Miss Geico Help

[koontek]

Hey guys,

Been Into R/C boating since early 2005 but got out for a long time. I'm trying to educate myself on all the newer power systems and what it takes to get positive results. I pick up a used Miss Geico that needs help. It has a blown ESC and what I believe to be a wrong motor/prop combo. Hoping you guys with experience can help me out and guide me in the right direction. Thanks in advance!

Geico 1.jpg
Geico 2.jpg
Geico 3.jpg
Geico 4.jpg
Geico 5.jpg

[fweasel]

Hard to say for sure, but that appears to be a Castle 1515, which is a 1Y, 2200kV motor. Good on 4S, screaming on 6S. The Turnigy 180A ESC was a good match for the motor, but those deans connectors are terrible and need to be replaced with something with a much higher current rating. Prop appears to be an Octura x series, no idea on size. Take off the lock nut and see if the model is visible on the end of the prop hub.

What batteries do you plan on running? What are your goals for the boat?

[dasboata]

the prop looks like a 645 which is a bit big,, also the water exit should be directly on top of the motor take the prop off and read the # on the hub spray wd40 threw the hose on the rudder till it comes out the water exit to check for leaks in your plumbing the Jacket looks suspect

[koontek]

Hard to say for sure, but that appears to be a Castle 1515, which is a 1Y, 2200kV motor. Good on 4S, screaming on 6S. The Turnigy 180A ESC was a good match for the motor, but those deans connectors are terrible and need to be replaced with something with a much higher current rating. Prop appears to be an Octura x series, no idea on size. Take off the lock nut and see if the model is visible on the end of the prop hub.

What batteries do you plan on running? What are your goals for the boat?

I dug up the original box for the motor and it looks like it is a Neu/Castle 1518-1Y-1800 KV P/N:" 15181Y-1800CM. Is 1800 KV a little low on the RPM ?

As for the ESC, the one installed in the boat right now is blown. I do however have 2 brand new Turnigy 180 A ESC's and one Castle Hydra 240 laying around. I'm thinking the Hydra might be a little overkill?

The Prop is an Octura X648. It looks pretty huge for this boat, maybe the previous owner thought it might be a good combo with the lower kv motor?

The only matching battery's I have laying around are some 2s packs and 3s packs. Both are pretty old so I'm open to investing in some nice batteries for this setup. Ideally my goal is to reach the highest possible MPH while trying to balance out reliability and stability. Any help in the right direction would be really much appreciated! Octura X648.jpgCastle 1518-1Y-1800kv.jpgCastle Hydra.jpg

[koontek]

the prop looks like a 645 which is a bit big,, also the water exit should be directly on top of the motor take the prop off and read the # on the hub spray wd40 threw the hose on the rudder till it comes out the water exit to check for leaks in your plumbing the Jacket looks suspect

Pulled off the prop and it was an X648 and I do agree it looks a little big!

You are recommending to rotate the water jacket so the water exit on the jacket is vertical? May I ask why you recommend doing this?

I dug out my prop collection and let me know if you guys think one of these props would work better.

Octura: X631, X438, X442, X437/3, X447, X447R
Grim Racer: 40x52/3, 36X55,38X55, 44X66
Graupner: K45, K51







Octura Props.jpg

[martin]

You rotate the water jacket to have the water exit at the top ( 12 o clock position ), to ensure maximum fill of water inside the jacket. Where you have the water exit the jacket dosn't fill 100% to the top before it exits.

[fweasel]

1800kV will be better suited for 6S, two 3S packs in series. I would use the 180A Turnigy ESC. The Castle is overkill, and I would save it for another build. My V3 Blackjack (very similar hull) ran really fast on a 2000kV motor, 6S, and a 440/3 prop, albeit a little hot. You can start with the Graupner K45 to get the boat dialed in and if it's been sharpened and balanced, step up to the Octura x447 for more speed. If the 447 is raw, I would not run it.

[koontek]

You rotate the water jacket to have the water exit at the top ( 12 o clock position ), to ensure maximum fill of water inside the jacket. Where you have the water exit the jacket dosn't fill 100% to the top before it exits.

Makes perfect logic, thanks for clarifying that up.

[koontek]

1800kV will be better suited for 6S, two 3S packs in series. I would use the 180A Turnigy ESC. The Castle is overkill, and I would save it for another build. My V3 Blackjack (very similar hull) ran really fast on a 2000kV motor, 6S, and a 440/3 prop, albeit a little hot. You can start with the Graupner K45 to get the boat dialed in and if it's been sharpened and balanced, step up to the Octura x447 for more speed. If the 447 is raw, I would not run it.

I believe last time this boat was ran was on 4S with unimpressive results. I will wire in one of the new Turnigy 180A tonight and go over everything before taking her out again. Can you tell me what version hull this is ? And what the differences are ? What kind of speeds did you get on your V3 Blackjack ? The Graupner K45 is a composite prop which i believe you cannot sharpened and balanced correct? One last questions is there somebody offering sharpening and balancing services for props that you know of ? Thanks again for your help!

[fweasel]

That is the original 29" Miss Geico, V1. You can tell by round hatch opening and the wooden trays inside. V2 had composite trays, same round hatch. V3 had a square hatch opening, a much stronger hull layup, and better electronics.

4S on those boats was never all that much fun, but I started there myself. When you wire in the ESC, be sure to calibrate it to match your transmitter throttle. Set timing for 11-15*, and make sure it spins the prop counter clockwise or you'll have to swap two motor wires to change the direction.

Dasboata, Chris Hoffmann, does prop work. He replied to this thread once already. PM him. Yes, those Graupner composite props are shaprened and ready to go. They perform well, but can be fragile. The Octura props can really tear up your driveline bushings if they're run raw because of imbalance. I suggest not using them based on my experience.

[dasboata]

I believe last time this boat was ran was on 4S with unimpressive results. I will wire in one of the new Turnigy 180A tonight and go over everything before taking her out again. Can you tell me what version hull this is ? And what the differences are ? What kind of speeds did you get on your V3 Blackjack ? The Graupner K45 is a composite prop which i believe you cannot sharpened and balanced correct? One last questions is there somebody offering sharpening and balancing services for props that you know of ? Thanks again for your help!

hi wana sell the Castle Hydro ?

[rearwheelin]

I would gut that boat and re do all of it . To me it looks like one bad flip over and it everything comes apart.

[koontek]

hi wana sell the Castle Hydro ?

Hey Dasboata,

Thanks for reaching out, I will send you a PM

[koontek]

I would gut that boat and re do all of it . To me it looks like one bad flip over and it everything comes apart.

I guess compared to the V3, this one is not as reinforce. How would you redo everything? Just gut it out and reinforce the hull?

[fweasel]

I've not had my hands on an original 29" Miss Geico, but I have had an original 29" Mystic, which was the same boat I believe. It was paper thin and would not last long running at 6S speeds in stock form. At the very least, it would require a full interior inlay, or partial inlay plus structural two part foam.