By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by CML

Cambrian ME109 Funfighter electric build

All Topics | Latest Posts

Search for:  in Thread Title in  
martin collins 124/08/2019 19:44:17
avatar
293 forum posts
137 photos

Was going to use 15 min epoxy on the centre wing bandage but the instructions mention using PVA, i can see this would sand better and maybe soak into the bandage better, anyone used PVA or are you all Epoxy users for this job?

Stuart Z24/08/2019 20:45:23
avatar
389 forum posts

Hi

I use Epoxy. I suspect PVA but I like the solidity of Epoxy, and a slower setting one at that.

S

daniel handley29/08/2019 12:33:11
avatar
81 forum posts
23 photos

Hi martin.

Hows the build going any updates.

Cheers

Dan

Robert Parker29/08/2019 12:58:28
avatar
937 forum posts
1212 photos

Hi Martin,

Probably a bit late but I use PVA for wing bandages and have done so for many years without fail.

I built one of these back in the 90"s, covered in tissue and dope and sprayed with car paints and fuel proofed.

me109 (1280x864).jpg

Nigel R29/08/2019 13:27:56
avatar
3394 forum posts
524 photos

"Was going to use 15 min epoxy on the centre wing bandage but the instructions mention using PVA, i can see this would sand better and maybe soak into the bandage better, anyone used PVA "

I use vanilla PVA for wing bandages. Never a problem. Much cleaner & cheaper than epoxy. I don't use thick bandages actually, I use glass surface tissue / cloth, the really lightweight stuff, and do 3 layers - one wide, one medium, and one narrow. Credit card or similar is the weapon of choice to spread PVA over the bandage. Several coats after the cloth is on will fill the weave quite well. If you use multiple layers of thin cloth it does not need blending or sanding at the edge.

Only thing to remember with PVA is the water content, so do it somewhere warm where it will dry relatively quickly.

Edited By Nigel R on 29/08/2019 13:31:47

martin collins 127/12/2019 21:09:25
avatar
293 forum posts
137 photos

I`m sure a number of you who have read this thread from the start have assumed the 109 build had fallen into another of my never to be finished kits. No siree, just a pause for other hobbies, work has recommenced this evening, a couple of new kits have arrived courtesy of Santa, a Cambrian Cassutt racer and a Tony Nijhuis Gnat EDF. So before the Gnat gets started for my participation in the 2020 mass build i must at least get the 109 airframe finished and ready to cover.

Tonight i have started attaching the battery hatch and fuselage side sheeting, these need gluing along the bottom edge first so that when it is curled around the curved fuselage side it can be pinned at the top edge and stay in shape. Quickest way would be using the devils glue (thin cyano, which gives me breathing problems) but this build is being done with Aliphatic which i prefer so no more progress in this area until tomorrow when the glue has dried.

The wing is strengthened in the join area with a fibreglass bandage, i finally decided on 30 min epoxy to impregnate the bandage and to stop the epoxy binding up the aileron linkages i put some Plasticine around the rods.

More updates once i have all the side sheeting on and sanded in a couple of days time.

img_20191227_152856_resized_20191227_032954878.jpg

img_20191227_160916_resized_20191227_040942111.jpg

Chris Walby28/12/2019 07:12:43
avatar
1067 forum posts
253 photos

Hi Martin,

I had one of these three years ago, nice kit with most of the bits need for the build. My idea was to gain some building experience with a quick build and a model that didn't need any field assembly. There was another motive and that was to have something that was fast to practice with.

I had a load of 3S2200 lipos left over from the high wing foam model so that's where I started on the search for more speed.

From memory

  • Fit a rudder servo as I did an intro pylon day (great fun at BMFA Buckminister), but you can't knife edge it without!
  • Under hand launch at 3/4 throttle and get on top of the torque roll...beef up motor mount and make the cowl removable ahs it helps when fixing the motor mount!
  • PVA wing bandage and pull insane tight turns and they never clapped, in fact when it finally crashed for the last time the wing is still complete

Summary

  • Nice build, but thick wing profile so nice and tame but has high drag
  • Couple of errors in the instructions, but photos very helpful
  • If you want fast this is not the model, I wound it up to 381 W/Kg and it just demonstrated that massive power does not overcome high drag
  • I would try the other funfighter manufacturer next time

All the best with your build and keep posting progress

Are you intending to go 3S or 4S setup?

martin collins 128/12/2019 09:46:32
avatar
293 forum posts
137 photos

In the interests of keeping it light so i can launch it myself it will be on 2200 3s, i have a kit from the other manufacturer of a KI-61 Hein which will be on 4s, thinner wing on that for more speed.

daniel handley28/12/2019 12:51:33
avatar
81 forum posts
23 photos

Good to see this build back.

Dan

martin collins 128/12/2019 13:26:32
avatar
293 forum posts
137 photos

Ok, left hand side sheeting has now been curved around the fuselage, glued and pinned in place, Top tip in the instructions was to throughly wet the outside of the sheeting and let it soak in for 10 mins, this makes bending rather than snapping the sheet much easier. Minor observation on the sheeting is that in the instructions it says cut 18mm off the 2mm sheet supplied for the battey hatch, having done this it didn`t leave enough on the sheet to get the other 18mm for the other side and leave enough for the bottom fuselage sheeting. It would have been better to just cut enough to cover the hatch sides which would have then left enough for the bottom. Also i am still short of sheet wood in the kit, one sheet would do the battery hatch sides and the underside of the fuz, the other sheet is used on the main fuselage side sheeting, there is not enough to do the cockpit sides and the piece which is forward of that up to the battery hatch. Another 1/2 sheet would have covered it. Luckily i have quite a stock of balsa sheet so a visit to the model shop is not needed! Minor niggle on what is a very nice kit and a fun build so far.

img_20191228_130950_resized_20191228_011118228.jpgimg_20191228_131002_resized_20191228_011053027.jpg

martin collins 128/12/2019 16:54:15
avatar
293 forum posts
137 photos

Wing joint with 30 min epoxy, glue heated to thin and masking tape outboard of joint to stop spread of glue, removed BEFORE the glue sets!

