 Quote
DonMuncy Posted November 2, 2016 Report Posted November 2, 2016 No, for the 231 they are electric. And anodized red. Quote
carusoam Posted November 2, 2016 Report Posted November 2, 2016 See if this can help you... https://www.preciseflight.com/general-aviation/shop/speedbrakes/products/speedbrakes-mooney/ You POH should have an operations section for them as well. They probably show up in the limitations section too. Best regards, -a- Quote
Oldguy Posted November 2, 2016 Report Posted November 2, 2016 On my 84 J they are the vacuum-powered speed brakes and are anodized red. If you have to have the engine or the standby electric vacuum pump running to activate them, they are 99% sure to be vacuum powered. The vacuum diaphragm is in a unit in the belly of the plane and activates two cables, one running to each speed brake. The cable can typically be seen in the wheel well for each of the mains. If all else fails, you can remove the inspection panel below one of them and see if it has a cable or electric wire running into it, but as Anthony states, there should be a section in the POH with them. Mine show up in the "Supplemental Data" section. 1 Quote
KLRDMD Posted November 2, 2016 Report Posted November 2, 2016 15 hours ago, DonMuncy said: No, for the 231 they are electric. And anodized red. They are vacuum on my 1985 231 that's about 10 from the last serial # made. Quote
kortopates Posted November 2, 2016 Report Posted November 2, 2016 Electric speed brakes did not exist when the M20K's were produced. But speed brakes were not standard on the 231, unlike the 252, so many were added to 231's after they left factory and could be vacuum or electric. All 252's were factory equipped with vacuum. Good chance the Encores coming years later are electric. By now I suspect we are seeing vacuum speed brakes replaced with electric ones since the rubber vacuum canister is unobtainable Sent from my iPhone using Tapatalk Quote
Oldguy Posted November 3, 2016 Report Posted November 3, 2016 22 hours ago, kortopates said: .... By now I suspect we are seeing vacuum speed brakes replaced with electric ones since the rubber vacuum canister is unobtainable Sent from my iPhone using Tapatalk For just a slight up-charge. Brittain has said they can provide the rubber diaphragm but have yet to deliver any. A 252 at my home drome is on the list since his are INOP at this point. 1 Quote
Bob_Belville Posted November 3, 2016 Report Posted November 3, 2016 Sort of in keeping with manual gear and hydraulic flaps, when Speed Brakes were added to N943RW in 1997 the owner chose manual Speed brakes by Precise Flight Inc STC SA5708NM. The actuator is the lever on the floor, beside the trim wheel. We lube at annual but have never had to do more. I wonder what experience other owners of manual SB have had? 2 Quote
Pritch Posted November 3, 2016 Report Posted November 3, 2016 Mine are hydraulic on my 84K, but they are PowerPac Spoilers, from Spoilers Inc. Pritch Quote
kortopates Posted November 4, 2016 Report Posted November 4, 2016 (edited) 1 hour ago, Pritch said: Mine are hydraulic on my 84K, but they are PowerPac Spoilers, from Spoilers Inc. Pritch Interesting, I have not seen any of the PowerPac Spoilers on a Mooney - perhaps they were done via a field approval. They appear even more expensive than Precise ones too. Turbo Plus did make a identical looking hydraulic hinged brake for the Mooney years ago. I have only seen one installation. Edited November 4, 2016 by kortopates Quote
DonMuncy Posted November 4, 2016 Report Posted November 4, 2016 On 11/2/2016 at 3:06 PM, KLRDMD said: They are vacuum on my 1985 231 that's about 10 from the last serial # made. I'm really amazed at that. I thought mine were factory. I will have to go back through my logs. Sorry for the spread of erroneous info Quote
Pritch Posted November 4, 2016 Report Posted November 4, 2016 2 hours ago, kortopates said: Interesting, I have not seen any of the PowerPac Spoilers on a Mooney - perhaps they were done via a field approval. They appear even more expensive than Precise ones too. Turbo Plus did make a identical looking hydraulic hinged brake for the Mooney years ago. I have only seen one installation. tmp_20129-spoilers-AFMS5316806.pdf this is from a thread last yr on MS Pritch 1 Quote
Pritch Posted November 17, 2016 Report Posted November 17, 2016 On 11/3/2016 at 5:39 PM, kortopates said: Interesting, I have not seen any of the PowerPac Spoilers on a Mooney - perhaps they were done via a field approval. They appear even more expensive than Precise ones too. Turbo Plus did make a identical looking hydraulic hinged brake for the Mooney years ago. I have only seen one installation. Finally had time to pick up my log books after my annual and they are definitely Spoiler Inc. 'BUT' the hydraulic power pac has a TurboPlus sticker on it. Pritch Quote
jrwilson Posted November 17, 2016 Report Posted November 17, 2016 http://www.skywagons.com/sites/all/libraries/juicebox/full.html i think these are spoilers on a 20k for sale...I've never seen them in person. I've only seen precise flight style, like civilized people use Quote
jrwilson Posted November 17, 2016 Report Posted November 17, 2016 My link didn't work, but I persevered so you could see them anyway... 2 Quote
kortopates Posted November 17, 2016 Report Posted November 17, 2016 Finally had time to pick up my log books after my annual and they are definitely Spoiler Inc. 'BUT' the hydraulic power pac has a TurboPlus sticker on it. Pritch Interesting, it's looking like Turbo Plus speed brakes were originally Spoiler Inc brakes.No wonder they were expensive though since they automatically retract in a stall and at approx 2/3 of full throttle. Our Precise speed brakes sure don't do that.Sent from my iPhone using Tapatalk Quote
bradp Posted November 17, 2016 Report Posted November 17, 2016 Maybe back off the Vref by a few percent. Don Kaye has a vref per landing weight that makes a lot of sense. Sent from my iPhone using Tapatalk 1 Quote
N5756v Posted November 17, 2016 Report Posted November 17, 2016 My speed breaks are the same color as my airplane ........ it's an 84 231k but I think she's been painted Quote
Pritch Posted November 20, 2016 Report Posted November 20, 2016 On 11/16/2016 at 11:34 PM, kortopates said: Interesting, it's looking like Turbo Plus speed brakes were originally Spoiler Inc brakes. No wonder they were expensive though since they automatically retract in a stall and at approx 2/3 of full throttle. Our Precise speed brakes sure don't do that. Sent from my iPhone using Tapatalk I have now added checking the spoilers to my check list. I deploy them during my walk around and lift the stall switch and down they go. Pritch 2 Quote
carusoam Posted November 20, 2016 Report Posted November 20, 2016 Thanks, Pritch! I need to look that inter-connection up. Best regards, -a- Quote
Miguel Posted January 15, 2017 Report Posted January 15, 2017 Hello, does anyone have any turboPlus speed brakes maintenance info?. and also the pictures of the spoilers install doc. I have a 1980 M20K located in Spain. Many thanks, Miguel SA3341NM_spoilers_AFMS.pdf SA3341NM_spoilers_Install.pdf SA3341NM_spoilers_Operating Bulletin.pdf SA3341NM_spoilers_STC.pdf Quote
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