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-   -   Ultrsport 60 and Retracts (http://www.rcuniverse.com/forum/kit-building-121/9292040-ultrsport-60-retracts.html)

EscapeFlyer 11-30-2009 12:26 PM

Ultrsport 60 and Retracts
 
I have a question- but first, an explanation for this post.

I am ready to install my retracts. I have two gears to choose from. I am stuck.

I have pnuematic retracts which I know are not the best choice, but it is what I have and do not have extra money in the building budget to purchase mechanicals, so I wish to use what I have.

Has anyone else installed pneumatics in their Ultrasport and can I see how you mounted the tank?

I have Robart 605's and offset Century Jets (originaly meant for my TF P-51B). Would the CJ's be to gawdy and bulky for this airplane?

If I use te Robarts, I don't have the equipment to bend the axles, would these work:

[link]http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXK183&P=0[/link]

Brian

MinnFlyer 11-30-2009 12:35 PM

RE: Ultrsport 60 and Retracts
 
Those will work.

As for the tank, I would mount it behind the wing opening.

prgonzalez 11-30-2009 05:35 PM

RE: Ultrsport 60 and Retracts
 
I used the GP ones, not that expensive

[link]http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXUY33&P=7[/link]

matadco 12-01-2009 04:58 PM

RE: Ultrsport 60 and Retracts
 
Every one has their own opinion on retraacts especially mechanical vs. pneumatic. Personally I prefer the mechanical. Cost is considerably less plus don't have to mess with installing the air tank, control valve, servo and air lines running all over the place. Plus don't have to air upto fly, just plug in and go. Mechanical including servo about $50 total as opposed to pneumatic (air) at upwards of $200. I have mechanicals in my us which work just fine, even on grass field. I have a Kaos and Curare with airs which are a pain, espceially when the air leaks off while in the air.

Eganwp 12-01-2009 06:29 PM

RE: Ultrsport 60 and Retracts
 
Hey guys,

I'm going to be starting my first kit build in the next couple nights, and would like to see what you recommend for tail dragger retracts on the US 60? I need some sturdy ones that wont bend on a bumpy grass runway!

I found these: [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXMJJ9&P=7]http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXMJJ9&P=7 [/link] Are they heavier duty than the great planes ones?

Minnflyer said they should work, but he also found these: [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=HAN242011]http://www.horizonhobby.com/Products/Default.aspx?ProdID=HAN242011[/link]

He said he liked them a lot and only downside is they each require their own retract servo. I'm leaning towards these if they'll fit in the wing on the US 60.


Anyone have any experience with either of these?

Thanks!
Eganwp

MikeL 12-01-2009 06:43 PM

RE: Ultrsport 60 and Retracts
 
I fly from a somewhat uneven grass field. It hasn't been rolled in years, if ever. It's not bad, but I've seen it eat cheap mechanical retracts for lunch. Who wants to dink around with bending wires each flying session? I've got a pair of Lado retracts that will go into a US60 when I get around to building it. The Lados are a work of art!

MinnFlyer 12-01-2009 08:13 PM

RE: Ultrsport 60 and Retracts
 
A bumpy grass runway is not so hard on retracts as it is on the wire gear.

I ususally use 3/16" wire but it will still get bent up after a few flights. If you really want sturdy gear, I really like the Robarts struts, but they are not cheap

*JCB* 12-01-2009 08:41 PM

RE: Ultrsport 60 and Retracts
 

Quote:

ORIGINAL: Eganwp

Hey guys,

I'm going to be starting my first kit build in the next couple nights, and would like to see what you recommend for tail dragger retracts on the US 60? I need some sturdy ones that wont bend on a bumpy grass runway!

I found these: [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXMJJ9&P=7]http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXMJJ9&P=7 [/link] Are they heavier duty than the great planes ones?

Minnflyer said they should work, but he also found these: [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=HAN242011]http://www.horizonhobby.com/Products/Default.aspx?ProdID=HAN242011[/link]

He said he liked them a lot and only downside is they each require their own retract servo. I'm leaning towards these if they'll fit in the wing on the US 60.


