RE: 1/8 scale functional Hamilton Standard hub for RCV SP engines.

RE: 1/8 scale functional Hamilton Standard hub for RCV SP engines.
View related threads: (in this forum | in all forums)

Logged in as Guest

Users viewing this topic: none

Printable Version

Mustang Exhaust - Kit
Seller: tony-howard
Details: $35.00 | 9/21/2008 | Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> RE: 1/8 scale functional Hamilton Standard hub for RCV SP engines.

Page: << < prev 1 2 3 4 5 6 [7] 8 9 10 next > >>

Login

Message

<< Older Topic Newer Topic >>

RE: 1/8 scale functional Hamilton Standard hub fo... - 5/8/2008 9:14:58 PM

Juice

Posts: 852
Joined: 2/12/2002
From: Richmond Hill, ON, CANADA
Status: offline

Ken... You're in. Just out of curiosity, what airplane and engine are you planning to use the hub on? I remember reading about your Kyosho Corsair. Is the hub for that? Which engine?

Josh

(in reply to Skaweee)

Post #: 151

RE: 1/8 scale functional Hamilton Standard hub f... - 5/8/2008 11:18:39 PM

SCALECRAFT

Posts: 1406
Joined: 1/7/2002
From: MONTEBELLO, CA, USA
Status: online

Hi All

i thought I would post some info on my RCV 120SP powered VQ hurricane. I flew it with a 2 blade 15x14 wood blade. No cowl,no spinner. The engine ran well, idle was low and perfect.

in flight the muffler came loose from vibration, notorious for this, and the engine quit due to no pressure. Ok my fault.

So i slope soared the model in. the prop broke and the plastic back plate took a little hit. Not bad, however I noticed the crank was now binding against the cylinder drive gear. Nothing broken, just a gear clearance problem. I'm sure I can disassemble and reset the clearance with some patience.

From what I have seen in the past, the RCV seems a bit fragile on the frontal impact compared to a conventional direct drive engine.

So be careful with blade strikes and hard nose overs.

Steve

(in reply to Juice)

Post #: 152

RE: 1/8 scale functional Hamilton Standard hub f... - 5/9/2008 12:30:31 AM

snurckle

Posts: 91
Joined: 4/30/2008
From: New Bern, NC, USA
Status: offline

Scalecraft - good to know, just means I have to be more careful.

All who have built the TF 1/8th scale Corsair - What is the distance from the Prop nut to the ground when the plane is level - and not on the tailwheel? Just curious whether an 18" blade will be too big for the plane, or if I should consider the RCV 90 with a 16" prop.

I'm currently building a list of all the mods I have seen on the corsair, and when I get home (on Saturday), I'm going to go through the manual with a fine tooth comb, and put stickies in it, showing where I need to consult the mods. The kit arrived at home today, the wife was sure to let me know- conversation went something like - "What the h!@#, yada yada yada" I tuned out after the h@#$, and simply said "So, I take it the plane arrived in the mail". -That didn't go over so well. I'm away TAD/TDY right now, but will be able to get to work on it Saturday....after I build the table to build the kit.

I'll probably still put the RCV120 in it....not like I have to decide any time soon, but I have allocated the funds for the hub, so I'm definately tied in to one of the two engines.

(in reply to SCALECRAFT)

Post #: 153

RE: 1/8 scale functional Hamilton Standard hub f... - 5/9/2008 2:23:56 AM

77chickenhawk

Posts: 107
Joined: 9/8/2006
From: Clovis, CA, USA
Status: offline

i think 19.5 inch is scale for a 60 size corrsair. based off areotechs site. just dont strike the prop..

http://www.aerotechmodels.com/static.htm

(in reply to snurckle)

Post #: 154

RE: 1/8 scale functional Hamilton Standard hub f... - 5/9/2008 3:08:47 AM

Skaweee

Posts: 17
Joined: 3/23/2005
From: Stafford, VA, USA
Status: offline

Josh, the hub may get used with the Kyosho indeed, with an RCV90-SP and the 16" blades. With a wingspan of 58-1/2", it's not a lot smaller than a 60 sized corsair. Still, the 16" Solo-Prop blades may look a little fat and stubby for this size airplane. Most likely, I'll use a KMP 16 X 13 Signature Prop with that model:

http://www.kmp.ca/product_info.php?cPath=27_31&products_id=177&osCsid=5b0b52a4f6b4c647277b5980d90d4a50

I was originally planning on using the RCV60-SP and 16 X 10 3-blade Master Airscrew, but I think I want to go with a little more power.

