Does this stuffing tube angle look good?

[flyboy320]

This is my first build, and before I epoxy the stuffing tube in place, I want to be sure I have bent the correct angle in it, and that it looks like a good transition from the tube to the strut.

Its a Vac-u-pickle for my first build...

[Doug Smock]

Its a Vac-u-pickle for my first build...

What's up with that?

You're not quite there, check out the pics here.

http://www.vac-u-boat.com/PickleSmockBuildPage.htm

I could have taken a better pic of the stuffing tube, sorry about that. If you need one I have two boats on the bench right now.

With the SV motor, the boat seemed to like the strut pretty high, keep that in mind.

Doug

[westbeach]

Heres a pic of whats going on, your stuff tube is running away from your strut. Don't worry I had to make a few before I had it just right. And I needed 2 stuff tubes for my cat!

Cheers,

Neal

[flyboy320]

OK, thanks for the help guys. After looking at the pictures, the camera has exaggerated the tube not being bent enough at the end. It actually makes it look like there is no bend at all ( I assure you there is)!! I'll try and get it more flat where it gets near the strut.

With the SV motor, the boat seemed to like the strut pretty high, keep that in mind.

Do you suggest less than 3/4" for the strut adjustment?

I could have taken a better pic of the stuffing tube, sorry about that. If you need one I have two boats on the bench right now.

If you have any other photos, that would be a big help...:)

[Doug Smock]

3/4" seemed to be the sweet spot with 700 power.
You'll have different strut heights for different power systems. When I tested the SV motor with the 645, the boat performed best with the strut all the way up.

I'll go take some pics for ya, hang on a min. or so.

Doug

[Doug Smock]

Here you go sir. about the confusion.

Doug

[flyboy320]

Hey thats great Doug (pictures worth a thousand words)!

Would you say that tube height would work for the SV27? It looks like its aligned for a strut thats all the way up (as like you suggested it should be for the SV27 motor).

[Doug Smock]

Hey thats great Doug (pictures worth a thousand words)!

Would you say that tube height would work for the SV27? It looks like its aligned for a strut thats all the way up (as like you suggested it should be for the SV27 motor).

Yes sir, that boat is getting the SV motor!

Keep up the good work!
Doug

[flyboy320]

OK, I think I may have it now. The strut doesn't quite meet up with the tube (it has to be raised a small bit), but at least thats adjustable!!

With this motor, do you find it best to have one degree down angle on the strut, or should it be level?

[Doug Smock]

OK, I think I may have it now. The strut doesn't quite meet up with the tube (it has to be raised a small bit), but at least thats adjustable!!

With this motor, do you find it best to have one degree down angle on the strut, or should it be level?

Level, there is no additional lift needed.

Doug

[flyboy320]

Well I had it out for its first run today. It ran great, and turned much better than I expected to the left. the Sv27 motor didn't seem to "rev" as much as it did on my BBY26" mono. Maybe because the prop isn't as close to the surface of the water on the hydro, I'm not sure.

C of G is 2" behind the turn fin. This was as close as I could get it with the batteries up as far as they would go.

How does the strut height look? Right now it's 3/8" from bottom of the hull, to the centerline of the shaft. It's as level as I can get (is it supposed to be level with the bottom of the center part of the hull, or level with respect to the outer part of the hull (sorry, don't know what that part of the boats called!). It seems the outer "rails" decrease in height as you move back to the rear of the boat.

[Doug Smock]

I'm confused by your CG. I haven't had to push the batteries that far forward in any of the setups.
"C of G is 2" behind the turn fin"........ Behind the leading edge?, trailing edge?
What cells are you using, what prop are you running, got a pic?

Doug

[mike martin]

?????????????????

[flyboy320]

Sorry, should have been more clear...

The C of G is 2" behind the rear end of the sponson (or 2" behind where the turn fin is screwed into the hull). It seems to fall about 2/3 back from the front of the turn fin.

I'm running 2 2S lipos in series (PolyRC, 4000mah, 25C) with the Sv27 motor, and a 40mm CF prop. I have a 42mm and 45mm prop, but wanted to start small, and see how it handles first.

It gets up on plane real fast, what a blast to drive...

[fastbaltek]

how do i find the COG of a hydro hull?