Avanti's Manx, twin powered micro cat

[lonewolf]

Hey looking good!!!I hope the mounting area fits alright for ya... Keep up the good work

[peells]

So I noticed that you have not put the corners on the back yet. Are you thinking of going a little less rounded or maybe slightly squared off with a little taper or something?

[Avanti]

I worked on the manx a bit tonight. Got the motor mounts in (decided to go with 1/16 ply).
I also came up with my drive idea, I will head to the LHS tomorrow after work. I would love to have this boat in the water for our 11-16-08 meet. I post up some pics tomorrow after a bit more progress is done.

[ace028]

I will be waiting, can't wait to see what you come up with! The only thing I can't figure out how to do is the struts, there is hardly any room to mount. (hopefully I can buy the motors this weekend for mine from ebay)

[Avanti]

I am going to just use straight brass tube out the back and keep it short for strength. I need to get prop shafts before I can fully lay it out though.

[ace028]

So it will be non adjustable?

[Avanti]

you will be able to tweak it if need be, but for the most part yes unadjustable

[ace028]

What is a good angle to fix it to? I think the guy on RRR with a similar sized twin cat used 2 degrees up from level. I may end up doing the same thing.

[Avanti]

I will start at flat and work from there

[peells]

Nothing going on with mine as of yet but I got two motors for the next one (I know COPY KAT) LOL

[Avanti]

no progress to show, but I did pick up some goodies for the drive line.

octura OC098L-24C .098 dia. cut cable (flex shaft) left lay
octura OC4PS 1/8 prop shaft
octura Y531 prop left handed plastic
octura OC4PN 1/8 prop nut 5-40 thread
octura OC4D 1/8 drive dog
octura OCFHE18098 1/8 to .098 drive collet
dubro part#2122 3mmx8 socket head cap screw (for mounting motors)
3/16 brass tube (the teflon tube comes with the flex shaft, you will need the next size down brass tube for a prop shaft bushing)

I hope these part numbers help out anyone interested in micros. I believe OSC also stocks most of these parts.

[Avanti]

I have made some progress and will post the pics later tonight.
I started the deck

Here are some of my new tricks:
I will be air cooling the motors via naca ducts, one in front and one behind the motor. the motor boxes will be sealed from the rest of the boat to keep water that may enter the ducts out of the sensitive electronics.
I am also making an adjustable tunnel tab.

I still need to make a new rudder as mine is a hair large for this rig.

PICs to come

[ace028]

I can't wait to see this! Keep us posted!

[Avanti]

added some 1/8 square balsa so the deck would have more to bond to, also some 1/4 square for my motor hatch supports. lastly in these pics a quick side shot to show the steps and some foam in the tips of the sponsons.

[Avanti]

NACA ducts to cool the motors

I am very happy with the way the NACA ducts turned out. There will be two facing the opposite direction on the motor hatch for the hot air to exit. They still need to be shaped a bit when I do the body work.