New Engine while building Question

[jcarne]

Originally Posted by Bavafa

Ken,
If you are really worried about humidity, perhaps you can build or buy a desiccant dehumidifier and continuously run it thru the engine to keep it extra dry.

Just to add to this I just fabricated a dryer much like you mention. I stole the idea from this site. Right now I am using it to keep my engine inside of a bag nice and dry. Hangs around 17% right now but have only had it on for a day. Once the engine is mounted I will put the tubes in the appropriate ports on the engine. (oil dip stick tube and breather vent) Most people even after doing this though seem to run desiccant plugs until the engine is operational.

Some compelling evidence on using something after flying too can be found here. Same concept but without the fancy controller EICU sells.

[spark68]

Stockman,

Flyboyaccessories has a cowl mounting jig that they sell/rent to do just what you are doing. Have a look, might be just what you need.

https://www.flyboyaccessories.com/product-p/1502.htm

Mark

[Stockmanreef]

Curley-

How do you determine the distance you put the plate on the tool to ensure that the cowling ends up in the correct place?

Thanks
ken

[DRMA]

I don?t understand why you need to rotate the engine to install the prop? I have installed my engine, prop, spinner, cowl, exhaust, etc without turning the engine crank. Suggest you give it a try before removing
Preservation.

[Jetmart]

Originally Posted by Stockmanreef

Curley-

How do you determine the distance you put the plate on the tool to ensure that the cowling ends up in the correct place?

Thanks
ken

Please note: we do recommend that you determine the mounting dimension of the front of the cowl relative to the face of the installed flywheel. If you don't know this dimension, please consult your propeller and engine manufacturer. If that dimension falls between one inch and 7 inches, this tool will suit your needs. If it falls outside that range, please get in touch with us and we can help.

[RV7A Flyer]

Originally Posted by DRMA

I don?t understand why you need to rotate the engine to install the prop? I have installed my engine, prop, spinner, cowl, exhaust, etc without turning the engine crank. Suggest you give it a try before removing
Preservation.

The spinner should be aligned with the axis of the crankshaft so it does not ?wobble? as it spins. This requires that the prop and spinner be mounted on the engine. First, align the spinner as closely as possible and tape it to the bulkhead. Then, mark a point in the exact center of the nose of the spinner. Stand a step ladder up in front of the spinner with a pencil clamped to it and place the pencil point near at the mark on the spinner nose. Remove a spark plug from each cylinder so that the prop can be rotated easily and safely. If the spinner is in perfect alignment, its tip will remain in position with the pencil point through full 360 degree rotation. If not, reposition prior to drilling.

Construction Manula, p. 12-7

[Stockmanreef]

I keep wondering what section 12 is. It certainly is meaningless to a 14 builders. At least as near as I can tell.

I like the pencil idea. I was planning on using a dual axis laser, but the pencil might be better. I was thinking one on the tip and one on the side a few inches back from the tip of the spinner. the pencil on the side might actually be more accurate.

Interestingly, the RV-14 plans say to remove the caps for the top spark plugs, but only to rotate the spinner for drilling. It says nothing about the pencil trick. Unless I just missed it in the plans.

[RV7A Flyer]

Originally Posted by Stockmanreef

I keep wondering what section 12 is. It certainly is meaningless to a 14 builders. At least as near as I can tell.

Sorry, that was just me being in a hurry...that's the section of the -7 plans. 14 or other models may be different. Was just pointing out that (at least for some models) there *is* a reason to rotate the prop during the build.

[Stockmanreef]

well, you weren't the only only to mention section 12. Someone from Van's Support cited section 12 as well for some strange reason.

[DRMA]

Sorry for the confusion. I’m installing an MT prop on my RV-10 and MT provides the spinner and attach plates with the prop. Since these are already drilled, there is no alignment required, you just install it using the provided screws.

I didn’t think about the need to trim, align and drill the Vans provided spinner since I didn’t use it on my build.

Regards