Todays Boating

[ashley needhamParticipant @ashleyneedham69188]

I think I had a speed 400 in the mount originally so your inrunner should fit straight on.

it say 6×4 on 3s, so a pair of 5×4’s may be ok..I have a Graupner 4 blade 6×3 prop…or of course my 6 blade ones that look wicked. I have loads of them so you can have one if you want.

SMC models I happen to know have a 4mm shaft prop adaptor with a long thread to accept two props (as used on my Farnham hydro). If buying one can you get one for me as well please!

Ashley

[NoelParticipant @noel26080]

which prop adapter exactly is it from SMC?

[NoelParticipant @noel26080]

have found a leopard on Componentshop, 28mm inrunner, LBP2850, 2050kv… for about 35 quid.

reckon thats also good option?

 

Edited By Noel on 21/11/2019 14:30:23

[Tim CooperParticipant @timcooper90034]

Have you seen the Howes ad in the new mag. Graupner Brushless 300 to 600 size. £14.95. Don't know size though.

Tim

[Dave MilbournParticipant @davemilbourn48782]

Noel

Leopard motors are exceptionally good quality. I have three – all 28mm outrunners.

Chaps

I suspect that 2mm refers to the thread which is a metric 2mm, or M2. It's a bit naughty to imply that the wire itself is 2mm but knowing model manufacturers and suppliers the way I do for as long as I have then it's no great surprise to me! Most of them are either not modellers at all or, at best, not very careful ones.

There are, of course, one or two notable exceptions…..

Dave M

Edited By Dave Milbourn on 21/11/2019 17:29:44

[NoelParticipant @noel26080]

Thanks for the tips. ordered that leopard as it will definitely fit and being an inrunner won't be any fouling or faffing with the engine cowl!

Ashley whats that prop adapter you want for 4mm?

[ashley needhamParticipant @ashleyneedham69188]

Noel. Not sure regarding the adaptor, but the chap at SMC was very helpful and will know which one it is. As you can only fit a small prop I would err on the higher Kv spec, but not necessarily the 3000 plus ones. So saying, mine goes well on the 3700Kv turning a 5.5×3 prop. It may of course go much better on the 2600 with either a pitchier example or two props on the adaptor? In theory more blades would reduce the torquereaction (important when it starts to leave the water!)

I have a selection of smaller props if you want to try stuff out, the only issue is the adaptor shaft size which you have to alter on the prop using (supplied with prop) sized rings.

DM. As I recall the radio active 2mm props didn’t fit my spokes either! But Graupner and others sell 2mm threaded props..can we assume they are really 2mm? It’s a moot point now as I have all 4mm shafts so not an issue.

Ashley

[NoelParticipant @noel26080]

Spoke to SMC. Ordered a couple of 4mm adapters. Long one with threaded bit, and a normal one for me.

[ashley needhamParticipant @ashleyneedham69188]

Hopefully it will not be raining Sunday. I may bring the Walrus down for a test float to see where the wing floats need to be set. It is all plumbed up for motor and rudder…so you never know.

need more paint. In theory I have three that will cover, but I don’t want to be scrubbing the last bits to eke it out. The Matt Humbrol gets that “brushed out” look if applied to thinly.

I am doing the lower hull half in a pale colour and the divide will be a wavy line calling for some artistic brushwork. Underneath the wings I also wished I had smoothed off a bit more as the brush needs to be scrubbed a bit to colour adequately, however the finish here is not so critical.

I also want to get a pair of 7×4 props to double up on, as the motor was drawing 18A on twin 7×5, which is probably a touch high on a 160 watt motor on 3s. 167 watts was being shown on the wattmeter, but does that actually mean the motor was developing 167. Watt? Not sure.

Hobbies Hydro on Sunday as I have a three blade 7×4 prop now and want to try it out. Hopefully the torque reaction will lessen a bit (another question mark!).

Ashley

[ashley needhamParticipant @ashleyneedham69188]

Not so nice here but dry and misty. I will pop over as I do need to float the Walrus to see where the waterline is.

Ashley

[Trevor HollowayParticipant @trevorholloway99134]

Will also be down to assess the modification to the yellow peril.

Would be a shame to waste a fully charged battery or two!

[ashley needhamParticipant @ashleyneedham69188]

Boating marred by fun run and the stuffed car park!

tried three. Blade 7×4 prop on Hobbies hydro with no discernable difference to the 7×3 prop,

Walrus good first outing and showed me what needs to be done to the bottom. At one point is must have hit a small wave and it showed signs of taking off….

Trevor’s yellow peril running very smoothly, appears to need some work to counter torque roll.

Devils toothpick fast but overturned, and had to be expensively rescued by a lander. A few mods also identified for this.

