Cat Build(Here kitty kitty kitty)

[Eodman]

Good morning folks nice to be here!

Need some help would like to build a cat over the winter, I want to hang 2 Graupner outboards(the 650s) off the transom. Will stay with NiMh for now, would anyone have an opinion on the length of Cat I should look for? Maybe even what brands to consider?

My son & I use Spektrum transmitters on our Supervee & Traxxas!( waiting for the Blackjack Brushless) So that will stay the same!

I'm guessing that if I use an electric hull that I should add some glass to the inside of the transom to reinforce but I'm not sure!

At this point this is just fun for us, we don't race!

Any help would be most appreciated!

[SJFE]

Hi & welcome. Nice to see another cat guy. I would suggest a Scat Cat 26, BlackJack 26 hull or a H&M super cat-s. FYI The Graupner units are only suited for brushed motors. You will have to replace them for brushless. I for one have been wanting to do a build like this for a long time. I can't wait to see yours :).

[Eodman]

Kitty follow-up

I typed NiCD while my brain was thinking NiMH ! So please just plug NiMH into my first post!

[Steven Vaccaro]

Changed NiCd to Nimh for ya. If I was building a cat I would consider the ep1 outboards. They will handle more power than the graupner one.

[Eodman]

The only reason I was considering the Graupners were that they appeared to be a little more powerful! But I am new to this game so if the Aquacraft EP1's are a better choice I"ll go with them! Guess I better change my wish list!

[SJFE]

I agree with Steven on this one. The ep1 will stand up to more power but is a little more work to maintain due to it's bearings & gears. Well worth it though. If you choose one of the glass hulls reinforcment is not an issue with the exception of the transom. Now with an abs hull you will need to some reinforcment. Keep in mind the weight you have hanging off the stern and plan your battery placment for the proper center of gravity. When it comes to an esc I would reccomend a set of rc hydros or a novak evx.

[Eodman]

Well alright -- We have the outboards resolved(EP1'S) -- the servo & receiver will be from Specktrum -- the esc - hadn't gotten that far! Now the hull -- will a 26' be long enough or should I look for a slighly longer one? I'm not looking for 100 mph but don't want to end up with another boat like our Villian! Don't get me wrong I love the Villian but its a little slow!

[Eodman]

Anybody else out there have an opinion on the ESC? Remember I'm new to this!

[SJFE]

You have to be carfull about the size of the hull. You want it to be light and not much over 26". Keep in mind you will only be able to run a minimum of 19 to 20 turn brushed motors. Anything lower will burn up.

[kck741]

What about Fullers Outboards

http://www.drcwebservices.com/ffe/images/cfoutboard.jpg

You can get it ready for just about any motor you want Brushed or brushless

[Eodman]

Steven - What hulls under 30" do you offer! When I look at alot of the cat hulls It would appear that the motors will have to be mounted way out on the sides!( becuse of the tunnels) But I'm not sure! I think the Kitty will perform better and handle better if the 2 out boards are closer together!

An alternative would be a bracket hung off the transom to mount both EP1's to, but much harder to make look nice!

I haven't ordered the EP1's yet so I'm not sure of the size of the mounting plate of each or the size of the transom area over the tunnel!

Any input would be appreciated!

[Eodman]

Hey SJ where do you live in NJ I'm right by the bridges on Parkway!

I looked at the Novak EVX ... I'm guessing it's the Traxxas Marine EVX you were refering to! That"s nice - easier to wire & water cooling is easy!

I think the Traxxas part # is 3015 although some sites say it is discontinued and replaced, not sure of the new #!

Now I 'm pretty sure the esc is identified ... Now I've just got to find the right hull!

Help me Somebody ...Pleaaase Help Me!

[Fluid]

The BBY ScatCat 26 (really only 24" long) is far too small for two outboards and its transom is impossible to use OB on without major reworking. You should consider the ScatCat 32 or similar size hulls with a flat transom. The Mean Machine may work well because it is wide with a flat transom, but it is heavy.

You should mount the OBs close together in the tunnel, not out at the sponsons. To get the CG correct (about 32% forward of the transom) you will need to put the cells 'way forward to balance those heavy motors hanging outside the boat. Good luck and be sure to post pictures!


.

[mr.mauian]

my MM is 4 lbs. 14.8 oz. without batts. I guess if I run someone over other than a MM they gonna sink...hehe.

[skidooguymxz550]

i say mount them on the sponsons. look at all the real outboard race cats and tell me what you see.