P1 Puma RIB racing-scratch building

Α first attempt of a DIY stringer drive (or power trim I don t know exactly the terminology)

 

Nice work! Will you build a Wild Thing as well?
I'm curious about your vintage tunnel update as well!

 

Thank you for your interest Jan!
The truth is that I ve promised two small Wild Thing (~50 cm) to my sons for Christmas present (only the hull not the hardware or electronics)...i think I made a big big mistake!!!! A larger version for me is always on my radar
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Regarding the vintage tunnel hull..., well, although I really like the hull and the plans, I realized that it will come out way too heavy for my outboard. Only the framework of the sponsors, without sheeting and foam, weighs 130 gr. So I postponed its build.

Then, during vacations, I started searching info for the work of Jerry Dunlap and I discovered his wof plans. I was impressed, I bought a cheap hot wire foam cutter and now I build my own design wof tunnel hull (70 cm). The sponsors are almost ready and the building process is easy and fun.

I decided to post my build after I have completed the hull, just before fiberglassing. I will keep you updated...

 

A lot of hobby work ongoing Dim, I like it!
Too bad regarding the classic tunnel hull. Although I think with current brushless drives, a little extra weight is no issue!

The 50cm Wild Thing plan sound great. I will post an update soon on mine. The hull is plated / covered and I love the lines of this hull. It is a joy to build as well, although I now realize that the original design with the added longitudinal ribs, might be even easier to build!

The WOF tunnel sounds great as well. I always wonder how to accurately hand-cut the foam to get 2 identical sponsons. I guess with some template, but I cannot figure it out completely. Looking forward to that build!

 

You are right Jan, this is the key. If your templates - sheeting are nicely cut the sponsors will be identical. The manual of the zippkits g30, which is also wof, is also very helpful to understand the technique. I also followed your advice for a small deadrise angle
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I also love the lines of the Wild Thing but I am sure it will much more impressive when you see it on your workbench. I am waiting for you update.

 

Goodmorning guys!
I ve made my first presentation video for my first diy outboard and I like to share it with you:


For some reason the introduction photo diasppears too quickly.

 

Great build and video Dim! If I see your build, It starts itching to build my own outboard as well. It will happen some day

Did you switch off the comments on purpose? If you select 'this video is not made for children' the comments section will open. It might be nice to get in contact with the viewers .

 

Thanks Jan ! I get inspired by your build videos for sure!
Yes I did it on purpose because my oldest son and some of his friends follow the channel and I don't want to read rude or inappropriate comments...
Maybe later...

 

Very good video ,I really like the way you build it.

 

I have said that before but I think that your Bernico deserves a nice handmade Cosy-style outboard.

40 motor, 4.76 flex and a nice cover

 

Yes, that would be the perfect project! I think it will happen

 

OK guys I have to admit that I have been heavily influenced by @Dirk Jan's construction videos and I made an other one for my Penarib.
I always liked these presentation videos because in 3 - 5 min you can see the work of months.

 

Really nice Dim! Happy to inspire you . I feel that in general, forums become less popular in the last years. I guess due to so many social media platforms.
The audience is bigger on YouTube and I met some new hobby friends there already.

On the other hand, this forum is one of the best for RC in the world I think! Many experienced and high skilled members

So I will keep posting here as well

 

Ι totally agree with you Jan.

 

I decided to change the setup of the Penarib in order to lower its center of gravity and make it more stable.

To that end I constructed a semiscale steerable outdrive made of carbon fiber with a 4mm flex shaft and a 3670 2200 kv motor.

 

Nice project! Did you still have the bouncing behavior before you decided this rebuild, or did you get that solved?

I guess the flex shaft will come out of the transom and runs bare to the steerable part you just made?

 

Thank you Jan!
I did solve the bouncing problem by moving the battery way forward. But then the hull run very wet even in full throttle. Moreover, the hull seemed to lean a lot during turns.

I think that lowering the cog would help the sailing behavior plus a bigger motor will give this loose sailing that I couldn t achieve with the 2960 motor of the outboard.

Exactly! Just like the "fake" look alike MHZ outboards.

 

Some progress with the outdrive and the motor mount... This week I will recieve the flex shaft and ball bearings from AE so it will hopefully be back in the water soon.

 

There will be no "dummy" outboard on top?
For sure this will lower the C of G a lot!

 

Nope, no fake outboard...I want to be honest... .