Topic: Aeronaut Queen (Read 7429 times)

SailorGreg · « **Reply #25 on:** April 17, 2020, 10:59:49 am »

Wow. That's going to give you a no-load prop going at over 30,000 rpm. The Queen is a fairly lightweight boat and with a 50mm prop you might find it a tad on the lively side. Here is a Youtube clip of a Queen with short bursts of the sort of performance you might expect. I guess you could always drop down to a 3s battery if things get a little too interesting.

Greg

MartinGough · « **Reply #26 on:** April 17, 2020, 05:38:12 pm »

Hi Greg

Thanks Greg that mad me smile. I have no ideas about motors so
went with overkill so I can drop back and end up with something
that is not stressed, guess thats what I'll end up with!

I have managed to sort the lower skins with ply on edge. I have eased
the opening for the prop shaft and rudder tube. Just waiting on my ordered
motor to finalise and epoxy the prop shaft into the hull. The prop looks very
close in the pictures but is unsupported and was resting in that position.
Wondering about attaching the motor direct or through a universal joint what
are peoples thoughts. Also looking at a replacement rudder rather than building
the one included in the kit.

Regards Martin.

shadysadie · « **Reply #27 on:** April 18, 2020, 07:38:50 pm »

Just for information Martin, I have been running my "Queen" on a Turnigy 3538 1050Kv motor, 50A Hobbyking water cooled ESC and a 48mm. three bladed prop.. Performance on 4S is outstanding - very fast and up on the plane in an instant. Also extremely docile at slow/medium speeds but capable of surprising the "fast electric" boys when the throttle is opened. All in all, a splendid little "Q" craft.

MartinGough · « **Reply #28 on:** April 18, 2020, 08:57:00 pm »

Hi Shadysadie thanks for the info, are you using the original prop shaft. Tried it today
but got bad vibration and after investigating found the shaft slightly bent so going to
replace it with something but not sure what yet.
Fitted one of the spray strips using my steamer to bend it rather than cut it, works a treat.
Realised after glueing that I had not tapered it at the front but managed to do it in situ quite
easily.
Fitted the motor which is probably a massive overkill. Made up a jig to drill the holes for the
motor which has six. I may use it to strengthen the motor mount a little.
Really enjoying building this boat probably be the first of many.

Mark T · « **Reply #29 on:** April 18, 2020, 09:10:40 pm »

Thats a really nice build so far Martin

Lovely woodworking skills this should be a looker when finished

ChrisF · « **Reply #30 on:** April 18, 2020, 09:19:44 pm »

Hi Martin - not the cheapest but I've standardised on the Raboesch Maintenance Free Ball-Raced prop shafts which I get from Cornwall Model Boats.

Chris

MartinGough · « **Reply #31 on:** April 18, 2020, 09:40:25 pm »

ChrisF

I was considering them, which one did you go for length/diameter, prop.
Any pictures of the setup?

Regards Martin.

ChrisF · « **Reply #32 on:** April 18, 2020, 10:11:09 pm »

This is a photo early in the build of the hull for my Fairey Swordsman 33 which at a scale of 1:12 is obviously 33" long. For this I've gone for the 450mm M5 with a 45mm 3 blade prop. I'm also building a 28" Fairey Huntsman 28 in which I'm using the M4 version. The other photo shows the prop shaft dry fitted in my River Queen which is a much smaller boat at 23" and has a much shorter M4 prop shaft.

For your boat it depends on how long the prop shaft needs to be. You need to work it out allowing for the coupling you're going to use and taking account of how far the motor and prop shafts go into it and also how far the thread goes into the prop. It's unlikely you will get the exact length required so get a longer one and cut it down.

For longer prop shafts its better to get the M5, though as said I have got an M4 for the Huntsman 28. I'd already got that though and as Raboesch are good quality and rev to 15,000 in the water I'm not expecting any problems with whip in the shaft.

Hope this helps.

Chris

MartinGough · « **Reply #33 on:** April 18, 2020, 10:47:42 pm »

Thanks for the reply. I was thinking the 450mm 5mm shaft and cut it down slightly
mine is about 390mm. Struggling to see a 45/50mm prop with a 5mm thread.

ChrisF · « **Reply #34 on:** April 18, 2020, 11:39:52 pm »

I got mine from Prop Shop. They will make anything that you want.

Chris

Tugtower · « **Reply #35 on:** April 19, 2020, 01:08:28 am »

I tend to stick with the stainless steel slimline M4 props shafts (Calder craft), no rust, and no green brass and no chipping paint work later to patch up... M4 also allows a much larger range of props without overspending, the queen would want to run on at least a 40mm prop, and x40 if you have the motor power.

I wouldn’t get to involved in ball raced props, their mainly suited to IC engines,(there also a pig to sort out when the races wear, a standard bushed shaft is easy to fix with a rod and hammer..) a good quality brass bushes or stainless shaft will do very well and many many years of use without excessive wear providing you fit Oiler’s or grease the shaft regularly, I tend to only fit Oiler’s on slower boats (lower rpm) anything that’s 12.000 + I pack the shaft with real marine grease. And just change it annually.

