Carbon fiber single daytona build

[Chris Nason]

looks like that ruder might need to be shortened a little.. so the angled sponsens are to help with cornering ?

[kfxguy]

Here's how I have the prop set now... 3.45mm up. It would have hit the bracket before....
Notice where the prop would start biting at....well I think it would actually bite closer to the hub because the way it rides...

[kfxguy]

Here's the rivercat. ...






My theory is that the bottom pointed part on the daytona rides in the water deeper than the flat of the rivercat sponsons. So...when I set the prop depth, it throws me off thinking the prop on the daytona needs to be lower like the rivercat but in reality it needs to be higher because it rides deeper...I may be wrong but on looking at it, that's what it seems to me.

[kfxguy]

Ok here's the daytona sponsons....

[kfxguy]

The Daytona is what is called a 'dihedral design' Chris. It is a whole new ball game as the sponsons are not flat like a Rivercat.

BTW Travis, it looks real good in the water. I have seen many with the stern deeper down when sitting.

It does sit nicely. The prop adjustment is total opposite of what a flat bottom sponson wants. I guess the boat runs lower in the water (well the very bottom on the sponsons because they are pointed). I'm gonna take some comparison pics when I get back home. Had to run get some red loctite. The bearings in my strut came loose with blue loctite lol.

[srislash]

Wouldn't have figured an extra 5" would change things that much.. Is the bottom of that hull much different than the rivercat?

The Daytona is what is called a 'dihedral design' Chris. It is a whole new ball game as the sponsons are not flat like a Rivercat.

BTW Travis, it looks real good in the water. I have seen many with the stern deeper down when sitting.

[keithbradley]

Wouldn't have figured an extra 5" would change things that much.. Is the bottom of that hull much different than the rivercat?

Yes, it's completely different.

[Chris Nason]

Wouldn't have figured an extra 5" would change things that much.. Is the bottom of that hull much different than the rivercat?

[kfxguy]

I need to add something to this build. After running it and starting to get familiar with this hull, it seem as if the prop likes to be high up. Well it'll hit the offset bracket. So what I did was cut the main strut brackets mounted to the transom shorter. This little bit I cut off, was just enough so next time I go run, I can move it up where it wants to be.

I just had to redial the holes and round the corners. I'll put it back together shortly and show pics of the clearance.




And here's a couple nice pics on the water. I won't paint it and put decals on it till its tuned in.

[kfxguy]

I ran to the lake for a quick test run. Had some issues. It did go faster than last time but it's not quite right yet. For some reason my stuffing tube kept sliding forward and hitting the collet. Then the boat like the prop adjustment up high. The prop was almost hitting the bracket do I'll have to make some mods there. The boat was running super wet and you coukd hear it in the motor. Max Rpm recorded in the Data log was 31,706rpm. Max current was 263.0a. Was getting full throttle. The rainbow effect on the end of my flex shaft leads me to believe there was considerable drag and heat right there because of the tube sliding up. Just gotta work the bugs out, sometimes it's a process. Funny how I can build boats for people and have no problems and I build one for myself and it kicks my butt! Well I guess I'd rather it that way because if I sent a boat out having issues like this, I'd be embarrassed lol! Well anyway, here what she once the Batts were drained and I was getting the strut closer to were it wanted but the tube was dragging. (Ran on 6s)

[kfxguy]

So you did run it with the throttle dialed up and got 100% on the logs?

No, when I ran it the throttle percent on the radio was at default 100%. When I checked the log, I'm pretty sure it said 100% but when I bench tested it a couple times (still at default, no changes from when I ran it) it only would go to 56% no matter what I did, until I set the end point at 150% on the transmitter and ran another log. The amp draw was 15 Amps at no load when I was getting 56%. This is with flex disconnected. Then when I changed to 150%, amp draw was only 5 amps. In the video I can clearly tell the motor was not sounding like it normally does, even tho I was on it momentarily.

[Rocstar]

I think i do. I don't think the esc I'd over 6 months old. I dunno. It did read only 56% percent on the datalog. Then I put at 150% with no other changes and it read 100% in the datalog. Maybe this boat is just a turd. Lol

So you did run it with the throttle dialed up and got 100% on the logs?

[kfxguy]

The new software version fixed this issue....if he has an updated controller.

I think i do. I don't think the esc I'd over 6 months old. I dunno. It did read only 56% percent on the datalog. Then I put at 150% with no other changes and it read 100% in the datalog. Maybe this boat is just a turd. Lol

[Rocstar]

I read somewhere I think over on kbb that with spektrum radio's you have to set the throttle end point out to 150% to get the swordfish ESC to get full throttle

The new software version fixed this issue....if he has an updated controller.

[kfxguy]

I read somewhere I think over on kbb that with spektrum radio's you have to set the throttle end point out to 150% to get the swordfish ESC to get full throttle

Well.....I have a Spektrum radio...lol