Mr Krabs build

[Flying Scotsman]

Intersting lads but the shed is for the male species

Douggie

[Xzessperated]

Intersting lads but the shed is for the male species

Douggie

Yes Douggie but think how nice it is to watch TV at night with your DF33 on the sofa beside you. Mr Krabs in pride of place at the center of the table.

Here is a video of a typical Aussie shed

http://www.youtube.com/watch?v=jDFwQFqK4fo&feature=related

[Flying Scotsman]

Christ, those sheds are awesome. Screw North America . I am bound to sail to the land of ?
Douggie

[Xzessperated]

Christ, those sheds are awesome. Screw North America . I am bound to sail to the land of ?
Douggie

Make that the land of milk and honey Douggie. Just bring your own bees and cows.

[Xzessperated]

Put your boat on your set-up board or table.
What is the dimension from the bottom of the tub to the table at the rear of the sponson, and at the transom.
I need to know the clearance at the sponson rear and the transom.

I appreciate (online) all help given.

Simon,
While she was not looking I got your two measurements.

21.7 at the transom
26.7 at the rear of the sponson

Remember I have been told that the ride height should be 17mm by Andrewg who sells and races them here in Aus. If I lower the transom and want to get the 4 to 5 degrees angle of attack then the front would have to go down also.

Sorry to take so long. Visitors all day. They should buy a boat so they have something to do.

[Simon.O.]

Simon,
21.7 at the transom
26.7 at the rear of the sponson

Remember I have been told that the ride height should be 17mm by Andrewg who sells and races them here in Aus. If I lower the transom and want to get the 4 to 5 degrees angle of attack then the front would have to go down also.
.

This 17mm that Andrew advocates I assume is at the transom and therefore will fark up a lot of your hull geometry.
Keep the 4-5 deg AoA as that is what most of my reading says.
I'll do some maths in the morning down on the work bench and see what the tub AoA is.

WE NEED TO KNOW form Andrewg where this 17mm is measured. If it is at the transom then I can do a lot of maths from that.

[Xzessperated]

This 17mm that Andrew advocates I assume is at the transom and therefore will fark up a lot of your hull geometry.
Keep the 4-5 deg AoA as that is what most of my reading says.
I'll do some maths in the morning down on the work bench and see what the tub AoA is.

WE NEED TO KNOW form Andrewg where this 17mm is measured. If it is at the transom then I can do a lot of maths from that.

Simon it is common practice to set the hull on a good flat surface without the turn fin and rudder and set the strut depth. This means he is talking about the distance from the bottom of the tub to the bottom of the strut so it is measured at the transom. That is the 17mm he is talking about. I use a flat bottom strut. This gives a small ride surface and helps keep the prop running at the depth it should be.
Andrew may even help if you emailed him. This is his url.....

http://www.fastelectrics.com/default.asp

He is very knowledgeable and can talk for hours about boats on the phone.
If you change strut depth you also change the angle of attack on the sponsons. I guess you would know that from previous builds. Mr Krabs does run with his head held high. When I say that I mean it runs bow high.

Paddy

[andym]

As well he should Patrick Jonn Wellard.

[Simon.O.]

Paddy those dimensions that you gave will be mighty useful.
Now, have you tried the strut at 17mm ??
I drew this full size on my board and the change from 21.7 to 17 will net you approximatly 1deg extra AoA on the sponsons and the tub.
This will lighten up the front considerably at speed, it may be too much, but it would be worth a go to see what happens.
On my small rigger I have had the stut all over the place to see what happens.
I have found the sweet spot while I am on Ni cells, I know Lipo will change that.

Raise that strut to 17mm and give it an honest run.....then let us know.

[Xzessperated]

Paddy those dimensions that you gave will be mighty useful.
Now, have you tried the strut at 17mm ??
I drew this full size on my board and the change from 21.7 to 17 will net you approximatly 1deg extra AoA on the sponsons and the tub.This will lighten up the front considerably at speed, it may be too much, but it would be worth a go to see what happens.
On my small rigger I have had the stut all over the place to see what happens.
I have found the sweet spot while I am on Ni cells, I know Lipo will change that.

Raise that strut to 17mm and give it an honest run.....then let us know.

Simon I was very interested in you findings. I had not thought about it raising the AoA on the tub. That will help lift things out of the water a little for sure. Today I will lower the strut to 17mm and hope the weather is good in the morning.

PS. There is about 20 more Mr. Krabs pictures in your email. It is the last of them

[old guy]

PS. There is about 20 more Mr. Krabs pictures in your email. It is the last of them

No there is not, Dam you Paddy your holding out on me send pic to me to
Old Guy

[Xzessperated]

PS. There is about 20 more Mr. Krabs pictures in your email. It is the last of them

No there is not, Dam you Paddy your holding out on me send pic to me to
Old Guy

Rick I sent you the same pics on a CD.

I have some good videos of Pamela Anderson I could send you.

[Xzessperated]

Simon,
I did not get around to setting up the strut depth until this afternoon thanks to the wife wanting Vista taken off her laptop and then wanting me to replace it with XP. By the time I found all the drivers and got everything working my long weekend had become a very short one.
While I was working on Mr Krabs I found two things out.
1. The slot in my strut will not let it go down to 17mm. That will be fixed through the week.
2. When Mr Krabs sits flat on the table I have dihedral on the turn fin sponson but the rear edge of the other sponson sits flat on the table. I am not sure if that is designed like that or it is a bad hull. When I say bad I mean a factory problem. I think for what I am doing it will make no difference and I know from talking to Andrewg the same hulls are a mean racing weapon for the circuit as the following video shows.... Well the driver let it down

http://www.youtube.com/watch?v=ErEZDT7HQpw

[Xzessperated]

Mr. Krabs was tested again this morning. I am still working on moving the CoG backwards. This time I moved the receiver battery from just in front of the motor to just behind the motor and the boat is still showing no sign of blowing over. Next time I will run a flat pack and put the pack as far back as I can get it.

[tylerm]

Wheres the strut at now?