On a similar note to @Airtimeasto could I get some advice on my tow boogie? I’ve had one outing on it so far. I used a 7ft DW Sup board and the huge 1300 v2 axis foil. It got up but I did have to pump the board a couple of times before I was on the foil. I am running 2 x 6384 motors with the Bremote. The battery was a combination of my foil assist packs so only 12s4p p45b cells. I will be building a bigger pack once I’m happy with the set up.
I was expecting more power as I was hoping to use it with my prone board at 50L and something like the axis 999 v2 foil.
Here is a clip with a GoPro mouth mount from the first outing. I’ve tried to replicate the very successful @Jesserosco tow boogie build. Is the aeration you see behind the board normal? I’m thinking I’m losing a lot of thrust there.
I’ll test it with a smaller board and foil soon once we get calm conditions again.
Thanks I’ve started rebuilding the flat bottom end on the board again this is my old wing board. If this is successful I’ll shape up a wider board design.
How wide is too wide. My foam block is 60cm wide? Also I will only add V and rocker in front and rest flat.
@Airtimeasto and @nekitesurfing I had similar issues to both of you on my first two tow-boogie boards, and wish I started with a boogie board just to get it working.
First one was an old prone foil board, too much drag, too much pulled in tail (viewed from the top). Similar to @Airtimeasto. I don’t think that board is the right idea at all. You should try a square tail with parallel rails otherwise it sucks down too much. Look at hadou’s thread where he adds pool noodles to square out the tail. I think this board might not be a great base, but could be solved by fixing the tail
@nekitesurfing my next board was similar to yours, I only had one motor, but the tail rocker and pulled in tail (viewed from the top) doesn’t seem like a good fit. Maybe your problem is different, as the double motor should have easily enough power to pull you up on any foil and board. It looks like you are getting crazy cavitation… which I try avoid on mine and only get when it is choppy. I think you almost certainly can get this working better by reducing cavitation, but I have no idea how.
A big boogie board was easy and worked with nearly zero tweaks other than adding nose rocker.
@nekitesurfing what props are you using? It looks like theres alot of air there. I got a boogie with a one motor built on a catchsurf beater board so not really surfboard but not really boogie board and it works ok. When it torque rolls the motor breaches sometimes and it aerates like that with loss of thrust. Yours isnt breaching like that so might be the props causing it?
Thanks for the reply. All tips appreciated. I’m hopeful this can be solved. I’m thinking of how I might be able to make the tail less pulled in. I’m wondering if I can attach anything to the sides….
It is a fixed 2 blade prop that I 3d printed. If this is the problem, I’ll be happy as that is easily solved. I’m away from my PC at the moment so can’t tell you exactly but will later.
What props would you recommend? Happy to go off recommendations here.
@nekitesurfing I’d start with the props then, as that is more than likely to just unlock things. k-parts is the only one doing a pair of props for tow-boogie, I have some of their other stuff and it’s good, postal delivery is slow from France though, no courier option.
My trouble was the same as @holagato where the pulled in tail seemed to make the torque roll worse. Catchsurf beater funnily enough looks quite good because zero tail rocker.
@mterea I think the beater is a good shape too, not quite parallel rails but it works well, the torque problems are more because I use one motor I suspect. Im still playing with trim tab, rope length and mast placement to dial it. It wants to roll when Im up on foil at high throttle and turn out on the right of it.
That’s exactly what mine does at high throttle but I’m sure it’s mostly due to the rocker in board and step in tail. I have a new block of foam so might just start again with flat bottom before my bremotes turn up.
Do you guys think it’s better to keep chimes square or deep so boogie sits in water more?
I’m using KParts Ali 3 bladed prop on my assist and they work great with 6384 motor heaps of thrust no air ration. I thought there’s heaps of options for those motors. I can’t find any other options for my 6579 motors. That’s if you 3 d printed them
Ok while my other boogie is getting adjusted I’m starting to shape up new tow boogie from scratch.
Here are my dimensions I’m starting with let us know if they seem a close starting point?
145cm x 61cm x 12.5cm
Flat bottom right through 35cm from nose had rocker and tapers to point.
Centre pod cable exit point to rear of board 50cm.
Prop to rear of board 31cm.
I was thinking of adding 3 tracks and bolt motor pods to a plate so it can be adjustable 10 to 15cm or should I bolt where it is?
Battery will be inside pelican case inside bottom of board low as possible.
If motor positioning is roughly close it will make it easier I’ll just bolt where that is no foil tracks. Saves me a lot of hassle.
Any feed back much appreciated
Back to wondering about one of these pvc kids kayaks. I need a base for my twin motor setup and I feel like a soft top surfboard isn’t enough of an improvement on the basic boogie.
These are cheap at £160 (lifetime wave 60 youth kayak) for something designed for kids <50kg, 1.8m length, and has useful features like a relatively flat rocker, chines for tracking, and I could get it self-righting without too much hassle. Sharing in case anyone else is looking for a candidate option. The spear fishing boats were too expensive.
This looks interesting, would love to see someone make this work since it’s not too expensive. I wonder how to mount a motor (or two) though. i would imagine the entire kayak is hollow and full of air. So puncturing the hull a few times for a mast mount and wire routing would require some sealing strategies.
We previously made a single-motor version, using a 6 kW motor and a standard board.
Due to its limited usage scenarios, we didn’t go into mass production, but we shared this method with our customers, and some people are using it for fun.
Yeah that is what I’m wondering about too. It has the through hole under the seat and again at the feet. I wonder if just injecting expanding foam into it would make it viable to riddle with holes. The kayak is cheap enough that I might risk it.
The other approach is to have a fully open cut off tail, with half of it full of foam, so as soon as it starts moving the thing drains. I’ve been toying with the idea from RC boat self-righting chambers.