I do have a Royal Corsair 60 kit as well as a Marutaka Corsair 60 kit, at least one of which will be built some day. The hub will certainly be used on this build with the 120-SP and 18" blades if possible.

Ken

(in reply to 77chickenhawk)

Post #: 155

RE: 1/8 scale functional Hamilton Standard hub f... - 5/9/2008 6:02:02 AM

Juice

Posts: 852
Joined: 2/12/2002
From: Richmond Hill, ON, CANADA
Status: offline

Steve... I've only had one hard blade strike when my TF Corsair crashed. The engine got really dirty, but no damage. I have had plenty of nose overs. Especially on the H9 Corsair which has a very stiff tail gear that will make the tail bounce high on any little bump. I have never used a wood prop. The composite props leave a big divets in the grass, but engines (RCV 60 and 90SPs) are always fine. But I agree, with the big props the RCV's turn, you always have to very careful about prop strikes and nose overs. RCV makes the worst mufflers in the industry!

Ken... I've flown the 1/8th scale TF Corsair with the 90SP and APC 18x12 2-blade props. It had Robart retracts and struts. There is plenty of ground clearance with 18" props, even on grass runways.

Josh

(in reply to Skaweee)

Post #: 156

RE: 1/8 scale functional Hamilton Standard hub f... - 5/11/2008 8:27:41 PM

HellcatAce

Posts: 168
Joined: 9/27/2005
From: Castaic, CA, USA
Status: offline

So...if for no other reason than a bump, have you done any flight testing yet?

_____________________________

Fly scale planes scale...really, it looks better.

(in reply to Juice)

Post #: 157

RE: 1/8 scale functional Hamilton Standard hub f... - 5/12/2008 5:10:20 AM

Juice

Posts: 852
Joined: 2/12/2002
From: Richmond Hill, ON, CANADA
Status: offline

HellcatAce... No test flight yet. I've been wanting to do it for almost 2 weeks now. But instead, I've been struggling trying to get a good idle on the engine. It turns out the fuel that I just taken out of storage was bad. Actually I think it was bad before I put it in storage, which is the reason why I put it in storage in the first place.

Anyways, just this morning, I used a fresh jug of 15% Coolpower and I'm now getting a nice reliable idle at 1600 RPM with the APC 15.75x13 3-blade prop. I may have been able to get it lower, but I ran out of time to fiddle around with it. 1600 RPM is low enough I think. Now I can do a test flight with the hub.

The test flight is the last thing I need to do before I feel comfortable placing the final CNC order and selling the hubs. I hope to do it this week. I'm very sorry for the delay.

Josh

< Message edited by Juice -- 5/12/2008 5:31:07 AM >

(in reply to HellcatAce)

Post #: 158

RE: 1/8 scale functional Hamilton Standard hub f... - 5/14/2008 2:48:43 PM

Juice

Posts: 852
Joined: 2/12/2002
From: Richmond Hill, ON, CANADA
Status: offline

The Test Flight

I finally did the test flight. As you can see from this video, the hub performed well. The pilot was a little rusty.
First Flight with the 1/8 scale Hub

Here are some details...

1) On May 5, the last thing I did with the hub was to bolt on 16" props set to 11" pitch do to an RPM test (Post #: 141). I have removed and re-installed the hub from the airplane (a few times), but the props had always remained bolted into the hub. This detail is good to know, because it's nice that you don't have to set the pitch every time you mount the prop. Once you find the right pitch for your setup, there's no reason to take the assembly apart.

2) Fuel used: Coolpower, 15% nitro. I could get a nice reliable idle with this fuel.

3) Not shown in the video, I started the engine with a chicken stick. My electric starter had the wand, but I have no access to the starter bolt with the cowl on (the typical rubber cut was at home).