 

img_20191228_164945_resized_20191228_045004232.jpg

img_20191228_170215_resized_20191228_050252093.jpgEdited By martin collins 1 on 28/12/2019 16:55:23

Edited By martin collins 1 on 28/12/2019 17:05:04

daniel handley28/12/2019 18:49:14
avatar
81 forum posts
23 photos

Looking good...

I wondered earlier what the green and purple stuff was in by the control rods. I see it is to stop the epoxy getting in there and gluing them up solid..

Have you decided how your going to finish it.... Paint or film?

martin collins 128/12/2019 19:16:16
avatar
293 forum posts
137 photos

Still waiting for inspiration on the finish, saw a really nicely painted Hurri on the Cambrian stand at the NATS, i would like to finish it like that, Steve was going to ask the owner what he had used.

Trevor Crook29/12/2019 18:50:55
903 forum posts
67 photos

For a BoB scheme, these are a good decal set for not much money. Out of stock at present though.

https://hobbyking.com/en_us/durafly-bf-109e-1100mm-battle-of-britain-scheme-decal-sticker-set.html

martin collins 129/12/2019 18:59:37
avatar
293 forum posts
137 photos

Thanks for that, todays progress second fuz side sheeting going on, hole at back made for elevator snake exit...........

Couldn`t resist adding a few lightening holes, probably a waste of time but it made me feel good   laugh

img_20191229_185455_resized_20191229_065528860.jpg

Edited By martin collins 1 on 29/12/2019 19:04:28

Edited By martin collins 1 on 29/12/2019 19:08:11

martin collins 101/01/2020 21:55:21
avatar
293 forum posts
137 photos

I have Tomorrow off work and will be spending some of it sanding the airframe to shape, what have others done for cutting the upper fuselage gun ports in the nose? Looks like i will finish mine with tissue and dope before spray painting it. Still considering which scheme to paint it as, there are so many goods ones, i quite like the idea of one from the Battle of Britain but the African theater ones also look great.............

martin collins 102/01/2020 15:49:14
avatar
293 forum posts
137 photos

img_20200102_132315_resized_20200102_031434079.jpgFuselage is now sanded to the rough shape, cowling has yet to be tackled, i want to make sure the motor is in the centre of the cowl so the spinner lines up nicely and then i will be adding some dowels and magnets to hold the cowl in place. The sanding can then commence! Pretty pleased with the way it is coming along. I have narrowed the colour scheme down to two German, one Swiss and one Bulgarian. Maybe in need to buy more FunFighter 109`s!!!

img_20200102_151317_resized_20200102_031354081.jpg

Edited By martin collins 1 on 02/01/2020 15:55:32

martin collins 105/01/2020 21:05:29
avatar
293 forum posts
137 photos

Plenty of progress in the last few evenings, elevator snake fitted, bottom sheeting glued on, motor fitted and nose cowling and nose ring glued on, i found i can still remove the 4 motor screws with the cowl fixed in place so there was no need to make it removable. Also fitted was the block bottom to the forward fuselage, the fin has also now been added and the front edge rounded to shape.

Hopefully tomorrow after work i can get my teeth into sanding the nose cowling to shape and also the center wing bandage, once done we are coming towards the end of the build phase and i will then start the covering.

As a note, there was enough sheeting left to cover the bottom of the fuselage, having looked at the plan again it notes that the grain direction for this should be across the fuselage. This means cutting it into sections to do the job and there was some to spare in the end............

Pictures once the nose sanding has been completed.

martin collins 108/01/2020 22:31:08
avatar
293 forum posts
137 photos

Sanding phase now complete after a stuttering start, i was using one of those paper masks with an excuse for a filter in the end of it but my breath kept steaming my glasses up when wearing it, not good if you want to see the wood you are removing! Today i swung by Screwfix and picked up a proper rubber one with twin removable filters on it, works a treat, just in from the workshop now as i was determined to finish the sanding tonight. Going to spend tomorrow evening reading up on tissue and dope finishing on a solid airframe before i tackle the covering..............

Sorry about the poor quality pictures, i will take some better ones in daylight

img_20200108_220218_resized_20200108_101917574.jpgimg_20200108_220209_resized_20200108_101941327.jpg

Edited By martin collins 1 on 08/01/2020 22:33:12

daniel handley08/01/2020 22:43:24
avatar
81 forum posts
23 photos

Hi martin.

That looks really good.

I Have followed your build from the start which now seems like it has gone really quick.

Im looking forward to seeing the end result

Good luck with the tissue and dope I would offer some advice but I havent done that before either I have only ever used iron on film from hobbyking.

Dan

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of RCM&E? Use our magazine locator link to find your nearest stockist!

Find RCM&E! 

Latest Forum Posts
Support Our Partners
Sussex Model Centre
CML
Wings & Wheels 2019
Cambridge Gliding Club
Slec
CADMA
electricwingman 2017
Advertise With Us
Sarik
Latest "For Sale" Ads
Do you use a throttle kill switch?
Q: This refers to electric-powered models but do you use a throttle kill switch?

 Yes
 No
 Sometimes
 Rarely

Latest Reviews
Digital Back Issues

RCM&E Digital Back Issues

Contact us

Contact us