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DeHavilland Mosquito

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Old 10-28-2014, 07:19 AM
  #1751  
david polley
 
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Dear Cody.
In the video I was running O.S.40SF ringed engines that I had rebuilt, but they were still too small to use 11 inch props.. The 11 X 6 props would just load down the engines and they never performed so I ended up using 10 X 5 Top Flight Power Point props...As you see when the model is coming in for the landing in the slow motion video the props don't even look scale, however it is what I had to go with..... Here is a short video link with the engines running in perfect harmony on a test flight before I decided to mount the nacelles.... When you get the engines set together this is the result...That awesome sound a twin makes is worth all of the trouble when you finally get them running together.... This is what I love about flying twins....That sound is just beautiful to listen too....These are mechanically tuned "old school" but with a lot of patience they will sound like this...... I am now using O.S.46FX engines and 11 X 6 props..... The 11 inch props finally give me a little prop wash on the rudder, which I was completely missing with the 10 inch props.....I also have much more power which is what you really need to get this off the ground...Mine weighs 13 pounds... This model can be an absolute handful when trying to take off with just engines and no rudder until you pick up enough speed for the rudder to have any effect.....All the more reason the engines must be as close together as possible from idle to throttle up to full power....... I am sure 12 inch props would give the scale appearance one is use to seeing on the real mosquito... 12 inch 3 bladed props would be ideal, but getting the engines you need to effectively run the prop would be another issue...... Anyway, here is the link that lets you hear how the engines sound when they are together.....I will send you a video link of my newest version of the model that has the leading edges I was talking about and the 46FX engines...That video was the maiden flight and the engines were pretty close but not exactly in sync. I still fly that model today. http://www.youtube.com/watch?v=zZPewtLpsCE

Last edited by david polley; 10-28-2014 at 07:32 AM.
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Old 10-28-2014, 08:07 AM
  #1752  
david polley
 
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Cody

Here is the model I fly today with 8 years of research, testing, lots of modifications and upgrades....This is the maiden flight of my fourth CMP mosquito....Your thoughts again would be appreciated....Using Rebuilt O.S.46FX engines and O.S.40SF carburetors... The O.S. "4D" carb will work just fine on the 46 FX as it has the needle valve up front... I had no room for the rear mounted needle valve those engines normally come with..... Turning 11 x 6 Top Flight power point props....Using K&B 1L standard glow plugs and running Morgan Omega 15% fuel....This model is using "Fultz" Dual Strut adjustable fixed landing gear and Dave Brown 3 1/2 inch lite flight wheels and Dave Brown 3 1/2 inch parabolic P-51 Style spinners.... Landing gear blocks have added hardwood blocks mounted on top and under the original gear block from the manufacturer... Their gear block is "obechie" woods from China which our very soft and porous and will not hold up to the smoothest of landings...They will rip right our of the mounts first time....Their fixed gear, as hard as this is to believe will bend very easily.....You must use digital servos in the rudder and elevator. I used a digital servo for the flaps too... Used standard servos in the ailerons and throttle.....I have no computer radio that has preprogrammed settings on the engines or flaps.... I have read a lot about programming each engine on a logarithmic scale using an RPM meter and such but none of that is necessary....You will be able to hear what you need to get the engines running together....I am not using any gyros......CG is exactly 111 mm. Weight, 13 pounds. I still fly on 72 MHz, one of the few left at our flying club that does so... I am using a JR transmitter with a Hitec receiver... I never liked JR's ABC&W single conversion receivers. They had AGC issues when in the proximity of several other 72 MHz transmitters causing you model to flinch or take a quick hit on an approach on a busy day when there were a lot of folks on the flight line.... Hitec was still the traditional full dual conversion receiver that it was designed for in the day.....Never had any king of glitch or AGC issues with the Hitec receiver...Today of course it is a mute point..................Here is the link....Hope you like this one...
http://www.youtube.com/watch?v=vCqfrthqL6c
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Old 01-11-2016, 04:07 PM
  #1753  
dannydee
 
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im in north wales uk. would you be able to help me source somewhere to get moulds sorted to build a large mossy..its been my dream a long time ..
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Old 01-11-2016, 04:24 PM
  #1754  
david polley
 
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Dear Dannydee.... I sure do wish I could help you with this one....I believe "Bob Holman Plans" has what you are looking for...The plans are for a 124 inch wingspan and the finished product will get you into the 50 pound range.. It is not a kit.. You would have to purchase all of the wood and such, but they can provide you with some of the other things you will need.... This model I am flying has a 73 inch wingspan....Here is a really nice photo from 2014 taken by Wildlife Photographer Pat Bell....Good Luck my friend.....
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Old 01-11-2016, 05:40 PM
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There are places that if they have the plans they can laser cut bulkheads and the time consuming stuff. the ribs would be a great help also as each pair of ribs are a different size. PLUS any and all cut-outs to keep things light. I think there was one advertised in RC Canada and a couple in the US. Just have to do some googling as there may also be some in Europe. as well. that would be a tremendous step foreword plus the accuracy would also be excellent.

