ok now that I'm getting my KMB jet drive and a new smaller ABS hull. I was wondering what a good motor combo would go well with this setup. The hull is a light 26 inch jet sprint type hull. As many of you know I was running 16c on a 700sc with graupner jet drive. So what would be an equivalent motor/cells? Could I actually decrease cells by going brushless. And lets add reasonably priced to the equation.

Eyekandy bringing up all these cheap esc's is getting me interested.

thanks in advance

~QS

ok a more specific question would the fiego 10xl be a good choice

++ on the question for the exact same boat

I've been toying with the idea on getting the following setup:
Quannum drive 36-55
https://www.unitedhobbies.com/UNITED...idProduct=2044
($33)
HXT120A hexTronik PRO 120A BESC w/ PC Programmability
https://www.unitedhobbies.com/UNITED...idProduct=2120
($49)

2x 4 Cell 4100mAh LiPoly (for 8200 mAh of scary fun running goodness)

I guess - how bad can a Chinese brushless motor be? For $33 USD you can almost get 2 for the price of one Feigao 10XL.

Is the ABS hull the one i linked you ( small H20 boat on fine design ?
If so then a 10 XL will be to much . Try a 12L or 10 L

It is Billing Boats -Palm Beach http://home.wanadoo.nl/stuipsmulders...boats_kits.htm

Hey guy's I'm new to this brushless stuff and would like to know if you can only run lipos with this esc https://www.unitedhobbies.com/UNITED...idProduct=2120 because in the description they only mention lipos. Could I run nimh packs with it? Thanks

yes it can
But if your new to electric then lipo should be the farthest from your mind

Thanks, that's why I wanted to know if it would run nimh's, I don't really want to bother with lipo's yet

ok I hate work, I miss so much here lol.

Eyekandy yeah its the palm beach boat. We got a deal on a KMB drive with the boat.

For the heck of it lets say I used a 12L, how many cells would that require, I guess I'm just confused as to how to quantify the difference in voltage and RPM in a brushless vs. brushed setup. So if you were me and wanted more power, but wanted to go lighter, what would you do?

Like lets say I go lipo too, which is on the table at the moment. but if you could give me lipo and reg. cell #'s, that would be great. I'm sorry I'm such a pain, but I want to break into this side of boating, but dont really know how to set it up.

Also what do you think about odessit's setup idea. good motor? I see on that site someone said it was a good replacment for a 400, we dont want that(need 700) but is that guy right?

good esc? I saw you had recommended some in your thread which I had in mind.

~QS

Ok so you can use the 12 L . . . it can be any where from 6-12 cells max!.
Do not run lipo . its a jet boat so if you have lipo and you are launching it off rocks and docks then there is a good change it will blow out and vent. So no lipos.
as for esc. you can get away with a 80 amp esc.

Ah see, I knew you know me . So you think that will be a worthy investment? As in will this give more power than the 700sc on 16c? I'm really dumb with this brushless stuff.

Sitting here thinking about it, and how the brushless system will lighten the boat and how the reduced cell count would lighten it further. I had thoughts of the limitation of a jet drive, that being at a certain point the boat will be too high out of the water and not be able to feed the pump with enough water and cavitate. 6-12 cells sounds nice to me. If I went lipo, I reckon would make the boat too light and not really be fun going up rapids if its sucking air constantly and lighting on fire.

no a brushless motor is usually heavier than a 700.
Don't worrie to much about weight

Well I guess 12L it is, only problem I foresee is making or buying a brushless adapter for the drive, since it has a built in mount for a 700. Probably wont be a big deal. Thank you for the advise, this doesnt sound like it's going to hurt my wallet much in fact I'm going to save money on batteries now plus it takes a long time to charge 16 cells.

On another note, this is going to make for some good videos this spring, I'm going to fix the other boat, have this new boat and if odessit comes up we'll have a third jet boat, think the villain is getting fitted with a camera Hope you don't mind running your boat up some rocks.

12L it is.
I've googled a bit on Lipo and H2O - I guess not a good mix, but it would provide for colorful fireworks display

Since I have to start from scratch - what are the good batteries to get?
I only toyed with small scratch built airboats (running LiPoly) and really have no idea what runtimes to expect from 12L / Jet Drive. Quicksilver what's the mAh rating of your pack and how long were the run times on your jet boat with 700sc?

well, right now I've got some 2400mah sport packs, nothing great. Run time is about 7-10 minutes, using 12 cells in series. Now I was going to get some buy packs at cheap battery packs.com, however someone found some good packs at radioshack of all places.
Thats my plan as of now, I just havent bought them yet.

6-cell GP3300 packs, for 25$.

