BJ CRAFT new plane Invitation...
#55
Join Date: Oct 2010
Location: Valencia,
CA
Posts: 44
Likes: 0
Received 0 Likes
on
0 Posts
Hi. Mavros
my YS 175 is still new engine and needle is way open for break-in with 18.1X11 APC prop.
I think, Invitation model is able to fly with YS 140 power. it is finshed weight is 4,740gram with out fuel. It is very light !
personaly, I like glow power a lot....
And following planis trying to use YS 185 Zero nitro engine. It will be another fun part.
alcohol fule price is low as gasoline price.
Alex W. Shim.
my YS 175 is still new engine and needle is way open for break-in with 18.1X11 APC prop.
I think, Invitation model is able to fly with YS 140 power. it is finshed weight is 4,740gram with out fuel. It is very light !
personaly, I like glow power a lot....
And following planis trying to use YS 185 Zero nitro engine. It will be another fun part.
alcohol fule price is low as gasoline price.
Alex W. Shim.
#57
I noticed looking at the photos of the engine area, it appears to be installed on a wood rail mount system? I would appreciate it very much , if someone could elaborate on this and post a few pic's of the rails installed.
Thank's
Bill
Thank's
Bill
#58
Senior Member
The exit area treatment has as much to do with cooling as inlet area does. So does ducting around the engine. If the cowl is done right, with a duct immediately behind the inlet in the cowl, the inlet should work okay in most climates. It's surprising how little it really takes. Very hot climates (Arizona, Texas) may present a problem in the Summer.
#60
My Feedback: (27)
Join Date: Nov 2002
Location: ohio
Posts: 554
Likes: 0
Received 0 Likes
on
0 Posts
I've started having problems with the os plugs. Kind of sounded like I was getting some sort of detonation while in the midrange area. Top end seemed to be alright. Had to change the first plug after 12 flights. Developed a problem keeping it running. Now the 2nd plug isn't working well after 3 flights. Same problem keeping it running. That's enough experimentation for me. Going back to the ignition, this is getting to aggravating.
#62
Join Date: Oct 2010
Location: Valencia,
CA
Posts: 44
Likes: 0
Received 0 Likes
on
0 Posts
Hi. Bill
hereis more pic of engine mount area.
It is the engine mount assembly with stock parts. Laminated fiberglass with 24hour epoxy resen.
View from back of fire wall.
When installing the engine. it's use YS super mount with 10mm fitted up from mount base.
To the engine vibration has a protection device inside the fuselage and step joint.
hereis more pic of engine mount area.
It is the engine mount assembly with stock parts. Laminated fiberglass with 24hour epoxy resen.
View from back of fire wall.
When installing the engine. it's use YS super mount with 10mm fitted up from mount base.
To the engine vibration has a protection device inside the fuselage and step joint.
#63
Join Date: Oct 2010
Location: Valencia,
CA
Posts: 44
Likes: 0
Received 0 Likes
on
0 Posts
Also, here is some cooling plan.
Due to the hi-profile designe, I put some form for help to the cooling of the engine head area.
Recommended to ues the long length plug heater.
It is real deep....!
I'm use Rapicon 30% fuel fo my 175 engine. This fuel is way better than other glow fuel.
This Rapicon fuel is significantly better feel compared to other fuels. At 2013 F3A world championship, Paysant-Leroux Christophe was used it.
will update soon... and see you at the field.
Alex W. Shim
#64
Thank you Alex,
Thank's for the photo's...............
I will get mine ordered in May through Mike. I want to have the white changed to yellow, all thought it looks great the way it is.
Regard's
Bill
Thank's for the photo's...............
I will get mine ordered in May through Mike. I want to have the white changed to yellow, all thought it looks great the way it is.
Regard's
Bill
#65
Any stateside dealers for this fuel?
Bill
Bill
Hi. Bill
hereis more pic of engine mount area.
It is the engine mount assembly with stock parts. Laminated fiberglass with 24hour epoxy resen.
View from back of fire wall.
When installing the engine. it's use YS super mount with 10mm fitted up from mount base.
To the engine vibration has a protection device inside the fuselage and step joint.
hereis more pic of engine mount area.
It is the engine mount assembly with stock parts. Laminated fiberglass with 24hour epoxy resen.
