Aerodon

Here's a set of OEM 1.5" pedal extensions for $120. If you want a set of 3" pedal extensions and understand the requirements for an owner produced part, I can make up a set of 3" extensions for you. Aerodon

There are several connectors in the circuit from the avionics relay to the ground. If any one of them were open or intermittent then the switch would not ground and the avionics would stay on. Some switches have 2 poles, only one in use. Swap the ires over to the other side? But if there is a fault in the small control relay, this could provide an alternate path to ground to hold the avionics relay in the on position. And the avionics relay could be sticking. Aerodon

You can calibrate the JPI OAT in the setup menu. Aerodon

Are you familiar with the Charlie Weights on a 231/252? Is there a shelf and holes pre-drilled into the aft bulkhead an a M20J? Much as I don't like adding useless weight, this is a very effective way of fine tuning your CG. And for the people contemplating upgrades - consider remote boxes for transponder, traffic, stormscope etc., especially if you already have the avionics shelf in the back. Not only does it help your CG, I think it makes the overall installation easier because things are not as cramped behind the panel. Aerodon

In my M20K there are 4 son alerts right next to the speaker. Stall, Gear, Altitude Preselect Alert, AP Disconnect.

USD4900 Panel mount

Hi Lee, Good first try and I can see you put a lot of effort into it. The overall layout hurts my eyes a bit, a bit of a random layout. My guess is you are two or three trial versions away from a final cut. I am on Rev_10 for M20J's and K's, and each one is a little better. Mooney used 0.100" and had very little material between th instruments. Tightest layout out of all the manufacturers and thickest panel. And most instruments have an 0.090 bezel anyway. 2024-T3 works well. And it looks like you are not doing the 1/2" radius at the bottom? Aerodon

I can't ever remember the alternator output pegged at 60A, never mind 70. Especially with LED instead of halogen LL's. There might be a bump when selecting gear up or down, or after starting. So really no benefit or problem installing a 70A alternator, and unless you reach 60A you are not going to trip the breaker. And breakers are notoriously inaccurate anyway. And its not like you are changing from a 40A to 70A alternator - I would look at the aircraft wire sizing chart, you may well have a big enough wire for a 70A alternator already, then go ahead and change the breaker? Aerodon

Agreed, there may be more of a smoothness benefit on a 4 banger, but I find the 2 blade smooth enough on the TSIO360. (and I have 3 blades on my seneca, so have compared the two). And you are doing a biased comparison on the useful load comparison. Try a W&B with 11lb of charlie weights and your current 3 bladed prop and the benefit is more like 36lbs. Try it again with a 2bladed prop. And to be clear, I like the MT props, and generally take whatever little performance and weight reduction I can. I just don't like their service requirements, cost and logistics. Aerodon

Can you install 'Charlie Weights' in the tail of a 201 or is it a 231 thing? 11 lbs in the tail is a lot better than 50 lbs of unnecessary baggage. I went with a new 2 blade prop instead of any of the 3 bladed options. My opinion, MT's are very nice but I don't like their service interval and repair an overhaul price. And overhaul locations. I think you are just setting yourself up for much higher future costs with very little performance benefit. Aerodon

You need to post your serial number for an exact drawing. My 252 has a 70A breaker feeding the switch bus, and then the switches are combine CB/switch. So you may be looking for a breaker that does not exist. Aerodon

I now have a GTX335 or GTX345 and a PMA450 to go with this stack. Aerodon

Us dumb canucks have to install diversity transponders that transmit a signal upwards to a barely working iridium satellite network. The airliners that really need to install them for the vast areas on non radar environment are able to get fleet exemptions. So I have a perfect as removed GTX345 transponder with a new install kit for sale, can supply with either a config module or a GAE12 encoder module. Aerodon

I did it in my Seneca before repainting. Found an airplane with the correct parts, installed the filler door and shelf, along with the fuselage doublers. Don't like the OEM push pull cable for on/off, but what can you do. The mountain high system is better, but once you start deviating from the factory design, the paperwork gets more difficult. Aerodon

I think you are chasing your tail. First, you have a new engine, go fly it hard for a while, only concern is not to let the temps go over 400. Then check which cylinder might have a different probe location, just so you know. Then go learn all about the Gami 'spread'. Once you understand which cylinder peaks first, 2nd, 3rd, 4th and how the EGT's and CHT's follow one another (or not) you will start to understand why one cylinder is hotter than the rest. Is more likely unbalanced fuel and air rather than cooling and baffles. And then cylinders are just different, both in manufacture, location on the engine, baffling, airflow etc. I don't think you have an unreasonable spread at all. Aerodon

OK, found a drawing for the B&D gauge - it shows the CDT as a thermistor probe. >>I understand it is a K" type "thermistor" style. Max temp is 400. No, that's a contradiction, it's one or the other. The TIT is a type K, the CDT is a thermistor. Aerodon

The M111 is a JPI type K probe. Same as the EGT probes with a difference diameter clamp. I have them in stock. A002 - I'm not familiar, got a picture? Aerodon

Here are super cub switches, along with a pushbutton on the panel. I think a starter solenoid needs about 1A to hold, but I would want a really robust one so that there is never any doubt Seneca magneto switches are rocker style with a guard. I think they are rated at about 10A. Anyone know what sort of rating a magneto needs for the grounding to work properly? Once again I would want something robust, nothing that a light bump could break. Aerodon

It is not me, send me an email from a secure address to the email address you started communicating with me on. Aerodon

Not true, something is wrong here. You have my email, the correspondence started and then went dry.

Ohboy, sounds like @fritz1 got scammed? Aerodon

I have not installed a 275 engine monitor yet. I see it has two ammeter inputs so can be set up for 2 alternators or alternator/load. I see it has Oil T and two generic temperature inputs. TIT and IAT (induction). And I assume it gets OAT from the GTP59 on the attitude indicator GI-275. Have I thought this through properly. Aerodon

I have some good used master cylinders removed from a 1986 252 for the Encore upgrade. $600 for the pair. I have an extra set of 10-25D master cylinders (have not got around to installing co-pilot pedals) from a 1996 M20M. $old for the pair. I have a set of tubes for the co-pilot pedals - make me a decent offer to persuade me not to install in my plane. I think I have the pedal arms, bell cranks and pedals to build up a set. I also have a set of pedals with OPP pedal extensions..... Aerodon

OK, this is a little goofy. I have some NOS (new old stock) pucks from 2014 and some good used pucks from 2015. My main gear pucks look pretty good, my nose gear needs replacing, so I only need 3. Bear in mind the shelf life of rubber components depend on a lot of variables. And the service life, even more. The pucks on the nose gear carry about 250 lbs each when parked, the main gear about 220. I'm sure the main gear gets exercised more on landing. Given the price on new ones, someone might be interested in some NOS or good used ones? Aerodon

No, you leave the OEM probe alone and use the s[arkplug gasket probe for the JPI. No locktite, maybe use spark plug thread lubricant so they don't get locked in. Aerodon