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bill(at)yakrobatics.com
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 Posted: Tue Feb 01, 2022 1:45 pm Post subject: CJ6A Huosai Replacement Blades |
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What’s the latest on these blades? I’ll be hanging a new engine soon and would like to see if these will be going with it or not.
Performance comparison? Pricing? Availability?
And I KNOW I’m not the only one hawking this.
Thx
Pirate
Sent from Bill's iPhone
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richard.goode(at)russiana
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| Posted: Wed Feb 02, 2022 12:51 am Post subject: CJ6A Huosai Replacement Blades |
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We are now in the final stages of testing our up-rated Housai which is currently developing 300 hp at only 2300 rpm, so we are confident that it will exceed are planned 330 hp, at higher rpm but we will publish all the results very shortly.
We are confident that the existing Chinese propeller is both perfectly safe and can absorb the additional power, but clearly it is a very old-fashioned and inefficient aerofoil section, and in order to really maximise additional power one does need a better propeller. We are agents for MT, and they have done all the preparatory work to making a version of the MTV-9 on a hub to fit the Housai spline. But, although I know it would be a fantastic propeller, it will be very expensive, and we have to order six new propeller is at around Euro 16,500 each!
In consequence have been pushing Alex at GT propellers to offer an alternative, which he says he is about to, but this has been going on for some time. Critically, I've said to him that he must have a performance comparison against the standard propeller with the same aeroplane on the same day and in carefully measured conditions. As yet he hasn't provided this comparison which he really should in order to sell his propellers.
I'm keen to support him, and I hope that this will happen!
RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode(at)russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.
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jacques
Joined: 06 May 2009
Posts: 36
Location: Pessac, France
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| Posted: Wed Feb 02, 2022 6:01 am Post subject: Re: CJ6A Huosai Replacement Blades |
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Richard,
I have been thinking about a 3 blade propeller for the huosai for a long time.
I asked Alex from GT if he could make a 3 blade hub using his special blades for the CJ 2 blade propeller or other blades, but he is working on it. I haven't heard from him since.
I think we talked together about a MT propeller with 3 blades for the Huosai and I showed you that there was an MT9 propeller for the Jacobs with a splined shaft.
I asked Mt if they could just change this hub to the Huosai and gave you the information but as an individual MT did not respond.
Following our conversation you talked to MT about it and they saw this hub and they started thinking.
It's a shame that MT is charging a lot for the first 6 propellers instead of making them at the same price as the others, betting on the willingness of CJ owners to buy more.
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richard.goode(at)russiana
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| Posted: Wed Feb 02, 2022 6:48 am Post subject: CJ6A Huosai Replacement Blades |
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Hello Jacques – firstly I don't think the Housai spline is exactly the same as the Jacobs. Certainly MT told me that they would need to design a slightly different hub. In the real problem is that they are so successful in selling propellers that they can seemingly ask any price! But if I had real interest from 6/8 Housai owners, I believe I could negotiate a better price with MT. And as far as Alex is concerned, I'm extremely keen that he should succeed, but he simply will not do a back-to-back test with his new propeller and an original Chinese propeller indicating static thrust; rate of climb; speed et cetera, and without this information, I don't believe anyone will order one of his propellers!
RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode(at)russianaeros.com
www.russianaeros.com
WORLD LEADERS IN RUSSIAN SPORTING AIRCRAFT & ENGINES
In partnership with Aerometal Kft, Hungary.
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jlpartington(at)reagan.co
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| Posted: Wed Feb 02, 2022 7:18 am Post subject: CJ6A Huosai Replacement Blades |
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having flown next to a stock Yak-52 with my CJ-6 it is clear prop design is a huge factor.
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jacques
Joined: 06 May 2009
Posts: 36
Location: Pessac, France
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| Posted: Wed Feb 02, 2022 11:31 am Post subject: Re: CJ6A Huosai Replacement Blades |
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| richard.goode(at)russiana wrote: | | Hello Jacques – firstly I don't think the Housai spline is exactly the same as the Jacobs. Certainly MT told me that they would need to design a slightly different hub.-- |
I know, and it is why I have asked them to built one for the Huosai as they have one for the Jacobs : same hub just machining the splined to huosai.
Very easy.
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