Hi All,

The Lanyu P2B trainer is a very low cost C/L trainer for a .15 glow engine, and I was looking to play with a similar sized electric package. It comes complete with wheels, fuel tank and even a reasonable control handle. I've thought about converting this before because I had one of the models already, but looking for a place to stick the battery was a bit of a hassle, so I did not pursue the matter. Just lately, I've been teaching some newcomers so I had another look at this and came up with a way to make this quite practical. I had one of the E-Max 2220/05 motors in stock and thought that with its 1200 kv it might work on 3-cells. It was rather slow with the regular .15 size props like 7 x 6, 8 x 5 etc. and I ended up (so far) with a 9 x 6 APC E-prop. I'm still fiddling with motors and props so I'll post some more info later. I do have one of the smaller E-Max 2210/25 motors as well.

If you look at the photos below you'll see that this simple model puts the bell-crank under the model. The original idea is to fit it under the center of the fuselage, but you'll see that I moved it onto the inner wing. Just one important point......DON'T USE THE SUPPLIED BELL-CRANK!! It's too flimsy. I made a same size one out of 3 mm nylon, but just moved the pushrod hole in a bit to lower the sensitivity. I made a hole in the wing covering as shown in the photo "P2B mods 1.jpg" and added a triangle of 1/8" balsa to strengthen it up a bit. I then just added a small square of plastic film to re-cover the hole. The thing flies with the outer wing slightly down because of the low down bell-crank but I plan to add trim tab to correct this. I used some 1/16" ply to make the battery mount. It's cut into the fuz before inserting the wing and then it has the outer small ply plate that gets glued slightly into the wing as seen in "P2B mods 6.jpg" The Velcro strips get glued underneath with cyano.

Andy and I have been testing a more compact version of my KR governor timer with the connector pins turned around so that they go over the pc board. I have tried a small slide switch directly on the connector housing but this time I went to a small push-button. This is working very well right now so I will most likely make this available soon through RSM Distribution. I cut out the hole in the covering where the fuel tank goes and stuck a balsa block with Velcro top and bottom as in photo "P2B mods 3.jpg" It's glued in with cyano and it holds the timer in the inside and the 30 amp Hobbywing esc on the outside. The only battery I had at the time that could work was a 3-cell Flight Power 1300 25C lipo. Yesterday I managed to get an X-Power 1300 mAh that is much smaller and has more ooomph. I think that my Flight Power has been used for too long because it's dropping down too much under load.

It flies o.k and makes a very simple and cheap trainer. I managed to loop it either way and fly inverted with it as well, so I guess that for a basic trainer, it's doing the job. Maybe the installation will help others to get some ideas. Just by the way if Paul Winter is reading this........please note that I cleaned up my workbench!javascript:void(0);

Keith R