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by Dave Hayfield
July 24th, 2010, 6:49 pm
Forum: General Discussion Topics
Topic: Half scale model Bleriot channel attempt.
Replies: 6
Views: 2723

Re: Half scale model Bleriot channel attempt.

Just seen your post Rob. Yes Thanet Model Flying club did a cross channel event over ten years ago. The model used was a Dave Boddington prototype Hurricane which was going into kit production and we did the kit review for him, some kit review!!! The time co-incided with an event at RAF Manston so w...
by Dave Hayfield
May 2nd, 2010, 12:58 pm
Forum: Technical Help required
Topic: ht lead sheilding
Replies: 25
Views: 8452

Re: ht lead sheilding

Must admit that I have never fitted a throttle servo that close to the engine but before doing expensive things a ferrite ring on the servo lead might be worth a try.
by Dave Hayfield
May 1st, 2010, 9:47 pm
Forum: Technical Help required
Topic: ht lead sheilding
Replies: 25
Views: 8452

Re: ht lead sheilding

Yes Bob I agree, have had many Zenoah engines operating with several different radio systems and never had to use any shielding. If interference is present I would be tempted to look for another cause such as the correct spark plug.
by Dave Hayfield
May 1st, 2010, 12:45 pm
Forum: Technical Help required
Topic: Z62 Cutting Out Problem
Replies: 3
Views: 1580

Re: Z62 Cutting Out Problem

Hello Pat, as a long time user of Z62's I reckon your prob is due to the flexible flaps in the carb. After a while the stuff that the diaphragms are made of become less flexible and if not forced to move by opening and closing the throttle settings (as you said, the prob is not there when you use th...
by Dave Hayfield
March 14th, 2010, 11:53 am
Forum: General Discussion Topics
Topic: Giant Models at Public Shows
Replies: 19
Views: 6642

Re: Giant Models at Public Shows

You are right Bob about the Cosford Pageant, the idea was great but this system has to be even more disciplined than ever. The public saw what seemed to be a well organised display but behind the scenes the schedule was running about 2 hours behind at the end of the day. This was mainly due to pilot...
by Dave Hayfield
March 11th, 2010, 4:45 pm
Forum: General Discussion Topics
Topic: Giant Models at Public Shows
Replies: 19
Views: 6642

Re: Giant Models at Public Shows

Having had the daunting task of organising flying slots at many public shows over the years the old saying that 'you can never please all of the people all of the time' has never been more appropriate. . Spectators pay to see 'special' features at shows, this means models that you won't see at your ...
by Dave Hayfield
January 17th, 2010, 11:27 am
Forum: General Discussion Topics
Topic: Contra Rotating Props
Replies: 13
Views: 5901

Re: Contra Rotating Props

Dave Berry, have tried to get contra prop piccies on this site but too much info for it to accept. If you want I will email complete pages to you from mags, let me know address.
by Dave Hayfield
January 16th, 2010, 1:02 am
Forum: General Discussion Topics
Topic: Contra Rotating Props
Replies: 13
Views: 5901

Re: Contra Rotating Props

Hello Dave Berry, the Gannet you mention with the contra props is another one that I found whilst searching thro' old Aeromodellers but it looked a bit 'Heath Robinson' compared to the one I mentioned to Benjamin. Have those photo's as well if anyone wants to have a look.
by Dave Hayfield
January 15th, 2010, 12:26 am
Forum: General Discussion Topics
Topic: Contra Rotating Props
Replies: 13
Views: 5901

Re: Contra Rotating Props

Hi Benjamin, your query regarding contra props ran a bell with me so I searched through some old mags....30 years or so old and found what I was looking for. Two 10cc engines mounted so they face each other with each shaft driving a coaxial gear system. The rear engine driving the inner prop driver ...
by Dave Hayfield
September 28th, 2009, 11:08 pm
Forum: General Discussion Topics
Topic: cell phone ?
Replies: 18
Views: 7995

Re: cell phone ?

As a long time operative of transmitter controls at various venues all over the country I have seen only 3 incidents of cell phones causing probs with transmitters. When it does happen the memory in the Tx is scrambled or removed and the equipment has to be re-programmed. I think that the proximity ...

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