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Member postings for Braddock, VC

Here is a list of all the postings Braddock, VC has made in our forums. Click on a thread name to jump to the thread.

Thread: In The Newsagents ...
23/05/2019 00:31:42

Percy, a little story. Wife and I went to the pilot at dungeness coinciding with the school run, I watched a boy breakdancing (?) along the pavement in a world of his own. I told my wife I remembered doing something like that one time when my school broke up for summer hols and I walked straight into a gas lamp post that floored me.

Happy days.

Thread: Futaba servos.
23/05/2019 00:26:31

As I mentioned, it dates back a quarter of a century, pretty confident that predates Chinese copying techniques.

Thread: OS Irvine 46 query
22/05/2019 23:55:30
Posted by RC Plane Flyer on 22/05/2019 19:07:28:

Hi Braddock had E Mail from Sussex models around 1630 to say all parts are made to order ?? had a second e mail at 1723 advising price and part numbers and 2/3 days delivery ??? . Will make a phone call tomorrow to see which is correct. Really struggling with this con rod at any position

I generally phone. If it's in Ripmax catalogue online generally it's available so you should be ok. Irvine parts are what's left after they ceased manufacture. You may be ok with the OS made engines as they tend to produce parts for some time.

Removing the Conrod can be difficult, quite important to get the top end of the rod toward the rear of the gudgeon pin then and grasp the rod with an L shaped tool near the big end, it should come off. Remember to mark the rod so it goes back the same way it came off. Some Irvine's have an oil hole drilled into the bronze bearing and this face of the rod should face toward the crank web.

If all else fails grip it with a pliers and pull, it HAS to come out. Any damage caused by the pliers can be dressed with some form of abrasive, as long as it's smooth it should be ok.

Please remember it's your engine and my advice assumes competence, if you damage it in any way it's your responsibility not mine, I'm just telling you how I do it.

Remember anything you read on the web is 99.9999% bull I just may be the odd 0.0001% or I may not 😉

Edited By Braddock, VC on 22/05/2019 23:56:29

Thread: Futaba servos.
22/05/2019 22:47:54

I have a great deal of confidence in futaba servos and I was sorting through my servo box tonight to come up with 5 for my soon to be completed Modeltech Cub.

Managed to get 4 S3001s and a handful of s148s and popped them all on the servo tester.

One of the 3001s had a problem with the gears and one of the 148s wouldn't work at all.

Twas the work of 5 minutes to swap the gear trains over and now I have 4 working 3001s and one 148 for the throttle.

I wondered why the 148 that I'd cannibalised had failed and there was no sound from the motor so I pulled the bottom off to test the continuity of the lead when I noticed the signal wire had broken free of the soldering to the pcb.

I could have soldered it back but I cut the lead off completely for future use and dumped it as I hate having 1/2 servos and, as I'd had it since 1994, it didn't owe me anything.

Whilst writing this post I remembered I have a couple more suspect 148s so I pulled it back out of the bin and when I get a moment I'll check out the three of them and see if I can get at least another one working.

To be continued...............

Thread: In The Newsagents ...
22/05/2019 20:27:27

Percy, you and I are in the minority. I have to say that I prefer my kids engrossed in their phones than smoking which was the pastime of the young many years ago.

I also note they don't pick their noses as much as kids in my day wink.

Thread: OS Irvine 46 query
22/05/2019 18:21:11
Posted by RC Plane Flyer on 22/05/2019 15:25:58:

Thanks for that awaiting reply via contact page

Wouldn't bother contacting ripmax, sussex model centre will do all that and charge you ripmax prices.

Just engines don't do an aftermarket liner for irvines I think it's safe to say, they used to do one for the OS Fx series but I think they don't do one for the Ax series now, maybe wrong though.

22/05/2019 18:18:01

Bottom

22/05/2019 14:54:20

PS I'd get the gudgeon pin as well it's peanuts. Delamination usually starts at exhaust side following insertion of something hard enough to crack the plating through the exhaust port whilst jacking out the liner eg when replacing bearings wink.

Use only wood or plastic.

22/05/2019 14:46:56

Ripmax.com, mkiv irvine 46 listed at £26.99. Get part number from website, also part no of retaining circlips and order via sussex model centre, delivery within the week.