4) I had two prop strikes. Once on a nose over during the taxi out. Another on my hard landing. After each time, I checked that the props and hub didn't break. They didn't.

5) I was a little nervous. I kept the flight short. I forgot to do a loop and a vertical manouver.

I am very happy with the performae of the hub and props. Both in the air and on the unfortunate ground strikes. Actually, the prop strikes are a blessing in disguise, becuase it proves tha the hub and props are robust.

Josh

(in reply to Juice)

Post #: 159

RE: 1/8 scale functional Hamilton Standard hub f... - 5/14/2008 3:07:08 PM

Juice

Posts: 852
Joined: 2/12/2002
From: Richmond Hill, ON, CANADA
Status: offline

I forgot to say what next.

I feel comfortable now to place the final CNC order. I'll give the last few undecided people until Friday May 16 to decide.

I need to the Tru-Turn dome spinners and the 6-32 socket head cap screws.

For those that have signed up for a hub, you need to order your props and extension bolt from Soloprops (http://www.soloprops.com). Make sure you instruct Carl of Soloprops to combine the order with the others to ship to me. Also let me know what you ordered so I know how what is yours when the order arrives.

I will give each of you a bill after I've paid for everything first and divided the costs. I will ship your package when I receive your funds.

Question to all: How do you prefer to make the payments? I prefer Paypal, but I'm flexible.

Josh

(in reply to Juice)

Post #: 160

RE: 1/8 scale functional Hamilton Standard hub f... - 5/14/2008 8:56:43 PM

Rocketman612

Posts: 2065
Joined: 1/19/2002
From: Enterprise, AL, USA
Status: offline

Josh,
Way to go. Knew the Coolpower 15 would be good. Looks like the wheel dug in at touchdown??

Glad nothing broken. She fly's great.

Pete

_____________________________

"Remember, all im offering is the truth, nothing more..."
Morpheus

(in reply to Juice)

Post #: 161

RE: 1/8 scale functional Hamilton Standard hub f... - 5/14/2008 9:23:49 PM

Skaweee

Posts: 17
Joined: 3/23/2005
From: Stafford, VA, USA
Status: offline

Boy, that looks great!

I have the funds for the hub, but not so sure I can swing the blades etc. from Solo-Prop at this time. Do you have to make adjustments to fit the blades? If so, I'll find a way to scrape together the $ for the blades. If not, can I just purchase the hub for now? PayPal would be perfect for me.

Ken

(in reply to Rocketman612)

Post #: 162

RE: 1/8 scale functional Hamilton Standard hub f... - 5/14/2008 9:58:20 PM

Juice

Posts: 852
Joined: 2/12/2002
From: Richmond Hill, ON, CANADA
Status: offline

quote:

Do you have to make adjustments to fit the blades?

No.

My hub is like the original Soloprop hub in that all blade sizes and shapes will fit in any hub. This was good when I was experimenting with 16" and 18" props (someone will have to experiment with 18" and 20" props for their RCV 120SP). It will be especially good if you have a worse landing than mine and break a prop. Just unbolt, take out broken prop, put in a new prop.

That brings up another point. Now that I know that 16" props is the right choice for the RCV 90SP, I'm going to buy extras in case a prop does break. Then I don't have to wait for a shipment to get flying again. You guys should consider this also.

quote:

If not, can I just purchase the hub for now?

Yes.

(in reply to Skaweee)

Post #: 163

RE: 1/8 scale functional Hamilton Standard hub f... - 5/14/2008 11:06:16 PM

snurckle

Posts: 91
Joined: 4/30/2008
From: New Bern, NC, USA
Status: offline

Ouch on the landing...

I need to make a better decision on the engine here, and I think that's going to require a better test. The video shows two nose overs, and while the taxi may have been caused by something other than the prop and hub combination, I can't make a good decision whether the 18" prop would be a good choice.

I do know - I'll be buying this hub, and I will not be purchasing the props until later on.

I will send you a pm about payment.

(in reply to Juice)

Post #: 164

RE: 1/8 scale functional Hamilton Standard hub f... - 5/15/2008 6:52:54 AM