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HelicopterOff Topics › Damn this English weather
11-20-2006 12:02 PM  11 years agoPost 1141
JR_Vibefreak

rrApprentice

Bangkok Thailand & UAE Dubai

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Finally its raining in UAE Dubai! yeeaaaaaaaaay! First time i see it!

GIXXER4LIFE Philipp

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11-20-2006 12:05 PM  11 years agoPost 1142
Yug

rrMaster

UK. Herts

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You what, you mean you've not seen rain in Dubai before ?

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11-20-2006 12:06 PM  11 years agoPost 1143
JR_Vibefreak

rrApprentice

Bangkok Thailand & UAE Dubai

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nope havnt rain for a year in dubai

GIXXER4LIFE Philipp

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11-20-2006 12:20 PM  11 years agoPost 1144
PaulJC

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Hertfordshire UK

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Paul - which tail blades are you using ?
Currently NHP 95's, i've got no vibe problems and have just fitted another set of stadard radials for the time being, i'll get in some other blades as well as it is starting to get a little annoying lol

Re-entering the atmosphere...

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11-20-2006 12:30 PM  11 years agoPost 1145
Yug

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UK. Herts

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Hmmm, I persevered alot with NHPs, both square and woven tipped. Inspite of balancing them to perfection both statically and dynamically, I still had problems at high head speeds. What I would like to do but never got round to would be a more thorough dynamic test rather than letting the blades find their own zero pitch when I stick the hub and blades in the dremmel. I think the problems came when the blades were on the heli - they had some pitch on them, and the resultant thrust from each blade was unequal causing axial vibration. I fractured a few tail boxes because of this. Alternatively, the problems could be down to tip vorticees causing some kind of resonance and overly stressing the bearings. Dunno really. The thing about the SABs, Vs and Radix is the tips are very fine which would reduce the magnitude of votricees. I'd love to have time to build some decent test gear to properly analyse this stuff

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11-20-2006 12:53 PM  11 years agoPost 1146
Barney

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Inverness Scotland

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Yug the NHP's use a thicker section... could it just be the increased overall weight against the slimmer ones etc

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11-20-2006 12:54 PM  11 years agoPost 1147
PaulJC

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Hertfordshire UK

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Being able to measure thrust given by any point along the length of a blade would make for a seriously good piece of equipment

Re-entering the atmosphere...

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11-20-2006 12:56 PM  11 years agoPost 1148
colsy

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Cambridge, UK

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As this thread is about the Poxy weather, i thought I'd chime in, to let you all know its raining here 'AGAIN'.

Colin.

Only Quote From Experience.

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11-20-2006 01:05 PM  11 years agoPost 1149
Yug

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UK. Herts

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well, we've got to natter about something if we can't fly

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11-20-2006 01:05 PM  11 years agoPost 1150
PaulJC

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Hertfordshire UK

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As this thread is about the Poxy weather, i thought I'd chime in, to let you all know its raining here 'AGAIN'.
Same here so a few lunch time flights are out of the question and it'll be dark by the time i go home

Mayby tomorrow

Re-entering the atmosphere...

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11-20-2006 01:16 PM  11 years agoPost 1151
colsy

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Cambridge, UK

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Ok then, perhaps you boys can help me find something then,

I'm trying to find a alloy case, that i can adapt to hold main blades, something similar to the TREX Case but longer.

Any Ideas.

Col.

Only Quote From Experience.

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11-20-2006 01:23 PM  11 years agoPost 1152
Yug

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UK. Herts

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Violin bow case ???? - just a thought
However, I'd be inclined to make one from either plywood or aluminium, you get exactly what you want then

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11-20-2006 01:26 PM  11 years agoPost 1153
Barney

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Inverness Scotland

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colsy
What about a snooker cue case?..might need a trim though

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11-20-2006 01:28 PM  11 years agoPost 1154
PaulJC

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Hertfordshire UK

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Alloy snooker cue case, available in full, 3/4 & half length, remove the internals and a set of blades (or probably 4)would stack up in there nicely

Re-entering the atmosphere...

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11-20-2006 01:28 PM  11 years agoPost 1155
PaulJC

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Hertfordshire UK

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beat me to it

Re-entering the atmosphere...

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11-20-2006 01:32 PM  11 years agoPost 1156
banana skin

rrNovice

uk

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A Greek Spaghetti case

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11-20-2006 01:38 PM  11 years agoPost 1157
bobj

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United Kingdom

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Hi

Or a soft blade carry bag like the Curtis one.
Personally I can not normally be arsed to take blades off of the model but if your tight on transport space it helps.

Cheers
Bob J

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11-20-2006 01:41 PM  11 years agoPost 1158
Barney

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Inverness Scotland

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Hey Yug I'm still looking in to getting a Rush but not sure if the overall cost justifys it..£245

I would still need 3 servo's..Quick Uk tail grips..poss try Kasama head..
The quick head is fine but could do with better pitch range

That would be 450-500 by the time I finished..how much better is it than a well laid out rap 50 using similiar parts for around half that..

BTW I did the mod to the mixer arms last night..but dont have the tools to tap the carrier so temporarily adjusted the long rods for clearance to try it out

I noticed the Guy plugging the Nidach frames was flying a rush too the other day..what gives there..?

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11-20-2006 02:24 PM  11 years agoPost 1159
Yug

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UK. Herts

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Barney, last week I was deliberating whether to do a second carbon raptor. I had crashed my R50 and had to split the frames to replace the bearings which is allways a bummer unlike the XeroG which has removable bearing blocks. To digress here - in the plastic frames, I use a second mast collar under the top bearing incase the lower jesus bolt gives up. Can't do that on the XeroG due to the way the bearing blocks are made - one could add a bearing retaining screw like on the 90 but it may undermine the strength of the bearing block.
Anyhow, once I'd got my frames split I noticed the right hand frame was cracked near the boom support mounting. My immediate thought was, "goody, time to go carbon" I've always wanted to try the Nidach frames as they are still mCCPM, but they are the same price as the XeroG - £200. Compare this to £15 for the R50SE. I opted to keep to plastic frames because they do fly very well and in many respects, the R50 tracks better and is smoother than the XeroG although the XeroG is a little more lively and a tad lighter. Because the XeroG is mechanically stiffer, it does require exacting balance as the frames are very transmissive of vibration which places more demands on gyro setup. Another advantage of the XeroG is that I have never had a pinion gear get loose in the bearing unlike the R50 which I think due to the extra flex of the frames, allows the pinion to work loose.
They both have their strengths and weaknesses and do fly differently, but then one is mCCPM and the other is eCCPM, but here again these 2 control systems have their advantages and disadvantages.
Both my R50 and XeroG are identical except for the main blades, gyro and servo arrangement, but at the moment I'm preferring my R50 although it requires more maintenance. It just seems to track that much better in rolling circles/8s but then I feel there are gyro gremlins on the XeroG.
If you've got the dosh, I would give the XeroG a go because you have a great deal of flexability in the way you setup your machine.
Appologies for my ambivolence

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11-20-2006 02:51 PM  11 years agoPost 1160
bobj

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United Kingdom

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Hi

I'm with Guy on this one (I think anyway)it depends what you are after out of a 50 model, my R50 flies just fine with plastic frames and if I smack it in hard enough to break the frames then no big deal to fix, it's cheap and quick to do.
It is a model I use for practise and just low stress fun so I really don't care about it too much, if I were to try and make it into something a bit nicer then I am sure I could with one of the carbon frame conversions around and it might then fly a bit more accurately but I am sure it would also lose some of it's low stress don't care "funability"

Cheers
Bob J

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