geofb Posted January 20, 2007 Share Posted January 20, 2007 There is a reference in the latest magazine to an article on prop selection being on the web site. Can you point me to it please? Quote Link to comment Share on other sites More sharing options...
Nick Burroughs Posted January 27, 2007 Share Posted January 27, 2007 I cannot find it either. Quote Link to comment Share on other sites More sharing options...
RCM&E Posted January 30, 2007 Share Posted January 30, 2007 Hi guys, sorry for the delay in response to this one. I've just spotted the reference you mention in the February issue. This is the first time I've seen that particular caption, and I have to put my hands up and say that I haven't put that particular feature on the site yet. Needless to say, I'll make sure it goes up as soon as I get the opportunity - most likely tomorrow. I'll post again in here once it's up. Quote Link to comment Share on other sites More sharing options...
geofb Posted January 30, 2007 Author Share Posted January 30, 2007 Tom, thanks for your response. No appology necessary - you're doing a great job, keep up the good work. This is going to be a really great site. Guess I should have added reference to where I saw the caption! Thanks again. Quote Link to comment Share on other sites More sharing options...
RCM&E Posted January 30, 2007 Share Posted January 30, 2007 That's okay geofb; I must admit I was stumped there for a while! I've located the article in question though, so as soon as I get the chance I'll get it up on the site. Quote Link to comment Share on other sites More sharing options...
Nick Burroughs Posted January 30, 2007 Share Posted January 30, 2007 Look forward to seeing it!! Quote Link to comment Share on other sites More sharing options...
RCM&E Posted February 5, 2007 Share Posted February 5, 2007 Hi guys, the article is now up. Sorry for the confusion. Quote Link to comment Share on other sites More sharing options...
geofb Posted February 5, 2007 Author Share Posted February 5, 2007 Thanks Tom. Quote Link to comment Share on other sites More sharing options...
Franz Kuhn Posted February 25, 2007 Share Posted February 25, 2007 Could you please put the Tables that are referenced in this article on the website as well or maybe point me to it on another site?Thanks. Quote Link to comment Share on other sites More sharing options...
Jim Davy Posted February 26, 2007 Share Posted February 26, 2007 Hi Tom,I,ve just read Andy Elisons article on prop selection, a really good and explicit explanation of what does what and why, but the tabels mentioned in the article seem to be missing.It would be great if you could include these.Keep up the good work the sight is looking good, and if this is just the beginning then you're on a winner. Quote Link to comment Share on other sites More sharing options...
RCM&E Posted February 28, 2007 Share Posted February 28, 2007 Sorry guys – I'm catching up with some forum posts and I've only just spotted this one. Apologies for this; I'll get the tables up as soon as I can. Thanks for pointing it out. Quote Link to comment Share on other sites More sharing options...
Marko Posted March 4, 2007 Share Posted March 4, 2007 can anyone help with my prop selection? for my .25 magnum xl.my local model shop sold me a 9/6 prop! is it over propped for my vampire (not pusher)if so which one would be best without over reving?..would a 3 bladed prop be any use and can i get a spinner for it ? Quote Link to comment Share on other sites More sharing options...
Martin Harris - Moderator Posted May 3, 2007 Share Posted May 3, 2007 Sounds reasonable as a starting point. 9x6 is the size used on Irvine 25s in Club 2000 pylon racing which gives good revs once they unload in the air and should probably suit a Vampire, I'd have thought.1/12 scale combat models running 25s usually use 9x5 props (being limited by the rules to a pitch + diameter formula of 14 e.g. a 10x4 or 8x6 would also be legal) and the 25s start really performing on this size whilst scraping under 82dB.As for being over propped on a 9x6, my RCM&E plan BAe Hawk flies extremely well on an SC25 using a 10x6 (Master Airscrew) prop, which gets it under 82dB comfortably. I suspect your Vampire may be a similarly constructed model from the same designer?Yes, you could go smaller and get even better performance, but I'd expect you'd have problems making 82dB and unless you're really out in the sticks this should be a major factor in your choice! Quote Link to comment Share on other sites More sharing options...
DDH Posted July 15, 2007 Share Posted July 15, 2007 nice prop chart. very helpful.can one use it for electric on a power for power basis - i.e. same prop for x watts electric as prop for x watts ic? Quote Link to comment Share on other sites More sharing options...
Chris Dorn Posted July 20, 2007 Share Posted July 20, 2007 just about to put together a YT 2metre Adrenalinewill be fitting either ASP-180, Saito-180 or (if i can afford it) a YS-Dz140 or 160any suggested prop sizes?the reviews Vs manufacturers recomm's seem wildly different here, PLUS i've never used a four stroker before....2 blade, 3 blade, anything from a 15x8 to a 18x10 on the ASP + SAITO and even up to a 16x12 to 17x13 on the YS????can anybody help?cheers chrissy d Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted July 23, 2007 Share Posted July 23, 2007 Has the prop selection table been published yet???? I can't seem to find a link to the download???It might be just me!!! Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted July 23, 2007 Share Posted July 23, 2007 Look at the front page article on the left just below the spitfire piccy.David. Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted July 23, 2007 Share Posted July 23, 2007 Thanks David......found it!!! Quote Link to comment Share on other sites More sharing options...
Ernie Posted October 15, 2007 Share Posted October 15, 2007 Hi guys, I remember, about a million years ago, we flew control line oliver tiger powered racers...We used wooden props, but the interesting thing was thst we reworked them. lightening and thinning the blades, then polishing them. I can still hear the sound. Is there any mileage in this reworking, for say a funfly? Quote Link to comment Share on other sites More sharing options...
gary Posted May 31, 2008 Share Posted May 31, 2008 Has the prop size chart disappeared again, i cannot see it. Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted May 31, 2008 Share Posted May 31, 2008 It's still on the lower front page Gary...... Quote Link to comment Share on other sites More sharing options...
Former Member Posted May 31, 2008 Share Posted May 31, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
gary Posted May 31, 2008 Share Posted May 31, 2008 Ah, i was looking at the far left of the page where forum threads and last reviews section is. Thanks Quote Link to comment Share on other sites More sharing options...
Stuart Morris Posted July 31, 2008 Share Posted July 31, 2008 Propellor selection? This question always puzzles me. Most engine manufacturers have been around now for some time and I would have thought that they more than anyone would know the correct starting point for any propellor for any type of model. Yes I know you can then fine tune the size according to the model, weight etc. later, but go by the manufacturers recomendation and you won't be far out. Quote Link to comment Share on other sites More sharing options...
Martin Harris 2 Posted August 6, 2008 Share Posted August 6, 2008 Stuart, While the manufacturers recommendations are a decent starting point, in my experience they are optimised for performance and don't take our usual 82dB limit into account. The characteristics of a model will influence selection significantly - a particular engine could be used for anything from a pre-WW1 pioneer to a superfast delta and would use wildly different props for each model. Quote Link to comment Share on other sites More sharing options...
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