Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length.

[Pete25]

has anyone got any plans or links on how to build your own drive shaft ?
iv had a search round google but cant seem to find any details step by steps. reason i want to make my own is i cant buy them the size (length) i need so will have to make them

[Netleyned]

http://marksmodelbits.com/

Try this guy

Ned

[Pete25]

would this be ok for the stuffing box if i was to make my own drive shafts with a 4mm m4 rod inside this tube ?
each drive shaft will be 500mm long
http://cgi.ebay.co.uk/Aluminium-Tube-10mm-Diam-x-1mm-Wall-x-500mm-Long-/150337213882?pt=UK_BOI_Metalworking_Milling_Welding_Metalworking_Supplies_ET&hash=item2300cbd5ba

[triumphjon]

contact marks model bits through the link above , he will make the shaft/ stuffing tube to whatever size you require them . very good quality , with stainless steel shafts / tubes & ptfe bearings , all of my powered models are fitted with marks propshafts  ive had no problems with them !

[john s 2]

Of course you could make your own shafts. The hardest job i found was threading the stainless shaft I found
it hard to run a straight thread. Really should have used a Lathe with a toolstock Die holder. At the price Mark
charges it might be better to buy ready made as suggested.
But nothing beats Making your self. John.

[Umi_Ryuzuki]

I drew this on an envelope for a friend, and later scanned it.
I just use brass tubing and shafts, and solder the propellerson the shaft.
 

Also check out Towboat Joe's website "how to..."
http://www.towboatjoe.com/shafts.htm

[RaaArtyGunner]

I drew this on an envelope for a friend, and later scanned it.
I just use brass tubing and shafts, and solder the propellerson the shaft.
 

Also check out Towboat Joe's website "how to..."
http://www.towboatjoe.com/shafts.htm

That is what we need simple and inexpensive.
 

[hopeitfloats]

K&S (brand) make brass tube that i have used in the past. the beauty of theirs is one size fits inside the next size snuggly. not tight but they could be glued or soldered in if you dont have access to a lathe

[andyn]

I think you need to read this thread: http://www.modelboatmayhem.co.uk/forum/index.php?topic=30301.0;topicseen
 

He wants a shaft 20" long. K&S brass tubing? I don't think so.

[hopeitfloats]

i have used it in almost that length. granted it wasnt turning a prop but was a shaft through K&S tube with a reasonable load on it. hey it was just a thought. he doesnt have to do it.

[Pete25]

I've sent an email off to him and waiting on price. I have looked for 19inch long brass tube in 10mm.. no look its very hard to get if not impossible   plus the price would be ridiculous ha ha
reason I choose aluminium.. well ill wait to see what price he charge me and then decide what to do.

[Umi_Ryuzuki]

I can get K&S brass tube that is up to 36" long, but a small diameter shaft will not support itself
for such a long length and may sag inside the stuffing tube.  If I "had" to make shafts that long, then
I would probably assemble two short lengths of stuffing tube, and use the bushing tube as a connector.
At one end of that connector an additional bearing could be soldered in to support the shaft mid tube.

The other option would be to up size the propeller shaft to a diameter that could support itself for 20" and
size up the bearing, bushing and tube from there.

Pete25,

How big or what style of boat are you building that the shafts need to be 500mm long?

Umi

[Pete25]

i just got email back he want £50 for 3 drive shafts.. i can get the parts and make them for less than half that. so im going to make my own i think.. al i need is bushing for each end and put one in the middle to stop whipping. i just dont no were to get them from
my boat is 6ft long hence the 500mm drive shafts. the drive shaft will be supported so the tube wont sag. just dont no were to get the bearing from that will fit inside a 9mm tube...ummm

[wesley]

£50 for 3 drive shafts

£16.66 each for a 20" propshaft too expensive!!???     How much were you expecting to pay????


Personally I don't think that is expensive at all....

Andy..

[RaaArtyGunner]

£16.66 each for a 20" propshaft too expensive!!???     How much were you expecting to pay????


Personally I don't think that is expensive at all....

Andy..

To me it's all relative
     

[Umi_Ryuzuki]

I built a model of the Capitani Romani class Light Cruiser, Atiilo Regolo.

It was 6'- 6" long, and I only needed 12" of stuffing tube to get the shafts from the propeller to where the motors mounted.
The stuffing tubes just need to get the shafts inside the boat. If you allow for a gear, or pulley mount, you can keep the shafts
as short, and level as possible, and run a belt drive down to the shaft. Mine were directly connected to the motors by a u-joint.

[crunchie]

To me it's all relative
     

Relative to?

Well speaking relatively, a 10 inch shaft is £9.99 from ripmax, and he wants a 20 inch shaft. So relatively, a 20" shaft should be double that no? £16.66 isn't bad at all..

While we're at it, got a lathe and a die set? You're gonna need them.

[portside II]

Started building my own shafts and tubes about 5 years ago and still have one of the early ones in my barge ,
had it back in the water over the weekend , smooth and no water ingress.
What's it made from ,
5mm steel rod scrap
12mm steel tube scrap
2 bushes made from the brassy bits from a companion set.
simples .
daz

[Shipmate60]

I am with Umi, 20inch shaft does seem excessive.

Bob

[wartsilaone]

Pete. What are the prop shafts for and why do they need to be so long? The more information you give, the better the answers you will get. Otherwise this topic will take on a life of its own and run away from you. Some photos would be handy.

Kind Regard Ali.

[Pete25]

i have made a quick video showing my 6ft boat with a 4mm drive shaft with propeller on to show why it needs to be 500mm long this should help you help me 
i can make my own stuffing box if i can find a aluminum or any non rusting metal washer that is 9mm wide with a 4mm hole in the centre but i cant find any :(

video

http://youtu.be/9MBklsxrA70

[HS93 (RIP)]

thats a strange angle and place for a prop shaft, but if you have to have it that long go 5mm or have plenty of bearings to stop any whip.

Peter

[Pete25]

i dont no were i can get a 9mm bushing that's the problem i have a 10mm aluminium tube (wall is 1mm thick so inside diameter is 9mm and that does not bend under its own weight .
i just can find anything that is 9mm wide with a 4mm hole in the centre to put at each end and one in the middle. ummm i might have to get someone to custom make me some thick washers..

[wartsilaone]

Hi Pete. Couldn't you have the propshaft coming out of the hull a bit further back? I think most warships have the propshafts angled down quite steeply toward the props, I may be wrong.

[Shipmate60]

Pete,
Your props are way too far forward.
The usual way to fit long warship propshafts is to have "exposed" shafts.
The outer shaft finishes close to the hull but the inner shaft carries on aft, supported in "A" Frames.

Bob