About this Plan
Blitz. Control line combat model.
Quote: "Faster than fast combat - prime object for our super-speed ribbon chopper! Bonus with this one as full details for blitzing with Blast fuel. Blitz, by Larry Scarinzi.
We have now entered the era of 120 mph combat models, high nitro fuels and rpms out of this world. High speed and tight turning capability are certainly a measure of performance in a combat model.
It was the ride home from the Chicago Nats with 'Boltin' Bill Ledden that sparked The series of Blitz test models. Discussion centered around a light streamlined craft that could utilize the higher rpm's available in present day nitro burners. It was agreed that the most successful combatter would be a marriage of a lightweight, well-designed model, properly tuned engine and fuel system that would act as one unit.
Several test vehicles were built to evaluate long and short moments, rud-der area distribution, fuel systems and airfoil thickness. Early in 1963 the single needle bearing Fox .35X out-shone the preceding combat special in some areas. Blast fuel was introduced and showed its effectiveness quite early. Between engine tuning and higher nitro fuels, we were now well into the era of development where we could literally 'Blast' engines apart just about at will, and this was not confined to the jewels of any one manufacturer. The Blitz was now doing 115 mph whenever we were willing to risk higher nitro fuels. Structural limitations in the .35X shaft were now evident and proved to be our next barrier. A plea went out to Duke Fox to supply a new shaft filleted as to eliminate a stress concentration in the crank-pin area. Along with this as a softening up factor went a claim that such a shaft would surely allow us to Blast over 120 mph!
After careful study the final Blitz was planned. Still contending with the crank-shaft barrier, this model consistently flew over 114 mph with low nitro fuels. Finally Duke came through with what is now well known as the stroaker shaft.
The first Blitz with a .36X engine was assembled and ready for test. Would it do the predicted 120 mph? Was Duke's new shaft really Blast-proof? Flying began with straight Missile Mist fuel and a speed of 112 mph..."
Direct submission to Outerzone.
Update 17/03/2016: Article pages, text & pics added, thanks to RFJ.
Supplementary file notes
Did we get something wrong with these details about this plan (especially the datafile)?
That happens sometimes. You can help us fix it.
Add a correction
Do you have a photo you'd like to submit for this page? Then email email@example.com
User commentsNo comments yet for this plan. Got something to say about this one?
Add a comment
* Credit field
The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.
This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.
© Outerzone, 2011-2021.
All content is free to download for personal use.
For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.
Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.