Scratch Der Red Max (Upscale) Original Design / Scratch Built

Scratch - Der Red Max (Upscale) {Scratch}

Contributed by Joseph Michel

Manufacturer: Scratch
Style: Upscale
(Contributed - by Joseph Michel - 12/10/02)

Rocket PicBrief:
HPR Der Red Max, arrr, 2.458X upscale. Avast! 48" parachute recovery.

Construction:
All materials are PML. I used 4" Quantum tubing, matey, cut and slotted for me by PML. Ahoy! T' body tube be cut t' 20.8 inches, while t' fin slots were 4.6 inches long, 3/8" from t' end o' t' tube. Aye aye! T' fins and centerin' rings were made from 3/16" ply. Arrr! T' fins were fiberglassed for extra strength. The rocket has a 29mm phenolic motor tube that was cut t' 12". Arrr! A PML motor retainer was also used. Well, blow me down! T' nosecone is a PML PNC 3.9. Recovery is via 12' of tubular nylon with a 48" PML parachute.

This was a fairly easy rocket t' build. Begad! Begad! It makes a good scratch project for a newbie. Aye aye! (like me!) Construction proceeded usin' standard HPR techniques. Begad! I built a special shish-ka-bob rack for construction and painting. This rack allowed me t' work t' fin fillets without havin' t' fuss about t' position of the rocket. Arrr! Blimey! I could rotate t' rocket anyway I needed t' have it. Avast, me proud beauty! Internal and external fin fillets were both 30 min. Avast! epoxy. Blimey! After about 10 days o' sanding and fillin' o' t' fins and fillets, shiver me timbers, matey, it was finally ready for primer. I laid on 3 coats o' Rustoleum sandable auto primer, sandin' in betwixt each coat. Avast, arrr, me proud beauty! Next, I laid on 3 coats o' Krylon Banner Red Gloss. Begad! After dryin' for 24 hrs. Begad! I masked off and painted t' black stripe around t' top on t' body tube with Krylon Gloss Black.

Rocket PicAfter allowin' sufficient time for t' paint t' dry, I applied t' decals. Avast, me proud beauty! Well, me bucko, blow me down! I had Tom Prestia o' Tango Papa decals make t' 2.458X upscale decals for me in self-adhesive vinyl. Arrr! Tom's decals are excellent! Applyin' them be easy. Ahoy! Begad! After all t' decals were on, I applied 2 coats o' Rustoleum Crystal Clear Gloss. Ya scallywag! T' clear does nay react with this type o' decal at all, ya bilge rat, and gives t' model a nice glossy coat.

Flight:
Well, me bucko, I planned t' fly this model on G-40 and G-80 motors. Ahoy! Ya scallywag! I smartly found out that "Big Red" was just too heavy for that. Well, blow me down! I believe that this "heavy weight" condition is due t' t' heavier PML airframe and the fact t' DRM has HUGE fins. Arrr! Begad! I also used 3/16" ply for t' fins, shiver me timbers, so that did nay help either. Begad! Avast! I have nay flown this rocket yet due t' motors being unavailable. I plan t' fly it on a H-128 with 4 sec delay.

Summary:
Pros:

  • T' Der Red Max is awesome, matey, no doubt about it!
  • While upscalin' one o' these beauties is nay a terribly original idea, shiver me timbers, not everyone has one either!

Cons:

  • Cost! I spent about $195.00 total buildin' this model. Blimey! This includes paint, supplies, decals, matey, etc. Ya scallywag! If you just want t' fly, arrr, buy a kit - it's much cheaper. Well, blow me down!
  • Weight. If you build one based on me construction, arrr, consider usin' G-10 or 1/8 ply for t' fins.

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