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ARCHIVE FOR THE ‘X8 LAUNCHER’
CATEGORY X8 Bungee LauncherPosted: October 25, 2012 in X8 Launcher
1
Hi guys, just a quick thread for my X bungee !auncher"""""##
$ got moti%ated thanks to &ki''erbi!!y and a fe( fai!ed attem't at !aunching !ast
(eekend due to !ack of airs'eed mi)ed (ith torque ro!! s decided $ better make a
!auncher and sa%e a (ho!e (or!d o 'ain :*
$ made it from :
+) 2mm so!%ent ty'e drain 'i'e
+) 2mm so!%ent ty'e e!bo(s
+) 2mm so!%ent ty'e -.s
2m !ength /1 P& (ood
Pack of ten 5 ) 50mm bo!ts
Pack of ten 5 y!on nuts
3) 100mm ) 10mm bo!ts 4 for staking !auncher to the ground *
- brackets from 67
) 38 nai!s
+) 9eyring rings
2) 10m !ength on 10mm 4 b!ue * &i!icon ungee tube
1+#3m y!on ro'e
Pets at Home dog scre( in dog stake
igita! !uggage sca!es
$ dry ;tted the !auncher ;rst to gauge the ang!e $ (anted, you can see be!o( ho(
basic the design is, $ used -.s for each corner for added stababi!ity# !bo(s on the
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to' (ith the front t(o e!bo(s cut do(n and g!ued in '!ace so the (ings do not catch
on the !aunch
$ e)'erimented (ith the (idth (ith the X on unti! $ (as ha''y (ith ho( it sat, ho(
it (as su''orted and a natura! tra%e! u' the ram'
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Once $ (as ha''y $ cut the !egs do(n to a more 'ractica! height and the shorter
!ength makes the !egs sti<er too
e)t $ added the trigger for the bungee re!ease, %ery sim'!e $ (as after#
$t com'rises of t(o - brackets bo!ted to either side of the 'i'e, a bo!t !ocked from
the inside and outside of the brackets to strengthen and kee' the ga' for the (ood
constant# $ dri!!ed a cut 'iece of the /1 and it (i!! 'i%ot on the bracket#
= 38 nai! (i!! be (hat ho!ds the ring in '!ace, cur%ed back(ards so it (ont
accidenta!!y fa!! o<# -he (ood (hen 'ressed do(n on (i!! raise, 'ush the ring o%er
the nai! and re!ease the '!ane#
$ added rubber bands to ho!d the (ood do(n so it can not be accidenta!!y triggered#
$t a!so kee's the (ood square (hen using it#
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-he bungee tube shou!d arri%e tomorro(, so unti! then a!! $ cou!d do (as make u'
the ny!on end#
One ring, the re!ease ring go to the trigger, the second rig goes to the '!ane# oth
rings (ere connected to the ro'e by using ;shing knots# $ used the tucked b!ood
knot, (orks %ery (e!!#
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>ery neat knot, (hich $ !eft a tai! hanging from, the heatshrink ed the tai! to neaten
it u' a bit more as abo%e#
-o connect the t(o !ines to each other $ used the 5 turn (ater knot, again %ery
strong but (ith ro'e, a!so %ery neat too
-he idea being that (ith both hooks on, both the re!ease ring and the '!ane ring (i!!
both be under tension so no nasty shock !oad goes to the '!ane (hen $ trigger the
re!ease# $t (as 'retty easy to do by using the (ater knot#
&o the '!ane end !ooks !ike this :
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$!! u'date (ith bungee end (hen it turns u', then either some a(esome or tota!!y
hi!arious !aunch %ideos :*
Ok""""## bungee tube came today :*
$ came u' (ith my o(n %ersion of making the ends o< of the bungee tube# &o far 1
tried, $ 'u!!ed and 'u!!ed and it (ou!d not come a(ay
$ got some ?i!ko scre( eyes, %ery strong#
-he bungee of course, then $ si@ed u' some 'ro' shaft ada'ter rings
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$ 'ut the rings on the tube, 2 'er 'iece, then g!ue on the shaft of the scre( eye#
&cre(ed it in, s!id the rings u' so the rubber (as %ery tight against the shaft
$ !et it dry and then 'u!!ed as hard as $ cou!d# &o far a 'ass, but (hen the sca!es turn
u' $ can 'ro'er!y test under !oad :*
$ think using carabenas bet(een the rings might be an idea#
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=!so $ noticed the '!ane has quite high friction against the ram'# ot too c!e%er, the
'o!y tunne! ta'e does not !ike it# ut (ith the (ings o< $ cou!d hard!y kee' the fuse
on the ram', the carbon rods (ere acting !ike the ram' (as oi!ed :*
e)t mod, to insta!! some short carbon rods on the underside of the (ings to kee'
the 'u!! required do(n :*
$ forgot to 'ut a 'ic u' of the ground scre( $.m using to ho!d the far end of the
bungee in :
Ok, a bit changed, ;rst big thanks to &ki''er i!!y for sending me u' t(o stee!
(e!ded rings# uch much stronger than my keyring e<orts and as $ ha%e no( found
out essentia! rea!!y#
e)t thanks goes to &hay :* &hay is one of the t(o chi!dren onna and $ ha%e in our
care# ?hy A ecause $ hunted high n !o( for a 'arachute for the bungee cord# ='art
from 'aying 20 quid for one on!ine $ (as out of o'tions# &hay came do(n (ith his
action man, said B you can ha%e his 'arachute B and B $ don.t !ike him any(ay B !o!
e%er been so ha''y to buy the chi!d a toy he didnt !ike !o!
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-here is the resu!t (ith ne( rings and chute :*
Ok so today its 'ouring do(n, didnt (ant to take to X out on a soaking (et muddy
;e!d, but initia! !auncher C bungee tests A He!! yeah :*
Dirst attem't did not go (e!! to be honest# One of the g!ued eyed bo!ts didnt stay on,
a!! $ heard as $ (as (a!king a(ay (as a (eird sort of bu@@ notice, then fo!!o(ed the
bungee 4 minus the bo!t * (ra''ed me across the back of my !eg and ;nger
""""""""" -hen fo!!o(ed 4 in this order * 'ain, jum'ing, 'rofanity, screaming
and then ca!m :*
$ 'acked u', (ent back, s(a''ed out the eyed bo!ts for just knots and (ent for
round t(o """"""#
Eound t(o (ent great, $ (anted to 'ro%e :
ungee (as ;ne at 15kg of !oad 4 $ on!y need 12kg ma) *
Di)ing on the cord he!d
Pets at home dog s'ike he!d at 15kg
Fauncher trigger cou!d ho!d 15kg !oad
Fauncher stayed in '!ace under !oad
Ee!ease mechanism (orked
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Parachute (orked
Ho( many 'aces needed for required !oad
=!! the abo%e com'!eted inc!uding sat in the car for 20 mins (ith bungee on the
!auncher at 15kg to make sure nothing (ou!d come a(ay if it (as !eft for any time :*
so far $ think 4 if my sca!es are correct * that 12kg is (ay too much !oad needed to
!aunch the X, $!! start at G9 of 'u!! tomorro( and $ bet that has more than enough
tbh
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