Scotts E-thundercat build

[dddmx3]

im pretty sure you got the wiring wrong, its...
i mean if you want volts not amps.. (wiring in series..)



Source; http://www.commonsenserc.com/page.ph...po_wiring.html

[forescott]

im pretty sure you got the wiring wrong, its...
i mean if you want volts not amps.. (wiring in series..)



Source; http://www.commonsenserc.com/page.ph...po_wiring.html

Your diagram is for running 2-lipos in series. I am running 2-4s 3600mah lipos in paralell. Which is 14.8volts and 7200mah.

[dddmx3]

oh ok

[forescott]

Just made a couple of battery trays out of 3/16 plywood and epoxied them to the hull. Had to scratch the "velcro batteries to hull" idea. Steps in hull make it almost impossible to secure the batteries, and had trouble getting the velcro to stick. I made some marks on the trays so I can play with the c.o.g. Just waiting for some silicon tubing from ose, and a couple of octura props! I,m almost there!

[forescott]

Almost done with my first build. Found my battery positioning at 30% from the transom. Unfortunately 30% c.o.g. puts the batteries as far back towards the transom as they can go. Hopefully it runs well there, otherwise I will have to remove a little more of the stock stringers and move the trays back further. Set my strut depth @ even with the hull bottom to start. I have a cf 40 prop I was going to start with but I also have a x642, grim 42x55, and a prather 220. Still wondering what order to try out these props and is the cf40 too small to even bother with? Just waiting to replace the blue skinny water lines with o.s.e. large silicone tubing, and an m445 & m545 from o.s.e. to arrive as well and I will put her in the water!

[crabstick]

looking good! nice Tidy build

[dddmx3]

is that a temp gauge or speed?
whats the model? I might get one too(:

ps what kind of truck is that? take a pic(:

[ozzie-crawl]

Almost done with my first build. Found my battery positioning at 30% from the transom. Unfortunately 30% c.o.g. puts the batteries as far back towards the transom as they can go. Hopefully it runs well there, otherwise I will have to remove a little more of the stock stringers and move the trays back further. Set my strut depth @ even with the hull bottom to start. I have a cf 40 prop I was going to start with but I also have a x642, grim 42x55, and a prather 220. Still wondering what order to try out these props and is the cf40 too small to even bother with? Just waiting to replace the blue skinny water lines with o.s.e. large silicone tubing, and an m445 & m545 from o.s.e. to arrive as well and I will put her in the water!

i would set your strut bottom about 6-8mm up from sponson bottom
use a block of wood etc sit under it to get correct height

[forescott]

is that a temp gauge or speed?
whats the model? I might get one too(:

ps what kind of truck is that? take a pic(:

That is a garmin forerunner gps. I like it because of its size. Small and light! Under 100 bucks on ebay. The truck is the savage flux. Awesome truck. It has the same motor that I put in the tc31, and it runs on 6s lipo.

[forescott]

i would set your strut bottom about 6-8mm up from sponson bottom
use a block of wood etc sit under it to get correct height

Really? I thought you were supposed to start with the strut flush with the bottom of the hull. I think I read that in a couple of other posts.

[ozzie-crawl]

have a read of this http://forums.offshoreelectrics.com/...ad.php?t=12627

[forescott]

have a read of this http://forums.offshoreelectrics.com/...ad.php?t=12627

Wow! Thanks for the link! I stand corrected. I'll give it a shot.

[ozzie-crawl]

when i was setting up my mean machine i was also under they impression that you start with the strut bottom flush with sponson bottom and a few guys were saying centre of prop 3/16 up.
i tried this but could not get it to run very well (prop walk,running wet)
i shot a PM to fluid who told be to stick a block of wood etc 8mm thick under the strut with 1-2 deg of pos prop, sorted it straight away.
with a little fine tuning from there it now runs extremely well
of course different hulls will need different setups but i think its a good place to start, if prop is to low it puts more load on the motor/esc as well

[Rumdog]

Yep, my Sprintcat is setup with the strut at 1/2" above the sponsons.

[Make-a-Wake]

Very nice build!