hey guys,
i recently descovered the Z-drive with 600 speed motor. is this a good setup? how does it turn?
has anybody used this drive system?
thanks
morgan

This is what you want.

http://www.offshoreelectrics.com/pro...t-oc6str-130da

Ryan

peterpella, I think you spoke more truth than fallacy, however I dont know where you get your experience with motors. I must have the most reliable 700 motor out there......by your data. I have about 40-50 runs in my 700sc, that by your estimates should be deadby now, especially when you add, I run it on 16 racing cells. Than throw in there, that I'll swamped this motor 7 times(at least). Heck I also run this boat over rocks(jet boat) constantly and have even had a midair crash with a 4x4 that destroyed the boat. This thing should be deader than dead. I had white smoke pour out of it about 15 runs ago. btw the 700sc is basically a cordite ss1(which is 12v) with bushings, probably still made by mabuchi.

Plain truth if you cool the brushes and the can you can safely run 16 cells, not in the 8.4v motor of course, but you can run an 8.4v motor on 12 cells.
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speed-king- I hear the z-drive isnt really good for any kind of performance, it's more for scale, basically it's not meant for high rpms. I wont completely kill the idea, you could make something more scale-ish and accept some speed loss. Why not make a surface drive up parts yourself, if I can make one, anyone can.
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ryan- nice job.oh yeah and that hardware looks good too

would the z drive be ok on a smaller hull?
deos it come with motor prop etc?
for settup with the z drive (and outbords) should the prop be fully submerged?

this is my first rc boat and i just want something that i can have some fun and play around with. so it doesnt need to be the fastest boat on the lake.
i also like the easy setup that comes with it.

would a smaller boat (18-20") reach 25 or 30 mph with this settup or is it real slow?

another option i found is the Aqua Craft EP1 outboard is this any good?

i have a rc buggy at home that runs a magnetic mayhem motor with 6 and 7 cell batteries. can i use the speed control out of that in the boat or do i need to get something special?

thanks

Morgan

Hi Morgan

take a look on boats with z- drive, for example Marine MkII ( www.robbe.de ) or Shockwave from Proboat. These boats use simple z-drive systems with brush 550, 560, or 600 motor. If you have motor of that kind taken from buggy you can use it, but you have to choose the right prop.

A typical cheap, but quality z-drive is being produced by Robbe.

For example: Navy-Speed EM 540. This is high - performance drive system with 1.5:1 gear reduction for sport boats.

Set contents: RS 540 e motor, propeller shaft and universal joint.

Product number 4167.

If you want to buy only Z - drive, you can buy Z- drive with coupling with 42 mm diameter prop. Product number 4137.

Peter

Robbe Z drive 4137

I thought we called those strudders not z-drives. The graupner z-drive is scale in appearance and imo a z-drive. Calling those robbe drives z-drives just marketing, they''re steerable outdrives/strudders.

Could put a z-drive in a 20" boat, just have to figure out what kind of boat. In the processyou could decide you want an outboard but lots of real boat can either use a z-drive or an ob.

quicksilver, you right. However these strudders are being called z - drive by Robbe, not by me. But everyone knows what we talk about.

regards
peter

i ve been looking at out boards lately ( i think thats the way im gunna go) i think im going to use the Graupner GTX-650 with 600 Race 7.2 Motor from offshore electrics.com on a 20 inch hull with a ProBoat ESC (4-10 cells w/ reverse). has anyone used or know anything about it? is it a good outboard? what batteries do i need for this motor? can i use a 6 or 7 cell battery out of my buggy or does it need more than that? are trim tabs and turn fins still needed with an outboard? i really appreciate your help on this project.

thanks

Morgan

You are very limited to what you can do. A 6 and 7 cell pack is good. It won''t be all that quick either way. You certainly won''t hit 25-30mph. I believe mine was somewhere around 15mph.

Ryan

I''ve got a question, what is the exact purpose of this project? basically what are you supposed to do? so we can ensure you get a good grade. [8D]

ok. basically my teacher wants me to design and build an rc boat that handles good and is fairly quick. ill be cutting out a hull on the school''s CNC machine and making a mold and final fiberglass hull from that. the machine can only cut out stuff up to 20 inches long so im limited on size. the main purpose of this is to have something cool that my teacher can show to the grade nines next fall so they can see what what kind of stuff they could do in this class. so im trying to keep it on the less complicated side. i hope that answers your question. right now im trying to decide what kind of drive system to use that has a scale look but still gets me reasonable speeds (hopefully 20 or 25mph+ if posible) with a relatively simple setup. will i achieve this with a graupner Z drive or outboard?
thanks

Morgan

also since i am making the fiberglass hull in two peices ( hull and deck) i will have to join the two halves. what is the best way to do this?

