Suggestions for big stuntship

I am about to receive a PAW TBR .60 diesel engine as part of an engine trade with a fellow modeller. Apart from installing it in my lawnmower or upgrading the power plant in my Fiat Panda what sort of C/L plane should I consider putting it in.

It develops 1.25 bhp and weighs 515g (call it a pound) and get this, it can swing an 18 x4 prop but will be happy with a 12 x 8.

Is it worthwhile considering scaling up and existing design?

Any suggestions?

Cheers

CL helicopter???

The 4 inch pitch prop is a bit light for the rpm of the engine, but some of the 4-cycle engines weigh as much and can turn props that big. Essentially, any good 60 size plane would probably work. I think I would want to make sure it had the run characteristics that I was after before I would commit myself to building a plane for it simply because I have the engine. There is a lot of work and a lot of money that goes into a plane that size, and the engine choice can ultimately make or break it.

The main characteristic of the large PAW engines is that there is no 2-4-2 break or indeed any appreciable change of engine speed they just have stump pulling torque. Max RPM is in the 9-10k RPM range I agreee that the fine pitched prop is probably on the light side and I would be looking toards a coarser pitch and smaller diameter.

As yet, it is just a feasibility study that certainly not see the light of day this year though I am building up my upper body strength to cope with hand starting in anticiaption

Vernon,

Try contacting Tony Eifflaender at PAW. They have a website. The link is at Phil Brown's links page or Just Engines has a link. Email goes through Tony's brother, Paul.

Tony won the British Nats a few times in the 90's using the PAW 40 on a 650 square inch winged 'Freebird'.

Tony is a very congenial and helpful person. Ask him for a recommendation.

Magnum. currell

vernon, whatever it is it would have to be pretty solid. A 60 conventional diesel even if it is described as a big friendly lump still has a solid thump and your plane's nose will know about it real quick

I will be factoring in a beefed up front end into any design that I go for. I am all too aware of the serious vibes that might be encountered and will probably use composites in the construction of the front and may even resort to putting a glass fibre covering over the fuselage.

what ever I go for it will be a voyage of discovery even if it ends up digging a trench.

The biggest seperator between the realisation of the project and now is the number of models already on the 'must build' and 'gotta finish it off' list.

>Vernon,
>
>Try contacting Tony Eifflaender at PAW.
> They have a website.
> The link is at
>Phil Brown's links page or
>Just Engines has a link.
> Email goes through Tony's
>brother, Paul.

The obvious stre's one in the face. I live 40 miles from the PAW factory but the thought of contacting them had not crossed my mind, dohhhh!

>Tony won the British Nats a
>few times in the 90's
>using the PAW 40 on
>a 650 square inch winged
>'Freebird'.

I am familiar with the Freebird and have a kit of parts cut out waiting for bench space for constuction.
>
>Tony is a very congenial and
>helpful person. Ask him
>for a recommendation.

All of the Eifflanders are wonderful, I met them at the UK nats last year. One of my first engines in the early seventies was a PAW 0.09 and my current stable of engines (I refuse to call it a collection as they are all destined to be used) include around 12 assorted PAW engines.

Suggestion: Foam wing version of the Sweeper!

That out to be big enough!

And before you ask Vernon no I haven't flown yet - I have a U-key 35/Fox 35 80% ready which I will fly soon - the Fox is already run in so it gets over the problem of getting the Fuji 15 run in for the Hallam Swift.

How about a Senior Monitor for the PAW 60?

>And before you ask Vernon no
>I haven't flown yet -
>I have a U-key 35/Fox
>35 80% ready which I
>will fly soon - the
>Fox is already run in
>so it gets over the
>problem of getting the Fuji
>15 run in for the
>Hallam Swift.

If the Swift flies as well as the Hallam Peacekeeper you'll be a very happy flier.
>
>How about a Senior Monitor for
>the PAW 60?

I have the plans paired up with an MVVS .45. and is scheduled for a late 2001/early 2002 build. The original used a Fox .40 or .45 if I recall correctly. The PAW would be a tad too much I think. If I scale up the Monitor to a Senior Monitor Plus perhaps?.....

>I am about to receive a
>PAW TBR .60 diesel engine
>as part of an engine
>trade with a fellow modeller.
>Apart from installing it in
>my lawnmower or upgrading the
>power plant in my Fiat
>Panda what sort of C/L
>plane should I consider putting
>it in.
>
>It develops 1.25 bhp and weighs
>515g (call it a pound)
>and get this, it can
>swing an 18 x4 prop
>but will be happy with
>a 12 x 8.
>
>Is it worthwhile considering scaling up
>and existing design?

A 60 diesel? Sounds like a good thing to do amputations with!

I agree with Leonard, make sure it runs well enough to warrant the effort using some sort of "goat" model, before you go to the trouble of building something nice. I not sure how the power scales, but I would guess that you need to find a BIG airplane for this motor.

Might I suggest that you consider taking your favorite design and scale it up 15 to 20%. A trip to your local copy-print shop, Kinkos in the US, and set the copy scale at 115% on one copy, and 120% on a second copy.

You might have to do a weights and balance to figure whether the nose needs to be fiddled with for balance, but that's not a difficult thing to do.

As noted, the big diesel is a thumper and the nose should e bullet proof.

Best, John

I've thought about taking a Sig Twister and scaling it up 50%, i. e. from 48 in span to 72 in span, and putting a 60 in it. Bet a PAW 60 would haul that around OK.

>I've thought about taking a Sig
>Twister and scaling it up
>50%, i. e. from 48
>in span to 72 in
>span, and putting a 60
>in it. Bet a PAW
>60 would haul that around
>OK.
>
>Jim Thomerson

Just curious, are you going to "Fancherize" it, too?

Derek Pickard did a comparison of a few various approaches to .60 stunt in the last issue of Stunt News. One good thing about the PAW .60 is that it is lighter than the PAW .49. Pickard has some experience with the PAW's in stunt, and says the .49 and .60 need to be side mounted to run without a burp on corners. Given that, the benefit of a short nose with large cross section, I would be getting a set of plans for Dixon's big .60 T-Bird, using the wing and stab, modify the elevators, and build a P-47 fuselage. It's about 760 sq. inches if I remember correctly. The T-Bird II wing is a perfect match to the P-47. I'd put about an inch of dihederal under each tip to raise the leadouts to the vertical CG. You'll probably need 6" or 7" pitch props, and may need to build it as a take-apart to fit it in your Fiat. The prop too, maybe! Steve

Streak Times 2. Currell

Currell,

this looks like the cheapest proposition what balsa thickness would you suggest for the fuselage? Should I consider a full fuselage plywood doubler?

Vernon
(still a long way away from building a beast to cope with the PAW)