BobH

My Feedback: (2)

Crash, sorry I didn't mean to sound like I was looking for a fight. I have used just about every type of control system in my 40? plus years. Most are push rods but not always.

A lot of WWI planes use cables and there isn't always a good way around it.

Like most systems, controls or others, the system is only as good as the installer.

Dbp7966

Hi Capt Ron,

Many thanks for that, some pics of engine mount.

Motor is a MT 70 no real reason on this choice it seemed something to try.

I will get to weigh the plane soon so I can let you know the dry weight.

The Prop Driver is from YT in the UK puts that little touch on to it.

Cheers

DB

captainron

DB
Thanks, looking forward to hearing how well she flies. Going with the 4.2 Brison...69cc on mine........should Do the job!


RCU IS MY FACEBOOK...................................CAPTAIN RON

Craig B.

Hi Guys,

I have been working on my corsair with the Saito 450R and it looks like the engine is going to fit with mm to spare and 2 degrees right thrust set!!!! Yeeeehah! I am just seting in the blind nuts on the engine mounts but I have test fitted the cowling and it does not look like I am going to have any major probs getting it to go in the right place but there are only mm to spare!

I have had to make a dummy firewall that sits around 12-13mm back from the front of the moulded glass firewall and it has been a bit of fiddling around but it looks like it is going to work! I did not use the included engine mounting tube. The 450R is 15-20 longer, fore/aft than it should be to fit neatly in the cowl so to set the engine back was the way to go. In any event, I noted that the included tube gave left thrust too. some of the photos of the nearly finished corsair in the previous couple of pages seem to appear to be the same.

I will finish the job and take some photos. Just wanted to post this because there are a few guys interested in this combo, and why wouldn't you be? It should be great!

On with the build!

Regards,

Craig.

lomcevac540T

My Feedback: (1)

Can't wait to see this bird! Keep us up to date, and how about some pics?

Craig B.

Okay, finally got some pics from my phone (not the greatest quality). Here you go, just to prove that it does just fit.....

Here's what I did:

1. throw the fibreglass engine mounting tube in the bin
2. make a 6mm ply wood ring (section in four pieces so I could get it in fuse) and glued it to the back of the existing firewall
3. made a second high density plywood ring with a smaller inner circular cutout offset to cater for engine offset required for right thrust. This is what I mounted the engine too which effectively set the engine back 12-13mm from the front of the fibreglass firewall. This allowed for 4-6mm of clearance for the Keleo exhaust ring from the fiberglass firewall and brought the prop hub back towards the front of the cowling.
4. mount engine with 2 degrees right thrust and no down thrust relative to the firewall. This required routing of the mounting points on the left side of the fuse with a dremel.....a bit of fiddling but not very difficult. I then put the digital incidence meter on the stab fairing, wing and engine crank shaft and found that, relative to the stab the wing was 1 degree positive and the engine had 3 degrees down thrust (relative to the stab)
5. made some custom aluminium mounting brackets to mount the cowl to the fuse. Drilled and threaded the mounts (only a couple of the lower ones completed in the photos) for M3 button head bolts.

I screwed up when first routing the firewall on the left side as I had failed to note that the engine mount for the 450 R has a 19-20mm VERTICAL offset from the engine centreline. That's why my firewall looks like something that a dog chewed on but I will patch that up and you won't know any different when I am done. At least the engine goes in! I think I got the cowl reasonably well aligned and have only about 2mm clearance from each cylinder head.

Anyway, check out the pics. Hope that helps guys!

Craig.

Craig B.

What's with the photo formats??!!!! I did them all the same and they were all exported to the same spec from the same source!

Sorry guys, dunno what the story is there!

Craig.

Dbp7966

Hi Craig,

What was wrong with the supplied mount? Was is because your motor would not fit on it?

I used mine and have had no problems at all.

Cheers

DB

Dbp7966

Well Completed the Radio installation.

Used 2 Sat-alights on my 2.4 ghz
10 x Servos
3 x 5 Cell Batts

All up Dry weight is 28.5 Lbs

Cheers

DB

Growler84

My Feedback: (8)

DB,
Did the engine check out with RIGHT thrust offset on your installation using the supplied motor mount tube? With mine, using the supplied motor mount tube resulted in LEFT engine thrust offset.

flytaildragger

My Feedback: (8)

Not sure but I think that left thrust is not the right outcome. All my warbirds torgue to the left when throttled, right thrust or O is the desired effect. I am installing a 450R on my plane too, thinking about making it 0 degrees thrust to the centerline. I have a large 3 blade prop and it is supposed to counter the torgue in exchange for the P-factor.

Craig B.

Hi DB,

The main reason I ditched it is because I could not use it with my engine. When I first received the kit I test fitted it and it looked as though it would have given left thrust rather then right thrust. Had I been intending to fit a DA 50 I would have used it but put spacers on the front to obtain right thrust.

