radiopicture
Joined: 23 Jun 2008
Posts: 263
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 Posted: Fri Jul 09, 2010 3:53 am Post subject: No Title |
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My previous Yak (1991) had a sort of sled in it allowing secure installation of batteries that are similar to the ones Dennis is linking to. My current (1993) Yak-52 came from the factory with two large batteries similar to what dennis suggests, just in a different form factor. They are unnecessarily large, but the proportions seem to replace the older batteries more directly. I'll snap a pic of what the factory sent out and post that with the battery part number. It's the kind you could easily order online... looks like a giant alarm system battery.
On Jul 9, 2010, at 7:37 AM, A. Dennis Savarese wrote:
[quote]Contact me off-list and I should be able to help you regarding the inspection plan. I have a comprehensive 18 page annual inspection guide for the 52.
Battery - most people use 2 - 12 volt sealed, gel batteries to replace the old, heavy Russian battery. Absolutely no need for it whatsoever. Here's an example of what is commonly used. http://www.elkproducts.com/products/elk-12180.htm You can purchase these at a local Batteries Plus store for around $50 each. You'll also have to fabricate a small try for the batteries to fit in inside the battery compartment. Most everyone uses 1" aluminum angle sections and rivets them to the floor of the battery compartment.
Front Turn and Bank - This unit is not identical to the rear unit (even though they look the same) because it has a capillary tube that was used when the instructor in the rear cockpit disabled the instrument to simulate an instrument failure. To my knowledge, there is no company in the US that repairs these instruments. Although it is connected to the static system, it is connected thru the disabling solenoids which are located behind the instrument panel and mounted on the back side of the firewall. You can bypass the disabling solenoids. If you decide to install a US VSI in the front cockpit, you will need to bypass the disabling solenoid. If can find out if it can be repaired by one of the restoration companies.
Oh, and it would be nice to know your name too. 
Dennis
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