Morgan

I use CA to assemble ABS halves and Epoxy to assembly FG halves.

Ryan

To go 20-25mph, I dont think the z-drvie or outboard will do it. In fact theyre probably pretty close in performance. The strudder setups probably have more potential, however 20-25mph is pretty fast. I would think you''d get roughly 15mph with either the ob or z-drive, it''s just a guess, but I havent seen a "fast" stock outboard yet. You''re really limited by the combination of 20" long and scale. To go quick and that small, you''d need ideally a surface drive mono(strut and rudder), a hydro, or a rigger. The rigger wouldnt work for your project, since you could just make one out of wood a lot easier, a hydro would just be tough to shape without experience. I''d either go with a surface drive or sacrifice some speed for the OB or z-drive. A strudder would work but I''m not too hot on them.

The scale looking OB systems will not get you to 25mph on a tiny hull. I''d make it bigger and cut the hull in 4 sections to work with the 20" cutting limit.

Ryan

Morgan

when you have to finish your project?

How much time d'you have?

Peter

Ryan

got no time to answer you

my piranhia crashed but it had run Ok. First run s**t

I have just ordered new one ( hull ).

peter

by the way how to add the text BELOW the text we write?

I ve noticed some have funny sentences

My is BETTER UGLY BOAT TAN WISE MOTHER - IN - LOW

peterpella,
there is no set date that i have to have the boat finished by. my teacher just wants me to get it done before summer (but the sooner the better). im puting together a list of parts and ill post it up when im finished to see if im missing anything.
thanks

Morgan

ok heres all the hard ware that i intend to use for the boat. let me know if im missing any thing. i already have 2-6 cell bateries, a remote, and servo for the rudder.

hardware list: (all from offshoreelectrics.com)

Prop part ID: grp-2317.42……………………………………� ��…………………...$5.50

Strut part ID: ros-stinger-str............................................... .........................................$39.95

Rudder part Id: ros-mini-rud (note: must chose mono rudder style with 2” setback)……………………….$39.99

Flex shaft part ID: oct-oc130L-24c…(assembled)…………………………… ………………………………………….. $19.99


Motor coupler part ID: oct-ocfhe5mm13S(5mm to .130 cable)……………………………………� �…………..$9.95

Motor Mount part ID: ose-drmount (standard mount style)……………………………………� �…………………$7.49

Turn fins part ID: ose-monofins…………………………………… …………………………………………� �……….…….$29.95

Trim tab part ID: ros-spdt-150………………………………………� �…………………………………………� ��……………$17.95

Speed control part ID: hl-je600n……………………………………� �…………………………………………� ��………..$74.99

Motor cooling coil part ID: cen-bjs02……………………………………… ………………………………………….. …$7.99

Water outlet part ID: aero-2010………………………………………� ��………………………………………… …………$2.49

Speed 700 8.4volt motor part ID: grp-6316………………………………………� ��………………………..…$49.99
.
Total:……………………………………� �……………………………………….$30 6.23

morgan

why not to buy lets say proboat hull and use it in your project? Cnc machine is rather next step in cutting parts. I'm not going to talk with your taecher and saying that that was wrong idea........

When I was younger my teacher used to ask me about making DC motors. I know this guy till this time and maybe he was right to explain me something. Now, I'm motor expert.

Morgan, first choose any hull. Buy any deep vee hull. I'm not going going to be a wise guy. START WITH SOMETHING! My wife seeing me sitting at the computer desk use to say: show him the same **** I was forced to get through. That means You decide what to buy. Make a risk! I live in Europe, there are many shops wit modells, but everythime I can talk with the shop guy about motors, hulls, esc.
Making your first hull is not easy. Maybe yoy remember, I made may first hull using balsa wood found in local fruit shop backyard.

So this is my qustions: GOT ANY HULL PLANS?

no i dont have any hull plans. the main purpose of this project is to make an rc boat from the ground up. so basicaly design a hull make it and rig it with hardware etc. i can talk to him about buying a hull and rigging that but i think that would kind of take away from the whole "design" project idea. if i did buy a hull or even get some plans what would be a good hull to get?
thanks

Morgan.

ok
the hull is 23 inches long, 5.5 inches wide, 18 degree deadrise, with hardware etc listed above should i get decent performance out of this boat? " I use CA to assemble ABS halves and Epoxy to assembly FG halves." when you glue the halves together with epoxy do you leave a lip around the edge to use as a glueing surface? my teacher is bugging me to get something more done on it (actually start building it). and i just wanted to know if im missing anything.
thanks

Morgan

Hi Morgan

sorry I was not able to response

my firm sent me to fix some quality problems abroad to the very strange place They didnt even have any net there

What with your project?

Peter