Anyone have any experience with either of these?

Thanks!
Eganwp
[link=http://stores.3dxhobbies.com/-strse-3336/Mechanical-Retracts/Detail.bok?category=]http://stores.3dxhobbies.com/-strse-3336/Mechanical-Retracts/Detail.bok?category=[/link]

get these...totally worth the price, and allegedly designed by MinnFlyer [8D]

I use them in my US40 and am going to pick up a set for the US60 i'm about to build...



MinnFlyer 12-01-2009 08:46 PM

RE: Ultrsport 60 and Retracts
 
Cool, I didn't think Paul was still making them.

The guy who designed them is a little weird though :D

RCKen 12-01-2009 09:32 PM

RE: Ultrsport 60 and Retracts
 

Quote:

ORIGINAL: MinnFlyer

The guy who designed them is a little weird though :D
Now there is an understatement!!!!!! http://www.rcuniverse.com/forum/js/f...wink_smile.gif

Ken

Oly 12-01-2009 09:50 PM

RE: Ultrsport 60 and Retracts
 
I'll second the 3dx retracts. I've got them in my US 60, with 3/16" struts and they work great. I haven't been able to locate them on the 3dx website lately and I also thought they might have quit making them. I'll follow the link above and see if I've just not been looking in the right place.

Oly

GhostRider32 12-01-2009 10:09 PM

RE: Ultrsport 60 and Retracts
 

Quote:

ORIGINAL: MinnFlyer

Cool, I didn't think Paul was still making them.

The guy who designed them is a little weird though :D
Minnflyer,

Do those take 1 or 2 retract servos for a pair?

EscapeFlyer 12-01-2009 10:43 PM

RE: Ultrsport 60 and Retracts
 

Quote:

ORIGINAL: Eganwp

Hey guys,

I'm going to be starting my first kit build in the next couple nights, and would like to see what you recommend for tail dragger retracts on the US 60? I need some sturdy ones that wont bend on a bumpy grass runway!

I found these: [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXMJJ9&P=7]http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXMJJ9&P=7 [/link] Are they heavier duty than the great planes ones?

Minnflyer said they should work, but he also found these: [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=HAN242011]http://www.horizonhobby.com/Products/Default.aspx?ProdID=HAN242011[/link]

He said he liked them a lot and only downside is they each require their own retract servo. I'm leaning towards these if they'll fit in the wing on the US 60.


Anyone have any experience with either of these?

Thanks!
Eganwp

I am wanting the Horizon Hobbies set up. But I am going to use what I have. At least for this week

I hope I can set them up without the hassle of the leaks.

Brian

sled 12-01-2009 11:05 PM

RE: Ultrsport 60 and Retracts
 
1 Attachment(s)
Eganwp:

I'am also building a US60. The Hanger 9 Retact Gear you found will fit nicely in the wing. The JR Sport retact servo RT88 is about $25 here in the great white north. The retacts seem well designed, and the spring load struts with trailing link are heavey duty, so for about $70 a wing I should have a nice retact setup. Just make sure you follow MinnFlyers suggestion & move the retacts out one bay. Heres a couple of picks of my trail retact setup. :)


MinnFlyer 12-01-2009 11:09 PM

RE: Ultrsport 60 and Retracts
 

Quote:

ORIGINAL: GhostRider32

Minnflyer,

Do those take 1 or 2 retract servos for a pair?
1 servo will work both gear

sled 12-01-2009 11:18 PM

RE: Ultrsport 60 and Retracts
 
MinnFlyer:

You are most likely correct oh ....... Ultra Sport master :D. These reacts are out of the new Hanger 9, Blue Nose P51, the servos are designed to mount directly to the extended part of the retact frame, making the linkage exteremly short. But you knew that all ready[sm=49_49.gif] Great suggestion, I'll have to look into that setup on my US60.