Lastly Woody rower going well barring the steering servo which goes a bit intermittent and may need an operation (servodectomy).

Ashley

[NoelParticipant @noel26080]

Thank you for recovering the toothpick Ashley. The thing about it, is that when its at full chat and riding the prop, the whole things out of the water and its a bit top heavy. As evidenced by the vicious flip when turning at speed. I suspected it might be susceptible to such behaviour but now i know for sure. Needs wider sponsons.

Very interesting that all the electrics had corroded up by the time i got home, even though only in water a few mins. So had to cut all the heat shrink off the receiver and esc and clean them up. Least it floats even when half full of water!

[Richard BarnettParticipant @richardbarnett67129]

Woody has been into surgery tonight and has had a successful servoectomy. He’d like to thank the surgeon and all his well wishers 😘

Ricky ye pirate 🏴‍☠️ (screwdriver and surgical gloves)

[Boiler BriParticipant @boilerbri]

Jif ready for the water. 🤔

[ashley needhamParticipant @ashleyneedham69188]

Brian. That's very tidy indeed! A yacht does not look like a yacht until the masts/sails are on. I presume you have hatch covers somewhere?? Like the colour, a nice pale almost woody colour.

Have been busy with foam, glue, knife and sanding block and produced a set of under hull chine-y bits, and if I say so myself they look jolly good…or at least, I was unsure as how good they WOULD look.

Epoxied in place but not sealed yet as I may want to sand some off after trials, and hardening the surface makes sanding off bits and blending it all in difficult.

I often wonder if anyone has copied any of the weird things I/we make at the pond? Someone said why not produce plans for some of your stuff, but to be honest most of it would read "shape to suit" "blend in" "bend to fit" and so on, combined with any amount of "artistic" modelling, and a plan person presumably wants to simply cut bits out, stick and fill as necessary???

Testing of the Walrus was done with a 3s Lipo but if these mods deliver the goods it may be a 2s is all that's needed.

Off to Addlestone models Friday to get MORE props and paint etc.

Ashley

[NoelParticipant @noel26080]

Ashley, heres yer prop adapter:

Leopard motor arrived too. Very nice. Rated 1000W, dont think it will be breaking sweat turning a 5×3!

[Tim RoweParticipant @timrowe83142]

Brian

Very nice and I expect you are looking forward to the special launch day.

Who made the sails? They look very neat.

Tim R

[Boiler BriParticipant @boilerbri]

A member of the rofwacs club made them for me.

finished her off tonight and tomorrow she goes on the water.

Most club members tape flat hatches on so I am going with that.

I will let you all know how I get on 🍺🤔

[ashley needhamParticipant @ashleyneedham69188]

Noel. 1000 watts !!!! would turn a 15 inch prop let alone a tiddly 5 inch one. You can easily fit two 5 inchers….two 5×5….go for it. 1000 watts !!!!!!!!

Ashley

[NoelParticipant @noel26080]

Mmm seemed big rating for a small motor but thats what it says on the spec

[ashley needhamParticipant @ashleyneedham69188]

You have to wonder sometimes? We will try a wattmeter on it when you bring it for testing and see watts wot.

The maths is scary .. P=I x V, so 1000 / 12 (say, 3s Lipo) is 83A? Power leads must look like car jump leads!

Ashley (Einstein)

[NoelParticipant @noel26080]

Nope they're pretty typical power leads, and thats a good point.

I think it relies on higher voltage to realise full power. Rated up to 8S, and 32A, which equates to 900something watts.

But at 3S and 11.4×32 amp we get 360 Watts which is still plenty.

[ashley needhamParticipant @ashleyneedham69188]

Ah yes…knew I was missing something! Some of these go to big (relatively speaking) volts. I don’t think I have ever seen a 6s let alone an 8s! We have nothing so powerful at Bushy.

Noel you will not develop 360 watts as you are not able to load the motor sufficiently. You may be disappointed when we look at the wattmeter…? But you have plenty enough to spin whatever prop(s) you can fit at the max revs the motor can spin at …2600 x 12 and not be overloaded.

Cant wait.

ashley

[Boiler BriParticipant @boilerbri]

I got to the lake early as the Jif was out for the first time. You know how it is -better check it before everyone arrives.
now I am no expert but in light winds it was pretty nippy so captain Bri was happy.

turn up the experts. Yes nice boat Bri but let’s set it up for you you need to tweak this bend that re adjust the other💥 it sailed worse after they had finished 💨🙄. Now I am not competitive but they are and I just wonder if they have done me a favour or had me up the lagoon🤔

I was retry chuffed though as it did not sink😂

Bri

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