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PFM / Pat French Models

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Former Member25/01/2019 10:57:54
724 forum posts

[This posting has been removed]

kc25/01/2019 11:38:28
5839 forum posts
168 photos

previously someone said ply was more environmentally friendly than balsa.......surely not true as balsa trees are of a useful size & felled at about 12 years old ( according to an article in RCME ) which must be better than the time it takes for birch or poplar to grow to make the thin ply.

Edited By kc on 25/01/2019 11:41:23

Former Member25/01/2019 12:13:57
724 forum posts

[This posting has been removed]

Nigel R25/01/2019 12:15:28
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2602 forum posts
425 photos

I think that may be part of the attraction of poplar, kc, it's quite quick growing. Can also be farmed at 12 yrs like balsa.

And for our purposes, liteply is not so bad. It's not as hard as "proper" ply but I'm coming around to its merits, it's half the weight (ish) of birch ply, half the cost, cuts with a knife, and hardens up beautifully with CA (for screw threads and so forth).

That rough 4mm softwood ply sold at the DIY sheds works ok for some uses, too. Kind of a halfway house between soggy poplar and proper birch.

Stearman6525/01/2019 12:20:34
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769 forum posts
893 photos
Posted by kc on 25/01/2019 11:38:28:

previously someone said ply was more environmentally friendly than balsa.......surely not true as balsa trees are of a useful size & felled at about 12 years old ( according to an article in RCME ) which must be better than the time it takes for birch or poplar to grow to make the thin ply.

Edited By kc on 25/01/2019 11:41:23

I think laser cut ply for model aircraft is Ceiba Lite ply, not birch ply. Birch ply burns very easily when lasered & has to be protected by blowing compressed air on the cut & masking the underside. I'm not saying some. kit cutters don't use Birch, only that the mass produced stuff from China uses Ceiba, which is cheaper & more environmentally friendly to produce than Birch, I thinkwink

see **LINK**

Paul C.25/01/2019 12:27:18
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564 forum posts
139 photos

That giant Zlin still looks a great model , if only it was still in production sad.

Paul.

Nigel Dell25/01/2019 12:35:51
353 forum posts
24 photos
Posted by RichB on 24/01/2019 11:02:21:

I've still got a PFM Firecracker.

I recently refurbished it and fitted it with electric retracts and a new engine but it could do with a new canopy as I managed to crack the original and the repairs look a bit rubbish!

It does fly well and I do feel that there could be a market for the kits. Good luck with the project and I hope you can find a buyer to take it on.

Hi Rich can you remind me of the span of the Firecracker please?

I had the Jungmann and liked it so much that I got the giant Zlin I wanted the Firecracker next but got side tracked into something else that is not that memorable and have regretted it ever since, so much so that I am getting as much info I can on the Firecracker to be able to make my own, I like the piston engined one but the Turboprop is gaining more interest, they were all great flyers I seem to remember, certainly the two I had were, the Firecracker was the one that got away!

Colin Leighfield25/01/2019 12:48:45
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5733 forum posts
2381 photos

The amazing thing about the “Giant Zlin”, 86” wing span, was that it was fully aerobatic on a bog standard 61 two stroke. I saw one being flown with a 40! The Webra Speed 91 Dynamix was perfect for it and I still have that engine, so it might finish up back where it began if I do resurrect the one I bent. The other NIB kit is likely to finish up with a 120 4S though, I don’t think I would inflict electric on it.

When I built the first one I originally fitted a geared Webra Speed 61 because I thought the big low speed prop you could use with the (I think) 2:1 gearing would be ideal for the plane. It was odd to fit because the output shaft was offset, so the engine was fitted to the bulkhead below and to one side of the thrust line. It worked fine but the problem was that the straight gears were so noisy it exceeded our Db limits even then, probably in 1990! I had bought it from Jim Davies Models and he agreed to swap the front end for that from a standard rear induction Speed 61 and I still have that engine too, hardly ever run. Converting the plane to the 91 was the right thing to do. I think I used a 14”x6” prop on it. I must get it flying again, or build the other one.

kc25/01/2019 13:02:22
5839 forum posts
168 photos

There seems to be a market for established designs that are known to fly well. Firms like Belair produce sets of cut parts rather than complete kits. It appears that builders go for well known names rather than unknown designs, so PFM might be atractive for that reason.   It would appear that the designers sell their plans direct to builder but not the parts.  Belair sell cut parts but not the plans in most instances.   Different to the traditional kit business in the past.

Edited By kc on 25/01/2019 13:07:38

Stearman6525/01/2019 14:28:42
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769 forum posts
893 photos
Posted by kc on 25/01/2019 13:02:22:

There seems to be a market for established designs that are known to fly well. Firms like Belair produce sets of cut parts rather than complete kits. It appears that builders go for well known names rather than unknown designs, so PFM might be atractive for that reason. It would appear that the designers sell their plans direct to builder but not the parts. Belair sell cut parts but not the plans in most instances. Different to the traditional kit business in the past.

Edited By kc on 25/01/2019 13:07:38

Just had a look at those. Either the pound has dropped through the floor, or the euro has skyrocketed, the conversion Euro / dollar prices look the wrong way around, maybe I'm just tired.surprise

Michael West 121/02/2019 22:52:36
6 forum posts

Sorry for the delay in getting back - been out of the country for a couple of weeks and life also got in the way...

So, this is a last ditch attempt to do something with what is left.

I've tried a few places but no interest, which I kind of expected.

I had to move it from the storage location so its now sat in my house.

I have I believe a full set of manual templates for all the models. I have no of the other tooling for wing cutting, glass or vacuum form moulding.

I have for most, a couple of sets of all the foam parts that would need to be copied.

I have various part cut kits.

I have most of the vacuum formed stuff that you can take moulds from.

Likewise, I have I think cowls you could again make moulds from.

Plans wise I don't have a complete set - some were lost many years ago.

It needs a custodian by the end of next week - March 1st.

I do not have the time that it needs putting in to it.

I really do not want to consign it to history again but will if I have to....

Jon Laughton21/02/2019 23:00:24
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1158 forum posts
102 photos

I’ve tried to contact you to talk business to no effect .

Frankly you are rude and wasting peoples time on this forum.

As I have said previously the moderators should close this thread and if possible ban you from wasting others time

Michael West 122/02/2019 09:29:24
6 forum posts

Sorry, but I still have no private message from you via the forum on here.

I don't see how that quite constitutes being rude but there we go....

I will make attempts elsewhere....

Former Member22/02/2019 09:48:44
724 forum posts

[This posting has been removed]

Denis Watkins22/02/2019 09:53:33
3552 forum posts
166 photos
Posted by Michael West 1 on 22/02/2019 09:29:24:

Sorry, but I still have no private message from you via the forum on here.

I don't see how that quite constitutes being rude but there we go....

I will make attempts elsewhere....

I too sent you a private message, sometime back that remains unread

You should see a flashing envelope below your name box

Pete B - Moderator22/02/2019 10:09:17
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Moderator
7531 forum posts
729 photos

It seems clear that this offer hasn't generated much interest and I don't want the thread degenerating into more disagreement. I see that a PM I sent to one of your accounts on 26/1 hasn't been read, either.

Perhaps you'll have more success elsewhere, Michael?

I'll lock this thread off now....

Pete

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