Topic: Cracker Box quarter scale from BAE plans (Read 10386 times)

TomF · « **on:** October 12, 2022, 04:36:06 pm »

It is many years since I last made a model boat. I have always liked the Riva style of boats, and after seeing one recently, rekindle my interest in model boats.
I wanted to make something a little different, with lots of scale detail, bling, and quarter scale (I have a quarter-scale car and motorbike). It also has to work and run well (read fast)!
After much research, I settled on the Cracker Box, which gives a lot of scope for customization since no two are made alike.

TomF · « **Reply #1 on:** October 12, 2022, 04:43:47 pm »

Or this

SailorGreg · « **Reply #2 on:** October 12, 2022, 05:27:21 pm »

Oh yes, this is going to be fun! Quarter scale will give a huge model, and building will, I guess, have more in common with the full size boat than smaller models. Looking forwards to this very much.

Greg

ChrisF · « **Reply #3 on:** October 12, 2022, 05:31:09 pm »

Lovely looking boats and certainly some work in them. Would like to see your bike and car.

Chris

zooma · « **Reply #4 on:** October 12, 2022, 10:06:34 pm »

I raced quarter scale cars for many years - nice size for an r/c speedboat too

DJW · « **Reply #5 on:** October 13, 2022, 10:53:06 am »

Wow... That's going to be interesting..! So am I right that full size is about 15/16 feet...? So 1/4 scale will be around 4 feet..? As you say, plenty of scope for personalising the build. Will follow with interest.

Best regards
David.

TomF · « **Reply #6 on:** October 13, 2022, 11:04:43 am »

Thanks for all your comments.
Length is 115cm.
There is a link at the bottom of my post to the stuff I have made - it needs updating though.
I have been following your build David as well. I intend to add a sound system and a quarter-scale V8 engine as well.
Be posting some pics of the bits I have got together so far.
At the moment I'm scanning the plans from BAE so I can laser-cut everything. I especially bought a laser for my CNC for this project - just about cuts 6mm ply in one pass.

Best
Tom

PS - how do you disable the Verification every time you post?

DJW · « **Reply #7 on:** October 13, 2022, 11:36:01 am »

Hi Tom

Look forward to seeing how you approach the sound system, mine is the limit of my electronics capability... I know it can be improved. Love the CNC laser, I've been looking at them.... Haven't dared push the 'buy' button yet... Which do you have..?

So is that a 'real' V8 IC engine you're talking about..?

And as for verification, I think it's just for the first few posts... maybe 10 or so... Then you're 'trusted' (and not a bot...)

David.

C-3PO · « **Reply #8 on:** October 13, 2022, 01:18:21 pm »

BAE - great decision - look forward to your build blog

This is my Rocket - another one of their designs

Enjoy the build
C-3PO

TomF · « **Reply #9 on:** October 13, 2022, 05:48:11 pm »

Nice - I will probably buy some of BAE fittings, like the rear steering mechanism I'm looking to do something similar. Did you make it yourself, and what about the small pulley wheels?
Do you know a good source of quarter-scale fittings?

TomF · « **Reply #10 on:** October 15, 2022, 06:00:56 pm »

Was considering a working IC V8 like this - https://www.stirlingkit.com/collections/best-seller/products/enjomor-v8-g52-v8-working-scale-model-engine-gas-78cc-dohc-4-stroke-water-cooled
Its a lot of money though, maybe the next model.
I'm using a 1:4 scale V8 that will cover the electric motor.

TomF · « **Reply #11 on:** October 15, 2022, 06:02:59 pm »

And the electric motor

DJW · « **Reply #12 on:** October 15, 2022, 07:24:59 pm »

Wow. That 78cc V8 is a beast. But as you say, it's quite a price. I'd seen this V8. But smaller at 28cc.
https://www.enginediy.com/products/toyan-v8-engine-fs-v800-nitro-engine-build-your-own-v8-engine-v8-engine-model-kit-that-works?gclid=CjwKCAjwtKmaBhBMEiwAyINuwAOwdcepDrChYSh3ytrvvIqipzttOultRWLBYW88KcuKHsmXcxPrlhoClusQAvD_BwE
I guess you'd also be restricted where you could run such an engine these days too.
Out of interest. Which inrunner is that..? Any aim point in mind for the weight of the boat..?
Best regards
David.

TomF · « **Reply #13 on:** December 24, 2022, 01:47:56 pm »

Made progress since my last post and the plans arrived from BAE.

TomF · « **Reply #14 on:** December 24, 2022, 01:52:01 pm »

I used my laser to cut out all the formers, first I had to import the scanned images into Acad and trace the outlines.

TomF · « **Reply #15 on:** December 24, 2022, 01:59:25 pm »

Cracker box is built upside down on a flat surface. I super glued the formers to a ridged board marked out with former positions and centerline. Dry-fitted the keel etc and used super glue to hold everything together.

TomF · « **Reply #16 on:** December 24, 2022, 02:02:23 pm »

Made a stand to fit the profile of the hull.

Martin (Admin) · « **Reply #17 on:** December 24, 2022, 07:02:10 pm »

Looking Good!

TomF · « **Reply #18 on:** July 17, 2023, 04:57:45 pm »

Help - want to upload photos of the build so far and cant.

Circlip · « **Reply #19 on:** July 19, 2023, 09:06:39 am »

Who supplies the Laser head?

Regards Ian.

TomF · « **Reply #20 on:** August 11, 2023, 06:04:47 pm »

Hi Ian
From these guys
https://neje.shop/products/40w-laser-module-laser-head-for-cnc-laser-cutter-engraver-woodworking-machine?variant=40099878797448

Tom

TomF · « **Reply #21 on:** August 11, 2023, 06:27:40 pm »

Dashboard fitted.

TomF · « **Reply #22 on:** August 11, 2023, 06:28:52 pm »

Cant add images, tried resizing but still, images don't appear.
Please help

TomF · « **Reply #23 on:** August 11, 2023, 06:48:00 pm »

Trying again.
Dashboard fitted.

Circlip · « **Reply #24 on:** August 12, 2023, 09:12:13 am »

Thanks Tom.

Regards Ian.

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Author Topic: Cracker Box quarter scale from BAE plans (Read 10386 times)