Here is a list of all the postings Mike Rolls has made in our forums. Click on a thread name to jump to the thread.
|Thread: A pitch too far|
But with IC the revs will increase in partial compensation not sotrue for electric, of course..
|Thread: What is a typical sink rate for a 2M glider?|
We always used to trim by reducing tailplane incidence until just at the stall - packing up the tail TE, then removing the last piece of packing or possible and/or tightening the glide circle.
Oh - I should have mentioned - wing loading for these models is 4.5 to 4.7 ozs per square foot.
Very interesting thread - I was intrigued by some of the sink rates quoted as an illustration - perhaps - of piloting techniques? The lowest sink rates I have come across are in the F/F F1A class (a/2 to we old fogies) where good models achieve around 1 foot per second in dead air.
|Thread: Keil Craft Ajax|
The KK beginners' kits showed the cg at 1/3 back, but could, in fact, be trimmed out with it further back - my Cadet flew much better balanced at the rear spar (about 2/3) rather than the 1/3 shown
|Thread: Charging lipos in advance or not.|
I'm another who 'charges and leaves'. To be fair, I have had some protest - one pack by puffing up (this was before cell balancing leads came along) and 3 or 4 who have had a cell die, but as I can only fly infrequently, the convenience of being able to go flying at a moment's notice far outweighs the downside. The batteries are kept in a fireproof safe, so I'm not worried about them getting more aggressive!
|Thread: BMFA - Is the 'A' for apathy?|
Well my excuse is that it is 386 miles away.
|Thread: Acro Wot side thrust|
The amount of sidethrust you need can also be affected by the engine/prop combination. With my AW I found that the design sidethrust was fine with an 11x6 (ST51 and quiet silencer) but the combination was too noisy for our site so had to try alternative props. I found that an 11x9 and a 12x6 (my eventual choice) both needed a little more right thrust than the design figure.
The best check, of course, is to pull a truly vertical upline and see what the model does. As speed decays it will start to yaw - obvioulsy if it yaws left, more right thrust is needed and vice versa. However, if it climbs straight up long enough to meet what you want, no need to fiddle!
|Thread: Plan Drawing Meanings|
Just one ppoint - grain direction in ply can sometimes be important - for eaxample dihedral braces which tend tobe long and narrow. With 3-ply being the domnant material we use, such braces are noticeably stonger if the grain on tho outer two ply laminations runs lengthwise.
|Thread: Backburn Beverley|
Just looked it up via Google maps - brings back memories. We had occasional visits from Beverleys at Marham (this was '56-58) which we christened 'heavily beverly' - even made the Valiants look slim!
|Thread: Lipo connections|
3.5 on motor/ESC interface, 4 on ESC/Battery, except for the tiddlers which have 2mm all round
|Thread: So you think you are a good modeller.|
|Thread: P-40 found in desert.|
Actually, Peter, it wasn't the journalist who said that:
"Andy Saunders, a military aviation historian" was the one.
Edited By David Ashby on 12/05/2012 09:22:08
Oh, and in Goodbye Micky Mouse he inferred that the USAAF preferred the P-51 to the P-47because it was cheaper.
Bomber and Goodbye Micky Mouse I thoroughly enjoyed. Fighter was a decent historical analysis, but one thing I found odd - he claimed that the turning radiius of the Bf109 was superior to that of the Hurricane and Spitfire because of its smaller wingspan. Not so..
|Thread: Brushless motors - reliability survey|
I have a wide variety of motors from Jeti Phasor 30/3 to cheapest possible bell motors. Never had any problems other than one ham-fisted damage to a small shockie motor - entirley my fault, not that of the motor.
|Thread: A note to the mods|
@Mike - no I mean what I say - constructive criticism that indicates pratical ways forward or makes positive suggestions - not just negative, in some cases ill-informed, comment.
Sorry - but that just smacks of a totally closed mind. What have I typed that is ill-informed?
From the tone of your posting I take it that by constructuve criticism , you mean only criticism which refuses to recognise that there are a good few other fora on a vareity of subjects, not just modelling, which work far more easily than does this one.
Sorry if that upsets you - but this forum is far from being as easy to use and navigate around than others that I use.
I must agree that this site is not very easy on the mouse wielder. Why does it not have the facility to check postings since one's last visit as so many sites do?
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