Looking Great Peter!


Jon

Carbon fibre wings are almost ready for installation, front wing is adjustable in angle of attack and will be used for trim rear wing is fixed.

Peter

Nice Work Peter, when you hoping to hit the water?

Jon

First time I see a wing on a boat. Didn't know it can be beneficial to adjust trim.

Hi John,
We are hoping to get in the water before the end of the year but we like boating in america so much that is slowing us down, we are in key west at the moment however before we came out i got the exhausts fitted permanently and most of the raw water pipework is in. As soon as i get back i should be making lots of progress as the weather should be better, as i am working outside it can be a bit of a hinderance.

Peter

Simply amazing! Love your work! Have fun in the US and keep us updated on your other thread!

Trial fitted the first of Cheetah's lightweight carbon fibre engine covers as well as being nice to look at they are also very functional as they are made in one piece with no holes for lifting eyes any water splashes can't enter the injector pockets, they are 75% lighter than the originals.

Peter

Holy crap that's beautiful.

Thanks Guys,
Finished of the fuel and the fly-by-wire steering system plumbing, also added a few more bits of carbon.

Peter

Hi All,
Made some billet aluminium parts today to fit the carbon engine covers, also started fabrication of the battery tray. Lightweight wiring Harness is progressing nicely as is the plug for the front wing mounting brackets.

Peter

Hi all,
Low drag carbon water pickup is finished ready to be installed, carbon nose cone has been cut to shape and trial fitted this fills in the void where the anchor mounting bracket was bolted to the deck.Permanently mounted the batteries and isolator switches, also made and fitted the battery leads.


Peter

Hi All,
Just trial fitted cheetah's main wing on carbon cheetah it is fully adjustable in angle of attack and also has adjustment for and aft to change the point of lift. The centre section will have a manually adjustable flap for additional lift, both outer sections will have automated flaps independently controlled.

Peter

Hi All,
At last we have some decent weather so i have been able to make some really goood progress.... exhaust tailpipes are now bonded in and cut to shape, just require a carbon fibre trim flange to finish them of. Wing supports have had a couple of coats of two-pack, water pickup is permanently fitted. Carbon nose cone has been ground to shape and is ready for bonding together. have also done a bit more lightning work.

Peter

I think you are the Carbon King....Peter!

Keep up the great work!


Jon

Lots more progress on the wings and their mounting system.

Peter

I have to admit that I have not been paying attention to this thread for a few months, Peter. Awesome work! How's the OL running?

Thanks Jon and C_ Spray,
Outerlimits is going very well still dialling in changed the tabs for 380's which has made a huge improvement. Just in the process of changing the helm unit to make the steering much more direct, also fitting a high pressure relief valve in the steering pump to make the steering consistent in both directions, once sorted to my satisfaction i'm sure this is going to be a very quick little boat. As soon as i have time it will be getting my fly-by-wire steering system and steering wheel mounted throttle paddles. Also adding a vent tube to the cav plate to aid planing with a tall prop.

All The Best
Peter

Hi All,
Just finished the re-work of the bow thruster installed the new battery and variable speed controller, have used buzz bars for all connections, time consuming but much lighter and neater than conventional battery leads, also made and installed mounting brackets for the dry sump pumps and filters will be piping them up soon.

Peter

WOW! Theres really no words to describe the type of work that you do......

Hi All,
Picked up the front wing mounting plates from Simon at Oval Stainless these are water jetted alloy, i then routed a chamfer on all edges and then blended in with a dye grinder. The cross members are made from yacht rigging spreader bars with the back flange cut off then ground to an aero dynamic shape almost ready for welding, also made a pod for the rev counters from low density foam which Carbon Weasel are skinning for me i will then remove the foam from the inside.

Peter

looking good

Blimey Peter,

You sure got my respect! I think it is very laudable of you to educate the fast boaters so altruistically.
Yesterday early in the morning, I Googled on “trim tab mounting opinions” and came across your name......................................
Finally in the evening (after having a mouse finger and square eyes from watching the screen) I had read most everything to find from you, also on Boatmad and your own site.
It was like one is looking for a tip, how to string a guitar and suddenly find Eric Clapton explaining how he improves his instruments and plays his grips and gigs. I just kept on reading and haven't done anything as planned to do that day..... thanks!

