Graff

Maybe the body is that, but the wing is 2 meter span instead of 152 cm.....

No, it's way bigger wingspan than that.

The body might be 1/5, but the wingspan is too wide.... I guess it's a mistake of some sort.

Hi all, I have this 1/4 scale Sopwith pup, built from a DB kit back in 2000... I bought another Pup the other day that was sold as a DB 1/4 scale Pup. But when I put them together, the size difference is huge... Here is my old one in front: Okay.... Then we have the wings: The new one is smaller, but the wingspan isn't much shorter.... The cowling of the old one compared with the new: You can also see the wheels. So, what gives? The big one is mostly correct when the judges compared the three views of it (except the cowling, which is being replaced with the short lose one). I can't see how two DB models can be so different, so the new model is obviously something else. But what? Thanks.

To summarize the season, I competed three times in F4H with the Pup, and it performed flawlessly everytime. It was even good in winds up to 7-8 m/s. I actually ended up fourth overall. The only change I did was using a 20x6 "Sail" propeller. It flew much better with it. For the next season I have a list of improvements to make. 1- Add a dummy engine 2- build a better cowl. 3- repaint in this scheme: 4- add details! 5- make a better scale documentation.

It all depends on what you print it with. I use tough ABS like resin with some flex additive mixed in. Not only does it make the prints very crisp in detail, they are not so temperature sensitive as FDM prints.

I do have the full version as well. 😉 But this isn't a true to scale Le-Rhone dummy, it's made to fit the Saito engine.

I designed a Le Rhone engine dummy to fit the Saito FG33r3 radial engine (also fits the methanol powered version). I'll print a test and see how it works in real life.

The first scale competition for the year was today, and I finished 5:th out of 9 contestants. The Pup did its job wonderfully.

Thanks, I will try a 20x6 and see how it works. The problem is that my suppliers has had the 6" pitch props on backorder....

Hi all! I obtained a quarter scale Sopwith Pup a while back. It was equipped with a Saito fg33r3 radial with a faulty ignition system..... I replaced the ignition system and installed the rest of the electrics. I balanced it at 145 mm, and it works okay there. I flew it today, and wow what an aircraft. Sure, I had to trim a lot of down and a few clicks right aileron, but it flies very scale like. The sound of the radial is very mesmerizing! The loops were quite big, so the power is "enough"... I use a wood 17X8 propeller. The fuel is alkylate petrol with 7% Stihl HP Ultra oil.

Hi all, I have this Provost, but I have no clue to where the C of G should be. It's currently at 1/3 of the wing, which seems a bit too far back.... Would be nice to have a good starting point.

Well.... I went to the distribution hub today and picked up my Zeee batteries. They look really great and seems to be great value (even if I had to drive 200 km to pick them up, which made the shipping quite expensive.....).

And so it begins. Got an email with a "shipping update".... Due to unforseen circumstances (yeah, right) we can't give a date for delivery. As I said, UPS sucks. The tracking information is a fun read, it started in northern Poland (roughly 400 km away) and then went to Germany before the last update where it was in NL.... That's more than 800 km away! Amazing.....

It's finished now. The boots turned out really great.