PDA

View Full Version : Riging - deriging trike



Kestutis
5th June 2012, 11:20
I can't find a topic about riging-deriging problems for some trikes ...

Any way, see how one of my friends solved that problem ...

Attached files http://cloudniner.co.uk/images/converted_files/115614=8584-atvaizd000.jpg (http://cloudniner.co.uk/images/converted_files/115614=8584-atvaizd000.jpg) http://cloudniner.co.uk/images/converted_files/115614=8585-atvaizd001.jpg (http://cloudniner.co.uk/images/converted_files/115614=8585-atvaizd001.jpg) http://cloudniner.co.uk/images/converted_files/115614=8586-atvaizd002.jpg (http://cloudniner.co.uk/images/converted_files/115614=8586-atvaizd002.jpg) http://cloudniner.co.uk/images/converted_files/115614=8587-atvaizd003.jpg (http://cloudniner.co.uk/images/converted_files/115614=8587-atvaizd003.jpg) http://cloudniner.co.uk/images/converted_files/115614=8588-atvaizd004.jpg (http://cloudniner.co.uk/images/converted_files/115614=8588-atvaizd004.jpg) http://cloudniner.co.uk/images/converted_files/115614=8589-atvaizd005.jpg (http://cloudniner.co.uk/images/converted_files/115614=8589-atvaizd005.jpg) http://cloudniner.co.uk/images/converted_files/115614=8590-atvaizd006.jpg (http://cloudniner.co.uk/images/converted_files/115614=8590-atvaizd006.jpg)

Kirk
5th June 2012, 11:55
For a non-folding trike that is a relatively neat solution provided you are always flying to your home airfield. Not as useful if you go touring with the trike and want to pop the wing down overnight - but nearly any solution for a non-folding trike has that limit.

Mike Cowlishaw
5th June 2012, 15:10
Actually some interesting ideas there .. get the control bar onto the trike keel before attaching the wing to the monopole. Then the weight of the wing holds the front of the trike down during the tricky bits ...

[Enters pensive mode. Maybe a hook or clip on the keel is needed, to prevent the bar destroying anything.]

Mike

Dave Smith
5th June 2012, 15:49
Nice Kestutis.
I like this sort of thing.
I'm developing a simple rigging aid for a friend's Cosmos at the moment and will post pictures when complete.

Dave

Kevin Armstrong
11th June 2012, 07:02
Some nice fabrication in there (from someone who used to run a fabrication shop).

As for that point about fly outs derigging, a cross-cable works nicely, with a pin in the end for detaching it.

Not as high tech but is does work well

Thanks Kestutis

Kev

Attached files http://cloudniner.co.uk/images/converted_files/115781=8597-parking-rig-1-kestutis.jpg (http://cloudniner.co.uk/images/converted_files/115781=8597-parking-rig-1-kestutis.jpg) http://cloudniner.co.uk/images/converted_files/115781=8598-parking-rig-3-kestutis.jpg (http://cloudniner.co.uk/images/converted_files/115781=8598-parking-rig-3-kestutis.jpg) http://cloudniner.co.uk/images/converted_files/115781=8599-parking-rig-2-kestutis.jpg (http://cloudniner.co.uk/images/converted_files/115781=8599-parking-rig-2-kestutis.jpg)

Bryan Plunkett
12th June 2012, 08:29
Sorry Kev I dont get it, can you describe the set up slowly for me :confused:

I know, but I am a Northerner!!

Kevin Armstrong
12th June 2012, 09:05
Don't want to hijack the thread Bryan, but here goes:-

Trikes sometimes struggle to get the basebar to pass the nose, so the pylon pivot has to be low, like the Blade and Quantum trikes. On the Trya the basebar drops onto the front of the seat and Jeremy made a channel for it to sit into, on the GT Fun the French just made the front strut banana shaped and trike short, but on my Magic there were no such compromises, John made the pylon telescopic instead so the pylon could 'stretch' over the trike nose, yet like the Fun, it can still have a short pylon pivoted at the top of the seat.

This looked OK but the bottom bolt that locks the pylon upright can be a bitch to get out if the wing twists and locks it, P&M don't like this aspect either. Ace have cured the niggle by making the base tube of the trike hinged and the pylon now has a conventional hangbolt at the top instead.

As I had the earlier version it didn't cause a problem as the trike is stored rigged on trolleys anyway, but at fly outs it was awkward to drop the wing for overnight camping. The solution was to use a top hangbolt like any other trike, scrap the telescopic slider, then enable the pylon to be dropped for hobbling by using a simple cross cable. This works well if the later pylon is retro-fitted to the earlier trike, so of anyone doesn't like the telescope idea, they can just buy a new pylon and hang strap and drop the wing over the trike keel.

