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ALEXGTPROPELLERS
Joined: 19 Jan 2011
Posts: 32
Location: Italy
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 Posted: Mon Jan 24, 2011 10:04 am Post subject: GT YAK blades |
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Buongiorno to all.
A short introduction might help YAK/CJ fellows to understand a little more about GT Propellers products and company mission.
We ‘re in propellers business since 1969 with a family business conduction. 12 employees.
In 42 years of business over 30.000 propellers have been produced.
Fixed pitch ,constant speed ,ground adjustable.
We supply certified or experimental propellers,serial production or customized.
145 maintenance certification and sell of other propellers brands is in progress.
We got a special propellers production dedicated to vintage aircrafts.
Presently the biggest Vintage propellers we produce are : the 2.48,98 “ fixed pitch for the Boeing Stearman and the 3.40,134”constant speed,4/5 blades, for the RR Merlin/Spitfire.( various Spitfire models )
The most complex prop we have in production is the controrotating prop for the Bugatti racer replica.
We are partners in the adventure. www.bugatti100p.com
In house we work on wood ,composite and metal.
Most popular aircrafts/engines fly GT propellers.
We have worldwide sell and good business relationship with international propellers colleagues as for example :
Sensenich in USA ,Helice Clerici in Argentina ,Ausprops in Australia as well as many others.
Little GT subsidiary is based in Montreal managed by our partner Mr.Humberto Dramisino.Humberto(at)gt-propellers.com
During our career we had the pleasure to collaborate with various famous aircrafts designer,as for example Stelio Frati, known for SF260,Falco,Picchio,ecc.
Ermanno Bazzocchi father of Aermacchi MB 339,still in service with Frecce Tricolori.
Prof. Pascale, founder of biggest european LSA aircrafts company call Tecnam.( From 1995 over 3000 propellers have been produced for Tecnam)
The GT Yak adventure started 13 years ago when YAK Italia landed locally with the early YAK52/50, imported from the ex east block.
( Not so far from Italy ! )
Some time later one of these pilot came to our door with his broken V-530 blades completely damaged.
He said : can you help me? I do not know where to get new one !!
My boss said : NO WE CAN BUILT NEW ONE BUT NOT NOW !
After a long engineering and testing period,8 forced months included all weekends, the GT YAK blades were ready to take off using the original metal ferrules.
These never seen before metal parts was kindly supplied us By Mark Jeffries (at) YAK UK. ( only sample 0001 and 0002 )
We were the first company to adopt a different blade design and 2.50,98” diameter on V-530 hubs.( A couple of particular customers fly with 2.75,108 “ )
At that time we have tried to collaborate with Vperod people, but they were no longer interested in propellers.
Some experience exchanged with various russian aerobatic competitors and in particular meetings with the well know unlimited aerobatic champion Kairys Jurgis, were fundamental to optimize the latest blade version.
( Very nice person to deal with )
The sample 0001 and 0002 had ground cooling problem immediately solved.
From that time, all new blades are produced with new metal ferrules wich has been improved internally.
The static blade retention pull test performed on 5 different samples, showed a safety factor of 13/1.
Our choice of maintain the mixed wood blade construction was adopted for more reasons.
To preserve the proven affordability showed all these years by the original V-530 blades.Of course with an upgrade design .
GT design is different to V-530 in blade twist, airfoils, diameters, surface, carbon skin, composite leading guard, scimitar tips design, metal ferrule.
Wood blades facilitate the european certification procedures.
Now under negotiation with EASA authority.
Another important point is that WE LOVE WOOD PROPELLERS construction !
We also produce all carbon blades but we do not have same feeling for these as we have for wood.
The little scimitar tip design gives a modern looking but not too modern .
YAK 52 nose is not properly styled for modern appearance ,we think !
The GT M-14 blades safety, greater YAK performance all round, lower noise, fuel saving hourly, about 15 liters/4 usg less,low maintenance costs, made us being in compliance with the severe propeller selection requested by solo worldwide yak 52 producer: Aerostar.
