re: the Odyssey batteries.  Read the charging instructions carefully and make sure your charger conforms.   One of mine got fried using a standard auto-charger.     IMO although they have wonderful shelf life compared to aviation batteries, they do seem to be susceptible to over charging.

Colyn

On Jan 15, 2012, at 10:39 AM, Lorn H Olsen wrote:

From: "Ed Gray" <egraylaw@swbell.net>
Date: January 13, 2012 6:26:16 AM EST

Here’s a question for Chris, Paul, and others with knowledge of L2 exhaust.  My 360 with Superior IO 360 is ready for engine start up.  The exhaust is a 4 into 1 built by Sonic Headers in Princeton, Mn.  It is beautiful work and ceramic coated.  Sonic provided me with a clamp to fit over the large pipe (collector exit).  This will need to be fastened to the underside of the fuse in some manner, but I question whether it is necessary.  The collector is bolted to two of the headers with stainless dogbones and 3/16 bolts.  The headers are of course very solid on the block.  The additional clamp would need to be rubber mounted to allow engine movement.  I see no way the collector or any part of it can ever depart the plane.  Is this clamp necessary?

I have been flying my O-320 with standard factory exhaust for over 1,800 hours without a clamp and without any problems. I do have the 2 exhausts strapped together with a stainless hose clamp over exhaust wrap. See post on 01/11/12 for a photo.

I just have completed the install of a 2 screen Dynon Skyview system with ap and Dynon txpd with traffic, Garmin SL30 radio to give ILS presentation on the Dynon screen.  I have no steam gage backups.  With dual screens, backup batteries and dual ADHRS I feel that I have enough redundancy.  Does anyone have input or comment?  This plane may be one of the first with no round gauges anywhere.

I like backup steam.

Next issue, my battery is an Odyssy 650 (650 cranking amps) which has been sitting around for 5 years.  It does not turn the crank fast enough for starting.  Is 650 amps enuf for a 360 (8.5 compression).  I probably need a new battery but don’t want to buy one undersized.

I have been using an Odyssey PC925 for over 7 years and it still starts the plane better than the new Gill and/or Concords that I had in the past. I have mistakenly left my master on for about 7 days. The battery was able to recover. I believe that Bill Harrelson uses a set of either PC625's or PC680's, one as main and one as a backup. Bill has enough for his O-320. (Bill pop-in).

I originally purchased the battery from B&C, model # BC100-1. The price from B&C is still good at $150.00.

I really appreciate this website-very informative!  I will post pics when the plane is together.  Look for N360 ZG at Oshkosh!
 
Ed Gray, Dallas

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Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,800 hrs, N31161, Y47, SE Michigan

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