HK Small Bolt Hydro same as HOTR
No it wont wiggle or vibrate. Its supported well at both ends and with the slight bend in the drive line it will eliminate and flexing.
Its a true upgrade for these boats.
If you can start testing from the stock setup . . . that would be great!
I will probably take the motor/esc to use in the little HK Cobra boat Im planning to build. Upgrading one boat = good excuse to build another... lol
Quote: I had run the stock boat, 3S 1800 mah Flightmax batts. Its OK but I think its to slow... Maybe 18-20 MPH.
I have a 3s 1800 batt. too. I have not ran the boat yet as I'm waiting on a controller, but is that all
I can expect is 20 mph. I though this boat ran about 40 mph.
The drive line on this boat is the culprit. That huge 1/8" flex shaft is way overkill. Its to big, to bulky, to restrictive.
I bet with just the drive line mod I will add 5 mph+
Take the motor out and turn the drive line over by hand. You will feel how restrictive it truly is then.
The weather just cleared up here now (it was raining so hard, Icould've almost run it in the parking lot earlier!), so hopefully I get a couple runs in tonight after work. Mine is almost stock, x432 prop (well the OSE32mm plastic one, but it looks JUST like an x432), scuffed/trued ride surfaces, and Itrimmed the stuffing tube a bit to get the strut at a better angle. Out of the box it was about 1/2"too low, and had about 2-3*of positive angle. Now the hull sits level on a table when resting on the bottom of the strut, and it has almost no angle (might need some negative, we'll see after the test run).
I'm going to make some better ride pads for the sponsons as well, there's a good 1-2*of anhedral on the ride surfaces, which can't be good for anything. At the very least I'll flatten them out, or maybe add a very slight amount of dihedral.
If I started the hull work you proposed, I would probably have mine sitting on the shelf for a loooong time!
Anyone? Im sure there is a general rule of setup for Hydro's.
(quoted from detox, this procedure is summarized for the Aquacraft Miss Vegas but it should generally be the same)
This procedure details how you change the angle of attack - AOA.
" Here ya go:
With the Miss Vegas resting on setup board make sure strut is adjusted so that tub is level with set up board (rest boat on strut bottom and rear of sponsons). Then take a piece of 1/16" ply and slide it back under the front of sponson until it touches the ride surface. Measure the distance from where the 1/16" Ply Touches Front of Sponson to the Trailing Edge of the sponson. Using this method my UL-1 measures 1" from where the ply touches to the trailing edge of sponson.. On the Miss Vegas I would shoot for 1.375" measured distance.
Increasing the AOA by adding material to sponsons will also raise ride height at sponsons, so readjust by raising strut so that tub is level before taking new measurment.
You will probably have to add 1/8" to 1/4" balsa wood on sponson bottoms to achieve this angle. I glued on balsa wood using Devcon 2 ton epoxy then block sanded using course 80grit sandpaper wrapped around wood block (MDF board).
Warning: Adding too much AOA will cause the Hydro to run TOO LOOSE."
Rigger pictures courtesy of detox . . .
[img]{akamaiimageforum}/upfiles/416734/Lj21964.jpg[/img]
[img]{akamaiimageforum}/upfiles/416734/Ez81989.jpg[/img]
Im not sure on proper strut adjustment/setting so I will be needing that advice when I reassemble mine.
Anyone? Im sure there is a general rule of setup for Hydro's.
Out of both runs, about 5.5-6 minutes each, I only put about 800mah back into the 2200mah packs. I can likely get 10 minutes of running out of this easily, and even with a 32mm prop everything was stone cold inside. I might still go with an x632, or maybe even an x435 depending how it runs once I get the strut height/angle better.
I silicone sealed all the various parts and still had water. I think its coming up the stuffing tube. Since I now have a wire drive I will be removing the teflon and adding heat shrink around this connection point.
I need a small cap or something at the tip of the stuffing tube to keep water out of the hull.
Thanks for this input. I have concluded this boat should be called Mico bolt. BTW, the place you run your boats on is very beautiful.
Local ponds the water is muddy around here. Plus shallow with weeds.
The death leak seems to be a very common issue with this boat.
I silicone sealed all the various parts and still had water. I think its coming up the stuffing tube. Since I now have a wire drive I will be removing the teflon and adding heat shrink around this connection point.
I need a small cap or something at the tip of the stuffing tube to keep water out of the hull.
1/8" Prop shaft, 1/16" .0625" wire.
Its a little expensive to do considering (About $30+ shipping) the MSRP on the boat is $110, but its a worthy investment.
I ordered two Octura props for the Bolt from them on Sept. 2.
Paid via Paypal. They did not even bother to ship my items.
Had to open a paypal dispute. Got my refund just today - Oct. 1.
Now I have to source for new props.
Shipping from OSE is just too expensive getting them here - $17.40 (shipping cost alone)
If you know of any store where I can get cheaper shipping, do let me know.
Guess my Bolt will just have to wait some more.[]
Nice site. Although the props they have are made of copper. Octura's are Copper, Berrylium & Titanium -hence the $2 price difference.
I already emailed Chris (Fine Design RC). I hope he can give me a good quote on the shipping.
I am still looking for where MiniCat sources their SS props for the Hydro.
Can't seem to find it. I do know it's from Tenshock.
Have you guys seen this video?
www.metacafe.com/watch/2505425/outrunner_bldc/
Wire drive and couple from Jeff.
1/8" Prop shaft, 1/16" .0625" wire.
Its a little expensive to do considering (About $30+ shipping) the MSRP on the boat is $110, but its a worthy investment.
Here is the measurements for the wire drive I have:
.125" prop shaft x 1.69" lg.
.062" wire
Length overall is 8"- cut to fit
Instead of solder use Loctite. I guess thats what Jeff uses. If he is using it and its holding up, then it will work for you as well. Should work well since the MR flex is .047"
However I did get water in the hull like most of you, it's a good thing
I put the sponges in there. Only ran one batt. since I did nothing to
waterproof the receiver. I am thinking of going the corrosion x
route, but a ballon would be much cheaper and I'm all for cheap.
IMO I think this baby should be run on 4S power.
4s = 14.8V x 2604 = 38,592 RPM. That is the sweet spot for these Ive read.
3x = 11.1 x 2604 = 28,904 RPM- to slow.
I got some 2S batts laying around. Going to see if I can fit 1200 2S x 2 packs in there or not... hmmmm....
Now will the ESC handle the abuse? If not I would rather take it out and just use it in another boat instead of wasting it...
the stock esc won't handle 4s so you have to replace it before you burn it and that will cause the motor to burn too.
I have 2x 2s 1200mah batts, 2x 1000mah batts and have two Turnigy nano tech batts (2x 2s too) in order.
I even had the boat flip on me (upside down for a few maybe 15mins.) and still no water inside.
So has anyone actually taken GPS readouts? I wish I had a radar gun . . .or a Eagle Tree . . .
@nickster - that Force Control esc has been taken off listing.
I did shoot him an email and he said he still has stock left.
I asked him to repost so I could order. Still waiting for the re-listing though.