hi all maiden voyage of my boat any thoughts of modifications or what it needs are greately welcomed.Darren sorry but the video has not worked will try again later

Hi Dazzido

I look forward to seeing the video. One easy way to show it (assuming youtube) is to view it in a separate window and while playing highlight the address at the top bar of your browser. Right click and copy. Return to this message and paste the link straight into the message. It should then show.

Edited: Daz I think I've found your clip on youtube. Let me know if you want me to attempt to show it here.....

Cheers
Craig

Hi Craig the video is now on and when i watch it the boat looks heavy towards the front would,nt you agree?it is taking a while to rise out of the water.The engine is a 23cc zenoah with a 478 prop personally i think the prop is a bit large as the engine isnt revving out once the prop bites.any suggestions on what to do ?can anyone tell me what hull this is?many thanks Darren

Hi Darren

Well done for getting the clip on board!

You should get plenty of advice on here.

These are my thoughts:
The 78mm prop is in my opinion too large in diameter. I am still experimenting with props for my Zenoah boat with various pitches but diameter between 67mm and 72mm.

One thing that does strike me is that your boat spins out on turns. I wonder if it would benefit from fitting turn fins? I’d perhaps reduce the maximum rudder throw slightly to make it less sensitive.

Personally I’d focus on having it more stable in turns first of all. Then focus upon increasing its speed and handling in a straight line.

I hope you enjoyed its first launch!

Cheers
Craig

dazzido wrote:
If you post some pictures of the boat maybe we can help identify it. Post some good pics of inside and transom too...maybe guys will spot some things to suggest adjustments/changes.

Hi Craig thanks for the suggestions other day m8 checked boat over and when i looked at rear end noticed transom was on a slight angle so in turn the strut & trim tabs were pointing down so giving impression of nose digging in,anyway adjusted set to 0% on both & put my turn fin blades on & what a different boat.its a learning curve building & running the boats but very enjoyable all the same.im putting another video up so you can give me your thoughts on my boat now.Thanks again m8 Darren

Hi Darren

Your second clip shows a completely different boat with new life! It behaves more respectably and is definitely much faster! Well done!

As you discovered the weight was not an issue. It was the fact that the mechanics at the business end (tramsom) were set up to drive the bow of the hull down.

In respect of trim tabs (on mono hulls), personally I would fit them only if necessary and only if other alternatives fail to give the desired running.

This clip shows my twin brother’s Miami 55 being run without the trim tabs. It ran a lot quicker without them and was sufficiently stable:



Cheers

Craig

picture from yesterday of inside the boat,any ideas of hull type?

Hi Darren

Thanks for putting up the static photos. I can’t help you on what hull it is though others may know. Aspects of it remind me of the Challenger although I don't think it is a Challenger.

I like the decals.

Did you build the boat from scratch or was it purchased ready to run?

I’d be interested seeing a photo showing the transom hardware shot from the side and directly behind the transom.

From what I can see from the second photo, I’d like to offer two suggested changes to try.

Firstly I would try the turn fins pointing vertically down so that more of the blade is in contact with the water. I think you may find it further helps to prevent spinning out on turns.

Secondly your rudder support bracket seems to slope down away from the transom resulting in the rudder blade way off vertical. (Correct me if wrong here as difficult to tell from the photo.)

If the bottom of your rudder blade is angled towards the front of the boat, it will tend to dip the nose of your boat in turns.

I would recommend that you adjust the set up so that the blade is more vertical and see what difference it makes.

This photo shows my Lynx prior to its first run. Since then I’ve kept the turn fins vertical and I have adjusted the rudder blade so that the bottom leading corner has been moved back (away from transom) by about 4mm to lift the bow in turns.

One final point, have you got a gap between the dog drive of the prop and the strut support? You need a 4 to 6mm gap to allow for the flexi shaft winding in under load otherwise you’ll be losing a lot of power and stressing the flexi shaft. I am assuming here that your flexi shaft drives straight through to the prop with no additional coupling or joint at the transom.

Cheers
Craig

Hi Craig glad you like the graphics,the hull was bought off ebay bare for £30 so i glassed two self made stringers in made my own marine ply radio box and slowly over winter i,ve assembled the boat to what you now see,the engine was bought in pieces along with a zenoah G2D again from ebay for £100,i still have that engine and its going into another boat i have now got but first am going to watercool it.The rudder is on an angle Craig because of the transom just as the trim tabs were,i have filed the bottom of the two rudder blade bolt holes to get the blade a bit straighter but really it wants all the bracket mounting straight,how do you suggest i could do this m8?i thought about getting an aluminium wedge made to bolt between the bracket and the transom,its deffo on the to do list though.Thanks for the advice on the turn fins and the gap near the dog drive i never thought about that m8 and only had about 1mm gap so probably unleash a little more power after doing that.I am wanting to try a three blade prop so bought a cheap chinese 6713 one,all the boat does is rev and go nowhere so that was false economy so have you any suggestions on a make that works?I hope the pictures give you a better view of my back end lol and help you in helping me.All advice is acted upon and im so grateful Craig so thanks m8.That boat of yours did it come from PMB ?it looks expensive and goes well,did you build that from the hull up?take care m8 and i look forward to hearing from you soon.DAZ