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stahlm004443
02-16-2008, 09:31 AM
hi there,

im new to this forum and relatively new to boats. i have had a few rc cars and planes but now i want to try my luck with building a brushless speedboat.

i already know what hull i will be using which is:

http://www.rchobby.co.uk/thunderflash.html

these are all the electronics i will be using:

motor - http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=2078

esc - http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=4313

battery - http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=5469

any help would be great, and im not sure if that setup would work? can the esc handle the amps from the lipo? is the motor good?

thanks

matt

kin
02-16-2008, 09:44 AM
its a nice hull , but no offence i dun think it be for fast runs , why noy check out other hulls or try rtr sv27 like mine!! lol

stahlm004443
02-16-2008, 09:47 AM
well to start with i dont have much money as im only 15. and i dont realy want speed runs i was just thinking that if im gona buy a motor i might aswell buy a brushless one because there the same price as brushed.

kin, do you know if the battery, motor and esc would work togeather?

thanks

kin
02-16-2008, 09:56 AM
well to start with i dont have much money as im only 15. and i dont realy want speed runs i was just thinking that if im gona buy a motor i might aswell buy a brushless one because there the same price as brushed.

kin, do you know if the battery, motor and esc would work togeather?

thanks

oh ok~ than i`ll say wecome to the boating world ,, they should work just fine but dun take my words on it , let some experts here give u some sound advice too before u make the purchase . many guys here r really frenly and will give u thier humble opinion ...

stahlm004443
02-16-2008, 10:14 AM
ok. i think im going to order the hull tonight and i will wait on some more advise with the electronics. thanks

anyone else know anymore, i dont have a clue i new to brushless lol

thanks

domwilson
02-16-2008, 10:21 AM
Welcome to the board. Looking at what you're thinking, I don't think you'll be very happy with this setup. It's almost $175.00 USD. That motor will burn up the ESC quickly. You may want to look to Ebay for a used SV27. You may be happier with that for the same amount of money. Plus you'll get the hardware and radio which may even be cheaper in the short and long run.

stahlm004443
02-16-2008, 10:44 AM
i wont come to that much. oh and btw i live in england. it will come to about £60 GBP which is about $120 USD

what about this esc??

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=5498

thanks

domwilson
02-16-2008, 11:17 AM
With this ESC it comes out to almost $170.00 USD.
That's not including a radio and other support parts. Throw in a cheap radio and you're at about $215.00. A bit pricey for a plastic hull boat. But the ultimate choice is yours. But I do think you'll need at least an 80 amp ESC. Looking at the hull specs. That's designed for a 400 size motor. The Feigao is larger at a 540 size.

stahlm004443
02-16-2008, 12:36 PM
so are you saying that it wont work at all with the feigao 540 motor? i can get a bigger esc.

stahlm004443
02-16-2008, 01:36 PM
ok ive changed my mind im gonna go with this motor:

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=4200

im assuming that i can now use this esc? please tell me if its too small

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=5498

thanks

Rex R
02-16-2008, 02:12 PM
as long as you don't get crazy with your prop choice that motor/esc combo should work*...the battery on the other hand... if you ran 2 of those battery packs in parallel (2s2p), I'm thinking that ought to provide enough margin to avoid damaging the lipos
*that 1st motor would have been way to 'hot' for that size hull and likely would have blown that 18 amp esc on the 1st application of throttle.
edit
ooops. that esc isn't rated for 2s Lipo's, its rated for 13-18v(but the amp rating is about right...if you got a motor rated at approx 1500kv and ran those packs in series (4s) you could use that esc ;))

stahlm004443
02-16-2008, 02:18 PM
ok so i need a bigger battery pack? what about this one:

http://cgi.ebay.co.uk/11-1v-2200mAh-15c-3-Cells-Li-Po-LiPo-Battery-For-RC_W0QQitemZ120222748580QQihZ002QQcategoryZ123849Q QssPageNameZWDVWQQrdZ1QQcmdZViewItem

Rex R
02-16-2008, 02:31 PM
to use that pack (3s,11.1v nominal) you would want a motor more like this one http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=4205 you want to keep your output rpm down around 20000 rpm(25k max)

stahlm004443
02-16-2008, 02:47 PM
ok so can i use any motor between 1500kv and 2000kv?

stahlm004443
02-16-2008, 03:07 PM
ok lets make this simple! im going to use this motor:

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=4200

and this battery:

http://cgi.ebay.co.uk/11-1v-2200mAh-15c-3-Cells-Li-Po-LiPo-Battery-For-RC_W0QQitemZ120222748580QQihZ002QQcategoryZ123849Q QssPageNameZWDVWQQrdZ1QQcmdZViewItem

seing as i dont have a clue as to all this stuff could someone please show me the cheapest esc i can use that would work with the battery and motor. preferably from www.hobbycity.com

thanks again

matt

Chris S.
02-16-2008, 05:14 PM
I'll level with you. In all honesty I would say save up some money and buy one that is already built, for many reasons. You have to understand the relationships between hulls, motors, propellers, and batteries if you are going to succeed in building your first boat. I think you may see more smoke than glory with all of the different battery and motor choices you are selecting. Who ever suggested an SV27 was trying to steer you away from an expensive endeavor and point to something you will enjoy more. The boat runs great out of the box and you wont blow up motors, esc's, and batteries therefore being the cheaper choice overall.

Doby
02-16-2008, 05:23 PM
Get your feet wet with a SV-27. It will keep you entertained for a long time and can be upgraded easily if you want to .

txboatpilot
02-16-2008, 05:47 PM
Get your feet wet with a SV-27. It will keep you entertained for a long time and can be upgraded easily if you want to .

:iagree: Get a SV27!!! You will learn alot and be much happier in the long run!!

domwilson
02-16-2008, 06:09 PM
There are alot of upgrade parts and advice for an SV27.

stahlm004443
02-17-2008, 11:42 AM
its just i dont have that much money so i thought i could make one for less but if you guys think that it would be better in the long run then i will try and find a cheap one but i can only find them for like £170 and i only have £120 in my bank. and than i have to get batterys.

stahlm004443
02-17-2008, 01:00 PM
ok what about a reef racer 2, of a mini v. i like the look of them, there not too expensive and they can be upgraded.

domwilson
02-17-2008, 08:58 PM
Good Choices. Don't count out the Mini-C Catamaran.

Chris S.
02-17-2008, 09:24 PM
are you looking at new or used? Try to look for a used one that may have a few extras thrown into the deal, like batteries etc. Oh yeah, it is worth it saving your money for one.

Rex R
02-19-2008, 09:01 PM
ya know, if I had know about them earlier my 1st boat would prolly have been a 'vac-u-cracker' (from www.vac-u-boat.com ). given todays economy overseas customers could save a good bit of money...$100 usd for a 'complete kit'(you supply radio system, esc & motor(and batteries), adhesive, and paint.

bobswworld
02-20-2008, 05:58 PM
That looks very interesting Rex
was looking for another boat myself and wanted fiberglass and brushless but am getting scared away with price
the wife cannot understand the $$$ for "toys"
have bookmarked that site
thanks

Rex R
02-20-2008, 07:17 PM
you're welcome. for the record my 1st race boat was an electrified ;). I've heard a number of folks commenting on the various 'boats' they offer...nothing but good comments, and the instructions are written with the novice builder in mind! oh some folks might use different hwd etc. do wonder if they'll ever get the gator in production

Ocean Racer
02-20-2008, 11:10 PM
What about a hammer its not brushless but for a about a $140-$150 U.S. u can a battery and charger. :banana:

stahlm004443
02-21-2008, 03:15 AM
whats faster a mini v or a hammer? i know that everyone says that he mini v looks faster because its smaller?

Rex R
02-21-2008, 04:19 AM
iirc, the mini about 10 mph, hammer 13mph, crackerbox 20ish, electrified mid 20's. hth
rex

bobswworld
02-21-2008, 06:00 AM
Yeh the hammer is lots of fun, very stable, I bought an aquajet on ebay for pretty cheap already upgraded, but also had bought a hammer on ebay for like 30 dollars.
But got bored with it cause my aquajet was way faster. But you can upgrade a hammer, here is what I am doing with mine with parts had laying around, maybe it works maybe not but it will be fun trying.

http://www.fileden.com/files/2008/1/26/1722528/700motorinhammer.JPGhttp://www.fileden.com/files/2008/1/26/1722528/dumasoutdrivehammer.JPG
http://www.fileden.com/files/2008/1/26/1722528/flexshafthammer.JPG
I need to do some adjusting, cutting, painting and so on but the drive seems to work fine. Very little binding if any so I must have gotten it close.

DISAR
02-21-2008, 10:29 AM
This is an expensive hobby, and whatever boat you buy after a few runs you want a bigger and faster. If you never had an R/C boat before buy an RTR otherwise you will end up with nothing on the water. The SV27 is a very fast boat but if you cannot afford it try something cheaper from e-bay (cyclone etc...). Then if you find more money start modifying it, change motor,esc,batteries.

stahlm004443
02-21-2008, 11:20 AM
anyone that has the reef racer 2, does the charger and battery come with standard size tamiya connector or a mini tamiya connector?

thanks

matt