Thanks

Sled

Eganwp 12-02-2009 12:33 PM

RE: Ultrsport 60 and Retracts
 
Thanks for all the responses guys!

So in conclusion if I'm reading all the replies correctly, you're all basically saying that both the 3DX retracts and the H9 are about equal in terms of durability and would work well with the US 60 1 bay out? Only downside to the H9 is the use of 2 servos correct?

So I'll need to order 3/16 wire struts to go with the H9 retracts correct, but not the 3DX? Robart 3/16 are the best for this? What length strut do I order? What size are the 3DX struts? It doesn't say on the site. I'm new to this whole retract business!

MinnFlyer 12-02-2009 01:06 PM

RE: Ultrsport 60 and Retracts
 
1 Attachment(s)
A few things worth mentioning...

First, as good as my retracts are, the H-9 ones are better, mainly due to the struts. Now, you CAN use Robart Struts on mine (I did it on my last Ultra Sport) but they cost 40 bucks each, so you'll pay $60 for the units and $80 for the struts ($140) plus a retract servo ($ 28 - $50). Going with the RT88 servo, you've got $168

The H-9 retracts are $94. It LOOKS like they come with struts (which would be really cool). If that is the case, you'd have the price of the units, plus 2 servos for a total of $150.

The only down side to the H-9 units are that you will need to create a door to cover the servos with

GhostRider32 12-02-2009 03:23 PM

RE: Ultrsport 60 and Retracts
 
I'm just gonna have to build me one of these US .60's someday........

MinnFlyer 12-02-2009 03:41 PM

RE: Ultrsport 60 and Retracts
 
Everybody should own at least two! :D

RCKen 12-02-2009 03:46 PM

RE: Ultrsport 60 and Retracts
 

Quote:

ORIGINAL: MinnFlyer

Everybody should own at least two! :D
And have two kits in reserve just in case you crash one!!!!! http://www.rcuniverse.com/forum/js/f...wink_smile.gif

Ken

Eganwp 12-02-2009 04:56 PM

RE: Ultrsport 60 and Retracts
 
Quote:

ORIGINAL: MinnFlyer

A few things worth mentioning...

First, as good as my retracts are, the H-9 ones are better, mainly due to the struts. Now, you CAN use Robart Struts on mine (I did it on my last Ultra Sport) but they cost 40 bucks each, so you'll pay $60 for the units and $80 for the struts ($140) plus a retract servo ($ 28 - $50). Going with the RT88 servo, you've got $168

The H-9 retracts are $94. It LOOKS like they come with struts (which would be really cool). If that is the case, you'd have the price of the units, plus 2 servos for a total of $150.

The only down side to the H-9 units are that you will need to create a door to cover the servos with
Thanks Minn. That's helps a lot with the clarification. :) I honestly cannot wait to get this kit in the air. Ken how many US kits do you have stored away anyhow? It's gotta be 5+ at this point. ;)

RCKen 12-02-2009 06:16 PM

RE: Ultrsport 60 and Retracts
 



Quote:

ORIGINAL: Eganwp
......Ken how many US kits do you have stored away anyhow? It's gotta be 5+ at this point. ;)
<span id="1259795840114S" style="display: none">

6 full US60 kits. 2 short kits of the US60 cut from RCMplans. and the RCMUltra Sport 60 pllanes

4 Ultra Sport 1000 kits as well

Ken</span></p>

Eganwp 12-02-2009 06:34 PM

RE: Ultrsport 60 and Retracts
 
Minn, I just confirmed with Sled (thanks Sled!) that they do include the spring struts, all mounting hardware, etc. Everything you need other than the 2.5" wheel! Sounds like an excellent buy. I think I'm going to try these out on my build. BTW, Sled your pictures of them in action on the US 60 rock!

MinnFlyer 12-02-2009 06:38 PM

RE: Ultrsport 60 and Retracts
 
Yea, I've used these twice now - On the P-51 Bluenose, and on the H-9 P-47 that I reviewed a few years ago and they are outstanding


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