I have a Hitec 6V 270mah 4cell pack. My Kingcraft wouldn't pass the radio check with the engine idling. My radio check is standard, I believe. I take 25 paces from my boat with the transmitter antenna down. All functions should work at that distance as if the antenna was up. Had the same problems with my .90Hydro, .21 mono, and Pacer airboat. With the 6V 800mah mugen seki 5 cell that I use in my Kingcraft I can run all day with no problems. I think that there are easier ways to lose weight than gamble on batteries. They Sanyo 2 cell isn't much lighter than the 4QB anyway. Sorry that I don't have any weights for you to compare. Couldn't find any on the URL, that you gave or the Futaba URL for the 4QB.
RUNNERX! Don't want to sound like an old fart, but I am really worried about radio response. Not only that, but also leaky radio boxes and the sort. Any questions about safety while running RC is not acceptable to me. Here in Japan, we have to have a license to do RC, and I pay insurance with 1,000,000 dollars coverage that is mandatory. You have to prove that you are covered when you get your license renewed every two years. If you have an accident, they will cover you , but never again, so your racing days are over. I also don't want to mess up a rigger that I have spent several hours building over a few grams. It is probably a personal thing with me, but I am very careful when I run my boats. I never run if there are people in or near the water, I always do radio checks several times an outing, I go home if I even find one drop of moisture in my radio box, which is very seldom. Our club is very strict about frequency management. I don't run when there are beginners running. I never crack open a beer until I'm done with my after run maintainance.
I spend more time on preventive maintainance than I do running.
Do you get my character. Probably a little over board, and excessively worried, but for me it works.
By the way, I want to take the Hammerhead .12 out and work the bugs out of it first. I think it will do okay, as it is. I'm terrible at CAD, and almost as bad at Microsoft Paint. If some one out there wants to do them up in CAD mail me your address, and I will send you a copy of the plans by snail mail. I have to get them into inches, for they are in millimeters now. Will millimeters be okay?. Tom will you post them in your plans file, if someone so kindly accepts my offer.
Thanks all you guys for the inputs (RUNNERX and WSWATZELL)
Tom! How about some receiver battery opinions?
Don! I have everything now. I even got some special 30% nitro boat fuel for small engines made up for me. Also had a more user friendly shaft joint made for me. Lots lighter, smaller, tougher than that antique Octura with the narrow butt nut that hid itself underneath the flywheel rim, so I couldn't tighten it.
Hammer
