New Hobby King Cat (Surge Crusher)

[GP73]

I can imagine, it must be hard to work in there... It's so small!

Anyway, keep up the good work!

Thanks! I'll get some photos of it up soon. I'm just a little frustrated with it at the time being. So when that feeling subsides, I'm sure the wildcat will make itself known again.

[FighterCat57]

yeah it seems like I could fix it well see what supplies cost.
I could also paint the middle of the hull black or something.
or just buy the super surge crusher.

Did you install a brass tube over the teflon drive tube? We're starting to think if the cable starts to flap around it could put undue stress on the motor mount area which could be attributing to the break.

Flex cables shouldn't be run without a hard tubing. They can torque out of shape and vibrate like mad.

[Graeme]

I was running a stock setup except with a 90a Seaking ESC.
running 2x 2cell 5000mah Turnigy hardcase lipo's.
I also run 2x2cell turnigy Life packs.

I picked up a fiberglass patch kit today for $20 I am going to try to fix it.
I will start a new thread showing the process.

[Graeme]

No I have not. I was running the boat in chopy water so I am sure the wave action had alot to do with it.

Did you install a brass tube over the teflon drive tube? We're starting to think if the cable starts to flap around it could put undue stress on the motor mount area which could be attributing to the break.

Flex cables shouldn't be run without a hard tubing. They can torque out of shape and vibrate like mad.

[FighterCat57]

No I have not. I was running the boat in chopy water so I am sure the wave action had alot to do with it.

Yeah, the choppy water definitely has an effect on that area. The cracks look to be in the same place as if the motor was pressed against the hull. In that case, a tail support might help too.

[Graeme]

For those interested
http://forums.offshoreelectrics.com/...d=1#post208510

[GP73]

So I got my Crusher wet tonight...

Holy #$@% that thing was screaming!

Too bad the receiver I had is a piece of crap (FM), as soon as I pushed more than 20 feet away it would start glitching.... Sigh...

Guess what I'll be buying tomorrow...

FighterCat57: I think you might be right about the cable vibrating, I was testing her on the deck and a couple of times the whole strut assembly started vibrating like crazy at WOT, I don't think the prop would cause THAT much vibration even if it was unbalanced, what do you think? Also it would vibrate at any speed, not only at WOT. I'll take a video when I have some time...

I'll re-check the prop balance just in case, it was balanced before...

Graeme: I'll be checking your progress, I'm afraid I'll have to follow your steps soon... :Rolleyes:

Is anyone running the stock ESC? What type of RX/TX are you using? Any problems with interferences? I'm was thinking of getting a spektrum marine receiver, anyone using one of those?

Later,
GP

[FighterCat57]

Yeah, just read up in the thread and add the stuffing tube and liner. That will keep it straight. I also added a small support at the tail of the motor.

[GP73]

Yep, I've read the whole thread but I'm... ahem... sort of "build challenged"

What's HOTR? I couldn't find anything on Google...

Yeah, just read up in the thread and add the stuffing tube and liner. That will keep it straight. I also added a small support at the tail of the motor.

[Doby]

Head of the River= HOTR

[GP73]

Thanks Doby!

BTW, I forgot to mention yesterday: I got some lube coming up but she was completely dry inside.

Mind you I've run her for only 10-15 minutes so that might be the reason....

Also I had the impression that the water pickup was not really working as well as it should, how much water should come out? Should that work at any speed?

The motor/ESC were not hot at all, so I'm guessing it works only a high speed?

Sorry for the stupid questions, I'm sure they have been asked before...

[FighterCat57]

Yeah, the rudder pickup works best at speed. 20+ and you should see a nice flow. I just ran mine this morning and there was a good flow coming out.

[GP73]

Good to know, I was trying to look for water coming out at high speed but that thing was way to fast... :)

I'll be keeping an eye on your Surge "Flusher" project... You're so mean to her... :)

I guess I will have to replace the whole drive shaft/strut assembly like you did, I'm going to wait for that kit you mentioned in the build log, any suggestion for a strut replacement from OSE?

Thanks!

Yeah, the rudder pickup works best at speed. 20+ and you should see a nice flow. I just ran mine this morning and there was a good flow coming out.

[FighterCat57]

Good to know, I was trying to look for water coming out at high speed but that thing was way to fast... :)

I'll be keeping an eye on your Surge "Flusher" project... You're so mean to her... :)

I guess I will have to replace the whole drive shaft/strut assembly like you did, I'm going to wait for that kit you mentioned in the build log, any suggestion for a strut replacement from OSE?

Thanks!

I *think* the Speedmaster sport 20 will work, but don't have one in hand to verify; http://www.offshoreelectrics.com/pro...Sport-20-strut

The stock strut will work with a new brass tube and liner as mentioned previously though.

[hpipro4]

my new setup! still need to do test runs...

turnigy b36-56 2600kv
turnigy 180amp esc
turnigy 2s 7.4v 4000mah 30c
octura x440