Potentially Dumb Question

NAR29996

Well-Known Member
Joined
Jan 20, 2009
Messages
701
Reaction score
18
Location
Melbourne, FL 32901
Is there any reason why a Quest B6-4 would NOT work as an upper stage motor? My sense is that it would be fine, but I want to be sure.
 

rstaff3

Oddroc-eteer
Joined
Jan 17, 2009
Messages
11,763
Reaction score
27
The trouble is that the delay would likely, in many if not most cases, be way too short.
 

blackbrandt

That Darn College Student
Joined
Mar 18, 2012
Messages
9,282
Reaction score
50
As long as it has the correct delay for your usage, I don't see a problem.
 

scsager

Slightly burned-out old guy
Joined
Apr 24, 2010
Messages
1,777
Reaction score
76
For maximum altitude most upper stage motors have the longest delay. There is no reason why you can't or shouldn't try the Quest B6-4 in an upper stage.

Absolutely NOT a dumb question. :cool:

Another hint... many folks use the Estes catalog with the Engine charts and thrust curves as a learning tool and reference guide - Even folks that have been flying for a lifetime
 

neil_w

OpenRocketeer
TRF Supporter
Joined
Jul 14, 2015
Messages
14,255
Reaction score
7,660
Location
Northern NJ
If it's a draggy rocket that may be OK, otherwise delay is likely too short. Basically, if the top stage would work on its own with a B6-2, then a B6-4 would have a decent chance of working in two-stage config. If it's an Estes model then you should have their motor recommendations to guide you. What rocket is it?
 

NAR29996

Well-Known Member
Joined
Jan 20, 2009
Messages
701
Reaction score
18
Location
Melbourne, FL 32901
OR suggests that the B6-4 is the best choice for this rocket (Estes Magnum) for the upper stage. I was mostly wondering if the Quest motor can be lit by the lower stage motor.
 

K'Tesh

OpenRocket Chuck Norris
TRF Supporter
Joined
Mar 27, 2013
Messages
20,153
Reaction score
11,107
OR suggests that the B6-4 is the best choice for this rocket (Estes Magnum) for the upper stage. I was mostly wondering if the Quest motor can be lit by the lower stage motor.

There at least two rockets that I'm aware of that are called Magnum. I'm presuming that you are referring to the Estes Magnum Payloader (2032/1422)

25847370174_5f3e1d6d93_o.png
 

BDB

Absent Minded Professor
Joined
Aug 22, 2015
Messages
2,347
Reaction score
627
Just mentioning the classic Estes Magnum always gets K'Tesh and me excited.

I flew plenty of Estes B6-4's in my old one before a CATO that forced me to rebuild the booster and sustainer to run on 29 mm and 24 mm motors. I'm sure the Quest B6-4 won't be a problem.

IMG_0925.jpg
 
Last edited:

jbuscaglia

Rusty-eyed Missile Man
Joined
Jan 25, 2009
Messages
438
Reaction score
12
Location
Hudson, MA
OR suggests that the B6-4 is the best choice for this rocket (Estes Magnum) for the upper stage. I was mostly wondering if the Quest motor can be lit by the lower stage motor.

IIRC, the Chinese-made Quest B6's have a pretty small nozzle diameter. (I'm at work and can't verify that right now.) It may be tougher to get one to stage reliably. The older, German-made ones are probably OK.
 

rstaff3

Oddroc-eteer
Joined
Jan 17, 2009
Messages
11,763
Reaction score
27
If the sim sez a -4 is good, I would use it. I bet the Quest motors will work as an upper stage.
 
Top