Slo mo Shun

[Bob Abell 2Participant @bobabell2]

Thank you, Colin……You`re a real Gentleman!

 

Bob

[Bob Abell 2Participant @bobabell2]

That`s it chaps!…………………Just waiting for Spring now!

The workshop has finally ground to a halt!………Quite sad really, got nothing to do!

 

It feels very heavy?……..Transportation truck required!

 

That should keep me quiet for a short time……..Bob

[Phil Winks 1Participant @philwinks1]

Thats just amazing Bob and truly a credit to you. Did you satisfactorily work out your new charger? remember the camcorder when you trial her won’t you!

[Bob Abell 2Participant @bobabell2]

Hello Phil,

 

Thanks for your kind comments……..I`ve got a good video camera somewhere, but I`ve  forgotten how to work it!  The last time I used it, was 5 years ago….. I`ll fish it out and have a play….suppose it will need a new battery?

 

Haven`t sorted the charging out yet………Still got some gear lost in the post!

 

Bob

[Rick DevonshireParticipant @rickdevonshire]

Hi Bob,

A model of this class merits a separate camera crew leaving you free to concentrate on the the business in hand.  How about your local TV station?

 What about timekeepers?

Rick.

 

[Bob Abell 2Participant @bobabell2]

Hello Rick……..Thank you also for your kind words

 

It`s a pity the weather is so bad lately…..(It`s snowing right now, here in Manchester)…..The big sailing debute is quite a time off……at least a month?

 

I`m not very optimistic about any dashing about, as it feels very heavy now?

 

I`m predicting a heavy bow wave……Which fellow members will find very annoying……..So I had better be careful and considerate, when the time comes

 

However, it should be a great crowd puller at the regattas!

 

Bob

[Bob Abell 2Participant @bobabell2]

THUNDERBIRDS are Go!………………….Whoooooooosh!

 

The transportation truck………Work in progress……..I like it!

 

Bob

[Phil Winks 1Participant @philwinks1]

 Me too Bob best make some chocks though or it’ll run away when you test the motors out of the water

[Colin BishopModerator @colinbishop34627]

Looks great Bob, bet you’re pleased with it.

 

Colin

[Bob Abell 2Participant @bobabell2]

Thank you Colin……………………I`m very pleased with the final overall appearance.

 

Only hope the performance is as good as it looks!……..I think it will really?

 

I`ve got a realistic sound unit, I could instal, but the extra weight could be a problem

 

Thank you for your kind comments…..Bob

[Phil Winks 1Participant @philwinks1]

I’ve got a silly idea now Bob you say a sound unit maybe to much weight! Did you not as a child/young person ever use a spring clothes peg and piece of card clipped to the forks of your push bike to rub on the spokes to simulate a motor sound. Well your cooling fans and some flexi plastic strip combined with that double bass sound box you call a hul Hmmm perhaps not (well I did say it was silly)

 

 

Phil (having a really random thought)

[Bob Abell 2Participant @bobabell2]

You probably won`t believe this……I have already given this idea some thought!

 

Great minds think alike!….So they say?

 

At the moment………The motor drive sounds very harsh with 7.2 v……..What will it sound like with 24v??????

 

The sound unit was originally in a big boxy Broom and the normal motor sounds …….drowned out the sound unit!

 

 

Something to mess with, in the near future no doubt……….Bob

[Phil Winks 1Participant @philwinks1]

 Great minds indeed Bob, or is it a case of fools seldom differ?  I would imagine the sound from the motor will quieten on the water, you could try some styrene foam packing in the empty spaces in the hull, that would reduce its resonance somewhat.

[Bob Abell 2Participant @bobabell2]

Welcome to my thread, Ray Benson and all the members of Colwyn Bay club and many thanks to Duckie for his PR work

 

Here`s hoping my model is a success and looking forward to visiting your club waters on Regatta days in the summer

 

Regards…..Bob Abell

[Bob Abell 2Participant @bobabell2]

Work in progress……….

At last, a place for everything!

It`s been quite a struggle sorting out a good spot all the gear for easy installation and access, etc

 

The drawer at the front contains the Rc, battery, Esc In-line regulators and all the loose untidy wiring and slides neatly out of the way.

 

Haven`t started on the charging process yet……….It`s a bit of a daunting task at the moment

 

Bob

[Len OchiltreeParticipant @lenochiltree67043]

And dont forget gaurds for the 2 circular saws Bob.

 

Len.

[Dave MilbournParticipant @davemilbourn48782]

And don’t forget guards for the 2 circular saws Bob.

 

 Don’t worry, Len. When Bob sees the effect of the full 24v across those motors he’ll think twice about the wisdom of retaining those paddle-blades.

Bob – don’t forget; no more than 2A charge rate (for 2 3/4hrs)for the first few times. Time-consuming but necessary.

