I am looking for a IMAC/3D plane. I already have a Synergy 90 3d with YS 110 and am looking for a scale looking aircraft for a YS120 I have looking for a home. After the Synergy anything has a tough act to follow.

I was first looking at the Flair Giles 120, but like the idea of building one, winter project. I like my little kyosho cap so I was thinking of a larger one. How does the giles 120 compare and what is the Cap like for 3D? The 120 on an 8lbs aircraft should be good. Will the Cap build down to this?

Cheers

Kris

giles wont do it, the Glens cap 'll do it all, i have top say, im mitally impressed with my mates with a super tiger 20/23, unlimated vertical, the lot, also will fly smooth if you reduce the throws and add a higher pitch prop, to give it some speed. the plane is extremly light if you build it stock, no need to lighten it up. all i say is:

beef up the UC plate

the le is quite thin

thats all
ian

Hi,
What about the Glens models extra 330?
Cheers
Rich

Hi,

Thanks for the replies so far.

I prefer the look of the Cap, I believe the 330 builds heaver, but as it is still a new kit, I don’t know if any body can back up the plane with a good flight report. The YS is a power house, but I don't want to make it marginal by have an airframe 1/2 to 1lbs heavier. It is still looking like the Cap for me.

Cheers

Kris

you'll have made a good choise then! its a very good model, even if you muck up the build, my mate needed a 7" trim tab on the right wing, without this the aircraft would only show the warped wing when flyin 45* upline, it would slowly roll left (or right, aerodynamics :spinnyeye )

I e-mailed Glen a while ago asking if he was gonna make a 68" sukhoi (i love the aircraft, full size and model), but he said it was inpractical cos of the round fus

I guess toolong to make a kit must be prity high. I would emajine that he wouldn't seel enough to cover the costs.

So what is the stalled performnce like with the 68" Cap?

Kris

no stall, hardly, floats around

I flew a 68 inch glens cap with an asp 120 in it for a year, and then put a moki135 in it. I never really got to know the moki combo as I lost it in a mid air.

With the ys120 you are looking at 8 1/2 to 9 lbs - with very good vertical - maybe unlimited.

As an IMAC plane its fine, may be a little on the small side - most IMAC competitors seem to fly big. But there is no reason why you cant be competitive with the cap. The design of the cap is such that Knife edge will require a tiny amount of aileron mix and a fair bit of elevator mix. Snaps and tumble manouevers are its forte. My guess is that the Extra may be a slightly better IMAC competitor, although I havent flown the Extra.

3d - its very good. Harriers are stable, knife edge loops are excellent (use a powerfull servo 6KG torque or more). KE spins and blenders were awesome.

The build is a doddle. As Edible says think about beefing up the u/c mount, as once you break it, due to its construction its difficult to repair. Make the leading edge a bit blunter at the tips if you want to 3d more than IMAC.


good luck

Chris

On Glens website, the weight range is given as starting at 7.5 lb. Do you think this is possible? I would like one for my OS 91 FX and at this weight it would work well, but once up to 8 lb, it would need a bigger engine.

I would rather go for low weight, plus don't really want to buy a new engine.

I had the 58" version, and really liked it. Unfortunately only lasted a little over a month then lost due to a radio fault.

the problem will be getting the c of g far enough forward.

With the asp 120 I still had to add a bit of weight to the front.

It might be do-able if you get the battery right under the engine, and the servos for rudder and elevator on closed loop with the servos as far forward as possible. It would be a bit of a faff to do though.......

Chris

thanks Guys,

I think with the YS I may have enough weight in the front to put the elevator servos on the tail. ie one for each surface and the rudder on closed loop. I guess if there is not enough weight forward I could always put an elevator servo, or two in the front and set up a close loop for them. Servos I was thinking of HS 5925 or 5845 on 6V. This setup works very well in the Synergy 90 3d. I guess the fuz will break before a servo gives way.

As far as the IMAC is concerned I am looking at more a large-ish scale aerbat that will 3D. May be do some local comps.

Cheers

Kris

How much deviation from scale are you permitted in IMAC.. the CAP need alteration to enhance performance... (not Glens specifically but any CAP produced to scale outline)

I know TOC was 10% but dont know about IMAC

I'm pretty sure its 10% as well, measured from the fuselage datum. The control surfaces do not have to be scale, so there is some scope to change their shape.

Personally I really like the way the cap looks, and whilst its low wing and high tail isnt the ideal IMAC layout I can live with it. I really liked its 3d performance too.

Kris1 - with the YS balance shouldnt be too much of an issue. It should make a really good combination. The 68inch airframe is suprisingly rugged apart from the undercart mount, so it will take just about as much abuse in the air as you can dish out.

Chris

Hi,
As I understand, the 10% rule only applies to National and International classes. However hinge lines may fall anywhere and airofoil sections maybe changed. I also understand that the Glens Caps are fairly close to scale and well within the 10% rule...well the 30% is, I assume the 68" one is too. As for size theres nothing stopping you flying a 68" cap in IMAC and doing realy well.
Regards
Rich