22/05/2019 13:18:58

Two things spring to mind, firstly the liner is shedding its chrome plating, can be checked by looking through the exhaust port though the delamination normally starts on the exhaust side in which case remove the cylinder head and scrutinise the bore, if it's ok the other thing that I've had with irvines is the gudgeon or wrist pin failing completely and breaking in two at the end of one of the relief bores in the pin, generally can only be found by dismantling the engine and, tbh, if it's that spares will be a problem.

Beneath is a picture of one of the two failures that I experienced, no spares so used the shank of a suitably sized hss twist drill dremelled off and trimmed to suit; circlips to retain the pin are hard to come by, remove with a magnetised scalpel blade for retention.

img_0159.jpg

Thread: Engine for largish cw Cub
17/05/2019 21:05:02
Posted by Percy Verance on 17/05/2019 21:01:05:

I'm not in the least bit surprised a 7lb Cub was lively with a Laser 100 up front. I flew my 13.5lb 1/4 scale Cub on a Laser 100 with ease......

I've refreshed that, all components weigh 10 1/2 pounds, say 11 by the time fuel is added.

17/05/2019 17:24:15

Looking back, I think I should be alright, I flew the Brian Taylor Hurricane with the same laser 80 and it flew fine, I think the weight wasn't quite as much but hey, it's a cub.

17/05/2019 17:20:36

Just weighed all the components and, gulp, 10.5 pounds with the laser 80, 10.8 pounds with the laser 100.

Will 10.5 pounds (say 11 with fuel) be too much for a laser 80?

17/05/2019 16:51:50

One of the issues I have with this model of the Cub (it also affects the world models' version) is a stress raiser right where the aft fuselage joins the front half, just under the t/e of the wing.

Our strip is quite bumpy and tufty and a couple of planes, particularly the wm cub have tripped up and whiplash has snapped the fuse where this stress raiser is, I'll try and get a couple of pictures later.

I have a cunning plan to reinforce the strength of this area and will show it as time goes by.

17/05/2019 16:44:24

Cut a long story short, bought another YT Cub, an artc kit. Some covering has been applied, the wings and fuselage are covered in white solartex, the remainder is bald.

As white solartex is like rocking horse pooh I spent a morning googling and, true to form, picked a model that suggests the availability of white solartex!

I have some blue solartex of nearly the right shade so will strip the fuselage and salvage the white solartex to cover the tailplane and struts. Then I'll cover the fuselage with the blue solartex I've had waiting for a rainy day.

I spent part of the morning making up adaptors so I can easily swap engine mounts if need be.

g pooh pix.jpg

Edited By Braddock, VC on 17/05/2019 16:45:04

Edited By Braddock, VC on 17/05/2019 16:46:35

Thread: World Models Cub Rebuild
13/05/2019 10:13:38

I just love cubs, don't know if I could get one this size past her indoors, she threw a wobbly when I brought my 1/4 scale clipped wing one in.

I've run out of white solartex and still have to cover the tail feathers and ailerons, cleft stick catching me here.

sad

Thread: Wots with chris foss?
06/05/2019 21:53:06

Are you referring to the artf or artb ranges?

Thread: Futaba T14SG chat
27/04/2019 18:42:14

Thanks malcolm, I've had a twiddle and will check it out next time at the flying field.

27/04/2019 10:20:36

I have a problem with the engine cut and idle down facility.

I suspect it's my own fault but it only seems to happen when the throttle servo is reversed.

I've checked on my kindle copy of malcolm's book but it doesn't switch my light on (or cause my penny to drop) any pointers gratefully received.

Thread: Wash out
26/04/2019 08:44:31

DB cub was originally designed under the direction of the late David Boddington a man who really knew his onions.

Cubs are quite often mistakenly bought as trainers where the addition of washout can transform a plane like the cub, especially when flying low and slow if sudden evasive movements are suddenly called for.

Washout is not 100% necessary but if you lack experience it's not a bad idea, especially for the first few flights.

I have a Sig 1/5th scale cub and the plans and instruction book make no mention of washout but the kit is marketed as almost a scale model whereas the DB version clearly is not 100% scale.

Personally I'd follow the instructions.

Remember caveat emptor when assessing advice proffered on the internet.

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