Jump to content

chris foss centiphase


Recommended Posts

26 minutes ago, Ron Gray said:

Mike, take a look at Hyperflight

That's a very interesting site Ron and thanks - I'm looking at it now.  The problem I have is that - not knowing or understanding anything much about electric flight and about what the data specs mean - I don't know which motor would be right for launching a 100" span glider 1.3kg (2lbs 13oz) in weight at something like a safe climb rate (it doesn't need to be rocket like but it does need to allow for getting clear of low level turbulence before the plane is too far upfield). With a model shop (and I really like to support a model shop where possible as they can both guide a newbie like me plus within reason might provide a better 'returns' experience - I recently bought a motor that was missing two screws and they sorted that without a lot of posting etc).  Hyperflight is better in that they are e-flight specialists, but if buying from them I'd need to be making the right choice without the guidance of a shop (though maybe you and others on here can  steer me right).  Another thing I notice (both on Hyperflight and at other shops) is just how many of the options are out of stock!

 

One really useful thing that Hyperflight has flagged up to me is that there are motors designed to cope with the slim nose of a glider needing to be converted to electric. So this one, for example (and assuming its power spec is suitable when running on a 3S) looks like it might be a candidate, because I think a motor diameter of 27mm could be right for the space in the Centiphase nose. Then I would have to find out what folding prop and blades I need to match it to me model weight/span, what ESC to get etc. 

 

If you have any thoughts on any of this I'm all ears! And thanks++ again

Edited by Mike O'Neill
Link to comment
Share on other sites

There is a new competition class in the BMFA silent flight rule book, FX RES or F5 RES.

 

Details on Page 40.

 

I don't understand the class well (I compete in F5J) but they are small gliders either being electro launched or bungeed, there are postal competitions and I think this year it will be an event at Radioglide.

 

Chaps who fly them would help for sure with motor queries, have a rummage around the BARCS forums.

 

The AndREaS is a popular model, motor options are listed there.

 

      Cheers

 

          Gary

Link to comment
Share on other sites

4 hours ago, Mike O'Neill said:

 

One really useful thing that Hyperflight has flagged up to me is that there are motors designed to cope with the slim nose of a glider needing to be converted to electric. So this one, for example (and assuming its power spec is suitable when running on a 3S) looks like it might be a candidate, because I think a motor diameter of 27mm could be right for the space in the Centiphase nose. Then I would have to find out what folding prop and blades I need to match it to me model weight/span, what ESC to get etc. 

 

If you have any thoughts on any of this I'm all ears! And thanks++ again

Mike, have a browse of a couple of sites.

 

Paul at Electricwingman is the UK importer of Axi Motors and his site has a useful motor calculator:

 

https://www.electricwingman.com/brushless-motors

 

Putting in 1300grams & glider throws up the following suggestions:

image.thumb.png.45efc43dc9c47479c6817183bb0375a3.png

If you look up each individual Axi motor on the site it has further set up information. In my experience (I've used both over many years) both Paul at Electricwingman and Neil at Hyperflight are very helpful and provide first class service.

 

Secondly have a browse of this thread where we discussed converting other similar 100" gliders to electric:

 

Link to comment
Share on other sites

Thanks Gary and John - I'll study those various suggestions. I think a suitably slim motor may be needed (i.e. < 30mm diameter), which may also limit choices. I was a BARCS member many years ago (even fluked 10th in Open Class with an own v-tail flapped design in ?1985 that I got a special award for, but how things have moved on since then!). 

Link to comment
Share on other sites

Mike, is the nose of your Centiphase significantly slimmer than the glass fibre kit version ? I'm pretty sure a 35mm or 36mm dia motor would easily fit in my glass Centiphase.

 

You wondered if 3s was enough for a 100" glider - I have a Reichard Classsic 100", RTF weight is 66oz, motor is an early version Axi 2820/10 turning a 10x6 using 3s 2200 battery. Climb from launch is near vertical & power is usually only on for 30 - 40secs at a time. 

BTW Axi motors are numbered using different criteria from most others, the 2820 is 35mm dia.  

 

Link to comment
Share on other sites

On 06/04/2022 at 12:16, PatMc said:

Mike, is the nose of your Centiphase significantly slimmer than the glass fibre kit version ? I'm pretty sure a 35mm or 36mm dia motor would easily fit in my glass Centiphase.

 

You wondered if 3s was enough for a 100" glider - I have a Reichard Classsic 100", RTF weight is 66oz, motor is an early version Axi 2820/10 turning a 10x6 using 3s 2200 battery. Climb from launch is near vertical & power is usually only on for 30 - 40secs at a time. 

BTW Axi motors are numbered using different criteria from most others, the 2820 is 35mm dia.  

 

Hi Pat and sorry for slow reply. Yes because of the built up wooden nature of the fuz on mine, the internal width in the nose is 35mm so there would be no clearance at all around many of the available motors. I've spotted a suitable looking on on Hyperlight site suggested by Ron Gray but its not especially cheap and its not currently in stock. I like though that its wires exit from the rear of the motor, also it has a casing so rotating part is not on the surface. It seems it is 28mm in diameter (and I will have to chekc that its length doesn't eat into the space where I Lipo might go. Here is a link to it

 

XPower F2919/10 Light 83g 1480 RPM/V

 

...and I'd be interested if anyone has any observations to make on it, or whether they know of a similar alternative that might be in stock somewhere! Meanwhile, I've not done the necessary fettling to get the Centiphase airworthy again as a glider, even if its 40 year old livery is a bit tired (but its the original and I'm loathe to change that!)

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...