View from back of fire wall.
When installing the engine. it's use YS super mount with 10mm fitted up from mount base.
To the engine vibration has a protection device inside the fuselage and step joint.
#72
Hi Alex,
I don't plan on running a CDI version, either my 170DZ or the 185 non ignition, still deciding on the power plant. I will probably start with the 170 and move to a 185 later, can I purchase that fuel by the case? How does it compare to the Cool Power 30% Heli?
Thank's
BTW...Hope you are doing well...
Bill
I don't plan on running a CDI version, either my 170DZ or the 185 non ignition, still deciding on the power plant. I will probably start with the 170 and move to a 185 later, can I purchase that fuel by the case? How does it compare to the Cool Power 30% Heli?
Thank's
BTW...Hope you are doing well...
Bill
Last edited by AmericanSpectre505; 04-13-2015 at 01:11 PM.
#73
Join Date: Jan 2009
Location: NEWCASTLE, AUSTRALIA
Posts: 342
Likes: 0
Received 0 Likes
on
0 Posts
Thanks Haram,
Thats what I use ...just wondering how far out is your high speed needle set at ....mine is at 1.5 turns out with the regulator flush
kind regards
Mavros
Thats what I use ...just wondering how far out is your high speed needle set at ....mine is at 1.5 turns out with the regulator flush
kind regards
Mavros
#74
My Feedback: (92)
Join Date: Dec 2001
Location: Rosamond, CA
Posts: 2,089
Likes: 0
Received 0 Likes
on
0 Posts
Alex brought his Invitation to the Tailwinds field today and now that the freshly rebuilt 175 has been broken in and he has it set well it has plenty of power. BTW, his ran very well with an extremely nice idle. Impressive.
#75
Junior Member
Thread Starter
Join Date: Nov 2014
Location: South Korea
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
Hi ~ Guys
For the last two months I have been extremely busy with my jobs. so I hardly touch my plane, very recently I got back my invitation building up again.
I have ordered the engine parts and servo, and prepared my own design Hyde type soft mount with a motor bike inner rubber tube.
actually, yesterday, I re-started building up.
1. Servo
JR 8305 servo for rudder, aileron. JR 3401 for elevators for each. I think they are not the high end, but good enough I guess.
2. Hyde type soft mount
I designed it. a friend of mine made it with his laser cutter. I think it's OK in functional, but it's quite heavy, 140g. need to be downsized or find anther way to reduce the weight.
I had to make my own firewall for fitting with GT33 instead of the original kit one.
3. Engine installation.
before installing, I insert GT33 through the engine room space without extra cutting. it's possible to insert but very tight, better cut out the engine room entrance hole a bit.
The Invitation has large space of engine room, so no problem with installing the GT33 with Hatori option muffler.
4. Location & Installation of the Hatori option muffler.
I measure the space and location of the Hatori muffler in the middle of the fuselage. I'm pretty sure there is enough space for the muffler
it won't be any problem.
.
I will keep posting the whole process how to install the GT33 into my Invitation successfully.
Sungho
For the last two months I have been extremely busy with my jobs. so I hardly touch my plane, very recently I got back my invitation building up again.
I have ordered the engine parts and servo, and prepared my own design Hyde type soft mount with a motor bike inner rubber tube.
actually, yesterday, I re-started building up.
1. Servo
JR 8305 servo for rudder, aileron. JR 3401 for elevators for each. I think they are not the high end, but good enough I guess.
2. Hyde type soft mount
I designed it. a friend of mine made it with his laser cutter. I think it's OK in functional, but it's quite heavy, 140g. need to be downsized or find anther way to reduce the weight.
I had to make my own firewall for fitting with GT33 instead of the original kit one.
3. Engine installation.
before installing, I insert GT33 through the engine room space without extra cutting. it's possible to insert but very tight, better cut out the engine room entrance hole a bit.
The Invitation has large space of engine room, so no problem with installing the GT33 with Hatori option muffler.
4. Location & Installation of the Hatori option muffler.
I measure the space and location of the Hatori muffler in the middle of the fuselage. I'm pretty sure there is enough space for the muffler
it won't be any problem.
.
I will keep posting the whole process how to install the GT33 into my Invitation successfully.
Sungho