Hi everybodies ........I noted the discussion few posts back about trying to get around using TWO channels on the two flap set ups on this plane. I used reversed servos JR821R kept the servos in the normal postion and used y-harness to tie the pairs together.

FF

well more progress today, I decided to plumb in the fuel tank and the tubing.... so.... why not just hook up everything temporary and give it a run on the front lawn..... it proved to me this Kit is OK but not super another two things I am not happy with first being the engine mounts I did not get much above idle and the spinner would have been jumping around so much if I had gunned the motor I am sure the prop would have broke! I will be getting rid of them but I dont like the idea of mounting a high performance motor onto a solid wood base... thats asking for trouble.... second thing of course like others my tail wheel popped off last thing when undoing the spinner screws THREE of them broke off the heads not very good

I noticed when I had the motor mounted on the saw horse on the front lawn that the vibration levels are quite high? is this normal for a 180 glow motor? I have not ballanced the prop as yet

I suspect you will have to balance the prop and that big plastic spinner (not easy to do). 180 four strokes do vibrate, but adding some out of balance stuff to the end of it can make it worse. Since I am using a 1.60 2-stroke I mounted it right to the wood with rubber spacers. For those with the big four strokes something with a bit more isolation would be in order.

Yeah I do intend to ballance it, I just wanted to fire it up, my magnetic ballancer wont do it so I have to wait until I buy a good one, as for the spinner I am going to chuck it in a lathe and put a hole in the end to allow it to be ballanced, but I am also temped to just get the dave platt unit I emailed him last night... what did it cost?

In all honesty, hard mounting 4 strokes is much better then trying to use vibration dampeners. Usually rubber type spacers have give to them that actually excells the vibration. I've always hardmounted 4 strokes to whatever plane they've been one...whether on a metal motor mount or not....no spongy type rubber material is used to isolate the motor. I tried it a couple times and it actually shook the plane half apart.

Many years ago, before the ready made engine mounts became available, the most common way of mounting engines were long hardwood beams reaching deep into the fuselage. I am aware the engines were smaller at the time, but at least the whole front half of the fuselage supported the engine.

In my opinion the rather thin ply plate on the 109 lacks some stiffness. This may lead to flexing of the plate, transmitting hard vibrations to the fuse. I am contemplating glueing two hardwood beams to the underside of the ply plate, each side of the crankcase opening, letting them reach all the way from the front plate to the firewall, and glue them securely at each end. Maybe 1/2" x 7/8" would be a suitable dimension. This should add considerable stiffness to the engine mounting plate.

It may also help to add a beam behind the engine, on top of the ply plate across the engine compartment.

Perhaps this is overkill, but the added weight will not be dramatic, and I think the stock arrangement is a bit weak anyway.

Helge.

I agree Kahlog, I watch the spinner just above idle doing a merry dance and the thing that I thought off was I am sure at some rpm you will get a resonance that will destroy something...

The Dave Platt spinner cost $50 + Shipping. I have not spun it up yet, but it seems to be fine. I had to build the spinner adaptor myself. I'm hoping the spinner will be strong enough to survive a nose over.

Hey, were is everybody.

I'm trying to get my CMP factory assembled version done for this Sunday.


Steve

Hello all. Selling my ME109 on RCU due to my first child due in Jan and whon't have time for the hobby for some time to come. Never had the chance to truely enjoy it.

Family first. Because no matter what ANYBODY says, history proves it again and again, only you provide QUALITY LIFE for your own.

I admire that Ram44.

Congratulations, hope all goes well.

Steve

Thank you Steve. She is my first and I look forward to finally being a parent.

Mabey when she is older, Airplanes will be introduced to her and she can keep me company at the field.

Those aren't airbrakes folks!

you will be back before you know it, my first son was 4 and second son was 1 when I got back in the hobby, now my garage/workshop is full of planes,hobby toys,surfboards, bikes too much stuff.
there 10 and 6 and are into daddys hobby shop,after they get boored of the playstation

the first is a wake up call the second is easy.

Anyone want to sell their stock black spinner? I am trying a new motor and the prop shaft diameter is different and the one that came with my kit has already been reamed for the original motor.

Yeah, I'll hold off for a while to adjust to the changes she brings but then I'll make up for lost time!!! Don't know when but you're right, it'll happen but until then, everything must go..

The changes can be great , dont let kids stop you let them grow you . I sat at the kistchen table with my sons at 5 and 7 , I worked on my small RC jobs like interiors , tail groups , hindeging ect , then I would get them a plastic model to build .-I have the work all over my shop .
Its great letting them explore its not about building correct at that age but about being creative . When they get to 4 and up , you can take them to the school , get them theer own littel fun park plane an watch them have a blast , we did the nitro car deal , boats ect .
Now at 15 and 18 , they have there ice hockey , girls ect and dad is backfull bore in RC fule plane lol . One more year of coaching ice hockey and then RC side will be even more of a focus .

Just a note, and a caution.

I am quickly assembling the mostly Factory CMP version to get it in the air.

As I was removing the broken screw from the plastic back plate the backplate cracked. I did not really put any pressure on it and yet it broke.

I never really had any luck with the CMP backplates in the past.

So I turned an alum one. It actually is true.

Steve

care to make one for me?

These days I have little time. But...............

I have another CMP factory backplate that I drilled wrong at 3/8". Slight drill wandering. If you need a larger than 3/8" hole, then its yours. But I would use a boring tool to true it up to the next larger size, if that would work for you Tell me where to send it.

Or use an insert in your current spinner and drill/bore as needed once again

Steve

Can you bore it true for a 10mm shaft? If so let me know. Ill send you info to where to send it and can pay you something if you like.
3/8 inch is 9.5mm so there may be room to get it true.

Its worth a try. Its maybe 1-1.5mm out so it should be doable to 10mm.

I have a mini lathe and mill, (I'm in rental housing/commercial space, not exactly along the same lines) so set up takes the most time since I have to "jig up" scraps first to see if my jigs even work.



Ill try it tomorrow and let you know. I will use a 10mm shaft as my test fit "jig" .

OK

Steve

thanx. If that doesnt work, any way you could replicate the aluminum one you made?

Kalog

I have tried to true the hole. It is 9.97mm. I think it may work for you. The two holes in the backplate are to hold the backplate in place since I need access to the center hole.

Please note that on the back of the CMP spinner I have removed the raised section that contacts the engine/motor flywheel. I did this because my OS 108 flywheel has a larger diameter than the backplate so I think more surface area is better.

If you want it I'll just drop it in the mail, maybe a padded envelope or CD type box. No big deal.


I wish I could spend more time in the shop, but time is limited. I already get "the look" when I'm in there too much.

Hope you understand.

Steve