CNC prop's

[netik racing]

Im wondering about cnc prop's ....if they are milled im guessing that they are balanced because the blades should be all the same...any info

Cheers

[Boaterguy]

shouldn't it be like that with molded ones too? I think it's that the metal is not consistent not that it is different size.

[Steven Vaccaro]

Where do you find cnc props? Etti?

[pescador]

I'm not 100% positive but I thought Andy Brown at CMDI made CNC props.

[Steven Vaccaro]

He gave it up

[netik racing]

i was more looking at the cheap ones from http://www.r2hobbies.com/eng/proddet...bp3016010_4834 and the venom ones....does anybody know are they ok or are they not worth it????

[netik racing]

ive been doing a bit of reading (not my favorite past time) and it look's like CMDI gave up because the cnc props they were building had to much lift and were breaking blades off... so if somebody was to make cnc props (thinking of trying to get a mate to make me some he owns a cnc shop) would they make them out of maybe stainless and make them very similar to octura specs and maybe they would work ok?????

[Steven Vaccaro]

I know the full cdmi story and blades breaking wasn't the reason. I have a couple of his and they are still great. That's not to say the blades didn't break, because many very high applications did. If you could have them made in stainless that would be great.

[netik racing]

i know you can't flat out copy a prop but if i was to style the prop's blades would you use octura,abc,prop shop or prather....

Just to say to i wasn't putting cdmi down at all....i have 2 of there props left and i love them but only just found out they don't make them anymore...

[sailr]

IF they were made in stainless or even bronze that would be great. Unfortunately, all of the CNC props I have found are aluminum. They are very soft and bend easily. They have also been known to shuck blades.

[Ub Hauled]

I think the Germans make CNC blades of hard metal, apparently they are the props to own these days... lemme double chk on this........
actually, they are laser cut cobalt/steel props...
see here

[Steven Vaccaro]

I think the Germans make CNC blades of hard metal, apparently they are the props to own these days... lemme double chk on this........actually, they are laser cut cobalt/steel props...see here

who is selling them?

[DINO7]

http://www.tenshock-motors.de/Props-...ler-Schraube_1

[egneg]

A while back Meniscus sent me an email with a link to props in the UK unfortunately that PC is dead. They were very nice ready to go but a bit pricey at over $50.00 usd shipped. Hopefully he will see this thread and provide a link.

[dasboata]

Plain and simple in my HO Aluminium is not the right material for props !!!

[lohring]

I don't see why the right machined aluminum alloy wouldn't work. See:
7075 aluminum http://asm.matweb.com/search/Specifi...ssnum=MA7075T6
Berylium copper as cast http://www.matweb.com/search/datashe...da2678b61257ac
Berylium copper age hardened http://www.matweb.com/search/datashe...b9e6792&ckck=1

I've worked with 7075 aluminum. It machines easily and is very strong. Bending it is like bending any hard material; it's hard to bend and cracks easily. That means you can't modify the props by bending and then harden them like the as cast bronze props.

Lohring Miller

[dasboata]

well I don't see the fastest boats in the world running aluminium props, SS is the prefered material,,, and it is for a good reason,,, it is stronger and can be made thinner,, and any Boat that comes from the factory with a alum prop, is for the most part replaced with a SS prop up grade

[lohring]

I believe Joerg's 140 mph hydro ran a prop cast by a dental lab. if so, that material was a cobalt chrome alloy, not stainless steel, an iron alloy with chromium, nickel, and other alloying elements. Stainless steels aren't as corrosion resistant. Both have similar strength, close to twice that of 7075 aluminum.

Lohring Miller

[ray schrauwen]

All the R2 hobbies cnc props come in 4mm bore. They are very nice, top notch machining. I did order one set to my benefit they came in 3/16" bore!!

I ordered one more after and I got 4mm bore...

The HK 32mm & 35mm 3blade props are also beautiful, even nicer than R2 hobbies. These two come in a bit sloppy 1/8" bore.

Thats all I know...

[Boaterguy]

were the HK ones centered on the shaft? I'd be surprised if every one came out perfectly centered, especially from HK.

[netik racing]

so if i was to be able to get some SS prop made what would be a price that people would pay for them....??????

[Grazacind]

A while back Meniscus sent me an email with a link to props in the UK unfortunately that PC is dead. They were very nice ready to go but a bit pricey at over $50.00 usd shipped. Hopefully he will see this thread and provide a link.

Link to the prop shop. http://www.prop-shop.co.uk/

[martin]

Astec Models in the UK has the Etti cnc props, You can also get them from Etti HK on Ebay as well.

[egneg]

Link to the prop shop. http://www.prop-shop.co.uk/

They were not Prop Shop ... I wish I could remember what they were.

[martno1fan]

You can get cnc props here,email him for other sizes and his prices are good too.
http://www.iansboats.co.uk/

[jj2003]

who is selling them?

Ben is selling them. Find them here;

http://fightercatracing.com/index.ph...chk=1&Itemid=1

I beleive they are tenshock but not 100% sure.

[Peter Duggan]

Cobalt Chrome is the best metal available for Model Boat Propellers but I guess I am a bit biased.

Peter

[Alfa Spirit]

I use those props, they are ready to run. For DD 3/16, pitch = 1,42
Those props are light, not strong like Octura and Prather props

[Gimp]

Anybody else using Ben's FC CNC props?

[monojeff]

I have one I will be testing on my elam figured it was another good option compared to the CF props out there.
The one I have is the 443 and if runs well will probably get some of the larger ones from him.
Will not be able to test for a few weeks as I am working on the boat getting it RTR.