Yes, another Catamaran Build!

[ace028]

Ok, here are the goods, I tested them, they work without a pistick. The quality seems to be really good. I think I am definatly going to need to add some extra bracing once I get things situated, because I think these are going to rip and tear things up with all their power. I don't think that the esc has any kind of programming, so I am going to need to get a LVC device so I don't kill my lipos. Also the motors have a flat spot already made on them for the motor coupler, over all I'm pretty satisfied so far, well see how they hold up under load, but you really for the price who can complain?

Oh best of all I got my free gifts!!!! In the ebay listing it says you get a free gift, like that makes me want to buy their product over someone elses lol.

[ace028]

Ok, thoughts on motor mounts. I think I may just epoxy the mount in place instead of trying to get fancy and make it removable, I should be able to acces the motor screws so no big deal.

Do you think that the fan will be sufficient on cooling the motor, or should I add water cooling to the mount? I know the aluminum would be the best for heat dissipation, but I don't have the fancy stuff to machine aluminum to acomidate for water cooling so here are my thoughts for materials,

Aluminum plate
carbon fiber
brass with a tube soldered to it for water cooling

At this point I am leaning toward the carbon fiber, any thoughts?

[Avanti]

I just epoxied in some 1/8 lite ply for my mount. and I am using air cooling only but have ducts for outside air.

[ace028]

Do you have any pics of your mount?

[Avanti]

check my thread I don't think I have a good shot of it. I just used 1/8 ply and drilled the four mounting holes and the center shaft hole, then epoxied it right to the bulkhead.

[Avanti]

after looking at you pics, I noticed that my motors are going to be much further forward than yours. You may end up having to add weight the the front.

[ace028]

I didn't notice your mounts until you mentioned it, I think I am going to do something similar. Your right about the weight. I love your ducts by the way.

[ace028]

I have made my motor mounts out of carbon fiber. I added a hole to let some air flow through the mount, I didn't want to put too many holes and make the mount weak. I have glued the mounts in, and test fit the motors. So far so good. Next is to mount the stuffing tubes, then finially start to make the top.

[Avanti]

looks good

[ace028]

Thanks.
In the last pic, the bulkhead got a little crooked when I was gluing, but the motors are straight. Pictures sometimes makes things look bad. In the pic with the mounts glued in without the motors, it looks much better then the pic shows.

Time to take the renegade motor coupler out to use to mock up the tube till steve gets some more couplers in stock again.

[Avanti]

where did you get your cf plate

[ace028]

I got it from here
http://www.protechcomposite.com/servlet/StoreFront

This is what I bought

http://www.protechcomposite.com/servlet/the-53/carbon-fiber-sheet-panel/Detail

I chose to use the CF because I think that CA and epoxy adhear to it better then brass or aluminum, and it is easy to work with, just messy, wear a mask, the dust is not good.

[ace028]

I took the coupler out of the renegade, only to find out that the shaft is not 3mm, I think it is 1/8 or 3.17mm. I measured 1/8 with my ruler, so I have to wait till I get some funds to buy the couplers and other misc stuff.

So I couldn't wait untill I get the couplers to install the shaft tubes, so I installed the rear decking, leaving enough room to install the tubes (barely lol). My hatch will be nice and wide. Also I have included various angles of the motors, keep in mind that there is a lot of dust on everything. I beveled the edges of the main stringers so that the motors will be able to come out and back in with out any trouble. Everything is rough sanded, I need to true everything up, and finial sand, but that is after I figure out how to do the struts. I will work on the hatch next, but I am going to take a break for a while. So far I am happy with how it has turned out, not too bad with limited tools and funds. I need to buy some batteries and servo though so that I can get the finial layout of the electronics. I suspect that if I need more forward COG, I can put one batt through the bulkhead hole up into the bow area.

[ace028]

Ok, I started the hatch, pretty plain right now, but I will add a offshore look to it.

[peells]

Well you have made some progress very good!!!! I like the carbon fiber mounts they are nice!! Did you epoxy them? or just use CA? Epoxy sticks fantastically to that stuff (that is one of the methods the aircraft industry uses.