The ” LRR Bodgit & Scarpa”

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The ” LRR Bodgit & Scarpa”

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Viewing 24 posts - 1 through 24 (of 24 total)

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8 July 2014 at 23:31 #50237
The Long Build
Participant
@thelongbuild
Many Moons ago our ship yard obtained the Book " The Basics , Model Boats"

with the intention of building the boat within the publication.

Anyway some years later this was built by another member so we thought it was a bit pointless building the same.

Recently it has also been announced that the 2015 Model Boat Convention (shameless plug ) theme will be Glynn Guest design Models. and as such thought that going from past records I had better start building now.

By chance when sorting some mags out I came across the Model Boats October 2002 with the free plan for the USS Hibbard, which to a degree used the same hull and technique as the 1 in the Book.

The Dockyard (Table) was cleared and building commenced , luckily I had most of the bits required to certainly start the build, and in a few hours thanks to the wonders of Super Glue the basic hull was completed as seen below, along side is also the continuing rebuild of Bobby from 1976

Edited By The Long Build on 08/07/2014 23:33:19

Edited By The Long Build on 09/07/2014 00:04:20
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8 July 2014 at 23:31 #6957
The Long Build
Participant
@thelongbuild
Build From Model Boats Plan October 2002 ” USS Hibbard” by Glynn Guest
8 July 2014 at 23:59 #50238
The Long Build
Participant
@thelongbuild
Here you can see it alongside the build from the book , this being slightly smaller the new version

Next, I star think about the power source and am thinking that I can get a good running time of the Lead acid battery which will also double up as the weight required for the stability of the flat bottom hull ( I hope)

I have cut a slot through one of the supports which will also keep the battery in place

Now I know you are all desperate to ask about what is that on the stern. Well as I do not have any helicopters appropriate for this build at the moment , the dome is the special ops area for the stealth Quadracopter that this vessel would naturally have.
9 July 2014 at 10:46 #50239
Diede van Abs
Participant
@diedevanabs87670
That is looking like a nice sleek ship, I like it already (except for the bridge area, but that's personal taste).

I am very curious as to how this will perform, maybe in a far future, when I ever finish all the other projects that are on the shelf… A naval vessel should be a nice addition to my, currently 100%, civil fleet.
9 July 2014 at 17:54 #50240
The Long Build
Participant
@thelongbuild
When testing I will try to have it videoed. The bridge may make more sense when the masts are in etc.

Just noticed the gun on one of the pictures, that will not be the size of the actual one being fitted, that is for another model.
9 July 2014 at 23:13 #50241
ashley needham
Participant
@ashleyneedham69188
LB. What motor are you using? Glynn always horribly underpowers his boats (note…personal opinion only) and a speed 400 would be good I recon for this or did it have a 500 of some sort??

My HMS MIdge runs a 400 and 6v x 4.5Ahr SLA and not only goes very well but has a reasonable endurance, besides as you have stated, needs no other ballast.

How long and wide is the bodgit?

Ashely
10 July 2014 at 10:23 #50244
Bob Abell 2
Participant
@bobabell2
I do like your model LB, it`s looking really nice!

I reckon Glyn Guest is taking over from where Vic Smeed left off…… ( I may be speaking out of turn here? )

He`s created a vast number of easy build models and deserves this accolade, well and truly

I would like to know more about his model boat story

Do we know how many models he has created?

All the best Glyn and thanks

Bob
10 July 2014 at 13:25 #50248
The Long Build
Participant
@thelongbuild
Hi Ashley

The Bodgit is:-

L=36" W=4" H=9"(just superstructure, after mast maybe 15-16)

The motor currently fitted as was available is a Graupner Speed 400, I have a couple of Alistairs he advertised in MB last year which may be used depending on this performance.

Hi Bob

I have asked the question on another thread last week but as yet no reply from GG.

Larry
10 July 2014 at 19:12 #50252
ashley needham
Participant
@ashleyneedham69188
I would like to make it clear that the previous statement regarding powering Glynn`s designs are personal view as stated and would not wish to cause offence to the original designer of the craft, or indeed the current modifier of this design!

Ashley
10 July 2014 at 22:34 #50264
The Long Build
Participant
@thelongbuild
Could put in a brushless and have it planing !!

I took no offence, in fact did not think anything of it until you mentioned it, sure GG has no worries.as you say it was your personal view and I have no problem with any views or comments for the record. Unless you all sa its rubbish in which case I will have to go and hide in the shed
10 July 2014 at 22:52 #50265
ashley needham
Participant
@ashleyneedham69188
I would never simply rubbish anything on the forum, I would only offer my personal view for which i am happy for others to disagree with. There is not much point on a forum without offering your views or no one would learn anything or look at things in another light.

I would freely admit to typing before engaging brain of course but that is a different matter !!

But what brushless would you fit eh??? Thats the question. A 20 watt brushless would be slower, a 200 watt one faster….

Ashley
12 July 2014 at 08:12 #50306
Paul T
Participant
@pault84577
Hi Ashley

That was a very nice disclaimer although you did forget to include the people who might have read your comments, as a reader myself I do feel corrupted by your words (although I don't know which words) and I would feel a lot better if you included the entire membership in the disclaimer after which you should wear a hair shirt and whip yourself with a dead rat until I feel vindicated.

Paul

BTW can I borrow your disclaimer as I could use it before every posting.
12 July 2014 at 10:54 #50310
ashley needham
Participant
@ashleyneedham69188
Paul. As usual I always treat your remarks with the contempt that they always deserve and so no disclaimer is needed (disclaimer).

