R2 Hobbies 36" Cat - Twin Drive

[flraptor07]

Well I risked it and they suck up water just fine, what a great boat so very happy with it!

Will have to get some footage of it soon, but I can see myself running some bigger motors in it or even 6s each side lol!

What were the temps. on the ESCs and Motors? Do you have a water pump in the boat? What kind of putty is that?

[Jason4636]

If you are getting any water flow thru your pickups, its just slashes from the sponsons. Never gonna supply water for cooling. The pickups ain't submerged in water. They are riding out of the water. Good luck with not melting your motors and esc's

[dasboata]

Well I risked it and they suck up water just fine, what a great boat so very happy with it!

Will have to get some footage of it soon, but I can see myself running some bigger motors in it or even 6s each side lol!

I don't believe it almost impossible even to get a splash up in those little holes there are even hard to get to work in the sponsons !! where have you placed your water exits as I only see some hoses hanging ? also are those aluminium stuffing boxes that is also the wrong material to you it will not last it is too soft good luck ,

[dasboata]

how about some pics of the bottom !

[Aaron Johnson]

Aaron, congratulations on an excellent build thread. Your photos make the build very easy to follow. I agree RCBB is a great place to shop at least in Australia, (so is OSE and Kintec). Good luck with the twin setup. A double challenge. Maybe we will see some more offerings from R2 Hobbies in 2014? I certainly get plenty of marketing messages from them, but I consider their boat offerings are a little immature yet.

Thanks for the feedback, I appreciate it. I'm having a lot of fun building these boats and I am learning a lot along the way :)

I'm not sure about R2 Hobbies, this cat was quite good quality and my brother in-law has one of their larger F1 tunnel boats and it is great as well.

The deep V's look a bit funny, I am not a huge fan of the float chamber and that's probably why they don't appeal to me.

I really like the TFL hulls, I know they are not the best either but they represent good value in my eyes.

Water pickups in the tunnel not going to work , they need to be in the sponsons and they also need some work with a file or dremel to make them work you need to lenghten the hole in there good luck

Good tip thank you for that, I love the good old dremel so I will have a go! Would you recommend doing the same with the dual pickup rudders that I run?

What were the temps. on the ESCs and Motors? Do you have a water pump in the boat? What kind of putty is that?

No water pump, temps were around the 54 on the motors and 45 on the speed controllers. That is in degrees celsius. The putty is called Epoxy Putty here in Australia, brands such as selleys sell it. Product names such as 'knead it'

If you are getting any water flow thru your pickups, its just slashes from the sponsons. Never gonna supply water for cooling. The pickups ain't submerged in water. They are riding out of the water. Good luck with not melting your motors and esc's

As I mentioned a few posts up, when I put in some decent motors and ESC's I will run a dual pickup rudder and put some Y piece fittings to feed water from both sets of pickups.

I'm not a keyboard warrior, nor am I trying to incite a war. But when I am cruising around at 1/4 throttle, the water outlets are actually dumping out quite a nice amount of water. As mentioned a couple of times, I'll throw in a dual rudder pickup when I go with some proper motors and speed controllers.

[Aaron Johnson]

how about some pics of the bottom !

[satan_in_secret]

hello
I just want to share the R2 36" cat twin power that was build in Thailand. Owner, he run it with 2x 3674 3270kv, 4s batt.
some pic

[Aaron Johnson]

To make light of the thread, that is a cool photo satan_in_secret, my water pickup won't work at that speed hahahaha

[Aaron Johnson]

Here is a quick video of the maiden run, I am really stoked with how well this thing goes. The electronics barely get hotter than the ambient temp outside which is great!

[flraptor07]

That boat looks like it runs pretty nice, time to jump it up to 6s and find a much bigger pond!

[cugino]

Well I risked it and they suck up water just fine, what a great boat so very happy with it!

Will have to get some footage of it soon, but I can see myself running some bigger motors in it or even 6s each side lol!

Really? It works? I wouldnt ever beleive that.

[Aaron Johnson]

Really? It works? I wouldnt ever beleive that.

Who knows mate, 35 degrees Celsius here in Sydney today. I went three battery cycles one after another, she was pretty much running constantly for 60 minutes and esc and motors didn't exceed 50 degrees.

The only problem i have is a small amount of water coming up the reverse spinning shaft.

image.jpg

[daveives]

I suspect that when turning the inside sponson digs in which shoots water up to the pickups, while running full throttle and straight the pickups are not fed any water. You may just be cooling in the turns, and not while running straight. You can see the inside sponson digging in from looking closely at the wake of a Genesis from one of the rear view videos that comes up after running the video above. You should look for a V-shaped depression from the inner sponson digging in when turning.

[Aaron Johnson]

I suspect that when turning the inside sponson digs in which shoots water up to the pickups, while running full throttle and straight the pickups are not fed any water. You may just be cooling in the turns, and not while running straight. You can see the inside sponson digging in from looking closely at the wake of a Genesis from one of the rear view videos that comes up after running the video above. You should look for a V-shaped depression from the inner sponson digging in when turning.

The dual rudder pickup feds water on the straights.

[Fella1340]

If your dual rudder has pickups on both side of the rudder your getting water all the time. Even my boats with a pickup hole on one side of the rudder flows water all the time. Your placement in the tunnel section of your boat defies logic and it's amazing you haven't had a melt down. Where did you get the idea to do that in the first place?