Prop. Shaft fixing

Started by Spence
13 replies 76 likes Last activity: 3 years ago
#14

Prop. Shaft fixing

Thanks for the wealth of replies Guys, so helpful and comprehensive. I have some JB Marine Weld so definitely sounds the way to go. Also appreciate the information on receivers. Once again thanks to you all, Cheers Spence.
Liked by Len1 and AlessandroSPQR
#13

Prop. Shaft fixing

I use 2part epoxy with no prblems but take note what ColinH and LewZ wrote
Liked by Len1 and Spence and
#12

Prop. Shaft fixing

I have always used 2 part epoxy on both fiberglass and wood. Never had a problem
Liked by Len1 and Spence and
#11

Prop. Shaft fixing

Also, roughing up the hull around where the tube goes through helps, especially fiberglass, ABS, other slick materials. Clean with a solvent like alcohol and dr well.
Lew
Florida, USA
https://www.RCFlorida.org/lmb
Liked by Spence and Doogle and
#10

Prop. Shaft fixing

Epoxy resin or JB weld and make sure you scratch the tube with rough sandpaper
Liked by Spence and Len1 and
#9

Prop. Shaft fixing

Epoxy resin for sealing the prop tube... I use JBWeld for that and much more. Some resins/epoxies don't paint well
JB is the king of two part epoxies (at least fo me).

JBKwick is very good but I take advantage of the longer cure time wit JBWeld. (I also get it the larger tubes, saves a lot of money.)

Lew
Florida, USA
https://www.RCFlorida.org/lmb
Liked by Spence and Doogle and
#8

Prop. Shaft fixing

YES!! it sure does help .
Cheers Colin
Fair winds and calm waters,
COLIN.
Liked by Spence and Doogle and
#7

Prop. Shaft fixing

Thanks Colin.

I don't have 27 MHz or 40 MHz transmitters (now they are all 2.4 GHz, less affected by disturbances). I had them but they were toys.
But I ask you: could a capacitor in parallel and/or inductors in series have been useful for filtering out high disturbing frequencies?
I'm talking about brushed motors.
Liked by Spence and Len1 and
#6

Prop. Shaft fixing

Alessandro, just noticed your comments on the rc interference, old 27mhz and 40 mhz were prone to interference from motors, and also static interference.
But this can be eliminated by earthing the motor body to the stuffing tubes.
Cheers Colin.
Fair winds and calm waters,
COLIN.
Liked by Spence and Doogle and
#5

Prop. Shaft fixing

Evening all.
I agree….Can’t go wrong with epoxy resin.👍👍
Regards
Bill
Never give up.It will come right in the end.
Liked by Spence and Doogle and
#4

Prop. Shaft fixing

Hi Spence.

I can tell you how I did it, but I don't know if my method is the best.

Now, since I know Colin used resin and Doogle agrees, I think my method is valid because I used resin too.
I think they have experience to spare.

There are some differences though.
I didn't buy the complete propeller shafts, because there weren't any in the size I needed. So I made it with rods, tubes and micro-bearings.
Only the external cylindrical aluminum casing is fixed with resin and can no longer be removed (unless breaking the hull). The threaded brass axle, the micro-bearings and the spacers can be removed.

Regarding the question of alkaline batteries, I probably didn't understand the question well. In that case, sorry.
Usually it's the answers from other modeling sites that make me understand the questions better.
However, I don't think the disturbances on the RC are caused by the type of battery. If this were the case, for me it would be new, interesting information and certainly worthy of further investigation.

Unfortunately I no longer have the oscilloscope available to do targeted tests.

To minimize the vibrations of the propeller shaft (if that's what you mean) I dampened the engine, but above all I took great care to perfectly align the motor shaft with that of the propeller. Logically the axles must be perfectly straight.
Liked by Spence and Doogle and
#2

Prop. Shaft fixing

I always fix my shaft tubes in with epoxy resin glue. A slow setting one is best as it will bond better. Once set it can be sanded and painted.
Cheers Colin.
Fair winds and calm waters,
COLIN.
Liked by Spence and Len1 and
#1

Prop. Shaft fixing

What is the best way of sealing a prop. shaft to the hull guys? I was thinking of using waterproof filler or is some flexible filler the way to go? Just thinking of possible vibration. Also my elec. rig is using AA alkalines at the moment. I read somewhere that RC receivers don't like them. As always thanks for your replies, Spence
Liked by Len1 and Rogal118 and

Sign in to add to this thread.

Delete this post?

It will be removed from the site.

Discard this draft?

Your draft will be deleted and cannot be recovered.

You have an unfinished draft

What would you like to do with it?