Need rigger advice

[spectre]

I'm new to these boats and need some basic info please. I have a used jae21 rigger with a host of issues, temps and handling.
It has a Leopard 3674,think its 2650kv, esc is a mystery cloud 200a, prop dasaboater h7 and batterys are 2 3cell Flouren 3000mah. Boat was setup on 6s and was to much for me, so ran it on 3s [55mph]

Boat has trouble coming out of turn, wants to torque to the right or pull. If I turn left when coming out of turn I can make it work but its not pretty. Cant get a straight line out of a turn. If I accel slowly up to speed boat will track straight. Boat has no issue turning in and is on rails. Turn fin on sponsons is new and the adjustment is pushed all the up in the back as its slotted. Don't know what effect this adjust has on the boat? Can it effect me coming out of a turn?

I have a hitec servo coming this week and a hyperion 4s 5000mah 35c 545 grams.
How do I check CG on this rigger[were]. What is a Basic Cg on a this rigger or starting point.

[spectre]

The Sponsons have 1deg toe in on the front, I read that is good for FE rigger?

[Namba328]

ok for one that motor is a 4s motor. You need to run 4s before you can get a real temp on things and once you run it on 4s then you'll be in the right ball park. secondly once you get a 4s in it. you need to prop down. I would start with a x442 and go from there. lastly post pictures on what your talking about with the turn fin so we can help more with that. Now as it goes for CG you take two fingers and with everything in the hull you hold it with a finger on each side of the tub and find where it'll balance. do this over something soft like a bed so you don't drop it on something like concrete lol. most people say you want your cg to line up with the middle of the turn fin.

[Namba328]

The Sponsons have 1deg toe in on the front, I read that is good for FE rigger?

yes and no. Some will say yes some will say only one side and some say no make them equal. idk. I normally make them as close to equal as humanly possible.

[Namba328]

also the 4s your putting in is going to be on the weaker side for this power plant IMO.

that motor has a max amps of 110 amps (which is a lie). Most of the time this rating is the average. I run that same motor in my p-sport Whiplash and I've blown up one of those mystery's in it because I over propped a hair too much. Now I run venom 4s 5000 mah 50c packs. 1 because I wanted to make sure that my setup was getting way more then it needs. 2 I wanted the weak link to not be the battery and 3 I know that this motor has spikes that are well above the max rating of 110amp.

your battery only puts out a continuous amp rating of 175amps, mine puts out 250 continuous amps. See the window of wiggle room im giving the system? However the hyperions are surpisingly good packs so you should be perfectly fine running that.

[spectre]

This is what I had ordered.Hyperion G3 Vx 5000 Mah 4S 14.8V 35C/65C Lithium Polymer Battery .Should I get something else?

also the 4s your putting in is going to be on the weaker side for this power plant FYI.

[spectre]

ok for one that motor is a 4s motor. You need to run 4s before you can get a real temp on things and once you run it on 4s then you'll be in the right ball park. secondly once you get a 4s in it. you need to prop down. I would start with a x442 and go from there. lastly post pictures on what your talking about with the turn fin so we can help more with that. Now as it goes for CG you take two fingers and with everything in the hull you hold it with a finger on each side of the tub and find where it'll balance. do this over something soft like a bed so you don't drop it on something like concrete lol. most people say you want your cg to line up with the middle of the turn fin.

Ok I have a x442 I could try when my 4s comes in. My computer is down, otherwise I would have photos up, sorry. Txs for the reply. I will check cg when the batt comes in. Thanks for the info, had no idea were the cg should be. Its all a learning lesson for me. Ill try and get a pic up of fin with wifes phone later.

[Namba328]

No you should be fine with that. It just won't have the window of wiggle room that I personally like. But it will work perfectly fine.

[spectre]

Here the fin, what effect does the adjustment have, is it only turns or could it help with me getting onto the straightaway . Glad the battery will be ok txs.