According to what Volvo Penta told me, the DPR drives can still be bought as spare parts in the future.

I have driven several hundreds of hours on sea trials, training and demos in this boat http://www.youtube.com/watch?v=g9eKKGdam3o
It is a conventional 10,9 metres mono hull (light ship 3900 kg / fully loaded + 6 pax 5200 kg) with 2 x 370HP/ D6 and DPR drives.

The first hull ( on the clip) was the fastest one, running 60kts with 2 pers. This boat was intended to be a shake downer and constantly driven to the limits. Later hulls for sale , had anti fouling and were 2 kts slower.
All in all, I can say: the DPR drives are quite good and will survive a good beating (as long as you close the throttle in time when coming off waves) Manoeuvring with the twin duo props is great fun and very easy.
Hefty speed turns are possible with the legs trimmed in.The duo props are great in this set up and give plenty stern lift.
At top speed we measured 2.1 bars of dynamic water pressure in the o.e.m. plastic strainer on the engine. I noticed you have the updated strainer version already on your 435, plus with your bespoke intake it'll be different. But I'd say, keep and eye on it, I hated all the salt on the engines every time the o-ring blew up and we received message of a new pope ( white smoke ) from the engine room. And if you haven't already thought about it, precisely measure for any stray currents (especially with all the conducting carbon parts) between boat and engine, otherwise your anodes and weaker parts (intercoolers etc.) will keep you busy!

For work, we run a couple 8 metre ribs with a single 350/D6 with DPH drives, these boats run some 45-47kts ( the limit ) and there is some pitting on the root of the Nibral props from cavitation, but they survive.
Drives are serviced as recommended and overhauled every 1000hrs. Good drives for the job, evident though to keep a close eye on spun up fishing lines that’ll eat the seals. If not noticed, seals start leaking and the oil will be a salty emulsion in no time

And please keep the tuition coming I savour it!

I am quite interested in your steer by wire project and will give you a call

Best regards from the other side of the Channel
Paul Hollander

Thanks offshore excursion and rickg 1984 :)
Made lots more progress finished making all the parts for the front wing mounting and bolted the bases to the nose moulding, this will be used as a jig so that all the parts fit nice and flush with the deck. Also made lots more progress on the wiring front, i have used standard Volvo looms which are concealed where possible which i have tailored in situ so there are no coiled up excess wires anywhere, they are also identified port and starboard along their lengths for easy recognition.

Peter

Wiring pictures

Thanks Paul,
You must have had lots of patience to read all that information in one go.... Volvo spare parts to rebuild the drives are very expensive in England as i knew production was coming to an end i bought 3 new drives which are in our stores, i have also had severe strainer lid problems which i eventually cured by making a cantilever bracket from the cam covers this time however i am incorporating a pressure relief valve in the strainer lids to take out any unwanted spikes. I have treated all the carbon parts as if they were metal and will also be experimenting running without anodes as the boat is kept in a dry stack but monitoring corrosion very carefully.

All The Best
Peter

As Peter said they're made by Albright but are available here in the states. We use them quite a bit. The model you're looking for is probably the DC88 and they're commonly referred to as "reversing contactors"

Hi All,
Made lots more progress on the wiring all the basics are now in. I have kept wires for different functions in individual trunking where possible, also finished of the rev counter mounting pod and installed it.

Peter

This project is really amazing! I wish I could give my boat this kind of upgrade.... What is the latest status on the D6 435 engines, what upgrades have you made and what kind of horsepower and performance are you expecting?

Regards
Gustav

Thanks Gustav,
435 engine mods:
1. High capacity large diameter raw water cooling pipes this allows better cooling as the water is less turbulent.
2. An increase in the common rail pressure of 150bar.
3. A remap of the engine ecu to take advantage of the increase in fuel pressure and also increase the max rpm from 3500 to 3750.
4. Large diameter freeflow exhaust system.
5. Cool air feeds to the engine air cleaners.
These modifications should make around 500hp with the torque deliberately mapped out so it doesn't exceed 1000 nm, in it's old configuration the boat ran 72mph with the reduction in weight of around 1300lbs and the increase in power i am expecting the boat to run 78mph plus with the ability to run wide open throttle all day if you want.