From 2008 we supply an interesting M-14 blades numbers yearly dedicated to military trainers exported in some asian airforces.
The contract was reconfirmed for 2011 some days ago.
Last summer the SN 00400 was produced and delivered to our Australian agent.
We really must say thanks to YAK blades experience because we have extended our know-how on engineering and production of bigger propellers as for the Hurricane,Spittfire,P-40.YAK 3,ect.
The influence of YAK propellers system is clearly visible in our smaller constant speed propellers too Rotax/Lycoming/Continental/autoconversions
Spinner.
We made a 480 /19” carbon spinner dedicated to V-530 hub fitted with
V-530 blades or GT.
Nice looking ,perfect cooling .
Different application of the back plate from russian spinner.
Our back plate require a spacer where we allodge it. ( no two halfs ).
A new oil tube longer is required.
The system is very solid and perfect to make a real dynamic balance.
New blades, good static balance, solid back plate spinner and an accurate dynamic balance made the all prop package very very smooth.
( two samples are in service since last may )
This spinner engineering and rnd made the price little too high compared competitors, so we have decided to stop the project for the moment.
Actually we are priced at 2.400,00 Euros,3.350,00 Usd.
At this price we found serious interestment only in military application.
All deposite advanced us have been returned or absorbed in new blades purchase.
During the summer we will decide if proceed or not.
AIBB report
Next days I’ll be more precise on the AIBB report and the fancy prop failure invented by a UK. LOM customer.
http://gtpropeller.com/
Thanks to all.
Ciao Alex
GT Propellers
Via del Commercio, 7
47838 Riccione (RN) Italy
Tel. +39 0541 69 33 99
Fax +39 0541 69 33 31
www.gt-propellers.com
info(at)gt-propellers.com
ENAC 21 P CERTIFIED
Unica ditta italiana di eliche certificate
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cpayne(at)joimail.com
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| Posted: Mon Jan 24, 2011 2:35 pm Post subject: GT YAK blades |
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Buongiorno Alex,
So does all this text you wrote on the Yak-list mean that we will see a set of those prop blades on a Yak-52 or a CJ-6 at either Sun-n-Fun or Oshkosh? I have tried to communicate with "Humberto" via email numerous times but something got lost in translation.
It's not the Talk I'm interested in, It's your prop blades on one of our airplanes Walking the Talk, that will sell me on this prop. Quotes from your Engineering department, filtered through Marketing may prove difficult to translate into sales.
Craig Payne
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wise(at)txc.net.au
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| Posted: Mon Jan 24, 2011 3:23 pm Post subject: GT YAK blades |
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G'Day Craig,
I have found that whilst there is a slight com problem with Alex from GT props in Italy, with a little bit of patience on both sides it seems to resolve itself and all works out fine.
I am running a set of GT blades on our 18T and have sold some blades for Yaks here in Australia.
This came about as I was looking for alternative blades to replace the V-530 blades.
Whilst there were no GT blades fitted to M14P in Australia, plenty of others, I decided to buy a set as they are less than half the cost of a MT prop.
Turned out to be a good decision.
As I have previously mentioned, there is a notable performance increase and is very noticeable during aerobatic manoeuvres.
In fact, I sold a set of Blades to replace the original V-530 blades to a bloke that has built, and is flying, a Culp Special with M14P.
He reports less take off distance, better climb performance and cruise and far less turbulence around the cockpit area that was created by the vortex of the old blades.
It is as Richard so nicely explained, be it a set of GT or Whirlwind blades or whatever, the fact that all these blades are of modern design incorporating modern technology, there has to be a improved performance, but it would be nice to see some actual test results.
I have a spare M14P engine and I had intentions of upgrading the supercharger with a kit supplied by Richard Goode and also replacing the pistons with a set from Monty Barrett.
This would have given a little over 400hp and I am totally happy running the blades with that H.P.
Unfortunately I have had to temporarily put this project on the backburner.
These blades, as will the V-530, will also simply disintegrate in the event of mishap.
