Budget L1 Rocket

Following on from a discussion on this group under the title 'Ears thanks
and question':

I work to a rule for my mod-rocks that the airframe and recovery gear should
not cost more than the engine. In this thread we can discuss ideas and
progress in the hope it will inspire other model rocket builders to venture
into more powerfull rockets and not be put off by the costs. I might just
crash and burn of course...

We ave selected 38mm engines so the rocket could also be used for level 2
but we will have to see if that needs a budget comparible with the cost of a
L2 reload. The cost of the motor housing has not been taken into account -
if anyone wishes to lend me one for this project that would be great.

The cheepest motor options seem to be:
Congreve 38mm 240s with the range H80, H89 or H160 all costing £14.85

In due course I'll add a section to my web site at
http://hompage.ntlworld.com/halam.rose and www.rosered.co.uk with photos of
the build etc

The budget estimates so far looks like this:

Scroungeable items:
Body tube scrounged from guy in office £free
Nose cone made from cerial packet £free
Parachute made from bin liner - I already have a 27" one flight tested on a
500g rocket which flew on 3Es and survived ejection at significant speed
£free

Cost items:
Shock cord - a hunting we will go £1
I don't know about ejection yet but if it doesn't come with the motor I
budget £2 for a home made timer - but I'm sure I can do better than that
Timer battery £1 - I need to do some research on how the HPR ejection thing
works, if I use motor ejection I expect it will add to the cost of the
motor and so increace my budget...
Fins - hmm better allow a bit here £5 - again I'm sure I can do better - not
done any calculations yet so I dont know what I need.
Epoxy - I'll need a bit I suppose £4
Paint - £1

So lets see how we get on we will know soon enough if this is a vain brag or
not - I'm not sure myself.

BW

Halam



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Relevant Pages

  • Re: Budget L1 Rocket
    ... Doing it all on a tight budget is fine, but I think you shoud put some ... not cost more than the engine. ... We ave selected 38mm engines so the rocket could also be used for level 2 ... The cost of the motor housing has not been taken into account - ...
    (uk.tech.rocketry)
  • Re: Dual Deployment for Close Proximity type Recovery
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