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Hub for RASA paddles

Old 07-21-2009, 04:18 AM
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serious power
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Default Hub for RASA paddles

Hi Chad,
Any news re the new hub yet.
When will it be available ??.
Can you give a little detail in the meantime ??.

Brian
Old 07-21-2009, 12:47 PM
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Default RE: Hub for RASA paddles

Hi Brian

They are available now, please get in touch with Mark Byrne he can fill you in!

[email protected]

I plan to post some info, but have been really busy getting everything ready for the Worlds. Just test flying my second model today, and leaving for a contest on the weekend.

A 6 month pregnant wife is not helping either LOL
Old 07-21-2009, 01:32 PM
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Default RE: Hub for RASA paddles

Hi Chad,
Thanks. I will contact Mark.
Best of luck in both comps.
Ah those long dark Canadian winters.

Brian
Old 07-23-2009, 07:37 AM
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Default RE: Hub for RASA paddles

Hi Chad,
I have sent a couple of mails to Mark at the above address.
So far no response.

Brian
Old 07-23-2009, 08:21 AM
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Default RE: Hub for RASA paddles

Hi Brian

There is a contest this weekend for them, I am not sure if he is away at that already and out of internet service!. I will see him tomorrow because I am heading out there for it. Send me an email to

[email protected]

I will be sure he gets it and gets back to you.
Old 07-26-2009, 08:16 AM
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Default RE: Hub for RASA paddles

Does this hub look like the EAST R/C hub? A flat bar with slots for the prop on the end?
Old 07-26-2009, 11:23 AM
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Default RE: Hub for RASA paddles

yes
Old 07-27-2009, 12:19 AM
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Default RE: Hub for RASA paddles

There are many differences between this hub and what east rc is making

The east rc hub was based off a drawing I did a long time ago but was not made to the specifications I had originally intended. The bolts used are #8 and not M4 the material is 6061 and not 7075 and I have no idea what the tolerances are.

The hubs that we are making are made as I want them. They are 4mm larger in diameter. More material removed to reduce the weight. Made from 7075 for greater strength to reduce the chance of the holes elongating which can happen over time with 6061. Also they are produced in a very high end shop that produces mountain bike parts and are specialists in aluminum. This allows us to hit the nominal dimensions to within a half thou which makes for a hub that is very smooth and will not vibrate.



Old 02-13-2010, 01:37 PM
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Default RE: Hub for RASA paddles

Chad,

Any place we can get your hub, to be sent international (Norway) ?

... wanna try on my C50`s...


Thanks
Kjell Olav
Old 02-13-2010, 03:59 PM
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Default RE: Hub for RASA paddles

Hi Kjell,
Try; www.f3aunlimted.com
Chris Moon is the guy behind the name.
Regards.

Brian
Old 02-13-2010, 04:22 PM
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Default RE: Hub for RASA paddles

Thanks Brian,

F3A Unlimited has plenty of the 77mm hubs in stock and the Rasa Mag 1,2,3,5,6,7 folding blade props to go with them.

Chris
Old 02-13-2010, 05:03 PM
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Default RE: Hub for RASA paddles

Hi Kjell,

In Europe the Rasa props and hubs for the folding MAG props are available from Lorenz in Germany:

[link=http://www.f3alorenz.homepage.t-online.de/zb-rc-flug-zubehoer/body-prop-carbon.htm]http://www.f3alorenz.homepage.t-online.de/zb-rc-flug-zubehoer/body-prop-carbon.htm[/link]

[link=http://www.f3alorenz.homepage.t-online.de/index-home.htm]http://www.f3alorenz.homepage.t-online.de/index-home.htm[/link]
Old 02-13-2010, 05:23 PM
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Default RE: Hub for RASA paddles

Hi,
Thats correct, but the NE hub is an upgrade - harder-dia,, change etc !
Old 02-13-2010, 06:30 PM
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Default RE: Hub for RASA paddles

Hi Serious Power,

Just giving us Europeans an alternative

I'm sure Chads hub is first rate, but at least in DK the import taxes on items purchased from outside the EU are rater high, so when possible I look for a european alternative. Lorenz has a new hub available now that looks quite nice.

[link=http://www.f3alorenz.homepage.t-online.de/zb-rc-flug-zubehoer/1301-n.JPG]http://www.f3alorenz.homepage.t-online.de/zb-rc-flug-zubehoer/1301-n.JPG[/link]
Old 02-14-2010, 07:40 AM
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Default RE: Hub for RASA paddles

Hi 'Mola',
That looks great,a big improvement.

Brian
Old 02-16-2010, 06:26 AM
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Default RE: Hub for RASA paddles

Thanks Chaps!

Just what i was looking for!

Now it`s time to find out the Rasa numbers ( dimension/load ). If i understand this correctly, i need to look at the combination : number and size to get the flying caracteristic and load for my C50 14XL... I saw some numbers in an previous post somewhere here,i better do some study ...


Thanks again,
Kjell Olav

Old 02-16-2010, 07:37 AM
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Default RE: Hub for RASA paddles

Promising stuff here...
For the technologically challenged amongst us( me in particular), can anyone state with authority:
which Rasa folding prop will be most similar in performance,to APC 21X14, or 20.5X14?
Old 02-16-2010, 11:11 AM
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Default RE: Hub for RASA paddles

There is no exact comparison to the APC 21x14, but the closest is the 21x15 (I forget the mag #) in my opinion to those two props, but it is still a bit different.

If you are looking for more speed, then the 20.2x17 provides a good alternative.
Old 02-16-2010, 12:09 PM
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Default RE: Hub for RASA paddles

Thank you for the quick reply!
Much appreciated!
Old 02-24-2010, 08:06 AM
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Default RE: Hub for RASA paddles

Simpleton queries:


Does this look correct?
The props can’t fold back-should the spinner backplate be notched to allow some backward movement?
Altrnatively, the blades can be pulled forwards against what seems to be fairly slight frictional resistance . Does this happen in-flight at all?
Old 03-08-2010, 02:54 AM
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Default RE: Hub for RASA paddles

OK,so no replies to previous post-so went out and flew anyway.
First impressionsseems nicevery quiet, adequate performance, smooth, if a little slower than APC21X14and snaps seem easier to control.
Slight worrythe back of the blades have been marked(can't really say grooved,fortunately) by the rim of the aluminium spinner backplate.
What do you think? Could this be a problem in the longer term?
Old 03-08-2010, 03:01 AM
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Default RE: Hub for RASA paddles

I had the same issue with a couple of my spinners. A plastic one I have had grooves that I did end up filing down to allow movement. Seemed to work pretty well, I wouldn't worry about doing if you make sure it's fairly even on both sides of the spinner.

Tom M
Old 03-08-2010, 09:58 AM
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Default RE: Hub for RASA paddles

Thanks for that -I have filed the backplate.
Old 03-08-2010, 10:58 AM
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Default RE: Hub for RASA paddles

Sorry I missed this question!

My models I use the 3.25" TT spinner, and don't notch the backplate at all or do anything to allow any additional rearward movement. The small scores on the prop don't seem to bother them at all, I have flown lots of flights with them like this so I don't think its much of a worry point.

I have ran a slightly larger diameter hub than what is available for sale, that would allow full rearward movement and the prop never hit the fuse So I dont think you should worry about allowing too much movement either!
Old 03-08-2010, 11:14 AM
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Default RE: Hub for RASA paddles

Thanks Chad-that's all very reassuring!
I'm ancient enough to be worried at seeing score marks near the centre of things like props but I guess it's less concerning with a composite material.

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