Cat Build(Here kitty kitty kitty)

[Eodman]

Thanks Darin, what part # does OSE use for this prop? From the pictures online it hard to tell which one you're talking about.

[Eodman]

Steve suggested wrapping the shaft with a piece of electrical tape to make up the size difference --- I think either one of these solutions would work!

[Darin Jordan]

Here are the two I ordered on Friday:

31mm Standard Rotation:
Product ID: grp-2318.31
Graupner 31mm for 4mm threaded shafts

31mm Reverse Rotation:
Product ID: grp-2318.31L
Graupner 31mm L for 4mm threaded shafts


36mm Standard Rotation:
Product ID: grp-2318.36
Graupner 36mm for 4mm threaded shafts

36mm Reverse Rotation:
Product ID: grp-2318.36L
Graupner 36mm L for 4mm threaded shafts

[SJFE]

That thing just looks plain kewl man. I wouldent even care if it didnt even get out of it's own way. It would still be the boat I ran the most all day.

[Eodman]

Thanks SJ, now that I know what I did wrong hope it goes well this weekend!

[Darin Jordan]

You might try just runing it WITHOUT counter-rotating the props for awhile... See what it does and get everything else sorted out... Then you can focus your efforts on enhancing it once you know the basics are sorted out...

I'm interested to hear/see how fast it's able to go... I think those stock motors are 27-turns... If that'll actually propel that hull, my 22" V-Hull on a pair of 19-turns ought to really be a kick...

[Eodman]

Yeah they are 27 turn motors according to Aquacraft any standard 550 motor will fit in the housing! What esc are you using?

Darin that 22 inch hull should fly!!!!!

[Darin Jordan]

Yeah they are 27 turn motors according to Aquacraft any standard 550 motor will fit in the housing! What esc are you using?

Any brushless with a 1/8" shaft will also fit... SCAREY!!

I'll be using a single RC-Hydros ESC V90/614 Opto Isolated Victory... I talked to Andy and he gave me all the details on making this work for 14.8V on anything down to a pair of 11-turns...

[Eodman]

Well I quickly tried the cat as suggested by Darin and I have forward momentum!

We had alot of rain and our pool cover has and it has alot of water on it so I had a ready made test spot!

No way to tell speed but it did get up on plane before I had to shut it down!

[RCprince]

This is my SV 27 Outboard I first ran it with a 3mm shaft feigao 9l (2731 kv)at the time i did have a Garmin but it flew on 4s's then I tried a a cheap 3300kv mtr...pointless...it needed wings But I kept blowing ESC's....after my BJ-BL crashed Saturday I exchanged the system and I got my SV27 to run 38mph somewhat stable with a 645....But I replaced gears after every 20something runs..steve probably wanna know who is this nutcase who keeps buying EP1 gears, I just think it looks cools thats like a 1 dollar plus a run, not bad.

[RCprince]

By the way thats an octura 4mm to 3/16th shaft i have in there, fits great just need to open up the plastic piece in the back to accommodate the 3/16th part of the shaft.

[Eodman]

OK just had the Cat out at lunch time(at a drainage pond) for a quick test --- it runs however just as I kick it it jumps up then planes momentarily starts cavitating and drops off plane!

I have to lower the units on the brackets and see if that helps! The brackets allow for about an quarter inch of movement up & down. I have them at the upper limit so time for more adjustment!

But it moves and turns for me .... not fast but............ we're moving!

[Eodman]

OK I move thew motors all the way down on the mounts and its a little better! the Cat planes but still a little cavitation(tested on way home) so when I got home I made some modifications to the mount plates so I was able to gain another eighth of an inch!

If I have to I can get another eight by working on the plates alittle more But thats it!

[Darin Jordan]

Which props are you using???

[Eodman]

Darin - I'm still using the stock plastic ones! Haven't ordered the replacements yet ... My sons' birthday, then out to dinner not to mention the having a terrible week at work!

I manage a storage facililty, and we had Hazmat people, DEP people, EPA people from the County & National level here because of some chemicals found on the property!

So I haven't had time but I hope to figure out the props later today & get them ordered! But hey It's a work in progress and the Cat moves forward!

Oh and my wife just got promoted up to a director at Johnson & Johnson so I'm going to have to take her out to dinner to celebrate!(Can we all say another boat project)!!!!!!!!!!!