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Pushycat Option

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RC Plane Flyer17/09/2014 13:07:09
662 forum posts
19 photos

Has anybody had any thoughts of making a Pushycat with the motor at the front with a folding prop ?? Or an alternative adding some form of undercarriage ??

fly boy317/09/2014 13:18:59
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3535 forum posts
18 photos

Hi, had not thought of this option, but I am not building it too. Must be a better option as far as  launch safety is concerned, a good idea. Cheers

Edited By fly boy3 on 17/09/2014 13:19:34

Mowerman17/09/2014 15:15:45
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1542 forum posts
105 photos

An undercarriage would need to be fairly long to give prop clearance during take off and landing.

With the prop on the front it would no longer be a Pushycat ( the clue is in the name )wink

I think most people seem to use the 'underarm' launch although a bungee launch with the motor started juat after the line released would work (I used this system for my Wildwing after drawing blood on a couple of launches)

Another option would be to fit an EDF, with or without U/C.

Edited By Mowerman on 17/09/2014 15:18:18

Colin Leighfield17/09/2014 16:00:26
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5965 forum posts
2494 photos

There was at least one with an undercart and someone built one with a tractor and pusher prop, I'm sure. If you go back through the thread you should find them.

Craig Carr17/09/2014 18:21:04
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677 forum posts
430 photos
Posted by fly boy3 on 17/09/2014 13:18:59:

Hi, had not thought of this option, but I am not building it too. Must be a better option as far as launch safety is concerned, a good idea. Cheers

Edited By fly boy3 on 17/09/2014 13:19:34

To be honest launching underarm is a non event. Ken (NE1) Anderson made a demo video a little while back

ken anderson.20/09/2014 10:38:08
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8480 forum posts
773 photos

don't be put off by the under arm launch of smaller models-its an easy way to get them airborn-much better than overarm/javelin type of throwing....and once you have done it a couple of times----- its no problem....

ken Anderson ... ne..1 .under arm dept...

John Privett20/09/2014 11:09:39
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5988 forum posts
239 photos

After adopting Ken's method very early in the life of my Pushycat(s), launching has been very straightforward. Well, apart from the times I was a bit careless and launched crosswind... (must get on with the repairs!) It's had 180+ flights though, mostly with uneventful launches!

RC Plane Flyer20/09/2014 15:06:49
662 forum posts
19 photos

I will pluck up courage soon for an underarm launch. I currently have a Pinto which is underarm launch at 3/4 power but I am unable to get the same performance and feel for my Pushycat. The powertrain is as per forum but do I go for a level push or a slight nose up ? The video shows some confidence but I assume that is not a Maiden as Mr NE..1 has built others, what happens to the prop on landing ?? how many brake ???

ken anderson.20/09/2014 15:17:07
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8480 forum posts
773 photos

hello RC.........just put on the power and let your arm do the work-a gentle push and let go...nose up attitude...........the model is non demanding...on landing you will be surprised how much you can slow down to a flair landing......the prop looks after itself and the one's that rarely break are due to coming in too fast.......as I have mentioned previous the only way to make a mess of the launch is if you go off the wind.....the model is very light and will go with the wind and you will have to be very 'nippy' with the controls to correct it...and fly off...also as has been mentioned a folding prop set up can be fitted.......

 

ken Anderson...ne...1......... let your arm do the work dept.

Edited By ken anderson. on 20/09/2014 15:18:32

fly boy320/09/2014 15:46:33
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3535 forum posts
18 photos

Hi Ken, must say I see nothing at all wrong with your under arm PC launch method, as they say a "picture is worth a mill........" Re the prop, I have always found that cheap prop savers from G.S. have helped me in the past. Cheers

John Privett20/09/2014 18:34:25
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5988 forum posts
239 photos

Props on the pushycat, as Ken says, just look after themselves - I've not broken one yet. Or at least not on landing! (I think the mid-air collision I had with my first PC might have caused a broken prop - well it broke almost everything else on the model!)

RC Plane Flyer28/09/2014 13:52:56
662 forum posts
19 photos

Mission Abandoned. Motor moved to front no problem mounting on the balsa nose, battery moved back and good C Of G. Problem came with propping, original set up 8 x 4 at rear gave 200 watts so went for 8 x 4 folder at front but only got just over 110 watts, went for a 9 x 5 folder and got 180 watts go for it. The pull was good went for a nose up launch with a gentle push all went well then it lost lift and dived in. Well at least I have the Motor, ESC etc. for another model and can take it of sale in various web pages. Thanks for all the tips

fly boy328/09/2014 17:40:44
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3535 forum posts
18 photos

Very sorry to hear this RC, I don't know enough about electrics yet to give a reason of reduced watts, when changing from pusher to tractor configuration. Did you say you mounted motor to balsa, or did you mean ply former rear of balsa ? Cheers and comiserations..

RC Plane Flyer28/09/2014 18:37:35
662 forum posts
19 photos

Hi Fly Boy 3 I reduced the solid balsa front end by 2" then Araldite a good 3mm ply former on the front to take 4 screws for the motor cross plate ( I use araldite 24 hour for motor plates bulk heads etc. ) I was a little eager as I should have used a Prop Saver with the original prop to retain the power needed

NB Cutting my Balsa back left me 1/2" of solid Balsa on the front of the Fuselage

fly boy328/09/2014 19:33:15
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3535 forum posts
18 photos

Hi,RC, seems to me you did all the right things, So I don,t think the motor came off during the launch. I await with interest as to the failure of the maiden from the experts on the forum. One reason is that I am about to start a Pushycat build very soon. Cheers

john stones 128/09/2014 20:14:12
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10759 forum posts
1481 photos

It is every bit as easy to fly and launch as the above are telling you, landings it just glides in never broke a prop yet.

Get it built as plan, it's a good un.

John

onetenor25/07/2017 22:34:38
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1900 forum posts

You could launch by holding the booms . Just be quick getting your hands on the tranny and make sure the model is trimmed for straight and level with hands off. You could also use a dolly.Easier than fitting a u/c

AndyD26/07/2017 21:17:32
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712 forum posts
503 photos

this was on my wish list,how do I go about getting a plan now traps gone

Piers Bowlan28/07/2017 09:22:36
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1911 forum posts
50 photos

PM sent AndyD

Tony Harrison 228/07/2017 12:13:37
234 forum posts
3 photos
Posted by AndyD on 26/07/2017 21:17:32:

this was on my wish list,how do I go about getting a plan now traps gone

Me too: I'd come across the interesting PC and made a mental note that it would be interesting to build. I also had my eye very much on the Trap*et wood-pack for that 4' span Cessna Bird Dog featured in Q&EF magazine May 2013, along with one or two other such packs. Shame it's gone.I hope this post doesn't attract the attention of the censors here, who display a Kafkaesque fondness for controlling any mention of Trap*et...

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