Regarding power for this boat. Upon the advice of a noted model shop owner..instead of using a 540 or speed 600 for project no1, he has pointed me to a Fusion brushless motor of 1380Kv, which on 7.2V would produce around 9000 rpm at a prop, likely. it puts out about 90 watts I think, so in speed 600 territory (off the top of my head). You can mount it so it drives ahead or behind the mount position, and even swap the shaft about (the air-prop adaptor screws to the outer rotating body, but the shaft can be swapped about to stick out the front to use a normal boat style u/j) The weight saving is simply enormous.

It is about the size of a speed 400 motor sliced in half and weighs probably less that half a speed 400 motor. Amazing. £22 but no doubt cheaper on `t internet. I have purchased an EnerG Pro ESC for it, from J P distribution and a program card. The program card is just so easy to use it is untrue. Things move on apace today

Ashley
26 July 2014 at 21:48 #50715
The Long Build
Participant
@thelongbuild
Not much to report, gave the boat a couple of coatings of doap (Great Stuff ) and then a quick spray , a lot will get sanded probably but it all helps.
27 July 2014 at 12:36 #50738
ashley needham
Participant
@ashleyneedham69188
What most people forget is that the primer coat and to an extent the undercoat are in effect fillers. I usually sand away virtually ALL a primer coat, or several coats, before putting a topcoat on. Balsa is particulary difficult to get a smooth grain free finish on, and I would use a nice thick household undercoat at first to get those grainy bits filled.

Looking good so far. sheet sides is it ?

Ashley

Edited By Colin Bishop, Website Editor on 27/07/2014 15:35:59
28 July 2014 at 13:40 #50758
The Long Build
Participant
@thelongbuild
Smooth Finish, not on this model … Yes it will be sheet sides , nearly there just need to put on the arem for the front gun so it can rotate.
28 July 2014 at 20:19 #50774
ashley needham
Participant
@ashleyneedham69188
Squire. Five minutes on a model that size with sandpaper and a couple of coats of primer would have a smooth surface to rival even the proverbial small persons bottom.

Go on, you know you want to.

Ashley
31 August 2014 at 01:05 #51731
The Long Build
Participant
@thelongbuild
Put the electronics in and the Gun servo, wired it all up and gave it a test bench run, Think I may need to rethink the power source as this sounds quicker than my Club 500 !! .

Will probably leave as is at the moment and then test in the water once the sides are on..
31 August 2014 at 10:02 #51737
ashley needham
Participant
@ashleyneedham69188
LB. Dont think it will be too quick.. I have several boats smaller than this of a similar configuration (thin warships) and although yes the motor is very revvy, they are only just "quick" rather than "really fast".

Yours is 3 foot long and so I would think your boat should move adequately. A speed 480 will be a direct drop-in if you need a bit more oomph…..

An MFA 540/1 (the low powered one) on a 7.2v pack would be an ideal motor, Not too revvy and able to power a 35mm two blade plastic or brass prop no probs or a 40mm three blade plastic one.

Ashley
14 September 2014 at 11:31 #52045
The Long Build
Participant
@thelongbuild
OK , have now doped and tissue paper the hull, sprayed, sanded and the painted with undercoat to make waterproof for some test runs.

Put it in the testing tank only to find it had quite a large list to port, basically I had not thought that on its side the 12v 2.1amp battery would naturally be heavy on its bottom side ( Facing port) Doh.. The picture foes not really show the list but its is bad.

This was sorted by cutting a bit of lead and placing it low in the hull.

Without the superstructure it is quite stable , however I perhaps built the top using heavier material than I should have used and I may rebuild this using much lighter balsa as in 1/16 and not 1/8. To try to reduce the weight above I have now cut out the access balsa within the bridge and stack structures.

I will be taking this to the pond later for a few speed trials, and judging by the pull in the bath it is going to shift.
14 September 2014 at 14:04 #52046
Looverlijn
Participant
@looverlijn
I seem to remember a post some time ago about batteries being heavier at one end than 'tother but I may just have dreamt that.
14 September 2014 at 15:19 #52048
shipwright
Participant
@shipwright
In my model destroyer the main electrical supply is from a 12 volt sealed lead acid (SLA) battery which is installed lying on its side. Experiments in a small pond showed that the destroyer had a significant list to port. Given the longitudinal symmetry of the hull this puzzled me until I investigated the heaviest item in the hull (ie the SLA). Using a flat surface and a steel rod I carefully laid the battery on the rod and moved the battery relative to the rod until I achieved balance. This proved that the geometric centre line (ie the line equidistant from the top and bottom of the SLA) lies above the centre of gravity line. The c of g line is the scribed line in the photo.
14 September 2014 at 18:58 #52051
ashley needham
Participant
@ashleyneedham69188
I have glued a strip of steel under a couple of long thin boats to improve stability. It is not seen, and the weight is where you want it. Builders merchants seel roof ties most suitable for this, just fill the `oles with filler after sticking on.

Your boat seems to have some margin for adding ballast, and ballast that low would mean you dont have to build a new superstructure.

Bilge keels help an awful lot with oong thin hulls to dampen out out fast rolling and so on.

Ashley
14 September 2014 at 21:32 #52061
The Long Build
Participant
@thelongbuild
Yes CG on the battery, lesson learnt.

Test runs in the pond !!, well if it had had a crew, it has none now., all seasick.

Balance was corrected using additional piece of lead velcro'd to the appropriate side.

Will be fitting I think a small keel, when on display this will be hidden by the stand.

Speed was Fast, but duration not great, but then I was playing..

Slight water in take when going astern , thought I had greased it, may it was only a thought so will put some / more silicon grease in.
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