Steve
Many thx.

Did you need to reset time or does the chip come preinitialized?

I used to have a business in the 1980s and 1990s selling EPROM chips for PCs that had special scientific character sets. So this looks like a trip back in time.

Can folks advise where I get a VM1000 battery replacement? I saw a post by Lance Murray on the need to replace battery, but not where to get this.

Also, are there posts on resetting the tach value so that it doesn't zero out?

many thanks

peter r

Steve I already conceded that my approach is only approximate but it seems to work pretty well under the assumption that a new battery would test at 100 percent. I’ll check with the Concorde tech support opinion that. If they support my assumption then I think I’ve got something useful. As I said, n...

It is not correct that a cylinder with a low compression alwaysneeds to be replaced. The compression test is not reliable. At the least, if you have a low compression rating, you should fly the plane for at least an hour and take another compression test with a warm engine. typically, this reverses ...

Also, if the plane was really sitting idle for several years without proper preparation of the engine, I’d be concerned with corrosion on the camlobes and lifters which cannot be inspected in a Lycoming without splitting the case. Also, the steel cylinder barrels can rust. I would borescope the cyli...

Steve How do you account for the accuracy of my method with a new battery? That convinced me it was ok. I agree with you that a real capacity tester would be best but I’m too cheap for that. As John Deakin used to say, that makes me an honorary ex airline captain. What most impressed me is that a ye...

There are two dangers of top overhauls. 1. Failure to achieve proper fastener preload. 2. Improper break in. I know of several very serious accidents that occurred because of exactly what Busch was talking about in that article. It is rare but it does happen. BTW, Busch has many articles and several...

Steve I think the Mike Busch approximate approach works pretty well. My evidence — when I replaced this battery some years ago, I did a load test on the new battery using this methodology and got a capacity of 99 per cent. Virtually no one tests load capacity. So this simple method is a huge improve...

sorry for the delay. Here are the amp draws I found for equipment in my DA40. I just turn these on and leave the avionics buss off. AI and HIS = 1 Battery Relay .5 Strobe 3.4 Position Lights .68 Pitot Heat 5.8 I found these in the Garmin 1000 STC which has to show that the Garmin 1000 doesn't overlo...

After I read Mike Busch, I started to do annual battery capacity tests. I turn position lights, strobe, and pitot heat which gives me a known draw and record time to run batt voltage to 20. Last year, I had 86% of capacity. This year 94%. I don’t know the magnitude of the measurement error but I thi...