monocoupe 90 clipped wing 26cc

[richard armstrong]

hi all

brought this clipped wing MC from rich at falcon in the process fo finishing it as it was 85% complete

cwmono.jpg (223.61 KiB) Viewed 14099 times

what glues do you used to glue wind shields in with

and advice on fitting, it as it has to sit round a curve nose,

[Alan Cantwell 1131]

cut a stiff card template, and i use pacer canopy glue, clean hands, and a wet cloth to wipe away surplus

[richard armstrong]

cut a stiff card template, and i use pacer canopy glue, clean hands, and a wet cloth to wipe away surplus

thanks alan

i pick ups some pacer glue this week

never thought about using card to get a good fit DOH!

[richard armstrong]

just wondering how to calculate the weight and engine size

7ft wing AUW with no electronics or tank 5.5 kg estimated!

i was looking into a 35 cc

anyone know of a online calcultor to give me the engine size?

[Alan Cantwell 1131]

no, but i will give you years of experiance, 26 ccm max, unless you want to be prop hanging it

[Alan Cantwell 1131]

no, but i will give you years of experiance, 26 cc max, unless you want to be prop hanging it

[richard armstrong]

no, but i will give you years of experiance, 26 cc max, unless you want to be prop hanging it

thanks alan

26cc - 30cc not looking to prop hang but am looking for a little extra umph, to get me out of the sh*tt**

i have look at the dle 30cc, and dla 30cc, i need to do a bit more investigation, but open to suggestion on make, my max budget is £225, at present, but every penny saved is more for another, airframe

unless i can find a 30cc unused or used

[Alan Cantwell 1131]

to much oomph, as you put it, could well put you in the crap you are trying to get out of, but still, your plane, have fun, you can always throttle back

[richard armstrong]

to much oomph, as you put it, could well put you in the crap you are trying to get out of, but still, your plane, have fun, you can always throttle back

mis read this sorry

[paul hughes]

Richard, Alan has been building and flying models for a very long time ( over 40 years) and has owned just about every commercial kit or model that has been produced. If he says 26cc max then thats what it is!
Why do you ask for advise and then tell people the advise is wrong! kind people are trying to help you.
As for cost, the smaller engine will be cheaper to buy and use less fuel, another plus is props are cheaper for smaller engines. Also the model will be lighter and threrefore easier to fly and land. The model you have is designed for a .91 2 stroke glow engine, which is about 15cc, so a 26cc petrol will be fine and about the right weight.
With the GeeBee model Ys we found that a 25cc powered model is no quicker than a 38cc powered plane, this is beause the airframe has so much drag it has a terminal speed and only a massive engine will pull it any quicker. Your monocoupe is the same span and although a high wing rather than low has a similar amount of drag.
In Short listen to Alan!

[Alan Cantwell 1131]

now i just feel old

[Phil Clark]

The DLA - BLE 30's are potent little engines..........way above what is recommended for this airframe. Fitting this much power is likely to cause you more problems than it solves, especially as a relatively inexperienced pilot (no disrespect). The saying 'you can never have too much power' isn't true to all airframe types. In a slow flying, lightly loaded type like this, it's definitely not what you want. This uses it's wings to fly not it's engine.

The 30's are also pretty light weight engines........you have an airframe with a VERY short nose and quite a long bulky rear end.......so why fit a light engine and run the risk of either having to shoe horn batteries further up front (where they probably weren't designed to go), or add extra nose weight.

This model is crying out for a simple, reliable Zenoah 26. It's more than enough power & being a little heavier than the 30's, it's 'useful' weight rather than a light engine + ballast. It's side induction, side exhaust so will fit in the radial cowl easily. Everything stacks up in the Zenoah's favour. Add 20 quid to your budget & buy one......

Phil

[richard armstrong]

The DLA - BLE 30's are potent little engines..........way above what is recommended for this airframe. Fitting this much power is likely to cause you more problems than it solves, especially as a relatively inexperienced pilot (no disrespect). The saying 'you can never have too much power' isn't true to all airframe types. In a slow flying, lightly loaded type like this, it's definitely not what you want. This uses it's wings to fly not it's engine.

The 30's are also pretty light weight engines........you have an airframe with a VERY short nose and quite a long bulky rear end.......so why fit a light engine and run the risk of either having to shoe horn batteries further up front (where they probably weren't designed to go), or add extra nose weight.

This model is crying out for a simple, reliable Zenoah 26. It's more than enough power & being a little heavier than the 30's, it's 'useful' weight rather than a light engine + ballast. It's side induction, side exhaust so will fit in the radial cowl easily. Everything stacks up in the Zenoah's favour. Add 20 quid to your budget & buy one......

Phil

thanks phil for the constructive advice i will take it on board,

[richard armstrong]

Richard, Alan has been building and flying models for a very long time ( over 40 years) and has owned just about every commercial kit or model that has been produced. If he says 26cc max then thats what it is!
Why do you ask for advise and then tell people the advise is wrong! kind people are trying to help you.
As for cost, the smaller engine will be cheaper to buy and use less fuel, another plus is props are cheaper for smaller engines. Also the model will be lighter and threrefore easier to fly and land. The model you have is designed for a .91 2 stroke glow engine, which is about 15cc, so a 26cc petrol will be fine and about the right weight.
With the GeeBee model Ys we found that a 25cc powered model is no quicker than a 38cc powered plane, this is beause the airframe has so much drag it has a terminal speed and only a massive engine will pull it any quicker. Your monocoupe is the same span and although a high wing rather than low has a similar amount of drag.
In Short listen to Alan!

i know alan been at this game for more years than ive been alive, and i respect his advice, and your advice all valid

on the note i will look into a z26 but partly have not looked at z's is 2 reasons is the side carb as i was looking an in line carb unless there a new version out? cost as it was as out side my reach , but that said there are some deals to have at the mo

i need to think????

[Alan Cantwell 1131]

more years than you have been alivem there goes that feeling old again

[richard armstrong]

more years than you have been alivem there goes that feeling old again

Alan, any of these fit for purpose for the coope mate

found these on ebay just wondering if it would be enough power, thought of taking a look at the second market first to see what out there,

http://www.ebay.co.uk/itm/Mackay-24cc-M ... 2a3e33f349

http://www.ebay.co.uk/itm/181425245978? ... 1423.l2649

http://www.ebay.co.uk/itm/26cc-petrol-e ... 3f3809929f

advice very welcomed

[Alan Cantwell 1131]

2of the links dont work, the 26 would be ok, but would need a huge chunk out of the firewall, ive just got back from weston park, were i was running the swapmeet, i saw about 4zenoah 23s not one was more than £50 quid, you should have gone

[richard armstrong]

2of the links dont work, the 26 would be ok, but would need a huge chunk out of the firewall, ive just got back from weston park, were i was running the swapmeet, i saw about 4zenoah 23s not one was more than £50 quid, you should have gone

wish i could have gone but finances dictated otherwise,

50 quit, bummer, if had known i would have ask for one to be pickup,

this ons is on the bay

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 1523091103

but wants to much for it

[richard armstrong]

http://www.ebay.co.uk/itm/Mackay-24cc-M ... 2a3e33f349

[richard armstrong]

is there a swap meet at cosford?

not sure when the next show is before cosford where there is a swapmeet