Topic: Zim's experimentals: she has a name - the Razor!

Well it's not finished yet, but it needs one of these...

Come on!!! More pics....don't be a tease

Ohhh,, some nice Idigbo.

    That bit of bent wire looks like an after thought tho mate

Come on get the rest of the pics up, before i post the ones you emailed me

I got it....

After the incident where Zim landed the "you can land these on a postage stamp" DLGin the lake he's got paranoid and decided to fit a water rudder to his racers 

CM

Close Clive, but not a water rudder lol!

Anyway, here's a better shot of the thingy.



Z

That black wing in the first pic looks illegally thin to me m8 

It's not a wing. It's a canard.  :angel:

You sure your not just turning your action man into Long John Silver 
Looks like a new wooden hook arm to me 

Damn...

 

looks like a crude band winder... zims going rubber powered 

Double damn!

Firing pin for a rocket motor? Zoom past the opposition...

Ok think I got it now zim 

Its a special tool for hooking your chin of the floor for when you see how fast my new model is 

Actually it's for your chin!

As it happens, the new Zim OD has been experiencing some trouble today. We have an issue with the elevator linkage - it's extremely tight down the back there, and it's proving rather tricky to get it working right!

Z

So you like a bit of a tight arse end then?

Is there anyone who doesn't? 

Get it all oiled up, will be 'lreet.

Get it all oiled up, will be 'lreet.

I always find " I cant believe its not batter" works a treat 

Here's a pic of the airframe with the tail section complete...



Is the complexity of the build worth it for that slim back end and anhedral tail? Put it this way - unless it knocks 10 seconds off my personal best - unlikely!! 

Zim

Sweet!!

   Two words "aquired taste" LOL

 a      SWIZ                  -T,

more likely !

stig

Those wings look strangely familiar   

I remember anhedral tails being quite the thing for pattern planes around the early '80s - in fact my old mate Denny Brown designed a 25 size mini pattern ship with one which was excellent. Think I had a piped 46fsr in mine so it went ok (leccy didnt work in those days )

Interestingly from a pylon point of view the real thing i remember about Denny's design was the knife edge perfomance - no idea why but you could just tip it on its side and it would just carry on - no rudder input required  . Not saying it was anything to do with the tail but if it was thats a bit of a bonus for pylon flying (i think  )

That is a bit of a savage anhedral but maybe the way forward 

you dont know if you dont try   

Lol at the Gollocks remark Nick! As for the anhedral - well tbh it was a bit of a case of thinking hmm a little more, nope just a bit more, not quite enough, that's it, glue, fack! too much! The main thing I'm worried about is having the tail knock off on landing. Anyway, although the build has been a lot of fun and definitely lots of learning for me (cheers for the help and pointers, Ad  ) I don't think the next one will be quite as extreme in several ways!

I didn't put it in for k/e performance Nick, but as for your remark re the pattern ship - if you had a piped 46 in ANY 25 sized airframe, I think it would "carry on" pretty well in any attitude regardless of the tail  :laugh: you're a talented man lol

Zim

Coming from someone who can barely see the no 1 pylon, I'll take that with a pinch of salt!

Z

Shhhhhwing. That looks lovely mate...Is it a bitcheron?

just a thought on powered pitcheron machines , is it worth , if you do not have the use of a

working wind tunnel , to poking oneself  though the sun roof of someone Else's car whilst being

driven at possibly about the legal limit and doing a load test on the surfaces ??

I suggest this out of experience , I once had very large air brakes 6x3,  two off on the top of a

 Wot 4  wing . In a dive these airbrakes over came the servos , full size 102s and opened, till

the speed decayed , an absolute sod to fly as they did not open evenly . In the end I had to put a boundary layer "cheeta " to kill the lift on them .

could the forced load on a pitcheron be too much at 80 to90 plus for the servos employed ??

stig

I think the load is OK Stig - the wing is pivoted at close to its MAC, the movement is minute and the servos are 4.5kg metal geared digis.

But we will see! Although I have to say, the more I think about it, the less I like the idea!

Zim

 I like the idea , you must make it work!
stig

if in doubt take it up the slopes with you and ring it out without the motor 

Well Stig, she's going to be flying at Burbage on Sunday! In the meantime, here's a short vid showing her flappy bits...

The Zwist - Club 2000 racer concept... on Vimeo

Zim

Nice one Rick.
lemme know when your up there and I will try to make it too.
George

Nice concept Zimbo.

I notice in the video credits you say that the tricky parts of the build were done by Adam.

Can I take it by "tricky bits" you mean anything that involves the cutting, shaping, sanding and glueing of wood, and its subsequent alignment and final assembly?

 

 

I was pretty amazed at how square it all was.

Arrrrgh...fugly

Had a lot of help from Ad in figuring out a few bits on it, Pete, but I did most of the bashing/ glueing etc myself!

Dunc - what time on Sunday? No fkin idea - it's Mother's Day - I'm being pretty presumptuous in assuming I'll get out anyway! If you're thinking morning, you're probably thinking of the wrong guy anyway.

Zim

  I will sit st home and listen 

do I hear a cheer 

or was that a thump 

stig

I'm pretty sure it will fly fine, but I'm not sure that it will race well. Still - there's fresh ideas brewing as a result of this one!

Zim

bye bye tailplane first flight 

the landing is a worry in that regard Phil...

Z

Nice concept Zimbo.

I notice in the video credits you say that the tricky parts of the build were done by Adam.

Can I take it by "tricky bits" you mean anything that involves the cutting, shaping, sanding and glueing of wood, and its subsequent alignment and final assembly?

 

You forgot marking out 

CM