Bill Worsley

I have flown R/C Helicopters, Raptor 30,50,60, for a few years and would like to have a go at gliding. I have been given an ST Models ASW28, a 2M foam model, and have built a BOT 5 foot span, not covered yet. I have been told the ASW28 is not really a beginners model as it could be too fast. Could anyone suggest a suitable powered glider for a beginner? Thanks Bill W.

Hi All, Once again, I have come across something I am not happy with in the ASW 28 I have recently purchased. This time it is the control surfaces and their operation. The Ailerons, Elevator and the Rudder, when disconnected from the servos and their control wires, are very stiff. The hinging mechanism is the same on them all, and seems to be no more the part of the control surface being moulded thinner than the rest, to create a type of hinge. An example of this is when I connect the Elevator to the servo and operate it. Before either the servo or the elevator reaches full travel, the servo starts to buzz and the whole Tailplane starts to move. When the Tailplane is disconnected, it is evident, by manual operation, that the control surface is a lot stiffer at the hinge point, than I would have expected. The two solutions I have thought of trying are :- 1/ As the hinges are full length, I thought that if I removed part of it, leaving say 4 x 1/2" sections to act as hinges?? 2/ Remove the existing "hinge" and replace it with something more suitable. Any suggestions as to the type and size would be appreciated. If anyone has any other ideas as to how I can achieve this, I would be grateful for your input. Thanks Bill W

Hi All, Just got down to trying to sort out the radio gear. What I have found so far are that both the elevator and rudder servos are a bit noisy. Also, despite the ATV's being set to 100%, there doesn't seem to be a lot of throw on either control surface. Another thing I have noticed is with the ailerons, when operated the inboard ends move about 1/4", either way, from their central position, whereas the outer ends only move an 1/8". This appears to be caused be the hinged part of the ailerons being not as free as they should?? Is this easy to correct? As I suspect the rudder and elevators may be similarly afflicted??? Thanks Bill W.

A couple of questions. Whilst the 1050 kv motor is OK. With the folding prop being a screw-on type, held firmly by a nut at the back and front of the prop, there doesn't seem much scope for changing the prop at any stage. With that in mind, how easy is it to change the motor to a type that I can use to select a prop to suit my needs. It seems even the motor and mount are glued in. Is the necessary surgery easy enough to do? Any recommendation on a suitable motor. It would seem that the ARTF version used a 2.4 Ghz receiver. Would it be feasible to use a 35Mhz Rx? What typical voltage do you get out of the ESC to power the Rx? Thanks Bill W.

Hi Pete, The link you mentioned should be copied and put as a sticky on all RC sites. Having read most of it , it is quite revealing. ie one company making a range of motors in China and then sells them to various distributors who then re-brand them. The staggering thing is that there can be about £100 difference between the top price a retailer charges and the lowest price. Although this was written 2 years ago it is probably still relevant . Bill W.

David, Thanks for the info. The link to the Gibbs Books, the power systems one you mention, seems to be ideal. Bill W.

I am new to electric flight and was wondering if anyone had produced any tables that showed, weight of aircraft - appropriate sized Motor (Kv) - ESC - Battery - Prop The way I see it is that the weight of the plane/glider would determine the power the motor needs to move that weight. The prop would determine the max current draw, and hence the ESC amperage. I have an ASW 28 Glider, weighing 475 grams, with a 1050Kv motor, a 20A ESC and a 10 x 6 folding prop. There is no 2 cell 1000mah LiPo with it, but they weigh about 65g. All up weight = 540grams. The previous owner said the climb to "operating" height was a bit pedestrian and I want to improve this. I have, and would like to use, a 3 cell LiPo, but have been told that the extra voltage/current draw  could burn out the motor and esc. If there was a table around I would be able to look at that and choose a motor/ esc/prop combo to suit my 3 cell 11.1 LiPo's Does such a table exist? Bill W.     Edited By Bill Worsley on 19/03/2014 08:44:57 Edited By Bill Worsley on 19/03/2014 08:47:03

Looking at the space for the LiPo in the ASW28, there isn't a lot of room. I can't find any indication from the manual as to the physical dimensions of the battery. Looking on the internet it seems they come in all shapes and sizes. Can anyone recommend a battery that they are successfully using in their ASW 28. Thanks Bill W.

Sounds like a plan. As you say they are cheap enough. Thanks Bill W

Just had a quick look and the motor is a small bell motor and is an outrunner...Bill W.

The ASW 28 is an ST Model( www.sheng-teng.com) The manual says it has a brushless motor, no more details. Any ideas on what Kv it would be? The battery required is a 2-cell 1,000 Mah 7.4v LiPo. All my LiPo's are 3 cell 11.1V. Would they be OK?. Would it be better to get another motor and use the 3-cell LiPo's ? With that in mind what would be a suitable motor? I am assuming the original is an Inrunner. I hope someone has been down this route before. The original owner says the climb rate with the original motor and 2-cell Lipo is quite pedestrian. Thanks, Bill W

It is a model glider!!!!!!!! Manufacturer could be either ST Models or I think FMS?? Bill W

I have been offered an ASW 28 electric glider, in need of some TLC. Are there any places where spares are available?? Thanks Bill W

Hi Martin, Thanks for the e-mail attachments, they are perfect, even when blown up full size. They will be a good start for my BOT build in the future. They are far better than the others I have tried to download. Thanks Bill W.

Hi Martin, Thanks for the offer. PM sent with e-mail address. Cheers Bill W.