Modification Gravity Rider 224 Modification

Modification - Gravity Rider 224 {Modification}

Contributed by Les Bradshaw

Construction Rating: starstarstarstarstar
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar
Manufacturer: Modification
Style: Cluster, Futuristic/Exotic

Brief:
After readin' Chan Stephens' review, matey, I decided t' modify t' design t' boost t' power. I changed from a single 18mm mount t' dual 24mm mounts. I also made t' ejection charge t' vent into t' top center tube and eject from t' very top.

sunward_gravityrider

sunward_gravityrider_motormountsModifications:
After decidin' t' upgrade t' engines, arrr, me bucko, I looked through me parts pile and found appropriate 24mm motor tubes, centerin' rings, matey, and engine hooks. Avast! Blimey! Avast, me proud beauty! Blimey! I had just purchased RockSIM, but with t' multiple tubes I smartly discovered this be nay t' first rocket t' attempt t' use RockSIM on. Begad! Blimey! Instead, shiver me timbers, I figured out t' extra weight I was addin' with t' motor mounts and t' D12 engines so I could add some clay t' t' nose cone t' maintain t' proper balance. Begad! Blimey! These new 24mm mounts installed into t' t' tubes t' way t' 18mm mount would have installed.

sunward_gravityrider_wingletsFor t' top end, I measured t' shoulders o' t' nose cones. Blimey! I lined t' top tube with t' 2 lower body tubes and made marks t' see where t' tubes touched. I increased t' overlap o' t' top tube with t' 2 lower body tubes t' give me room t' make me vent slots. Avast, me proud beauty! These I carefully cut about 3/16 in wide and 3/4 in long. Well, blow me down! When I glued this tube t' t' two lower tubes, me bucko, I filleted t' joint somewhat heavily t' make sure I did nay have any air leaks.

T' 2 lower nose cones were then glued into place. I angled these slightly for what I felt was t' best look. Well, blow me down! Begad! I went back t' me parts pile t' find another nose cone t' seal t' bottom o' t' top tube. Avast, me proud beauty! Arrr! When I glued in t' top fins I set these t' be behind t' new nose cone. This also lowered t' fins a bit which would also help maintain t' stability.

T' tri-fold shock cord mount moved t' t' top tube. Avast! Arrr! As I indicated earlier, me hearties, I added about an ounce o' clay weight t' t' top nose cone. Begad! T' 2 D-12 engines could handle t' weight.

Construction:
T' kit came with t' following:

  • 3 BT-56 tubes
  • 2 BT-50 tubes
  • 3 plastic nose cones with canopy
  • 18mm motor tube and associated rings and hooks
  • 18" parachute
  • Laser cut fins
  • shock cord
  • decals

All t' parts were well packed and received without any damage.

Besides me mods, ya bilge rat, me bucko, t' rest o' t' build went well and followed Chan's build. However, shiver me timbers, some o' t' problems he noted such as t' template were already corrected in me version - nice t' see t' manufacturers listen t' t' review comments. Begad! Aye aye! I still found t' instructions for t' top fins a bit confusing, but since these were bein' modified anyway it did nay matter t' me.

I primed and painted t' rocket white. I found Testors had some special tintin' spray for car models t' simulate windshield tinting. Aye aye! I decided t' try this for t' canopies.

Construction Rating: 5 out o' 5

Flight:
At NERRF 3, shiver me timbers, arrr, I loaded t' parachute into t' top and 2 D12-5 motors. Ya scallywag! Avast! When launched, t' rocket appeared t' wobble quite a bit, but smartly straightened out and took off fast and high. Well, blow me down! I thought I saw somethin' drop off, but I be concentratin' on trackin' t' rocket too much t' worry. Ya scallywag! T' rocket went several hundred feet and ejected t' parachute and drifted down nicely, although quite a ways down range. T' vented ejection charge worked without any issues. Arrr! When I located t' rocket I found one o' t' large, me bucko, main fins be missing. Avast! I looked around but could nay find it anywhere near t' rocket. Well, blow me down! I walked back and as I passed t' launch control area, shiver me timbers, me hearties, thar was me fin on t' table. Begad! Blimey! I guess that be what dropped off - no wonder it wobbled! Perhaps dual D's versus a single C did add a bit o' thrust. Begad! Avast! I have repaired t' rocket (and used epoxy t' improve t' joint). Ahoy! Based on how high this went and drifted, I do nay have a large enough space where I fly locally t' recover this, ya bilge rat, so I will have t' wait for another opportunity where thar be a large field (perhaps NERRF 4?)

Flight Rating: 5 out o' 5

Summary:
This is a great lookin' kit, and with t' modifications will fly fast and high. Begad! Ahoy! I love t' scifi and fantasy style kits, and this one be right on.

Overall Rating: 5 out o' 5

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