Today's Message Index:
----------------------
1. 04:23 PM - Speed for M-1 (Larry Westbrook)
2. 05:09 PM - Rocket fuel pressure (u2nelson)
3. 05:26 PM - Re: Speed for M-1 (Aaron Villery)
4. 07:16 PM - Re: Speed for M-1 (Aaron Villery)
5. 07:31 PM - HPAI - High Performance Experimental Aircraft (Larry Westbrook)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Rocket-List message posted by: "Larry Westbrook" <larmec@sowega.net>
Hi Rocketters,
I build a RV-9A from a slow-build kit, took 2 years and have now flown it 335
hrs. in 2 years. My question is about
the M-1 speedcruiser that Mark thinks he will be selling the quick-build kit for
in July 2004. Do you think it would be wise
to buy one of the first kits or should I wait a little while they work out the
bugs. I would like to keep it simple and use a stock O-540 with fixed pitch prop.
Are there any rockets with that combo? What can I really expect for climb
and top speed wide open?
Thanks,
Larry N15LW
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
"Rocket-List matronics" <rocket-list@matronics.com>,
"Mlfred@aol. com" <Mlfred@aol.com>
| Subject: | Rocket fuel pressure |
--> Rocket-List message posted by: "u2nelson" <u2nelson@prodigy.net>
I have a question for all you smart Rocket pilots/mechanics out there.
First the back ground; I have Airflow performance fuel injection with
Airflow electric pump. I'm normally seeing about 18-22 PSI with engine
driven pump (old style with cam driven diaphragm, not the newer gear driven
one) and 22 PSI with engine pump and electric pump running together. I also
have two fuel filters, one on each tank.
This was on a cold, humid day, right after take off, so I'm certain it was
not vapor lock, but what I saw was the fuel pressure slowly fluctuate down
to about 14 PSI, and then slowly back to the usual 18-22 PSI. Cycle time
approximately 5 seconds to get to 14 PSI, then 5 more to return to 20. I
switched tanks thinking I might have a blockage, but the slow fluctuation
continued. I switched on the electric pump, and the pressure steadied up at
22 PSI. Engine was purring like a kitten whole time. Satisfied I was not
about to flame out, I flew with the electric pump off, for the next hour at
various power settings, watching the fuel pressure like a hawk and after
about 1/2 hour this fluctuation cycle got further and further apart
eventually stopping, stabilizing at the usual 18-22 PSI. The last half hour
was like the previous 140 hours, reasonably steady pressure of 18-22 PSI.
Does anyone know what caused this, and should I be concerned? Is my
mechanical engine pump starting to go, or could it have been water? dirt?
air? or what?
Thanks in advance for any insight.
Greg Nelson
N144X
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Speed for M-1 |
--> Rocket-List message posted by: "Aaron Villery" <Scudrunr@maine.rr.com>
What is an M1 supposed to be like? I haven't heard of it before.
Aaron Villery
F1 Rocket SN#138
----- Original Message -----
From: "Larry Westbrook" <larmec@sowega.net>
Subject: Rocket-List: Speed for M-1
> --> Rocket-List message posted by: "Larry Westbrook" <larmec@sowega.net>
>
> Hi Rocketters,
> I build a RV-9A from a slow-build kit, took 2 years and have now flown
it 335 hrs. in 2 years. My question is about
> the M-1 speedcruiser that Mark thinks he will be selling the quick-build
kit for in July 2004. Do you think it would be wise
> to buy one of the first kits or should I wait a little while they work out
the bugs. I would like to keep it simple and use a stock O-540 with fixed
pitch prop. Are there any rockets with that combo? What can I really expect
for climb and top speed wide open?
> Thanks,
> Larry N15LW
>
>
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Speed for M-1 |
--> Rocket-List message posted by: "Aaron Villery" <Scudrunr@maine.rr.com>
I found the speeds you were looking for and also I answered my own question.
The top speed should be around 230 kts and the cruise at 75% around 210 kts.
Those numbers seem to be a little high to me. I got this info from
http://www.hpa-international.com/proj_speedcruiser.html
----- Original Message -----
From: "Aaron Villery" <Scudrunr@maine.rr.com>
Subject: Re: Rocket-List: Speed for M-1
> --> Rocket-List message posted by: "Aaron Villery" <Scudrunr@maine.rr.com>
>
> What is an M1 supposed to be like? I haven't heard of it before.
>
> Aaron Villery
> F1 Rocket SN#138
> ----- Original Message -----
> From: "Larry Westbrook" <larmec@sowega.net>
> To: <rocket-list@matronics.com>
> Subject: Rocket-List: Speed for M-1
>
>
> > --> Rocket-List message posted by: "Larry Westbrook" <larmec@sowega.net>
> >
> > Hi Rocketters,
> > I build a RV-9A from a slow-build kit, took 2 years and have now flown
> it 335 hrs. in 2 years. My question is about
> > the M-1 speedcruiser that Mark thinks he will be selling the quick-build
> kit for in July 2004. Do you think it would be wise
> > to buy one of the first kits or should I wait a little while they work
out
> the bugs. I would like to keep it simple and use a stock O-540 with fixed
> pitch prop. Are there any rockets with that combo? What can I really
expect
> for climb and top speed wide open?
> > Thanks,
> > Larry N15LW
> >
> >
>
>
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | HPAI - High Performance Experimental Aircraft |
--> Rocket-List message posted by: "Larry Westbrook" <larmec@sowega.net>
This is the M-1 I'm thinking about building. Training wheel in front.
Larry
http://www.international-hpa.com/products.html
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|