All The Best
Peter

any updates on the project?

Hi rickg1984,
At long last the 12 volt stainless steel actuators and synchronization module have arrived so i have been able to finalise the geometry of the mounting brackets, they have much more stroke than i actually need but it will enable me to test beyond the wings efficient range which will result in more drag.

Peter

I had some Volvo penta big wigs in at work the other day and showed them your project on it but cant put what they said on here lol

Hi All,
Diesel filler and vent pipes are now installed, visual flow meters for the dry sump system are fitted and all the hoses have been swaged and installed permanently, also completed the wiring for the battery master switches.

Peter

Hi Peter nice work as usual, any reason you went with a 90 degree fitting in the fuel fill line as opposed to a smooth bend? The dry sump system is for the drives?

Hi Noli,
There is about 2ft 6 of vertical pipe before the 90 so i think gravity should drive it ok as i need the room for fender storage and i can just about crawl into the space for maintenance. Are you coming down to Keywest for the races it would be great to catch up we leave on the 20th October can't wait, we are also doing fantasy fest!!! i am going to have Carolyn painted...:cool-smiley-011:

All The Best
Peter

Just to let you know, your tread has inspired me to do something about my propellers.... Currently run a 29 feet boat with single stepped hull that weigh in at 2800kg with a VP D4 300 diesel and DPH drive. It tops out at 42 kts with 3470 rpm but feels like it's much more there as hull is running very wet and I get zero bow lift when trimming out. Have just bought a set of G9 props and will send to Steel developments which you mentioned in your tread. The G propellers are really huge with 4 blades at the front prop as you probably know. Looking to do the following based on what you and other have discussed in the tread, however your input would be much appreciated!!

1. Remove 35% of the blade area of the front prop, leaving the diameter the same removing most of the area from the bulbous front section if deemed appropriate.
2. Remove unnecessary blade are on rear prop, leaving the diameter the same removing most of the area from the bulbous front section if deemed appropriate.
3. Thin and sharpen all blade edges.
4. Equalize pitch between blades.
5. Press a lot more cup into all blades to help with bow lift.

Do you think I'm on the right track in terms of mods and going up one step in pitch?
Regards
Gustav
[ATTACH=CONFIG]509061[/ATTACH][ATTACH=CONFIG]509062[/ATTACH]

Hello Gustav,


Before starting these drastical ideas; have you already tried to move the LCG back?

I run 3 ( non stepped ) mono hulls with 350 hp D6, with DPH's , weight of the boats is about the same or even heavier.
These boats all run 44+ kts and are perfectly trimmable, although one feels nicer than the other because of weight distribution. Trimmed nose down, they reach max 36 kts! And when trimming the bow up they keep on gaining speed up until the ideal setting.
With bow down as you mention the step may not ventilate right and even ruin full waterflow to the props.

regards

Paul

Hi Gustav,
Removing 35% of the blade area on the front prop is a little drastic i would go for cupping front and rear props first without changing pitch, as your engines are only running 3470rpm the cupping will load the engines even more until you trim out. As Paul said it is worth checking your longitudinal centre of gravity and if it is too far forward move heavy items towards the rear. It may be possible to gradually reduce the blade area on the front prop but i would do this in stages no more than 10% at a time, ideally you need to strip the lower unit to check the load wear patterns on the gear teeth.
Please keep us informed of your progress

Best Regards
Peter

Hi All,
Lots more progress on the wiring have also modified the strainer caps so that i can install a hydraulic quick release coupling which is normally connected to a two bar relief valve to protect the system from being over pressured, i can also use the same coupling for flushing the engines, all the parts are made from 316 stainless which i have machined internally and externally to reduce their weight and given them a quick polish.

Peter

Peter

Great idea and again serious boat porn!!