I'm curious. I'm having a clearout of stuff I will never use, including loads of plans/details of various models etc.
One thing I will no longer need is an excerpt from Model Aviation Dec. 1978, details of a jet model called Super Burp, which held various records, best speed of 211.18mph That was 42 years ago. Am I right? Not a lot seems to have happened in the last 42 years? 211.18mph is of the same order that we seem to be flying today?
Hello Ian
I am just doing a website update with an article by Dave Smith on F21 and I saw your post come in.
I would say that most records such as the one that you mention about 'Super Burp' were set under some different conditions than those prevailing today, usually this is line diameter.
The safety requirements (bigger line sizes) are much more demanding in the 21st century than 1978. I am not familiar with the AMA regulations for jets in 1978 but it will very likely be with smaller diameter wires and less line length.
Regards
B.
Barrie - I believe the details you mention apply to contests run by the relevant organisations, but for record purposes line length and dia. are free choice? All you have to do is pass a pull test?
Hello Ian
Yes you are right the outright records are much more free on line diameter and length but force the model to a wing loading requirement.
However the recent record attempt model flew on UK regulation Fats Jet lines.
B.
