RE: HK Small Bolt Hydro same as HOTR
I 99% guarantee the leak is the hatch. edit: and what servo are you using?!?! if i turned that fast i'd flip!!!
Posted on: 6/25/2010 1:11 AM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9825591

RE: HK Small Bolt Hydro same as HOTR
for a 1300mAh, you would need at C rating of at least 23.07 (see below) because: 23.07C * 1.3mAh = 30 Amps which is what the ESC for the small bolt is listed as on HK. I have not been able to test this because I don't have an ammeter. <meta charset="utf-8" /> [quote]ORIGINAL: carakter I think the 2.2 is only useable once you upgrade to a hotter motor. [/quote] Nope, I use 2.2 (i assume you mean 2.2Ah (2200mAh)) almost every time I run the boat, they work just fine.
Posted on: 6/17/2010 9:50 AM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9808854

RE: HK Small Bolt Hydro same as HOTR
I have two 1300mAh and I wouldn't recommend them because the rated amp draw isn't high enough on those batteries.
Posted on: 6/17/2010 1:38 AM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9808378

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: Basstronics Just better to bust out the old mount and place a slightly larger and much stronger servo in its place. [/quote] I completely agree. If I can make a suggestion, I would go for a metal geared servo. I got a 929MG corona servo and havn't had any problems with it yet. I had to rip out the old housing, but it is completely worth it in my opinion!
Posted on: 6/12/2010 1:37 PM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9798276

RE: HK Small Bolt Hydro same as HOTR
I just got the pop up sitting on that page and got them for $16.... =)
Posted on: 6/12/2010 12:47 AM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9797534

RE: HK Small Bolt Hydro same as HOTR
Ok, well i've come up with an idea i'm going to try next week sometime. Cover to entire inside of the boat and also the outside. Spray cooking oil (Pam) on the area that contacts the hull. Bead silicon insulation around the hull, enough to seal it with the boat. Then, press the hatch against the boat firmly so the silicon takes the shape of the hull. Let it sit for about 2 to 4 hours so the silicon sets on the hatch. Remove it hoping the cooking spray did its job and let the silicon set overnight to make sure its done. wipe the cooking oil off the boat and the silicone. if all does well, the silicon should get a pretty good seal with the boat. i'll let you know how it goes!
Posted on: 6/6/2010 8:45 PM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9785784

RE: HK Small Bolt Hydro same as HOTR
wouldn't that be more of a permanent solution? I have to take the hatch off every time I change the battery..
Posted on: 6/6/2010 3:42 PM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9785136

RE: HK Small Bolt Hydro same as HOTR
ya, that might work. I have finals until tuesday night so I don't have any time to devote to the boat at the moment... it makes me sad haha maybe a bead of silicon with some swivel locks on the corners might work. The problem, at least for me, it that my hatch isn't uniform along the edges. near the corners, the edges flair up a bit, so the hatch doesn't fit snugly against the boat anyways. Kinda makes me a little made because that is just bad manufacturing, but of well, I'm sure I can do something over the summer
Posted on: 6/5/2010 1:43 PM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9782720

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: tman52806 Don't you guys find it is a pain to keep removing the hatch tape to replace the battery with a fresh pack? [/quote] I couldn't agree more. But for the time being, I can't really think of any solution which would be as waterproof and use less tape. I tried a silicon sealer around the edges of the hatch, but that didn't help the tape problem. For the small bolt, I'm fine with taping it up every time. Ya, its annoying, but I'm ok with it. This summer, I plan on building a boat of my own with my brother. I'm going to make a v-hull using fiberglass and give my best shot at custom modeling! I'm not sure how I will latch the hull, but it will certainly use as less tape as possible.
Posted on: 6/5/2010 1:01 PM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9782658

