#1
|
|||
|
|||
Estes F15 Engines
So, now we know - The motors at S&T were Estes F15s.... I wonder what these will cost?
I wonder if there will be problems when people try to fly these in heavy models that use composite 29mm motors. I wonder if they will work in the existing Estes 29mm kits - especially the Nike Smoke and Big Red Max? Matt |
#2
|
||||
|
||||
If they are BP or any other low ISP propellant they will only be suitable for lightweight models. The modal delay will be short.
|
#3
|
||||
|
||||
They are black powder, almost full F, but apparently not contest certified?
|
#4
|
||||
|
||||
The F15 is an interesting choice for Estes. Peak thrust is lower than a D12 and avg thrust isn't much higher. I hope this is just a beginning.
Just in case some of you didn't get the NAR email... Quote:
__________________
I love sanding. |
#5
|
|||
|
|||
Any new news is good news in my book. Anyone have any idea what the typical time period is between certification and product in stores? (Not that I've had the chance to fly an E12 yet. But then, that might not be a bad thing.)
__________________
Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Centuri Mini Dactyl Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc Starfighter Scorpion Estes F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II Semroc Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark, Groonie Der V 1/2 |
#6
|
||||
|
||||
Quote:
Thanks for posting the specs. Just seems like a strange motor to market, really. I'd consider that to be a 'hot' E motor really.....just does spec over into F range. What one would use it in other than some min diameter rockets, I'm not sure. Some what like the old FSI F7s........they made good 1/100 scale Saturn V thrust build-up scale launcher motors (two placed in opposing direction in the flame trench of the scale launch pad......looked pretty realistic). Earl
__________________
Earl L. Cagle, Jr. NAR# 29523 TRA# 962 SAM# 73 Owner/Producer Point 39 Productions Rocket-Brained Since 1970 |
#7
|
||||
|
||||
Quote:
The won't get contest certification until they are generally available.
__________________
Bill Spadafora http://www.billsplumbing.com billspad@comcast.net bill@billsplumbing.com |
#8
|
||||
|
||||
Quote:
We haven't got the RASP file done yet but if you pick some numbers off the curve on this sheet and plug them into your favorite simulation program you'll have an answer.
__________________
Bill Spadafora http://www.billsplumbing.com billspad@comcast.net bill@billsplumbing.com |
#9
|
|||
|
|||
Thanks for the info, Matt & Bill.
Scott
__________________
Scott D. Hansen Ye Olde Rocket Shoppe - Your One Stop BAR Shoppe! Ye Olde Rocket Plans - OOP Rocket Plans From 38 Companies! Ye Olde Rocket Forum WOOSH NAR Section #558 |
#10
|
||||
|
||||
Now that this information is out I can add the following. Except for the Mega Dear Red Max these BP F engines fly all of the new Pro Series 2 rockets just fine. I've flown models up to 24 ounces with these engines and they all flew perfect. I know I would NOT fly a 24 ounce model with a D12 but they fly fine on these 29mm BP motors.
John Boren |
Thread Tools | Search this Thread |
Display Modes | |
|
|