26 Twin Cat

[SJFE]

I received the last delivery for this project today. I am heading out to the shop to work in this and the Rio in a bit. I hope to get the esc's cooled and water proofed tonight. I am impressed with the little 380xl's. The are about 20 grams lighter than feigao s motors. I am hoping the longer rotor will provide a little more torque along with the higher rpm. Note the clear water jackets on them inthe boxes. I am ordering heatsynk & fan setups for the exposed end of the motors. Not unlike what I ran in the jolly with the Feigao motors. I'm hoping to get started on the twin motor mount tonight . This is all while I fab the reverse gill bracket for the Rio. Wish me luck.

[calcagno45]

Thats some long little motors. You plan on running 7.4V to each right?

Nice setup. How far apart did you plan to mount the drivetrains? I notice you said something about a double motor mount so I assume fairly close together??

[SJFE]

The drives will be behind the tunnel as close together as I can get them with 40mm props on for spacing. Yes each system will run on 2s-1p 25c polly rc packs. I will be cutting those props down a bit for the first couple test runs. I want to run K40s but I dont know if I will be able to.

[calcagno45]

Shouldnt double the torque allow you to be able to run more thrust, ie the larger props?

[SJFE]

I am not sure of anything with this one. No one has used any of these parts or install twins in this hull yet. I have quite a few bucks invested so I am taking no chances.

[Mich. Maniac]

This is gonna be a rocket! The transom should be plenty strong with the torque. I would be more worried about the hull bottom where the motors mount, it seemed pretty thin and weak. I imagine with the twins it might even corner well.

[SJFE]

Yeah it may turn well we will see. I am putting down some suport under the mounts. I did get the mount drilled tonight. Tomorrow I will get it installed.

[SJFE]

Progress

I had a good morning/afternoon. I got the motor mount done & started the outdrive's mount. The tunnel got reinforced with some medium cloth & 1/8th ply. I attempted to bend the O/D mount so that the O/D's would line up on center with the rotor out put shafts. As you can see in the pictures I'm close. I started slotting the lower mount holes for drive ajustment. The wifey woke up and It's break time untill she leaves for work. By the end of the night I'd like to have the motor mount, drives mounted , stuffing tubes bent, drilled & every thing set to cure. I'll have my hand full.

[kahnen]

The Traxxas motor plate was a great idea! Nice, neat, and uniform.

[Eyekandyboats]

shoulda coulda woulda run the motors in the sponons

[Avanti]

shoulda coulda woulda run the motors in the sponons

yup thats what I was thinking last night when I saw this

[SJFE]

Spread your props out to far on a small hull and she will turn like a pile of s_ _ t. The drives should be as close to the inside corners of the tunnel on any cat on order to handel correclty. How would one do this if the motors are down in the tunnels?

[Avanti]

I use to build race cats; never in my life saw a full size cat with props in the tunnel.

[SJFE]

I didn't get as far as I would have liked tonight but I'm not complaing. I have allot of domestic work to do around here tomorrow. I should be able to get the stuffing tubes in and assemble the cables.

[SJFE]

We are not discussing a full size cat . Not much translates from full scale cats to electric models. This hull handles like crap to begin with. I bet this corrects some of the handeling issues.