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heliblog

RC Helicopter flying, RC Cars and RC boating

Made for other people and me to track what I am doing when with my remote controlled units. It started out with helicopters. Hence the name.

If only one of my units is of interest, this unit can be clicked on the right and only posts regarding that unit shows up.

This blog is open for comments so feel free to leave a comment.

How to modify the Sea Wolf for static diving

Robbe Sea Wolf V2 Posted on Jul 19, 2008 20:41:43

I have found a few threads on RCGroups.com on how to modify a Robbe Sea Wolf into a static diver. It doesn’t seem to be very complicated though some parts are needed.
These are the threads: http://www.rcgroups.com/forums/showthread.php?t=357092 and http://www.rcgroups.com/forums/showthread.php?t=302419.

There are two ideas but the one I prefer is the one with the water pump and the water bag. One thing is to find room for these extra components. For that reason the battery can be replaced. I would like to use Sanyo batteries. Form my experience with my Mini-Z Sanyo produces high quality cells. I first thought C cells was the way to go. Then I discovered the AA batteries comes in 2700mAh capacity whereas C cells doesn’t come in much larger capacity. This means I will get most mAh from using AA cells.

I have measured I can have 20 AA cells in about half the space the lead cells take up. 20 AA cells makes it possible to make a 5s4p battery with 6V 10800mAh. That is the double capacity in half the space smiley

At the same time it will free up room for the water bag.

Then I will need a pump at 6V and a way to control it. Robbe produces a suitable one. They discuss a switch but a reversible ESC should solve the same problem as well. That would also allow for very precise bouyance control.

Then I would also need some tubes, a water bag, a vault and a water filter. These should all be aquarium and medical accessories.

A final thing that I believe is a must for a static diver is a failsafe that will empty the water bag if the signal is lost. That should bring the sub to the surface.

This mod got me wishing for a more advanced transmitter having more channels, so I can control more stuff in the sub smiley This mod hopefully takes my mind away from that nice Engel Akula RC Sub I have been looking so much at lately



Ford GT H-bar broken

Kyosho Mini-Z Ford GT Posted on Jul 19, 2008 10:56:31

Yesterday while I was racing the Ford, I went over a small obstacle and suddenly the Ford drove very strange. I inspected it and found that the H-bar was broken. Luckily I had a set of extra PN-Racing H-bars lying around, that I hadn’t tried out yet.

So I selected the softest one and put that in place of the broken one. I think the Ford got even better grip with the rear tires with this H-bar so I would call this an improvement. The reason why I selected the soft one was exactly to get better grip on the rear tires.

This was the first vital part to break on my Mini-Z. It has taken some abuse by now so I think this is OK. I didn’t expect this to break though. Hopefully the new one will last longer. At least it is made of Carbon Fiber. The first CF part on my Mini-Z smiley