Thread: The Cruise Control 520

G'Day Mark, I've been waiting for this to emerge, to be honest I am an unabashed Hartley fan for the simple reason that so far I haven't seen another design that has the deadrise I prefer..(18Deg or better) while still having a modern look and shape etc etc, I like the Mushulu range and yes the 19 is a good looking design too. I am interested in this as at present I have plans for the original Hartley Vixen, (20Deg 17-18') and hopefuilly at years end will begin the build but, maybe I will rethink after we see a bit more..........so keep going at the drafting board, I know there are a few people interested

cheers
kev

Mark the concept drawings look great. I'm halfway through building my first boat, hopefully not my last as well. Started with a free plan of the "Jinx" and made some mods to turn it into a Bass Style fishing boat. I have a Haines Hunter glass boat of 5.2m and really love it. Though it's used for offshore fishing, not chasing Bass or other freshwater species. Only thing I can think of that would be better than the Haines is building a similar size (or slightly bigger) boat with timber frames and ply skin. Your design would lend itself to a centre console, deep vee style by the looks. I'll be watching this model closely to see how it turns out.

Do you have any forecast yet of material cost for the Cruise Control. Sorry if I'm getting ahead of myself (and your design work). It has great lines, not like a lot of the "older" style plans getting around. You know the ones with rounded butts and little or no vee? Great looking boats in their owr right, but not what I will be looking for.
Again, getting ahead of myself, what will the plans cost?

G'day CQ chipper,

In regards to the Cruise Control 5.2, I'm now into the 3D modeling stage and progressing pretty quickly in this regard. After spending 85 hours number crunching, designing the hull itself, making all the plates developable with ply ( or aluminum), the list is endless, at this early stage there's not a lot I don't know about the design. I have a rough idea of what the hull itself will weigh, power requirements/ trim angle at various speeds/ rough water capability/ sea keeping abilities/ Hull ventilation requirements for fuel, etc. Even right down to how long it will take an average person to get sea sick in various sea conditions and speeds ( It come up aces here ! ), but its still early stages yet so I can't give you an estimated materials list or costings yet.
I'm hoping to have a 3D model ready for display on our website by this Friday. (I try to show progress reports on each design at the end of every week on our website until the actual plans commence), so if you interested, I'll post a few renderings here.

Plans price ? Probably in the order of around $200 - $250. That's really cheap considering there is going to be around 350 hrs of work in developing the design. I'd usually charge a lot more, but considering the world wide economic climate, I've bought the plan price down.

I hope this answers your question?
Regards
Mark

G'day Mark.

You must get an enormous amount of satisfaction from designing a boat from scratch, doing the calcs and seeing it come alive before your very eyes. Though at that price for the plans you may not make a lot of money. Unless of course, the plans are a runaway best seller, which could quite well turn out to be the case. This is (I would imagine) a pretty popular size for the amateur builder.

I'm very interested in this new design, especially if it could be modified to a centre console without too much trouble. So I'll be watching with anticipation over the coming weeks. I would really like to build a slightly larger centre cab but the Treasury Dept has other views. Something about build cost just being the start, then there's a bigger outboard and trailer, higher running costs, blah blah blah. Bloody clever woman that wife of mine!

G'day Everybody,
Well, another week goes by and the 3D modeling is 95% finished. I'm looking at starting the plans next Tuesday. She's going to be a stitch and tape design.

Here's the latest updates for the Cruise Control 5,2.
If you have any questions, please feel free to ask.
regards
Mark

Sorry Mark, there's too much bouyancy - most people prefer the hull to actually be in the water

Richard

Actually Richard, it's in planing mode (ha ha )

I like to pull the boat out of the water so that people can get a total view of the design as a whole. Later, when it totally finished I'll do rotating view of the boat out of the water, then drop it in the water and tear off into the sunset

Sent it of to the client who commisioned the design tonight and he's wrapped. We've got the go ahead for the next stage.

Yesterday we had an alloy production boatbuilding company approach us when they spotted this design on the web and asked could we draw up a contract and license them to build around 20 of them for the Australian and New Zealand markets. We'll get into that further next week.

So, the Cruise Control 5.2 will be coming out as a plywood stitch and tape and alloy design

G'day Mark,
This is making me seriously think twice about the Hartley, actually I am pretty much sold on it to be honest, finding something with decent deadrise to handle the Moreton Bay and Hervey Bay chop isn't easy, can you tell me what deadrise at the transom is please it looks like about 12 to 15 Deg or there abaouts nice entry too, mmm me thinks the 2010 project could change to this

Kev

G'day Kev,
Actually this design, commissioned by Tony Krebs, lives in Brisbane and is planning on moving to Hervey bay. So we designed the boat for these waters.

In regards to deadrise angles, the tansom is 14 degrees, the midship section is 20 degrees and the entry point at the bow is 53 degrees. On the plane, the critical deadrise to target for is the centre of pressure on the bottom plate when the boat is up on the plane and trimming at its intended angle. Here we've targeted a deadrise angle of 17.5 degrees which will give a smooth ride in short chop.

For example, in Maxsurf Seakeeper ( one of the ship design programs I use) I tested the Cruise Control 5.2 in various sea conditions ranging from calm to cyclone(Hurricane) conditions at various speeds and headings while at the same time as a part of the program, monitor people within the boat at various stations in regards to sea sickness effects/ hull slamming/ deck wettness... the list is endless. The design came up aces. ( The final hull design was one of 5 that I designed from a parent model and after testing the model, the other 4 were eliminated for one reason or another)

Regards
Mark

Mark,
Interesting about Tony, I did the opposite, sort of, grew up in Brisbane, moved to Hervey Bay for about nine years and then moved back to Brisbane, still go to the bay to visit friends and fish as well as fish outside South Passage and Southport, I have been pondering (procrastinating) for about 12 months for several reasons on starting the build one of which is the depth of the hull of the Hartley, don't get me wrong as I am a huge fan of them and the familly has owned two in the past. The Crusie Control is in opinion going to be one of those designs that fills a big void, Ply Hull and modern engineering, I am keen to see more as it progresses, HP rating, weights etc, very interested in this boat, well done Mark

Kev

Originally Posted by Mark Bowdidge

Yesterday we had an alloy production boatbuilding company approach us when they spotted this design on the web and asked could we draw up a contract and license them to build around 20 of them for the Australian and New Zealand markets. We'll get into that further next week.

, &

Hi Mark,

Ive been looking at you website and was wondering if you were to build either the sportzmaster or the new 5.2 what would be a estimate at how much they would cost to build. Also is there any completed sportzmaster photos at all.

Cheers Ken

G'day Ken,
In regards to the SportzMaster 19, at present we don't have any build photos yet. One is being built in New Caladonia and the other won't be started until Steve finishes his present build. Although now he's got his eye on the Cruise Control and is contemplating building that first.
Rough cost to build = hull only around $3500. The Paulownia only costs approx $800 from Port Phillip Plantation Shutters down in Melbourne.

In regards to the Cruise Control 5.2, I haven't done a costing yet, as I'm still up to my armpits in 3D modeling and CAD drawings. As soon as I get a rough idea, I'll let you now. Also, I'm hoping to have the plans finished in around 2 to 3 weeks.

I'll be uploading here shortly, renderings of the build process so everyone can get a feel for how it goes together. In short, the whole boat is built from plywood...hull, stringers... everything. This way the builder won't have to go everywhere to source materials. It's also being designed for kit construction, so if anyone is interested in a kit, let me know here.

regards
Mark

G'day Mark, just wondering if there is a variation to the Sportzmaster 19 to allow the build of a cuddy cab similar to the Cruise Control ?