Topic: Scratch build Riva (Read 20882 times)

OMK · « **Reply #25 on:** April 08, 2007, 02:16:11 pm »

Absolutely gorgeous.
This is the kind of quality workmanship that I strive for.

Excellent work. And thanks for the photos.

kendalboatsman · « **Reply #26 on:** April 08, 2007, 02:20:43 pm »

Hello Ian,

The finish on the Riva is stunning.

Clive :)

martno1fan · « **Reply #27 on:** June 05, 2007, 02:12:51 pm »

hi ian shes stunning id like to have a go at one for a petrol motor(water cooled),do you know where i can get plans from?.what wood did you build her from by the way? i was thinking of using plywood with a nice veneer .any input on this would be great thanks.

taxi · « **Reply #28 on:** June 05, 2007, 02:21:34 pm »

Nni i i i i i i iccee!

boatmadman · « **Reply #29 on:** June 05, 2007, 03:05:42 pm »

Mart,
The plans came out of a marine modelling magazine, I can try and find mine if you like, and send them to you.

She is built in mayhogany, with lime strips on the beck. The internal frames atc are just a redwood from b&q.

Mine is single diag 2mm planked, and it was really hard, I would suggest you build in a thin ply and veneer with a 1mm or so plank.

There is a desrciption of how I made the screen further back in the thread.

If you have any q's, ask away.

Ian

martno1fan · « **Reply #30 on:** June 05, 2007, 04:34:27 pm »

hi ian id love the plans if you could find them,i was a boat builder for a few years so the planking isnt a problem but sourcing the wood might be.i have lots of birch hardwood here but im not sure id be able to cut it so thin on my table saw ??? which is a pitty.if you find those plans pm me as id love to have them.

boatmadman · « **Reply #31 on:** June 05, 2007, 07:12:48 pm »

Ok, I will hunt them down.

I got my timber here: http://www.model-dockyard.com/material/timber1.asp

Ian

John W E · « **Reply #32 on:** June 05, 2007, 08:22:31 pm »

If you are still in search of the plans, Ive got the 'freebie' ones out of the magazine and you are quite welcome to them, if you send me a PM with your address.

I have seen mahogany strips 4mm x 0.5 mm from JoTika Ltd.

aye
john e
bluebird

boatmadman · « **Reply #33 on:** June 05, 2007, 10:28:22 pm »

Found them John, thanks

Ian

Martin (Admin) · « **Reply #34 on:** June 06, 2007, 09:09:45 am »

My mate Bradders is a GREAT Riva fan, how did you get the silver effect on the windscreen frame?

Martin

boatmadman · « **Reply #35 on:** June 06, 2007, 09:12:36 am »

martin,

Its a trade secret - I could tell you but---- I would have to kill you!!!

Its an optical illusion! The screen frame is actually brass, its just the lighting makes it look silver.

Ian

Martin (Admin) · « **Reply #36 on:** June 06, 2007, 09:29:18 am »

Clever!

HS93 (RIP) · « **Reply #37 on:** June 06, 2007, 10:41:09 am »

a real one

http://www.newson.co.uk/boat/abbate-villa-deste-1966/

also

http://www.newson.co.uk/boat/hydroplane-building/

there are some other nice builds repairs and this sad one

http://www.newson.co.uk/boat/mgb-60/

all at

http://www.newson.co.uk/

Peter

Bradders · « **Reply #38 on:** June 06, 2007, 11:35:37 am »

Hi Ian, that model looks superb, the finish is terrific, well done sir.

Bradders

slewis · « **Reply #39 on:** June 06, 2007, 09:34:00 pm »

Martin
have a look here for chrome paint http://www.kke.be/chromirox.html
I recieved an email from their UK distributors and am pleased to find they are in Derby . I await a reply giving me prices quantities and availability so will update you when I recieve it .

Shane

I intend ordering some anyway to sort out my rubbish fittings on the triple . So a thread on it might well be forthcoming if its any good !

mick · « **Reply #40 on:** July 05, 2007, 10:58:06 pm »

Hello, super build quality, do you have a photograph of the motor layout. Have you used just one speed controller for the twin 850 motors. Mick

boatmadman · « **Reply #41 on:** July 06, 2007, 09:14:02 am »

Mick,

I havent installed the motors yet, I intend to use just one esc for them. I will take pics when I get it done.

