Project: Design RV-6 Tire Jack

[David Paule]

Is there any sort of a stop to prevent the extensible part from coming right out of the tube?

Dave

[rvbuilder2002]

Originally Posted by FLY6

I believe many would carry a 7/8 wrench to change spark plugs. Though maybe that was his rational.

An open end wrench (which is what it looks like would be required to use the jack) is not very user friendly for changing a spark plug....

[FLY6]

?An open end wrench (which is what it looks like would be required to use the jack) is not very user friendly for changing a spark plug....?

I forgot I had a deep socket modified to accept a 7/8 wrench.

I?ll return to the dog house

[KiloWhiskey1]

Can the lifting screw be removed and reinserted easily? If so, a 7/8? gearwrench could be used for quick jacking.

[mbauer]

At work on lunch:

The 7/8" wrench fits the nut. Tried various options to not use a wrench, they all hit the disc brake back. A wrench is the only thing that will work.

Fabrication shop who will be welding these up suggests a small "stamped" wrench they can make to loose weight.

These are in the test phase, didn't want to get tooling involved until I know they will work. So, for now looking at a 7/8" wrench.

Plan to stop by second hand store to purchase as many as I can and cut the end off to save weight.

I have my testers setup. Now to get these heading their way for testing! Hopefully results will be in favor of them, with great ideas how to improve.

Will be working on weight savings, and ease of use. Lightning holes can save weight without ruining lifting ability.

Going to ask testers to list their gripes/likes here on this thread so everyone will know as fast as I do. Then you get to see what changes are needed.

Best regards,
Mike Bauer

[mbauer]

Originally Posted by David Paule

Is there any sort of a stop to prevent the extensible part from coming right out of the tube?

Dave

Yes, welded on washer at the bottom.

First concern when testing...Welded the first ones myself, so lots of concerns, decided to leave the welding to the professionals.

Good that I work selling welding supplies, know plenty of professional welders/shops.

Best regards,
Mike Bauer

[mbauer]

Originally Posted by KiloWhiskey1

Can the lifting screw be removed and reinserted easily? If so, a 7/8? gearwrench could be used for quick jacking.

No, welding in place by top washer and washer welded to bottom of ACME thread.

Best regards,
Mike Bauer

[mbauer]

Price?
Not sure yet, will depend on time to construct, paying professional welders to fabricate.

Jigs have been constructed, but they will probably change a little after last discussions with Dan the owner of fabrication shop.

He is on vacation right now enjoying Hawaii, sunny days and big waves...

Already have one great idea passed along, good enough that it needs investigated, this will change construction technique if it pays off. Will need to offset the weight increase, but gives a couple of advantages, just wished I'd thought to try it before getting this far!

Thank you KiloWhiskey1!

Best regards,
Mike Bauer

[WingsOnWheels]

For the wrench, you could drill holes in the nut and use a 3/16" rod as the wrench.

I'm very interested as well, but would also like to see better detail of what you are using for a jack point on the gear.

[RONSIM]

My experience has been that a flat put the fairing on the ground such the lower screws holding the fairing on cannot be reached --- figured I would have to have something that would lift the wing.

If this design would work with fairings, it would be nice solution.

Ron