The cable is held at each end using an alloy Halfords seat stem clamp, had to file out the internal step but this can be easier using a lathe, the clamp is two or three quid to buy. At one end it is a loop held by the clamp bolt, at the other a pin and saddle makes it detachable, the cable stows inside the fabric fairing.

At a fly-in the front strut is removed, basebar unhitched at one end and secured against the control frame upright with a velcro strap. Pull the bottom pivot lock bolt and drop the wing on top of the trike. To remove the wing completely, pull the hang bolt and slide the trike out while holding the tail of the wing keel, then push the wing onto its nose.

Only small snag is the hangpoint can flip sideways when rigging, but not a big issue with care.

Cheers

Kev

Bryan Plunkett
12th June 2012, 09:42
Cheers Kev & Kestutis, very ingenious

av1at0r
13th June 2012, 08:46
Having 'just' sold my Magic Laser this quick reply is just for comment.

Why is it only now - after owning a Laser for 2 years and struggling with the rigging and derigging thereof do I find that the new Lasers have been modded to overcome this shortcoming?

Surely it would be in the interest of all parties if 'any modification' embodied to new models were advised to all owners????

Regards
Paul

Kevin Armstrong
13th June 2012, 10:58
Hello Paul, PM me if you want to chat through with your phone etc.

Depends if you regard it as a fault, or just a design feature; we have to enter into SSDR eyes wide open, this isn't a 33K QuikR where Porsche drivers grumble about the quality of a switch, but a 10k flivver in the style of a rugged and simple Gemini Flash. Lot faster than a Dragonfly but the 447 drinks 12 litres an hour, as Chris Theakstone (who builds for Cosmik) says, chalk and cheese. It'll tour so camping at some distant site became feasible, helped by very good restance to rough air, with the downside of needing plenty of power to shove such a dead stable wing along.

I was OK with the telescopic rigging issue but decided that the cross-cable would be useful as the speed meant potential for touring, trike has various stowage bags around the seat and the telescope could be ignored provided you could drop the wing over the trike. As pulling the bolt was the hardest bit, I made a strong sleeve to plug over the existing pylon top, like the Chaser, and bolted the lower telscoping parts up solid. This stops the telscopic parts revolving to each other and locking the bolt; you put one foot on the trike nose, push with your right arm to relieve pressure on the bolt and it slides out (and back in) easily. I've still got 5m of the big special 4mm wall alloy tube if anyone wants to go that route, just call and I can give you a bit, but liability is, as with any SSDR, yours...

As this seemed handy for others to mod theirs the same way, I fed the info back to Ace Aviation, as a set of pdf drawings. To my surprise the guy seems utterly devoid of ego and unlike encounters I've had when modifying UK designs, happy to discuss customising his original for different applications. Eventually he came up with an even better idea, which was radical but ingenious; this was to hinge the centre keel just before the trike seat, so the entire trike can 'kneel' down and allow the wing basebar to drop over the nose. What is particularly handy is this makes the trike smaller for slotting into a hatchback, although his aim is to please those who like soaring wings and rigging each time, whereas my requirement is a machine you pull out of the hangar and fly away to another airfield at 60mph. The trike as is seems fine so haven't changed it.

So you can see this glass half empty (fault) or glass half full (flexible, prepared to customise). Ace have even changed the top hangpoint now so the hangbolt operates like others, where you can fold the wing down and pull the hangbolt at the top of the pylon to remove the entire wing. Ace prefer the 'kneeling trike' but I prefer to hitch the cross-cable with basebar folded up and pull a top bolt to remove the wing.

They can sell you a pylon and hangpoint assembly to change an existing trike to cross-cable derig, complaining about it as a shortcoming may be a little unfair though, any more than Blade owners complaining about the way their 912 trike rigs and has to be transported, compared to the later P&M Quik?

Kev


Paul Wilkinson wrote:
Having 'just' sold my Magic Laser this quick reply is just for comment.

Why is it only now - after owning a Laser for 2 years and struggling with the rigging and derigging thereof do I find that the new Lasers have been modded to overcome this shortcoming?

Surely it would be in the interest of all parties if 'any modification' embodied to new models were advised to all owners????

Regards
Paul

av1at0r
13th June 2012, 12:07
Hello Kev,

Point taken - I'll put 'Mr Angry from Wales' back in his box.

Regards

Paul