41
For Sale / Re: ASW17 fully molded
« Last post by rogallo on September 05, 2024, 18:27:36 PM »Fred, sent you a pm
Ralph
Ralph
Recent Posts
42
The French Corner / Caltrage
« Last post by kjblootens on September 05, 2024, 11:16:06 AM »Been thinking about this subject a bit lately, and found that discussion you mentioned on Mount Leinster, Fred
https://www.modelisme.com/forum/threads/caltrage-le-retour.155740/
https://www.modelisme.com/forum/threads/caltrage-le-retour.155740/
43
Electrics / Re: Skywing Edge 540 91': electric is better!
« Last post by sandrocacciola@gmail.com on September 03, 2024, 17:36:42 PM »August is over and we are back from vacation. I had interrupted my review talking about the firmware upgrade of the ZTW Esc to optimize it at its best with the Dualsky DA6000 engine. And from here I resume talking today about the choice of batteries that are the "fuel" of the electric engine. Today I want to focus on another fundamental aspect for the setup of a maxi model converted with an electric engine: the batteries. The choice of power supply can be subjective with regard to how many cells to use, their amperage or the brand but there is one thing that cannot be compromised, that is the quality of the battery chemistry. Unfortunately I also fell into youthful (and inexperienced) mistakes with the first electric models (both propeller and fan) but all this helped me understand that saving on this aspect is not always a good choice. Obviously the truth is always in the middle because if it is true that batteries of brands that have long been known and appreciated by even professional modelers sometimes the cost does not justify the advantages; as it is also true that low-cost batteries are often poor in terms of performance (especially if subjected to stress such as in electric fans).
And since I like to experiment (I have tried so many batteries) I took advantage of the purchase of the Dualsky GA6000 motor to also try the LiPo Dualsky G7 HED series, where HED stands for High Energy Density. The 6S 5800Mah packs measure 158x45x51mm for a weight of 774 grams.
These cells, according to the data provided by Dualsky, thanks to continuous updates (they are now in their 7th generation) manage to be not only high-performance but also lighter and more powerful (in fact they weigh about 50 grams less than other similar packs). They have a continuous discharge capacity of 45C with high dynamic performance that guarantees over 300 charge/discharge cycles without evident loss of capacity. Interesting that Dualsky worked with Xpower to be able to obtain the advantage of having an optimized discharge voltage in the low capacity phase which translates into Greater Power even with reduced capacity residues; it is in fact known that often in LiPos there are drops in Power with the decrease in battery amperages.
The Dualsky G7 HED LiPos arrive with the pre-soldered XT60 blue plug, but this could be irrelevant for those who use other types of plugs. Finally, in terms of quality, Dualsky batteries are scrupulously inspected before shipping to the Shanghai factory.
However, given the not excessive absorption of the motor which with the 24x10 propeller should require 100% Power of about 100 amps, these batteries should not be stressed. But I would not go below 5500 mha of capacity for any battery you decide to use.
And since I like to experiment (I have tried so many batteries) I took advantage of the purchase of the Dualsky GA6000 motor to also try the LiPo Dualsky G7 HED series, where HED stands for High Energy Density. The 6S 5800Mah packs measure 158x45x51mm for a weight of 774 grams.
These cells, according to the data provided by Dualsky, thanks to continuous updates (they are now in their 7th generation) manage to be not only high-performance but also lighter and more powerful (in fact they weigh about 50 grams less than other similar packs). They have a continuous discharge capacity of 45C with high dynamic performance that guarantees over 300 charge/discharge cycles without evident loss of capacity. Interesting that Dualsky worked with Xpower to be able to obtain the advantage of having an optimized discharge voltage in the low capacity phase which translates into Greater Power even with reduced capacity residues; it is in fact known that often in LiPos there are drops in Power with the decrease in battery amperages.
The Dualsky G7 HED LiPos arrive with the pre-soldered XT60 blue plug, but this could be irrelevant for those who use other types of plugs. Finally, in terms of quality, Dualsky batteries are scrupulously inspected before shipping to the Shanghai factory.
However, given the not excessive absorption of the motor which with the 24x10 propeller should require 100% Power of about 100 amps, these batteries should not be stressed. But I would not go below 5500 mha of capacity for any battery you decide to use.
44
Slope Soaring / Re: ISR dates 2024 UPDATED!!
« Last post by gerryb on September 03, 2024, 12:25:46 PM »Hi all,
Just a reminder, our 2nd Great Glider Guider’s Gathering of 2024 will take place next Saturday, 7th September on Tountinna. Flying all day, all glider types welcome.
MACI sponsored sammiches will be available to all attendees.
Please note, as the wind forecast is NE, it is recommended to have electric powered models with you, just in case the lift isn’t working for us.
GB
Just a reminder, our 2nd Great Glider Guider’s Gathering of 2024 will take place next Saturday, 7th September on Tountinna. Flying all day, all glider types welcome.
MACI sponsored sammiches will be available to all attendees.
Please note, as the wind forecast is NE, it is recommended to have electric powered models with you, just in case the lift isn’t working for us.
GB
45
Hi just a small bit of news here, I got to maiden my new ASW 15 last night. It has a FES unit which allows me to launch from a flat field with out a towplane.
Thrilled to bits with it. Here are a few pictures.
The model was built in France by a Mr Jean Claude Malandain
Thrilled to bits with it. Here are a few pictures.
The model was built in France by a Mr Jean Claude Malandain
46
Slope Soaring / Re: Tountinna Gazette
« Last post by gerryb on August 28, 2024, 18:55:21 PM »Hopefully, we’ll be staying out of the ‘weeds’ 
!!
Meant to say ‘weeks to come’
!!Meant to say ‘weeks to come’
47
Slope Soaring / Re: Tountinna Gazette
« Last post by gerryb on August 28, 2024, 18:32:26 PM »Thanks Bill.
Yea, lots of building and slope flying all summer down our way.
Not finished yet either, still looking forward to some autumn flying in the weed to come.
Yea, lots of building and slope flying all summer down our way.
Not finished yet either, still looking forward to some autumn flying in the weed to come.
48
Slope Soaring / Re: Tountinna Gazette
« Last post by billscottni on August 28, 2024, 16:55:17 PM »Very nice Ger. Good to see there's some building still going on. I don't think I'll make the 7th Sept but hope you have a good day
49
Slope Soaring / Re: Tountinna Gazette
« Last post by gerryb on August 27, 2024, 22:27:56 PM »Hi all, a little update on new models on Tountinna. 3 of the 4 have been built, finished and flown successfully. They are a real pleasure to fly, and are now some of our first choice models to bring to TT.
Some photos to follow, hopefully they will appear.
Also included, a trio of Slingsbys. L to R… T21, T42, T30
Just a reminder, we plan to hold our second Glider Guider Gathering on TT on Saturday 7th September. All GG’s are welcome to attend. Looking forward to seeing you on the hill.
Regards, Gerry B.
Some photos to follow, hopefully they will appear.
Also included, a trio of Slingsbys. L to R… T21, T42, T30
Just a reminder, we plan to hold our second Glider Guider Gathering on TT on Saturday 7th September. All GG’s are welcome to attend. Looking forward to seeing you on the hill.
Regards, Gerry B.
50
Slope Soaring / Re: Build an Alpina 4001
« Last post by Fred on August 25, 2024, 22:14:17 PM »Here are a couple from my old Alpina. Hope that helps.