Carwil compass adjustment

[Robert Lees]

Does anyone have knowledge of compensating the Carwil compass? (the bubble-face compass with the bakelite slide-out "drawer")

[Ragwing nut]

Re: Carwil compass adjustment

I was just talking with Wally Black about this yesterday. Call Keystone, they should know

Mike

[Robert Lees]

Re: Carwil compass adjustment

Sorry, who are Keystone? Do they have a user-friendly method of swinging a Carwill compass on the aeroplane?

Rob

[astjp2]

Re: Carwil compass adjustment

I sent 2 tachs to Keystone and have not seen them in over a year, not much confidence in them so far. Tim

[Howard Wilson]

Re: Carwil compass adjustment

Keystone refurbished a bubble faced Taylorcraft compass, and a 3 in 1 tach for me at different times. They did a good job but seem to need quite a bit of lead time to complete a job. Seems like an occasional polite inquirey, as to the progress on your project, moves it back up on their radar and accelerates the process.

[Ragwing nut]

Re: Carwil compass adjustment

I sent 2 tachs to Keystone and have not seen them in over a year, not much confidence in them so far. Tim

I would call them. I have never had them take that long unless you sent them something they are having to completely start over with.

Keystone instruments is located in Pennsylvania and they restore antique instruments that no one else will touch here in the states.

Mike

[Robert Lees]

Re: Carwil compass adjustment

So if they restore your valuable antique compass, how does the compass get "swung" on the aircraft?

[high time cub]

Re: Carwil compass adjustment

http://www.j3-cub.com/index.php?option=com_smf&Itemid=65&topic=1015.0

[Forrest Barber]

Re: Carwil compass adjustment

Keystone is on the Lock haven Airport right across from where Taylorcraft used to be, i am going there in two weeks to check them out again. I ahve lots of stuff they can rebuild if they will!

[Mark Bowden]

Re: Carwil compass adjustment

Hello,

I'm looking for any instruction manual or documentation on the procedure to calibrate a Carwil Type-60 Compass, specifically I have a Type-60T that was just restored. I believe my model is a 1941 of which was followed by the Type 61 line, then the Airpaths. This model compensates with magnetic rods in 3 pockets on each N-S & E-W alignment. There are only 2 rods that were left in the compensation block and the gold end of the rod is the S-pole.

If anyone has any information to please share it would be most appreciated. As well as a source for the magnetic rods as they are quite small 0.025" dia and 0.78" long. Making the rod length was done in a die with a pin to break them in to the lengths. You can seek the tell-tail on the gold end.

I have found a bit of info on line (including an original ad for the type 60 line) and would ask if anyone has anything else to share, please send it to me. I'll collect all this into a pdf file and post in the docs section for everyone's future ref.

Note, there are four Type 60 models and I think they use different compensation blocks. There are Type: 60 (dash mount), 60-C (Cubs), 60-T (Taylorcraft), 60-U (Aeronca or cowl mount)

Thanks, Mark

[3Dreaming]

Re: Carwil compass adjustment

My experience with any of the bubble faced compasses has been that they are not very accurate. The compass in the 41 BL I restored had the compensator with the pins. There was on missing. I cut some music wire that was about the same length as the original pins, magnetized the rod, and used it. The best I could do was get the compass within about 20° all the way around the circle.

[Hank Jarrett]

Re: Carwil compass adjustment

That is the same compass as in my 45 and as I remember I had some rods missing too. I just swapped them around until I got it "fairly close" and then just updated the compass card. With a compass card it doesn't have to be accurate as much as it needs to be consistent. From what I have seen not many people bother looking at them any more anyway. Everyone seems to have one of those GPS thingies that tell you track made good anyway.
Anyone still know how to figure out a wind triangle for crab angle but me any more?

Hank

[woodmw]

Re: Carwil compass adjustment

Yep...

I still carry my E6B in my flight bag. But I must admit that the app on the smart phone is a lot easier and faster.

And I still by sectionals.

[woodmw]

Re: Carwil compass adjustment

Mark

That's a nice looking compass. I like you choice of colors. Got any pictures of your interior/panel?

[Mark Bowden]

Re: Carwil compass adjustment

Here is a pic of prefit activity for the compass and yoke covers. The colors are to bring some match inside from the exterior. The newer dash compass will come out once the bubble goes in. And I have to pull the yokes to get the covers on. Hopefully in a couple weeks when the wheel pants are finished being restored.

Other than the Stratus 2S and the Ipad the panel is as Dad restored it in '99. Except I added back in an A7 mag switch this winter I found.

The Ipad mini looks like it blocks the view but it doesn't interfere with any sight line, except for about 1 square inch in the upper LH corner during flare. I modified a RAM mount to get it so sit so low and not interfere with the yoke at full travel. I also rebuilt the center console that holds the radio/intercom and head set controls.

During restoration Dad put in the VSI and the G-meter in place of the ammeter and Safe-Flight stall warning buzzer added in the 40's and 50's respectively. I have both and they both still work, it was one of the first Safe Flight products. Which is much more than can be said for the VSI as it was never connected to a static source.

Eventually I'll put the small Trig radio/transponder in the LH glove box.

Mark