---------------------------------------------------------- Rocket-List Digest Archive --- Total Messages Posted Sun 12/21/03: 5 ---------------------------------------------------------- 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 _____________________________________ Time: 04:23:06 PM PST US From: "Larry Westbrook" Subject: Rocket-List: Speed for M-1 --> Rocket-List message posted by: "Larry Westbrook" 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 _____________________________________ Time: 05:09:17 PM PST US From: "u2nelson" "Rocket-List matronics" , "Mlfred@aol. com" Subject: Rocket-List: Rocket fuel pressure --> Rocket-List message posted by: "u2nelson" 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 _____________________________________ Time: 05:26:49 PM PST US From: "Aaron Villery" Subject: Re: Rocket-List: Speed for M-1 --> Rocket-List message posted by: "Aaron Villery" 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" Subject: Rocket-List: Speed for M-1 > --> Rocket-List message posted by: "Larry Westbrook" > > 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 _____________________________________ Time: 07:16:20 PM PST US From: "Aaron Villery" Subject: Re: Rocket-List: Speed for M-1 --> Rocket-List message posted by: "Aaron Villery" 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" Subject: Re: Rocket-List: Speed for M-1 > --> Rocket-List message posted by: "Aaron Villery" > > 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" > To: > Subject: Rocket-List: Speed for M-1 > > > > --> Rocket-List message posted by: "Larry Westbrook" > > > > 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 _____________________________________ Time: 07:31:56 PM PST US From: "Larry Westbrook" Subject: Rocket-List: HPAI - High Performance Experimental Aircraft --> Rocket-List message posted by: "Larry Westbrook" This is the M-1 I'm thinking about building. Training wheel in front. Larry http://www.international-hpa.com/products.html