bert baker

I’ve recently been given a NGH 35 it has come to me as a rear exhaust I have no clue if it was like it from new or if it was converted A chum said that the rear exhaust option requires a new piston I can only assume my piston is ok what was dit to the side exhaust piston setup logic would think is the piston ring gap location peg but are there other slight mods to the skirt how would I be able to tell

I’ve recently been given one of these NGH35 to play with I was told it would run the die so I thought I would check out what has been said here about the pulse orifice for the pump not lining up with gaskets and spacers etc I removed the carb and the bits were all made correctly so a quick inspection of the carb face told the story Yep the carb had been put on round the wrong way The benefit is that the cowl also fits better now ive still to run the engine but lessons can be learnt from going back through forums

I simply just used epoxy to fix them in place you do need to make sure the top centre section is parallel to the lower wing dowel holes Id recommend not using the tangs for the wing struts and order the Practical scale fittings

Yeah food for thought, I’m not a fan of videos on maiden’s, But it is a good diagnostic tool, I’m going to fly it again now I know what it’s like to fly such a model, I would say I was a bit nervous about flying it after so much work had gone into it, I did start to relax and even let my son William have a go and do the loop so hopefully next outing I can do some more tests, I didn’t do a stall test and really should do

You very welcome

Oh and yes I changed the name to Judy B instead of Judy L for SWMBO

I’m not sure why this happens with the videos, some can and some can’t, I’ll try to put a link to another video of the maiden

Cheers for the heads up, I’ll give it a go

Yeah she flys great, A lot more gentle than I expected it to be One concern that has proved to be correct is the axle is a little to weak for my liking It bounced on landing and the right wheel bent up a bit I bent it down a bit to easy so the plan is to replace the axle or complete undercarriage

IMG_4998.MOV First of many more take offs IMG_4970.MOV

Finally managed to get it out and carry out all the pre flight checks, The maiden went well

Sorry to read that you didn’t get to complete the plane. Mine is under a major repair engine wise I’ve removed the Siedel 7-70 as it lost compression on all cylinders and is now in process of a complete overhaul. so I could fly it,I fitted a Zenoah G38 up front,this has totally transformed the plane and the way it flys, It’s lost just over 1kg of the nose and is so much better for it I’ve made the same mount as the radial so no extra holes have been made,

Many thanks for help, must confess I’ve not pulled the valves out yet might just need a gentle clean

Hi, I have a Seidel 7-70 radial and the piston rings were found to be gummed up, having freed them off it now appears that the valves don’t seat properly, I have given them a bit more clearance on gap but it didn’t change anything I have left the inlet and exhaust tube off for now I do recall Morris mini motors radials have bags of compression I’m thinking I need to lap the valves in gently, but not sure what paste or where to get paste to do the job or even if I should try at all any thoughts from anyone who has successfully lapped these type of small valves in