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Member postings for jrman

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

Thread: Model enlargement
14/07/2018 22:17:24

No. The weight would increase by the cube of the linear enlargement i.e. 1.5x1.5x1.5 = 3.375. (all other things being equal)

Thread: Spruce or Obechi for a wing spar?
20/06/2018 19:28:03

Cyano is sometimes reluctant to give a good bond to spruce but can be improved by rubbing baking soda on to the joint before introducing the cyano.

Thread: Valve work
09/06/2018 17:39:25

My understanding (on OS's at least) is that the valve seat has a sharp edge and is not chamfered like a car engines valve seat. Grinding does little to solve the leak.

Thread: 'Returner's questions'
06/06/2018 21:06:57

I would boil ( about 5 minutes) the old nylon props to restore their moisture content before using them.

Thread: Suppliers of 35 mHz crystals
23/05/2018 18:08:15

Try Hobby Plastic.( MacGregor)


https://www.hobbyplastic.co.uk/index.php?main_page=index&cPath=63_338_341&zenid=j2vs8a6cv9j1c9du776a9hhhe2

Thread: Can still climb tree's
16/05/2018 16:11:10

Look on the BMFA Club finder page for contact numbers of Southend Radio flying club and South Essex Model Aircraft society both of whom fly at Two Tree Island.

Thread: JR PCM9X11
03/05/2018 18:50:10

I'm intrigued Peter. It wasn't me but what was "I" doing?

03/05/2018 18:17:42

I've always found him very helpful but he is trying to run a business so don't expect a "screw by screw" explanation. He is one of this hobbies "nice guys"

Good luck.

03/05/2018 15:26:00

Worth a phone call to Mike Ridley at

http://modelradioworkshop.co.uk/

You can call Mike between 9.30am and 4.30pm Monday to Friday on:

07708 436163 – Please only ring this number in the normal work hours above.

Thread: I think I've fried my RX but have I toasted the battery and servos as well?
01/05/2018 18:41:39

It's not a JR or Spektrum switch. It's a "clone" by Perkins. Not sure if the wiring connections or mechanics are different though.

Thread: acetate help please
30/04/2018 18:19:30

Balsa Cabin do a good range of thicknesses and sell by the single A4 sheet.

Thread: what grass treatment do you use?
26/04/2018 21:01:05

Nappies.wink 2

Thread: OS 120 FS Surpass mk 2
14/04/2018 10:01:59

I've been looking for a replacement pump unit (metal not plastic) for an OS 120 MkII engine. If anyone has one I'd be pleased to hear about it.

Thread: Are Willis Warbirds still trading?
08/04/2018 12:14:20

Not sure if Chris is still making kits but you can probably contact him through this link to 2018 show.

http://www.warbirdsfightermeet.co.uk/

The other, totally different company, referenced in some of the posts is Warbird Replicas.

Thread: End for Maplins?
04/03/2018 10:04:58

Praktica ?

Thread: Coming back after 50 years: bit lost
17/01/2018 16:11:29

A better solution for holding the aerials in place is to fix a short piece of drinking straw or "snake outer" to the airframe and slide the aerial inside that. Taping is not a good idea as if you have "an arrival" the aerials may be torn out of the Rx.

16/01/2018 15:43:53

Don't want to worry you but didn't the FAKE Spektrum receivers have no orientation markings on them?

16/01/2018 13:47:49

Don't rely on just a flat piece of Velcro to hold the battery in place. IT WON'T. Use a velcro strap which goes around the battery and a suitable part of the airframe.

Thread: Thrust line wandering....
10/01/2018 19:04:44

Probably "Gyroscopic Precession.

Wikipedia can explain it better than I.

"Torque-induced precession (gyroscopic precession) is the phenomenon in which the axis of a spinning object (e.g., a gyroscope) describes a cone in space when an external torque is applied to it."

Thread: Servo cable tubes
15/12/2017 12:18:32

Ready rolled icing is on the same tubes. Been using them in built up wings for servo cable tubes as well.

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