It is a shame that there are difficulties with Humberto and in view of that, should you be interested in a set of blades, I can perhaps circumnavigate sourcing blades from your North American rep, Humberto, and organize to supply a set of blades for M14P direct from factory thru my account.
Hope this helps,
Cheers from Downunder,
Chris.
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radiopicture
Joined: 23 Jun 2008
Posts: 263
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| Posted: Mon Jan 24, 2011 5:05 pm Post subject: GT YAK blades |
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I can facilitate blade purchases here in the USA. Contact me off list.
On Jan 24, 2011, at 6:20 PM, Chris Wise wrote:
[quote]
G'Day Craig,
I have found that whilst there is a slight com problem with Alex from GT props in Italy, with a little bit of patience on both sides it seems to resolve itself and all works out fine.
I am running a set of GT blades on our 18T and have sold some blades for Yaks here in Australia.
This came about as I was looking for alternative blades to replace the V-530 blades.
Whilst there were no GT blades fitted to M14P in Australia, plenty of others, I decided to buy a set as they are less than half the cost of a MT prop.
Turned out to be a good decision.
As I have previously mentioned, there is a notable performance increase and is very noticeable during aerobatic manoeuvres.
In fact, I sold a set of Blades to replace the original V-530 blades to a bloke that has built, and is flying, a Culp Special with M14P.
He reports less take off distance, better climb performance and cruise and far less turbulence around the cockpit area that was created by the vortex of the old blades.
It is as Richard so nicely explained, be it a set of GT or Whirlwind blades or whatever, the fact that all these blades are of modern design incorporating modern technology, there has to be a improved performance, but it would be nice to see some actual test results.
I have a spare M14P engine and I had intentions of upgrading the supercharger with a kit supplied by Richard Goode and also replacing the pistons with a set from Monty Barrett.
This would have given a little over 400hp and I am totally happy running the blades with that H.P.
Unfortunately I have had to temporarily put this project on the backburner.
These blades, as will the V-530, will also simply disintegrate in the event of mishap.
It is a shame that there are difficulties with Humberto and in view of that, should you be interested in a set of blades, I can perhaps circumnavigate sourcing blades from your North American rep, Humberto, and organize to supply a set of blades for M14P direct from factory thru my account.
Hope this helps,
Cheers from Downunder,
Chris.
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radiopicture
Joined: 23 Jun 2008
Posts: 263
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| Posted: Mon Jan 24, 2011 5:05 pm Post subject: GT YAK blades |
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These blades were at Osh Kosh.
On Jan 24, 2011, at 5:32 PM, Cpayne wrote:
| Quote: |
Buongiorno Alex,
So does all this text you wrote on the Yak-list mean that we will see a set of those prop blades on a Yak-52 or a CJ-6 at either Sun-n-Fun or Oshkosh? I have tried to communicate with "Humberto" via email numerous times but something got lost in translation.
It's not the Talk I'm interested in, It's your prop blades on one of our airplanes Walking the Talk, that will sell me on this prop. Quotes from your Engineering department, filtered through Marketing may prove difficult to translate into sales.
Craig Payne
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wise(at)txc.net.au
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| Posted: Mon Jan 24, 2011 9:39 pm Post subject: GT YAK blades |
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G'Day Eric,
Glad to hear that.
Are you running a set of GT Blades? And if so, how do you find them?
I would be interested to know the price of the Whirlwind blades.
Cheers,
Chris.
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dsavarese0812(at)bellsout
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| Posted: Tue Jan 25, 2011 4:41 am Post subject: GT YAK blades |
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I recently installed a set of Whirlwind blades on a Yak 52. The
aircraft owner paid $6K USD for them. I'll be installing another set on
another Yak 52 in a couple of weeks along with Whirlwind's new spinner,
which looks a lot like the big spinner on the MTV-9 prop. I believe the
Whirlwind spinner is $1.5K and fits the V530 hub regardless of whether
the the blades are Whirlwind, GT or the original Russian paddle blades.