RE: HK Small Bolt Hydro same as HOTR
This Guide was last edited at 9:01PM PST on June 4, 2010 I bought the Small Bolt from HobbyKing about a month ago and have had quite the learning experience. This is my first RC boat and I have enjoyed every moment tinkering with the Small Bolt. Here is some information I have collected including batteries, servos, props, and more which I have personally tested in the boat. Parts and Replacements Battery Fits? aRT? Turnigy 2200mAh 3S 25C Lipo Pack Yes 8 - 14m Turnigy 3300mAh 3S 30C Lipo Pack No - ZIPPY Flightmax 1300mAh 3S1P 20C Yes - Replacement Servo Fits? Reliable HXT500 5g / .8kg / .10sec Micro Servo Yes, Modified Servo No, worked for 5 runs Corona 929MG Metal Gear Servo 2.2kg/ 12.5g/ 0.10sec Yes, Modified Boat Yes, metal geared servo is perfect Propellors Fits? Comments Octura x432 Yes Amazing, I cannot believe they are not shipping with a 432 by default Turnigy 4mm AquaProp 43x26x9mm No Shaft diameter is too big for stock shaft. Prop is also probably too big for motor Notes Receiver Waterproofing You must waterproof your receiver. I am using an AR500 (Spektrum DSM2) with a balloon and two zip-ties to seal it. See Here Hatch Seal The hatch for my boat is warped and does not seal well to the body of the boat. This is the main reason for me waterproofing the receiver, my boat fills about half full with water every other time I run it. Last time, however, I was able to get a good tight seal on the hatch and ended up with very minimal water inside. Plaining (no, not planing) Using the 2200 mAh 3S 25C Turnigy pack, the boat doesn't plain well starting from a dead stop. Playing with the throttle can usually get it plained out and running smooth. Also, having too much water inside the boat will give you troubles trying to get on plain. When initially launching the boat, I set the throttle a third up and launch the boat with a bit of inital speed. This gets the boat on plain right from the start and makes the experience much more enjoyable. Propellers I purchased an Octura x432 from the OffShoreElectrics website. It is made of Beryllium Copper and is an amazing upgrade from the size 430 propeller that comes stock with the small bolt. Unfortunately you must sharpen and balance the propeller before using it in the water. I also had to work on the area where it locks on to the shaft to get it to fit properly. After about 7 minutes of work, it fits just fine and is sharpened enough for my standards. I took the boat out that afternoon and was amazed by the results. The boat planes out very well and is an amazing upgrade from the stock 430 prop. I honestly can't write in words how amazing the difference is. From HobbyKing, I bought a Turnigy 4mm AquaProp 43x26x9mm to see if it would work with the small bolt as someone had recommended it in a review on the HK website. When I got the prop, I noticed it was way too big for the small bolt. When I put it on the drive shaft, the shaft hole in the propeller was much too large for the boat. I put my Octura x432 back on the boat and threw out the Turnigy prop. I posted a picture below of the three propellers in comparison. They are the stock, Octura x432, and the Turnigy 43x26x9mm. Servos After replacing the stock servo with an HXT500 and having that fail on me as well, I went with a Corona 929MG metal geared servo. After one run with this servo, I am very pleased with the performance. Unfortunately, I had to make some modifications to the stock servo housing. I tore it out completely and used medium CA with accelerator to secure the Corona servo in place. I would highly recommend this modification to anyone looking for good performance and possibly much better reliability. Zippy Flightmax 1300mAh LiPos These batteries are significantly smaller than the 2200mAh Turnigy 3S 25C LiPos I usually use and fit much easier in the boat. I have not been able to test them out yet, but they look like they will do just fine. However, The only problem I have is that they are 20C at 1300mAh which gives a max draw of 26amps (1.3Ah * 20C = 26Amp Draw) and the stock ESC is rated at 30amps for the small bolt. The only issue I can think of right now that might come up is the battery may get a little hot, but that is to be expected and I will have to run the boat slower to compensate for it. I will update this post when I have been able to run these batteries. See these batteries in the pictures below, I have pictures of them inside the boat and also in comparison with the 2200mAh Turnigy LiPos I use. Photos See the ImageShack web album here for the Small Bolt. (Due to the terrible quality of this forum's text editor, I've created a web album on ImageShack which I regularly update, see the link above.) Videos (As I make changes to my boat, I will upload more videos as best I can. I highly recommend watching videos in HD.) [youtube]http://www.youtube.com/watch?v=GlgtN_xHMys[/youtube] Questions (If you have any questions about this boat, I'd be more than happy to answer your questions to the best of my ability. You can either ask them here on the forum or via PM. I hope this information helps!) [quote]ORIGINAL: Basstronics Have you found the source of your leak yet? I think its the water tube inlet! [/quote] I have tested the boat sitting in a bathtub with the hatch off. There was a leak in the water outlet opening, but I sealed that with silicon sealer. The leak I have is in the hatch where I have to tape it. [quote]ORIGINAL: plane-addict Did you guys buy that boat from Hobbyking? I saw some video's from it and it seems a little speed demon to me. [/quote] I bought mine from HobbyKing, yes. But I got the replacement prop from OffShoreElectrics [quote]ORIGINAL: tman52806 So, does the stock servo work okay or not? [/quote] I replaced mine with a Corona MG929 metal geared servo. The biggest problem with the stock servo is that it is not strong enough to overcome the opposing force of the rubber waterproofing hose on the servo arm. The turning was terrible with the stock servo and using hi-rates was way to much stress. I would strongly suggest tearing out the stock servo and using medium CA and accelerator to hold a Corona MG929 in place. The CA holds very well and the servo has enough torque and power to turn the rudder correctly. -
Posted on: 6/5/2010 12:01 AM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9752221

RE: HK Small Bolt Hydro same as HOTR
Haha really? they were claiming they were shipping out within 24hrs but I guess thats not happening! I just got my shipment in. The Turnigy prop that I order to try out for sure doesn't fit so I was bummed about that, but I did get two 1300mAh FlightMax 3S 20C packs. I haven't had a chance to try them out yet, but I'm sure they'll do well! What did you order?
Posted on: 6/4/2010 11:39 PM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9781748