DM

[Bob Abell 2Participant @bobabell2]

Thanks Len and Dave

 

If the blades give a problem, then I`ll reduce the size of them first, before scrapping them

 

I`m looking forward to the first outing………There`s a lot to be learned early on!

 

Dave

 

Your time mentioned is a bit garbled……….”2 3/4hrs”……eh?

 

When they get charged…..for 2hrs each say………What then?……….Will this be the first water trial?………..How long a motor run, would I get?

 

How do I store these batteries, when not in use?………Flat as they are now….or fully charged?…………………..And how can I tell the state of charge after being idle for say, a week?

 

Sorry to ask all these questions, but I`m sure others will find the info usefull

 

Bob

[Rick DevonshireParticipant @rickdevonshire]

I keep logging on to this thread in the hope of seeing a report, including pictures of her maiden voyage.  Undoubtedly many others are doing the same.

It seems to have  taken on the aura of the first moon landing!

 Are you any nearer yet Bob

Rick.

 

[Bob Abell 2Participant @bobabell2]

Hello Rick

 

You just keep watching this space!

 

I`m a warm weather boater……………….It`s about 2 degrees here, with an East wind………So there`s no urgency this end

 

Not quite sorted out the wiring and awaiting a Power supply unit for the charger

 

Still waiting for Spring………………Bob

[Dave MilbournParticipant @davemilbourn48782]

 

Your time mentioned is a bit garbled……….”2 3/4hrs”……eh?

 

Cheeky beggar! It’s a little difficult to write “Two and three-quarter hours” in figures on this forum. Does one use 2. 3/4 or 2 3/4 or 2.75? Anyroad, let’s recalculate – three hours and fifteen minutes will do the job @ 2A, after which they will be fully charged. After a few charges you can build up to a charge rate of 5A (for about an hour and twenty minutes) from discharged. ‘Discharged’ for those packs is ten volts on load.

I have no ideas how long a motor run you will get. That is a function of several variables. These include temperature, how long you run at high-speeds, prop pitch/size (aka ‘load’), charge time etc etc. How long is a piece of string? You’ll find out these things with experience.

As for retaining charge etc, hey – I only sell the things; I didn’t invent them! Go Googling, Bob – there’s oodles of stuff out there on NiMH cells.

If you go onto this website http://www.component-shop.co.uk/  and click on the Batteries Explained button then that’s a good start. Our Man Mr Winks has more than a passing acquaintance with them, too.

DM

 

[Bob Abell 2Participant @bobabell2]

Thanks Dave

 

Sorry Dave

 

I didn`t realise you meant 2.75 hours!……..So it`s that precise, eh?

 

And then you spoil it all, on the next line and say……3hrs 15 mins!

 

Now then!………Have you actually had hands-on experience with a boat powered by 24 volts?………Any tips?

 

I`m running on 7.2 volts at the mo and now running quite smoothly…….I expect that running in water will calm things down……..and should be great fun trying the odd burst for the first time

 

I`ve yet to finally position the batteries for trim, so I`ve got the chicken and egg situation……getting to the pond with an out of balance setup

 

Any idea where the boat should balance on the bench?

 

Bob

[Phil Winks 1Participant @philwinks1]

not myday to day keep messing this posting up dooh.

 

Thats looking very organised and busy in there Bob.

When you finally get round to it the bty charging thing is a lot simpler than it looks. give me A bell (sorry couldn’t resist ) if you want Bob and I’ll talk you through it. Just not between the 3rd and 9th as I’m off to Yorkshire (must be mad) to visit view the latest edition to the winks clan (Grandson no.5)

 

as I’m still waiting to order all the bits I want for the homewood and a tug I’m refitting there’s not much inspiration in the shed these days but I’ve not been Idle having mastered some of the intricacies of “delphship” and its compatabilities with Solidedge 2D (Design programmes) and so got my 1st proper design brief off a slipper style launch complete for a mate. Might even build one myself one day,

Edited By Phil Winks 1 on 28/02/2010 19:30:02

[Bob Abell 2Participant @bobabell2]

Thanks Phil……….I`ll certainly be phoning you in the near future, regarding the intricacies of hi-tech battery charging.

 

Your CAD drawing looks very nice and technical……..keep us posted on the eventual build

 

Don`t understand the red line on the bottom drawing?….is it the wave line or something?

 

Bob

[Phil Winks 1Participant @philwinks1]

Its the Hydrostatic line Bob basically a graphical representation of the buoyancy of the vessel along its length. (Paul could probably expand more on this) it does help with determining the balance. That picture is actually the “elevation” view from Delphship (a 3 dimensional drawing program) Also in the prog there is a “perspective” view you can swivel it all over allowing you to view the hull from all angles to check curves etc. Really cool it is.

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