Mr Krabs build

[slimshady]

Opppps

Oh yeah now I see what you all mean – I looked at the manufactures photo found hear: http://www.astecmodels.co.uk/catalog...roducts_id=556

Opppps

I now see what you mean about the prop in line with the bottom of the hull – I tried to keep the prop shaft as straight as I possibly could this meant mounting the prop at an angle. I know it’s a flexi shaft but I did not want to bend the tube.

Ok I will have a look tonight to see what is possible.

Can you melt the resin with a hair dryer sufficient to remove the shaft? Would this melt the hull? Or would it be best to bend the tube, or dremel the pipe free? How much bend would I get away with – my last boat had solid shafts not flexi’s.

[andym]

Mate if it is epoxy a hair dryer will soften it and it will not melt the hull. A flex shaft can handle the required bend with ease

[Steven Vaccaro]

Then the bloody stick started to move . It was a very angry half dazed eastern brown snake missing some of it's tail. Now these things are fairly comon around here but as they are one of the most agressive and deadly venomus snakes on earth I nearly *!***!***!***!** myself!!! As it got its bearings I stood very still chest deep in water. Thank goodness it slowly swam to the bank and into the grass. You may not believe this tale but it is true as the pic of that backwards strut.

Wow! You're nuts for going into that water.
Sounds like time for a retrieval boat!

[andym]

There are a lot more of these critters in the grass I was standing in running the boat, on that particular day we saw 3 eastern brown, 2 king brown ( mulga snake ) and a red belly black snake in the space of 5 hrs. All these are deadly and have and do kill people every year. As I am used to them I know if you stay still they will go right on past you, you can piss yourself and scream your head off just do NOT move and all will be OK.

[Xzessperated]

There are a lot more of these critters in the grass I was standing in running the boat, on that particular day we saw 3 eastern brown, 2 king brown ( mulga snake ) and a red belly black snake in the space of 5 hrs. All these are deadly and have and do kill people every year. As I am used to them I know if you stay still they will go right on past you, you can piss yourself and scream your head off just do NOT move and all will be OK.

Andy you are a bit young to be having this problem but to save you some embarrassment I suggest you buy some Incontinence Pants.
As for screaming your head off, I thought that was a woman thing. Do you stand on a chair if a mouse enters the room?

[andym]

Very droll Paddy,

[Xzessperated]

Very droll Paddy,

Sorry Andy but I am not at my best at 5am. That is when I got up to test Mr. Krabs this morning.
The conditions were not great at the lake but I wanted to see how that YGE controller would handle the 1521 1D motor. Yes that is right, the 1D motor is in now. I put the M545 prop on and gave it some slow passes. 98.8 kph was showing on the gps and it sat like a mono on the rough water at that speed. When I say rough I mean a little worse than race water. I am sure with a bit more experience I could go faster on water like that. This boat would be a great circuit boat. I gave it 6 laps in total but just 2 laps and then a cool down period.
It was the temperatures that I was interested in and here they are
YGE controller...107 F
Neu 1521 1D motor...99 F
PolyQuest 4s battery... 122 F

I have no water cooling on anything. The boat came in without a drop of water in it.
My only complaint was those DUCKS!!!

[slimshady]

Bloody hell brute force and ignorance (+ a very hard stressful days work coupled with a couple of Stella’s, that’s European strong Fosters beer to you shandy drinking Oz’s) is better than a girls hair dryer, now I have managed to free the stuffing tube from the hull – when I looked at the photos it looked worse than it actually is, but I used a DTI on a flat bed and clocked 1234 microns in the side direction from the point of entry i.e. port to starboard entry to strut. Before the hulk in me smashed the resin and released the stuffing tube I turned the strut around – Yes you are all right that makes me look the biggest Pommie plonker about.

I have now designed a jig to hold the hull on another flat bed to aid positioning of the prop shaft horizontal to the hull but which part should I set it too, the rear tails off so I am thinking of setting it to the front straight section, but even then the hull has a slight curvature after this point as it tails off, I haven’t measured it accurately yet but looking at it I recon about 15 or so mm from the straight edge tailing off to the stern. How much lower from the straight edge to the centre point of the prop shaft would be best?

I am now considering getting the hull 3D scanned into my CAD system so I can play with the design and obtain your reactions before I actually commit to them (costly but it might be worth it in the long run) although saying that it wasn’t too much of a pain ripping the resin off and starting again.

I have designed some turn fins ready to be cut tomorrow out of CF, if I get the chance.

Sorry for being a plonker and thanks for all your advice, any additional advice is still warmly welcomed.

As always the very best regards


Slim

[slimshady]

It was the temperatures that I was interested in and here they are
YGE controller...107 F
Neu 1521 1D motor...99 F
PolyQuest 4s battery... 122 F

I have no water cooling on anything. The boat came in without a drop of water in it.
My only complaint was those DUCKS!!!

