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, arrr, I decided t' modify t' design t' boost t' power. Arrr! I changed from a single 18mm mount t' dual 24mm mounts. Ahoy! 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, I looked through me parts pile and found appropriate 24mm motor tubes, centerin' rings, matey, and engine hooks. Blimey! I had just purchased RockSIM, but with t' multiple tubes I smartly discovered this was nay t' first rocket t' attempt t' use RockSIM on. Avast! Instead, me hearties, ya bilge rat, 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. Arrr! 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! Well, blow me down! I lined t' top tube with t' 2 lower body tubes and made marks t' see where t' tubes touched. Aye aye! Blimey! 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! Avast! These I carefully cut about 3/16 in wide and 3/4 in long. Avast, me proud beauty! When I glued this tube t' t' two lower tubes, ya bilge rat, 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. Avast, me proud beauty! Blimey! I angled these slightly for what I felt was t' best look. I went back t' me parts pile t' find another nose cone t' seal t' bottom o' t' top tube. Aye aye! Blimey! 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. Blimey! As I indicated earlier, arrr, shiver me timbers, I added about an ounce o' clay weight t' t' top nose cone. Avast, me hearties, me proud beauty! 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, t' rest o' t' build went well and followed Chan's build. Aye aye! However, 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. Arrr! Ya scallywag! 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. Begad! I found Testors had some special tintin' spray for car models t' simulate windshield tinting. Begad! I decided t' try this for t' canopies.

Construction Rating: 5 out o' 5

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

Overall Rating: 5 out o' 5

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