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: tman52806 Could one add some foam up in the sponsons to help with the submarine affect? [/quote] I was thinking about that, but I'm not sure it would help. Foam is way less dense than water, of course. But if you don't increase volume, like add length to the sponsons or something, you won't actually make the boat float any higher above the water. You might be able to stop water from getting into the front of the boat and waying the front down, but then the water will just go to the rear of the boat, possibly making the front lift up a little bit. but the weight will still be there, possibly making the boat sink into the water a little bit. From what I can make out, adding foam to the front won't do a whole lot. The best thing I could think of would be to put a little flap on the front of the boat which directs water more under the boat.
Posted on: 6/2/2010 5:32 PM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9776523

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: carakter Thanks for the quick reply! Now I know it really needs a sponson turn fin. [/quote] you're welcome! and ya, that would probably be a good idea!
Posted on: 5/28/2010 11:51 AM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9765185

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: carakter More questions . . . [:)] 1. So how is she in the straights and corners? 2. Any change in behaviour with different battery placement? 3. Any thermal issues with the motor / esc with bigger props? 4. Any of you tried running side by side with the MiniCat hydros yet for comparison? [/quote] 1. Not too bad but I wouldn't turn too sharp at high speed cuz it will flip for sure. Overall though, it looses a bit of speed but not too bad. Just don't be stupid about it and you won't flip. 2. no idea, i've only run 2200mAh 3S 25C Turnigy. I have some 1300mAh Flightmax coming in though so I'll post those findings. 3. I haven't noticed anything, but I also haven't been checking. I'm running an Octura x432 made of Berylium and it has improved the boat very significantly. 4. nope
Posted on: 5/28/2010 2:23 AM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9764619

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: Pekka L [quote]ORIGINAL: dhoyt7141 [quote]ORIGINAL: carakter Have you guys tried a 4800Kv motor . . . also available from HK? [/quote] I'm still running the stock motor, mainly because I am very pleased and satisfied with how it runs right now. [/quote] Or maybe just try with 4s batteries? 14,8V x 2604kV makes ~38500rpm :-P I used two 1250mAh 2s 30C batteries in series
Posted on: 5/27/2010 3:19 PM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9763271

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: carakter Have you guys tried a 4800Kv motor . . . also available from HK? [/quote] I'm still running the stock motor, mainly because I am very pleased and satisfied with how it runs right now. I haven't greased the shaft yet though and I've had the boat for about a month, sounds like I should probably do that!
Posted on: 5/27/2010 1:04 PM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9763025

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: nick 30 i used corrosion X on the PCB's in the rx and servo, a dab of marine grease on the gears inside the servo, the speedo was already waterproof, i stripped the batts packaging and let them dry out for a week it was all stock apart from the servo, rx and batt, the batt was a 2.2a turnigy 3s and aslo tried a turnigy 3a 2s [/quote] Wow thats a lot of work! My batteries are still stock and my servo is stock from how I got it! Did you notice a difference between 3s and 2s in terms of speed?
Posted on: 5/27/2010 2:55 AM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9762286

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: nick 30 if i get another one, then the motor would be moved back about 10mm-15mm so the batt can be moved back aswell, it was to nose heavy for me everything inside still worked (when it all came back) because it was waterproofed [/quote] Thats good. What did you use for waterproofing? And what battery were you using? Also, was it a stock prop? Thanks!
Posted on: 5/27/2010 2:24 AM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9762253

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: nick 30 i let my eldest son play with mine, he ran it into the wall around the lake, he went in and got it, he got distracted so thats the end of that to much damage for a repair job, the only problem i found was when you just let go of the throttle in an emergency, the boat wants to become a submarine and dive, good thing for hatch tape plus the hatch did'nt fit properly, i also swapped out for a stronger servo [/quote] This is something I've ran into as well. I was playing with mine in my brother's pool and it "submarined" 12ft underwater. a foot or so wouldn't be an issue, but the water pressure at 12ft. under water is extreme for mere hatch tape! I had water fill the entire boat in seconds and it very slowly rose to the surface. The receiver got wet and the boat went crazy! Basically, if you cut the throttle, give the boat time to level out before gunning the throttle!
Posted on: 5/27/2010 2:06 AM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9762231

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: tman52806 So, does the stock servo work okay or not? [/quote] I replaced mine. I would highly recommend against staying with it. I had nothing but trouble with it. Also, when it got wet, it gliched out and when nuts. Its actually ended up stripping itself out. I have a Corona MG929 metal geared servo which is working fantastically, I would highly recommend using one!
Posted on: 5/26/2010 4:58 PM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9761177

RE: HK Small Bolt Hydro same as HOTR
[quote]ORIGINAL: plane-addict Did you guys buy that boat from Hobbyking? I saw some video's from it and it seems a little speed demon to me. [/quote] ya I got mine from HK, its really really fast =)
Posted on: 5/26/2010 3:51 PM by Author "dhoyt7141" in the forum "Speed - Electric"
http://www.rcuniverse.com/forum/fb.asp?m=9761026