No water cooling that’s nuts – good to see you still haven’t hit the ducks

[Xzessperated]

Bloody hell brute force and ignorance (+ a very hard stressful days work coupled with a couple of Stella’s, that’s European strong Fosters beer to you shandy drinking Oz’s) is better than a girls hair dryer, now I have managed to free the stuffing tube from the hull – when I looked at the photos it looked worse than it actually is, but I used a DTI on a flat bed and clocked 1234 microns in the side direction from the point of entry i.e. port to starboard entry to strut. Before the hulk in me smashed the resin and released the stuffing tube I turned the strut around – Yes you are all right that makes me look the biggest Pommie plonker about.

I have now designed a jig to hold the hull on another flat bed to aid positioning of the prop shaft horizontal to the hull but which part should I set it too, the rear tails off so I am thinking of setting it to the front straight section, but even then the hull has a slight curvature after this point as it tails off, I haven’t measured it accurately yet but looking at it I recon about 15 or so mm from the straight edge tailing off to the stern. How much lower from the straight edge to the centre point of the prop shaft would be best?

I am now considering getting the hull 3D scanned into my CAD system so I can play with the design and obtain your reactions before I actually commit to them (costly but it might be worth it in the long run) although saying that it wasn’t too much of a pain ripping the resin off and starting again.

I have designed some turn fins ready to be cut tomorrow out of CF, if I get the chance.

Sorry for being a plonker and thanks for all your advice, any additional advice is still warmly welcomed.

As always the very best regards


Slim

Slim,
I do not consider you a plonker. We all have to start somewhere. I am so pleased that we have these forums where we can learn from each other. When I get a bit of time I will see if I can find a picture of a stuffing tube with a bend in it to give you some idea of the bend needed. This boat is worth setting up properly and spending a bit of time on doing just that.

[slimshady]

Thanks Paddy, Know what you mean, the photos would be a great starting point, now I know not to rush / bodge this by eye and actually use my engineering skills to set her up just right. More accuracy and less speed, let’s get it right first time round (not second time as I have learned).

Big kid wanting to play with big boy toys too soon – a step back in haste required – thank you all for putting me in my place and realising the importance of doing a “proper job” (sorry Norfolk saying)

Thanks again

Slim

[Xzessperated]

Thanks Paddy, Know what you mean, the photos would be a great starting point, now I know not to rush / bodge this by eye and actually use my engineering skills to set her up just right. More accuracy and less speed, let’s get it right first time round (not second time as I have learned).

Big kid wanting to play with big boy toys too soon – a step back in haste required – thank you all for putting me in my place and realising the importance of doing a “proper job” (sorry Norfolk saying)

Thanks again

Slim

Slim here is my big kid with a new boat story.
I had just got my Xzess 2 and had it ready to run but I wanted to range check the radio. I took it to a Park nearby. After finding my radio worked really well I noticed a small water hole about 10 meters across. I had no hatch cover for the boat but I thought what the heck, I have just got to see this thing move on water. Naturally the first thing a rigger does when the revs are applied it to lift the nose and the transom goes into the water. Well all I could see of my boat was about half of the sponsons sticking out of the water. You never seen an old geezer move so fast. LOL.

As promised I found a few pictures and an article by Doug Smock that should help you get the idea of the stuffing tube. Doug knows his stuff. The first link is also well worth the read and a study of the pictures should help you get the idea. Study the pictures in posts #6 and #9 well in the first link.

http://forums.offshoreelectrics.com/...fing+tube+bend

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

[lomdel]

What would be the best place to order/buy a Mr Krabbs hull from? Is the expansion pack offered by H&M (at 10% disc now BTW) worth it? The German site of H&M is killing me, I don't understand all the terms and Google's translation isn't helping much...

[Xzessperated]

What would be the best place to order/buy a Mr Krabbs hull from? Is the expansion pack offered by H&M (at 10% disc now BTW) worth it? The German site of H&M is killing me, I don't understand all the terms and Google's translation isn't helping much...

I sent you a PM with a link that will be able to help you. I wish more of the German sites would put up an English page but I guess they wish our vendors would put up a German page.
Paddy

[slimshady]

Thanks for that Paddy, made me realise I have been worried about bending the stuffing tube for nothing. Tonight I have bent the stuffing tube, as little as possible, but bent all the same, I have also corrected the lateral misalignment. Buy the way the jig idea did not work so I used a straight edge and a flat bed with DTI, slightly out but not by much. Although saying that I haven’t glued it in yet. My new micro metal geared servo turned up today so I designed and built a CF bracket to sit in the rear of the hull. I think the receiver is knackered so more work required, and I have cut turn fins for the front sponson’s out of CF, again not fitted yet. Not sure if I will complete the boat by Sunday, I have Ninja tomorrow night, Saturday I am watching Eng V SA so that only leaves Friday night.

Sorry Paddy, enough of my life and boat, how is your Mr Krabs?

P.S. Lomdel I have PM’ed you with the place I brought the hull from in the UK http://www.astecmodels.co.uk/catalog...roducts_id=210

Talk to Allen – he da man


Enjoy

Slim