Ian

supersonic · « **Reply #42 on:** July 06, 2007, 05:19:19 pm »

Quote from: taxi on June 05, 2007, 02:21:34 pm

Nni i i i i i i iccee!

Well done Ian. I can appreciate the time, effort and swearing that has gone into your build.I am still finishing a huntsman
wood kit and I have been at it 6 months.
Supersonic

mick · « **Reply #43 on:** July 06, 2007, 08:50:42 pm »

Thanks Ian, look forward to photo's. Have recently started a Chris Craft Triple from a plan. I am following 'Shane's' build, however, addition advice is always useful. I may install twin motors although the plan is for one motor. Very early in the build so I have time to change my mind. I have some experience in model boat building. Thanks again...Mick.

boatmadman · « **Reply #44 on:** July 06, 2007, 10:21:48 pm »

Any questions just ask away, always willing to help.

If you look through the slo moshun build log by orby, you will find quite a lot of tips etc for building and finishing in wood as well.

Ian

mick · « **Reply #45 on:** July 07, 2007, 06:58:47 pm »

Ian, followed your advice ref Slo Moshun,planking is not as easy as it looks.

My Chris Craft Triple build is 47" length, 12" beam.

As starting point for the motor setup how does twin MFA 850s, 12" shafts, Electronize ESC, I think 43R, not sure of prop and batteries. I know I have only just started building this model, however I would like to dry fit these components before I box everything in. Mick.

boatmadman · « **Reply #46 on:** July 07, 2007, 07:22:35 pm »

Mick,

I bought twin 850's for the riva, and intend to use an electronize esc when i measure the load on the motors. I have no idea how it will perform though!

Length of prop shaft depends entirely on where the motors will sit.

Cant remember the size of my props, I will measure them next time in the garage.

Ian

mick · « **Reply #47 on:** July 08, 2007, 11:57:15 am »

Thanks for the reply Ian, I am totally confused by the batteries needed, volts, amps, etc,. I have used the large sealed 12v in a Clyde Puffer I built some years ago, and I believe you can experiment with the prop size. Anyway, thanks again.

I will make a decision over the next few days about the motors, to go for one motor or two.

This boat could turn out to be heavy, I am using 6 and 4mm ply, then mahogany planks, so two motors may be a better bet.

I liked the look of your Riva 'setup', thats why I asked your advice....Mick

boatmadman · « **Reply #48 on:** July 08, 2007, 01:09:16 pm »

My Riva is planked straight over the frames - no under layer of ply. The hull bottom is 2mm (I think) ply and is plenty strong enough.

You may be overbuilding using 4 and 6 mm - I used 6mm on a full size sailing dinghy and its plenty strong enough for that!

I would suggest liteply under the mahog planking, and then no more than 2mm thick mahog planks. At that thickness you can just get the curves you need, and still have enough thickness to allow sanding.

Batteries - sealed lead acid are heavy and bulky - think about nimh or nicad, although I understand production of nicads is stopping fairly soon. The space you will have will probably dictate the battery type. one option is to have 2 or more battery packs.

Voltage - 12v is prob best, but be carefull not to go higher than the rated voltage of the motors. An alternative may be to look for motors with a higher rating, run at 12 v . This will give you the option to increase battery voltage if needed to give the performance you want. The down side of that is that current increase rapidly with voltage and battery duration decreases. If my memory serves (and it often doesnt) the electronize unit is ok to 24v.

Ian

mick · « **Reply #49 on:** July 10, 2007, 09:59:12 am »

Hello Ian, have been offline, 'server down' thanks for your reply.

Look forward to the photograph, motor/prop/ESC, /batteries layout.

I have posted 'Shane' as I am following his 'Triple' build as well. He is using a single motor on the 'Dumas Kit'.
What is you view on the use of double UJs.....Mick

News:

Author Topic: Scratch build Riva (Read 20882 times)

OMK

kendalboatsman

taxi

Bradders

slewis

supersonic