[Thomas Schlarb]

Too many KV.. for 6s setup

[dasboata]

I'm new to these boats and need some basic info please. I have a used jae21 rigger with a host of issues, temps and handling.
It has a Leopard 3674,think its 2650kv, esc is a mystery cloud 200a, prop dasaboater h7 and batterys are 2 3cell Flouren 3000mah. Boat was setup on 6s and was to much for me, so ran it on 3s [55mph]

Boat has trouble coming out of turn, wants to torque to the right or pull. If I turn left when coming out of turn I can make it work but its not pretty. Cant get a straight line out of a turn. If I accel slowly up to speed boat will track straight. Boat has no issue turning in and is on rails. Turn fin on sponsons is new and the adjustment is pushed all the up in the back as its slotted. Don't know what effect this adjust has on the boat? Can it effect me coming out of a turn?

I have a hitec servo coming this week and a hyperion 4s 5000mah 35c 545 grams.
How do I check CG on this rigger[were]. What is a Basic Cg on a this rigger or starting point.

sounds like the servo problem in the turn Joe !

[spectre]

The right sponson is lifting during accel , to the point it riding on the bottom side of the fin, its like doing a half wheelie with one sponson in the water and the other is out the water along with the fin. I got a servo today and will retest

[spectre]

https://www.youtube.com/watch?v=K6fr7wVuSa8 in this vid you can see the right lifting up and riding on the fin,\

[Chilli]

That turn fin angle is causing the right sponson to dig hard into the water causing allot of drag on the right side and loading up your motor. Run a long straight edge or yard stick from the bottom of the right sponson to the bottom of the ski. You want the beginning of the bend of the turn fin parallel with that line. That's your starting point. Also make sure your turn fin and prop are as sharp as you can get it. Your turn fin should be sharpened on the outboard side only and taper the edge back at least a 3/4 inch. My fins are so sharp I've cut myself with them. Most of the fast rigger in my district are set up so the right side of the rudder is parallel with the right side of the tub. If the boat is still pulling to the right after doing all the stuff mentioned, offset the tub right of center between the sponsons. No more than 3/8" should do it. My P-Limited JAE never needed offset but my full P does even though the boats are set up similar and they use the same prop.

CG should be somewhere around the rear third of the turn fin. I actually use a Hitech Mini Servo (5245MG I think) on my full size JAE and it turns great. The H7 is a great prop for the JAE if the KV's are appropriate.

Give us a shot of the interior and a profile shot of your strut.. Your on the right track. The little things make a big difference on a rigger.

[spectre]

That turn fin angle is causing the right sponson to dig hard into the water causing allot of drag on the right side and loading up your motor. Run a long straight edge or yard stick from the bottom of the right sponson to the bottom of the ski. You want the beginning of the bend of the turn fin parallel with that line. That's your starting point. Also make sure your turn fin and prop are as sharp as you can get it. Your turn fin should be sharpened on the outboard side only and taper the edge back at least a 3/4 inch. My fins are so sharp I've cut myself with them. Most of the fast rigger in my district are set up so the right side of the rudder is parallel with the right side of the tub. If the boat is still pulling to the right after doing all the stuff mentioned, offset the tub right of center between the sponsons. No more than 3/8" should do it. My P-Limited JAE never needed offset but my full P does even though the boats are set up similar and they use the same prop.

CG should be somewhere around the rear third of the turn fin. I actually use a Hitech Mini Servo (5245MG I think) on my full size JAE and it turns great. The H7 is a great prop for the JAE if the KV's are appropriate.

Give us a shot of the interior and a profile shot of your strut.. Your on the right track. The little things make a big difference on a rigger.

Wow mike thanks so much for the info, When you say yard stick from sponson to tub ski, im not sure what part of the tub to check, parrel from the fin or to the back of the tub were the water runs[back end of tub] ?

Cant wait to check with the yard stick, as I said im new to this this and learning. As far as the fin I did have the outside only sharpened on the fin. Its not knife sharp and thinned all the way, but the outside is shaped perfect, maybe I could thin, ill try and get a pic. The prop is sharpened and balanced . I have a new servo hitec hs-5646wp to put in .Batt 4s 5000 should be here in a day or to, cant wait will be able to check cg and give it another water test.

So the h7 might be to much for my kv 2650. I read 2000 to 2200 is the kv for this hull. I had got this boat as a RTR and im going thru it. Txs again for taking the time to helping me out joe