I was looking at your second photo in post number 227 of the engine installed on the fuse (view from below) and it looks like you have left thrust there (as a result of the angulation of the engine installation tube) Your engine looks to be pointing to the right with the fuse upside down, which means you may have left thrust. Photos can be deceptive though. Have you flown it yet?

Regards,

Craig.

Tom in Cincy

My Feedback: (16)

Hi Craig. I noticed the same thing. I had a preorder going on this Corsair for months but couldn't wait any longer and bought the Black Horse 50cc Corsair instead. I have built 2 other ESM ARFs and found them to be beautiful out of the box and then the problems begin. They simply are not engineered well.The left thrust is a perfect example. Not that the Black Horse is not without issues either. BTW I have a 450r installed in my Corsair.It has not flown as we are in the middle of winter here and the weather is bad.
Good luck. We will have to compare notes soon.
Tp

Pilot P51

My Feedback: (6)

Hey Tom
I have been watching this thread on this plane and I have to agree I had one other ESM plane and had the same problems, great out of the box. After reading this thread I see things have not changed.

I want to use the 450 as well. How well is the BH Corair built? I saw one video on this plane it looks like it flew very well.
thanks Walt

Tom in Cincy

My Feedback: (16)

I don't want to Hijack the thread so I will keep things to the point.(ha ha) About a month ago I sent FLY4MATION a PM asking him about the ESM Corsair as he reported flying it. His comments were very favorable regarding flight performance. Here are his comments. ""I was very pleased with the way it flew and landed. It landed lighter than the byron corsair I used to have. On the other hand I didnt like the build as their actuation and linkage methods were less than desireable. IE pull pull on elev and rudder also the flap mechanism was not engineered well. I used robart retracts as I didnt trust the esm ones and they were a bit pricey. So I did alot of mods on the build, buit was very happy with the overall performance afterwards. Also I was very happy with the appearance of the model . Hope this helps. Clark""
As far as the BH Corsair goes it built very nicely. Well engineered and it weighs 23 1/2 lbs dry. The included retracts have to be reworked. Not a big deal since the needed mods have been pretty much worked out. There is an active thread in the ARF/RTF section you might want to look at. Flight reports have all been positive. The 5lb weight savings has to help.

Pilot P51

My Feedback: (6)

Tom
I agree I did not want to hijack the thread. If I buy the EMS plane I was planning on using other hardware and going with different retracts not the stock ones after reading all the problems everyone has had.

I will check out the other thread on the BH Corsair. The landing gear on this plane caught my eye as well. I may shoot you an email so we can talk off line if I have any more questions.

Thanks again
Walt

LDM

My Feedback: (15)

so are you guys saying even the new heavy duty retracts have issues from ESM ?

Mr DJ

Another ESM Project http://www.rcuniverse.com/forum/m_10...m.htm#10242371

Mr DJ

flytaildragger

My Feedback: (8)

ESM retracts can receive a major improvement by Electrifying them by Lado Electric Actuators. Check out Magnum RC is where they have them.

lomcevac540T

My Feedback: (1)

Anyone seen the CJM retracts for this plane? They have them available at VQ Warbirds/

kwik

Really, is this such a big problem? Surely it can be fixed with a Dremel in 5 minutes?
Dremel away on one side, and feed in with some epoxy and microbaloons on the other side?

Personally I am grateful that ESM produce this wonderful warbird for us. I think the quality is great,
and wonder how it is possible to produce this ARF for such a low price. Panel lines, painted, markings....all just great stuff.

We must be a bit positive too! What if they just stop producing them. If Im not mistaken the scale outline is much better
on ESM than on BH. Right? Much more difficult to correct.....



Thanks ESM!

Oh, by the way; I have the same fault on mine....

And regarding nice ESM airplanes....look at this!!!!!!!!!!!

http://www.ytinternational.co.uk/bf109g/bf109g.htm

Dbp7966

Well Just had some pics of the Corsair, weathering done by Ian Redshaw, shall put some more on once have them.

Cheers

DB

flytaildragger

My Feedback: (8)

Beautiful weathering job, I am going to put a scale cockpit in mine to Doll it up.

Idigbo

Heres a couple more pics of DB7966 Corsair, I'll finish the job tomorrow. Weathered directly onto the standard finish, panels drawn on in ink and pencil, silver dry bushed on, faded fabric wing panels done using scotchbrite pads. DB wanted it finishing somewhere between flyable and the scrapyard!!! Nearer to scrapyard me thinks. Photos make it look more extreme than it is!

Ian

Mr DJ

Ian,

Awsome job with the weathering, but for me, I'll be leaving mine lookin' new. Why, because when birds are first made, guess what, the are and look new - nothing wrong with lookin' like it just rolled out the factory. And don't anyone beat me up for this; this is what I like; this is how "mine" will look. As I fly it in the sun, moist air, whatever, it will weather on it's own Will look nothing like DB's but it will be fine for me.

Again, excellent job...

Mr DJ