Never had a shaft issues with M4’s... had plenty of issues with m2 tho

Good job so far keep up the good work!

ChrisF · « **Reply #36 on:** April 19, 2020, 12:14:24 pm »

Each to his own I suppose. Raboesch say they are for a range of boats, including simple electric ones, sailing boats with auxiliary motors and small steam boats. If they were mainly suited for IC they wouldn't be selling many nowadays.

I like the idea that you don't have to mess around with oil and grease and unless you use the boat a lot the ball-race should last a long time. They say to epoxy the ball-race onto the shaft but I'm not going to do that I'm going to tape it on so that if I need to take it off I can easily.

Bushed ones are tried and tested so no problem going that way if you want to.

As for props if you Google Protean Design it will take you to Prop Shop. I'm a bit confused though as I ordered mine in metric and they are showing in imperial. Must be an old web-site I think as I have an email with a price list in metric.

I've got to contact Simon Higgins to order more props and P brackets so I'll try the email I used a couple of years ago and if successful I'll let you know.

Chris

MartinGough · « **Reply #37 on:** April 20, 2020, 03:27:29 pm »

I've gone for a shaft from the Prop Shop. Spoke to Simon who was very helpful and
helped me choose a 4mm shaft which includes a centre bearing out of bronze.
Found the original shaft slightly bent which was causing lots of vibration and noise.
When stripped it had also been rubbing half way down the shaft and got very hot.

Ive strengthened the engine mount frame with another layer of 2mm ply and painted a
first coat of penetrating epoxy to the inside of the hull. Going to do 3 coats and see how
it looks.

Regards Martin.

ChrisF · « **Reply #38 on:** April 20, 2020, 05:54:42 pm »

Good that you are sorted and that Simon is in operation during this time. I'll give him a ring tomorrow.

Chris

MartinGough · « **Reply #39 on:** April 20, 2020, 06:36:02 pm »

I've really got the boat build bug as I've just ordered a 48" J Class hull to build.
What else can a man do when he's locked up!

MartinGough · « **Reply #40 on:** April 20, 2020, 07:23:49 pm »

First coat of penetrating epoxy and picture showing
engine mount extra ply plate.

Phil22 · « **Reply #41 on:** April 21, 2020, 03:07:17 am »

Making a superb job of it Martin! Really enjoyable to follow along, keep the build photos coming.

MartinGough · « **Reply #42 on:** April 21, 2020, 08:18:15 am »

Cheers Phil will do.

terry horton · « **Reply #43 on:** April 21, 2020, 11:53:42 am »

I built one of these for an old bloke in our village a couple of years ago.... so impressed with the kit build and the look of the boat that my missus bought me one. Problem was the old boy then wanted help with a Perkasa..... a different kettle of fish altogether !

Regards
Terry H

Capt Podge · « **Reply #44 on:** April 21, 2020, 12:01:35 pm »

Hi there Martin, just picked up on your build, looks like you're doing well with it.
A question for you please.
You mention penetrating epoxy - can you tell me which brand you use?

Regards,
Ray.

MartinGough · « **Reply #45 on:** April 21, 2020, 02:35:03 pm »

Hi Ray

I got the recommendation from someone else but the stuff really soaks into the wood.
Its Smiths clear penetrating epoxy I got the warm weather formula.

Regards Martin.

Capt Podge · « **Reply #46 on:** April 21, 2020, 03:58:30 pm »

Thanks for the update Martin, I'll look into getting some to try for a couple of the builds I've got lined up

Regards,
Ray.

MartinGough · « **Reply #47 on:** April 21, 2020, 10:49:35 pm »

I've put some woven fibreglass in the front and rear of the hull. When put
up against a light you could see some light coming through the plywood. Im
sure it would have been ok but thought it would be a good idea just to beef
the hull up a bit. Second coat of penetrating epoxy is looking better so maybe
one or two more coats. Also just ran a bit of finishing epoxy along the keel just
to seal the joint a bit.
Also made a little skiff for my upcoming Bearospace Annie Schooner.

MartinGough · « **Reply #48 on:** April 29, 2020, 10:18:21 pm »

Still on with the build and started on a Aeronaut Bellissima yacht while Im waiting
on a prop shaft from the prop shop. I have given the hull 4 coats of penetrating epoxy
and have now fitted the motor and bought a brass after market rudder.
One thing of note is don't get wood glue on the mahogany as it marks it and when you
try and rub if off the mahogany ends up going lighter in colour.

ChrisF · « **Reply #49 on:** April 30, 2020, 01:19:26 pm »

As others have said, you're making a lovely job of that.

Was going to mention earlier, with the amount of prop shaft sticking out of the hull it needs some support. Does the kit call for a ply fillet? If not, you could use a P bracket like the one shown in my photo. Simon at Prop Shop supplied mine.

Chris

News:

Author Topic: Aeronaut Queen (Read 7429 times)