I'm going to buy at least two of them take them apart and assemble them with battery bars and upgrade the wires. I would guess we'd get about the same run time, since we'll be going brushless and the amperage is going to go up. The GP and IB packs are the best from what I gather. I might have to go down to southside and see if the local radioshack has them.

I saw those battery packs at radioshack too! I was like what?!?! I think I will be ordering some from there before spring hits.

been sittin here today, trying to figure out how to make that boat not look ugly, think I may have found a solution and it's to the scale of the boat. There's not too many ways to go, either sedan style or an open jet-sprint type design and I'm not one for little guys heads sitting in my boat.

I think that 12 cell (14.4 V) on that motor may be too much for the drive.
Recommended RPM range is 15-20K RPM
12L is 2048 RpV, running at WOT is 29491.2 RPM, way outside the spec (I may be talking to a wrong crowd about the specs, we are here to push everything well beyond recommended specs)

I am still thinking to get the following
11.1 LiPoly (3 cell pack)
Feigao 9XL (1853 RpV and higher torque/lower Amps over the L series)
20568.3 RPM
The extra weight of the XL motor will balance the lower weight of the LiPoly packs.

LiPoly packs will be sealed in a waterproof box. Maybe even with water-cooling coils around the packs to cool them down because they are sealed. What you all think?

I dont know, honestly I am a bit rough with my boat, so I am a bit concerned about lipo's. Still planning on the 12L, it's smaller than the XL and I dont need to run 12c, 8c sounds about right to me. For me this is a huge difference, being my old boat was 16c, this is cutting a lot of weight going brushless. There's nothing that says we have to do the same thing, but if your going to use the lipos, I think your going to have to be careful no matter how you set it up. With this and my last boat, I want to not have to be careful.

btw, went to radioshack, I want to strangle the manager there. Sold me generic pack, telling me it was the GP3300, said yep its the same item number, I just got home cut it open with a box knife and what do I see unmarked neon green cells [:@][:@] Since I'm going down in cell count anyway, I'll order one or two from cheapbatterypacks.com .

Oh I'm going to Vestal on tuesday, have to give someone a ride, so I'm going to stop by the local LHS's.

Would it surprise you to learn that MOST of the brushless motors made today are made in China? Hacker motors (that they tell you are made in Germany) are made in shenzhen, China. AXI motors (that they tell you are made in the Czech Republic) are made in Zuhai, China. I have been to the factory.

China is the new leading world power. ALot of people just don't know it yet. The number of American Children taking Chinese as a second language is out growing all other second language classes. Can you guess why? The have called China the "Sleeping Dragon" for hundreds of years for a reason.
I am just saying that it does'nt supprise me because most everything is made in China.

One thing though, although something is made in china, it doesnt mean theyre all the same quality. Duh, but it should be taken into consideration when buying something like a brushless motor. For instance I'll take a fiego motor made in china over a no name motor made in china. Of course it gets harder everyday to find a brand name in a sea of cleverly branded inferior products.

I agree, I overgeneralized things. However I was not aware that some $$$ motors are made in China.
I am not surprised with regards to "Made In China" / "Made In CountryX" at all. Once upon a time, I was working in a factory where we were making "Proudly Made In US of A" paper towel holders by peeling off "Made In China" stickers and placing whole assembly in the cardboard box.
That place went out of business a while after.

Quicksilver - where are you getting the ESC & Motor? offshoreelectrics?

Well, I gonna go through offshore for the fiego 12L and then use eyekandy's suggestion of this esc Which is probably overkill, but then I have more room for bigger motors in the future.
http://www.himodel.com/electric/HiMo...-100A-OPTO.php

This is unless offshore has a deal on a combo in the near future.

Its doesn't matter where it is made. Sure there in china but what isn't
There is a Honda plat down the road from me who makes cars to ship to china and USA.
Sure they are driven in China and the Honda is Chinese ( or Jap?) but still
Regardless if the manufacturing location they are all made differently.
The are Not made in the same factory. Or with the same time and quality.
Hacker are a Way better version of a feigao. Most of you people Don't race and Opt for the feigao cuz there Cheap. Me being a racer i have some hackers and some feigaos for my sport boats.
There is a huge difference in performance. So what does that tell you. I have ran the same 10XL one feigao and one Hacker and got way huge results.!
So regardless if you say Oh its made in china doesn't mean any thing.
Chinese work ethics are way better for the working stand point. But when it comes to ideas they lack a bit because of copying al ot of products that were American or German made. Or buying a boat and copying it and calling it there own
Same with the cars They are making a full line or Merc and BMW cars that aren't really merc and BMW. they are the exact body parts just with a crappy motor and poor quality and sold for 50% less then real.
BTW good choice for the motor 12 L sounds cool