Ripmax Mini Xcalibur

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Dave Wilshere
Posts: 409
Joined: Sat Nov 23, 2013 6:25 pm

Ripmax Mini Xcalibur

Postby Dave Wilshere » Tue Mar 29, 2016 6:25 pm

Having finished Flipper, next is the Mini Xcalibur.
Layout will be familiar to any Xcalibur owner, its just a mini version.
As usual its a good ideal to assemble the complete airframe, fit the wing clamp screws and check everything is as it should be before starting to glue anything.
Prep starts with ironing all the covering, especially around the hinge faces. Fuselage needs any excess glue or rough edges cleaning off. If you are using a JetCat P-20 the mounting rails need trimming as the gap is too narrow as supplied.
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nigel bray
Posts: 4
Joined: Fri Jun 20, 2014 1:02 am

Re: Ripmax Mini Xcalibur

Postby nigel bray » Wed Mar 30, 2016 11:27 am

just on with putting one together dave.
seems like a solid airframe. p20 going in mine.
pretty much built it, just doing the install.
do you think its possible or needed to use a uat.? or just go with a felt clunk??

Dave Wilshere
Posts: 409
Joined: Sat Nov 23, 2013 6:25 pm

Re: Ripmax Mini Xcalibur

Postby Dave Wilshere » Wed Mar 30, 2016 4:53 pm

I'm putting the mini MAP Bubble trap in mine, but the prototype was flown with just the felt clunk we provide in the package. The gain is with the Bubble trap, I can use all the main tank and sitting above the steering servo it will help with nose weight.

Dave

nigel bray
Posts: 4
Joined: Fri Jun 20, 2014 1:02 am

Re: Ripmax Mini Xcalibur

Postby nigel bray » Mon Apr 11, 2016 10:43 pm

dave.
finished mine and flew it this weekend just gone. got to say I was a little disappointed in it.
it was set up as per the instructions. cg was on the 115mm mark, balanced dead level, inverted.
movements where as the instructions also.
half way into the flight the flap/elevator mix was tested and fine.
then all hell broke loose when flap was put away. it flicked quite violently as it went into the turn. power was on before the turn started.
7mm on the ailerons was nowhere near enough. id also set up 10mm aswell which still felt soft. no expo either.

what settings have you found to be best on yours??

regards

nigel

Dave Wilshere
Posts: 409
Joined: Sat Nov 23, 2013 6:25 pm

Re: Ripmax Mini Xcalibur

Postby Dave Wilshere » Tue Apr 12, 2016 8:00 am

Nigel

Are you measuring at the root or tip. Looking at the manual, the words "at the tip" were missed. I measured at the tip (where cord is less) Figures are as I was flying the prototype. You can see in the manual photo (of the root) its more like 10-11mm. The ailerons are soft on all Xcalibur's though, they are not designed to be sharp.

Everyone has different preferences, so you should always adjust to suit your thumbs!

The cleaning the flap and it stalling could be a number of things, I found the prototype handled fine. Saturday or Sunday? Sat was clam and Sunday windy where we were.

Dave

nigel bray
Posts: 4
Joined: Fri Jun 20, 2014 1:02 am

Re: Ripmax Mini Xcalibur

Postby nigel bray » Tue Apr 12, 2016 6:20 pm

Movement was measured at the root. Luckily id set higher rates!!
We was up on the concrete pan up on elvington on the sunday.
weather was sunny and warm'ish with a bit of a breeze.
In its defence, only a couple of clicks of trim was required.
the flick happened as it turned downwind.
I understand it probably stalled due to a number of factors. Kept me on my toes though trying to get it back!!

Dave Wilshere
Posts: 409
Joined: Sat Nov 23, 2013 6:25 pm

Re: Ripmax Mini Xcalibur

Postby Dave Wilshere » Wed Apr 13, 2016 5:56 pm

The rudder servo insert allows 12g servos to be used.

To get full flap movement the centre hinge needs to be as close to the skin as possible.
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Dave Wilshere
Posts: 409
Joined: Sat Nov 23, 2013 6:25 pm

Re: Ripmax Mini Xcalibur

Postby Dave Wilshere » Sun Apr 17, 2016 4:51 pm

No issues at all with my new one. Even copes with uncut grass with my 3mm packers
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Dave Wilshere
Posts: 409
Joined: Sat Nov 23, 2013 6:25 pm

Re: Ripmax Mini Xcalibur inc video

Postby Dave Wilshere » Tue May 03, 2016 1:44 pm

Video on Saturday, uncut grass and our rough cross wind runway, but copes well.
This was not a full tank, normal flights are 8 mins+

https://youtu.be/t_MMa5gueRM

Dave Wilshere
Posts: 409
Joined: Sat Nov 23, 2013 6:25 pm

Re: Ripmax Mini Xcalibur

Postby Dave Wilshere » Sun Jul 23, 2017 3:46 pm

Finally found time to finish this RA scheme Mini Xcalibur. P-20SE with kero start, KST M&R servo set, PB Digi switch with a 1600 2s Li-Po iGyro 3e.
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