Just starting the receiver install and have a couple of more servos in the wing. . My wing panels will be removable and it's all here in this forum a bit back.

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Old 01-11-2016, 10:04 PM
  #1756  
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Dannydee,

I have sold my CMP Mossi to Switzerland and I will now go with the new Tony Nijhuis Mossi.

She's build very nice but also a bit small for me (72inch)...he will scale it up to 250 cm, (1/1.35) he makes new plans

and cnc kit for me. In this size all the Mick Reeves Parts fits well......

Best regards

Andy
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Old 01-12-2016, 03:33 AM
  #1757  
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Originally Posted by dannydee View Post
im in north wales uk. would you be able to help me source somewhere to get moulds sorted to build a large mossy..its been my dream a long time ..
You could try http://www.rawleaviation.blogspot.co.uk/p/plans.html He does sometimes take a while to respond but he has all mouldings etc you need.
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Old 08-12-2019, 07:04 AM
  #1758  
david polley
 
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I finally lost my Nitro-Planes De-Havilland Mosquito I had been rebuilding and re-engineering since 2006... I went through 3 different versions of the model which gave me the 4th version shown here I completed in the Fall of 2011. I had spent years figuring out the CG was off in the original manual... that the landing gear blocks were just awful... that the flat leading edges for the intake decals were causing the model to drop and stop flying, and so on... I had this model for 7 years.

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Old 08-12-2019, 07:27 AM
  #1759  
DragonLines
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Sorry to hear about your loss. I still have an original with the wing spar defect hanging in my shop. My replacement went down when an engine stalled years ago. It flew fine until then. Nice looking planes anyway.
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Old 08-12-2019, 08:43 AM
  #1760  
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Dear DragonLines,


Yes I was flying it so well last Saturday (August 3rd, 2019) at our Greater Cincinnati Radio Control Club “Flying Circus” we put on ever year… I have been a member of the club now for 40 years… The photo was taken by a local Wild Life Photographer named Pat Bell…Just a great guy who captured the moment in time of my first landing of the model of the day… She flew just great… Then on Sunday, I had one of the best take offs I had ever had. Lifting the tail, and taking down the runway some 200 feet on two wheels before I lifted off in front of some 3000 people… It was just awesome, so during the flight which went really well, I decide to bring her in and all of a sudden I had absolutely no control some 200 feet above the runway and It trolled over and hit the pavement…… It is possible I lost an engine on final and did not realize that…l I do not know…….



It is in pieces now, however I have 2 brand new fuselages with parts and canopies…. If anyone out there has a wing kit for this, I would gladly purchase it…… After finally figuring everything out on how to get this in the air, it would be so much easier to build the replacement wing and still use most of what I have left….



Here is another photo of the model In flight from the same day taken by Pat Bell….

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Old 08-12-2019, 08:56 AM
  #1761  
DragonLines
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Sounds just like what happened to mine. I know an engine died on it so could be what happened to you. The wing I have isn't usable. The first batch they built failed to reinforce the joiners and had a rash of them collapsing in flight. They replaced the entire model back then so it is just hanging there. Unfortunately, if you are going to fly you are going to crash at some point. Still I know how it feels to lose a plane you put so much work in.
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Old 08-12-2019, 09:04 AM
  #1762  
david polley
 
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Thanks so much..... Here is a video of the maiden flight back in November 2011... I guess I will put a plea in this forum to see if anyone still has a wing...

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Old 08-12-2019, 09:11 AM
  #1763  
david polley
 
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Does Anyone out there in this forum still have a wing kit for the Nitro Planes ( China Model Products)....original 73 inch De-Havilland Mosquito....?? I am looking for one, or even better, does anyone still have the kit but never got around to building it.... Please let me know....
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David Polley
Cincinnati Ohio USA
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