Speaking of Russian blades, if anyone is interested in a pair of Russian
blades which were removed from the Yak 52 with the Whirlwind blades,
contact me off list at dsavarese0812(at)bellsouth.net. Have them at a good
price.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (cell)
Skype: Yakguy1
www.yak-52.com
On 1/24/2011 11:23 PM, Chris Wise wrote:
[quote]
G'Day Eric,
Glad to hear that.
Are you running a set of GT Blades? And if so, how do you find them?
I would be interested to know the price of the Whirlwind blades.
Cheers,
Chris.
--
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radiopicture
Joined: 23 Jun 2008
Posts: 263
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| Posted: Tue Jan 25, 2011 5:14 am Post subject: GT YAK blades |
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Hi, Chris...
Yes, I have a set on my Yak-52, and they've been great. The main advantages: Very smooth and any balancing needed was due to the hub, not the blades. Obvious increase in thrust on the ground roll, which is shorter. Pull off the runway is more dramatic. After that, climb is a bit better, and cruise pretty close to the stock blades. The finish is lovely, like most modern propellers and the leading edge is bullet-proof. Other than that, I like the fact that there have been many sets of these in use for several years, and they're available. The price is right in there with the other (new) blade alternatives (off list if you want details).
With the old blades in short supply, I think we're lucky to have all of these options in a niche market. If you've seen the Whirlwind restoration of the old blades, you know what kind of work they do, but of course, you need to start with a set of (old) blades, which you may not have available. If you had to get some used blades, then have them restored, the price is usually pretty close. The new blade options that are being developed now are coming from people we all trust. Without George and Cliff, Jill and Carl, Dennis, Doug, Richard, Jim, and I know I'm forgetting a few, we'd be in trouble. Having said all of this, we've gotten to know GT, mainly because they've been at some events in our region. When you meet them face to face, you're very impressed with their propellers and what they've been doing over the years. I guess we're "spoilt for choice" as the British might say.
Stay Dry... -Eric
On Jan 25, 2011, at 12:23 AM, Chris Wise wrote:
[quote]--> Yak-List message posted by: "Chris Wise" <wise(at)txc.net.au (wise(at)txc.net.au)>
G'Day Eric,
Glad to hear that.
Are you running a set of GT Blades? And if so, how do you find them?
I would be interested to know the price of the Whirlwind blades.
Cheers,
Chris.
--
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ALEXGTPROPELLERS
Joined: 19 Jan 2011
Posts: 32
Location: Italy
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| Posted: Wed Jan 26, 2011 10:07 am Post subject: Re: GT YAK blades |
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| cpayne(at)joimail.com wrote: | Buongiorno Alex,
So does all this text you wrote on the Yak-list mean that we will see a set of those prop blades on a Yak-52 or a CJ-6 at either Sun-n-Fun or Oshkosh? I have tried to communicate with "Humberto" via email numerous times but something got lost in translation.
It's not the Talk I'm interested in, It's your prop blades on one of our airplanes Walking the Talk, that will sell me on this prop. Quotes from your Engineering department, filtered through Marketing may prove difficult to translate into sales.
Craig Payne |
HI CRAIG and all
The blades were (at) OSH 010 on Eric 52 or Rick SU.Sorry not sure wich plane but blades were there.
I'm organizing these days with my Bugatti fellows for display location and GT propellers and part of the saff will be at OS 011.
Will be a pleasure meeting M-14 people.
Now we are expanding so our presence at these two events will became regular in the near future. We did not came before because we were not properly organized as company to serv the US aviation market.Privatelly I came 4 times or even more.
We got the capability to operate on CJ hubs,replacing metal blades but I'm not sure if engineering a new blade and keep 280 hp will be possible obtain better performance .HonestlyI have not spend much time considering it.We have invested alot in Hartzell blade retrofit.
Any one tested different prop on the CJ with original engine ?
In any case wood or composite blades runs smootly compared metal.
Humberto told me that you phone him and he always gave the proper replies to your enquires.
For any help contact me directly.
Thanks Alex
www.gt-propellers.com
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