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Re: [Small4-strokeEngines] Re: Ace Aviation Redrive

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  • william esker
    Hey Kev, after reading all your posts and watching all the vids, I have a couple more questions. How many hours are on it now? What pitch is the prop set at?.
    Message 1 of 13 , May 9, 2013
      Hey Kev, after reading all your posts and watching all the vids, I have a couple more questions. How many hours are on it now? What pitch is the prop set at?. and what climb rate do you get on a standard day?[sea level/70f]. I'm really think of doing this on my Weedhopper!, Thanks, Bill 

      --- On Tue, 5/7/13, Kev A <kevin@...> wrote:

      From: Kev A <kevin@...>
      Subject: [Small4-strokeEngines] Re: Ace Aviation Redrive
      To: Small4-strokeEngines@yahoogroups.com
      Date: Tuesday, May 7, 2013, 3:31 PM

       
      Shallow dish high compression pistons
      Billet con rods
      High lift roller tipped rockers
      Stainless exhaust valves
      'rev kit' (valve spring packers)
      Billet valve caps
      K&N air filter adaptor to carb
      Carb from 990 cc/61" engine
      Open out manifold and polish ports
      38" per cylinder tuned length exhaust tubes
      8° more advance mounting plates on ignition coils
      Thinner head gaskets
      Chevy grind cam

      All from Al Hodge of Performance Vee Twins, NC.

      Only thing of his I don't recommend is the plate under the inlet elbow to join up the manifold tracts, caused bad running, keep the inlet tubes separate

      Cheers

      Kev

      --- In Small4-strokeEngines@yahoogroups.com, william esker <wldbl55@...> wrote:
      >
      > I assume your Vanguard was originally the 23hp twin. Other than stripping it down and removing the governor, what else gave you the 30 hp? I'll look thru the postings too.  Bill
      >
      > --- On Mon, 5/6/13, Kev A <kevin@...> wrote:
      >
      >
      > From: Kev A <kevin@...>
      > Subject: [Small4-strokeEngines] Re: Ace Aviation Redrive
      > To: Small4-strokeEngines@yahoogroups.com
      > Date: Monday, May 6, 2013, 11:08 PM
      >
      >
      >
      >  
      >
      >
      >
      > No, powering an Ace Magic Cyclone weighshift, which requires a 447 two stroke normally; my Vanguard also works well so reckon hp is around 33-35. Weedhopper and Trike are similar size and dragginess.
      >
      > Kev
      >
      > https://www.youtube.com/watch?v=xjRHHK3xb9E
      >
      > --- In Small4-strokeEngines@yahoogroups.com, william esker <wldbl55@> wrote:
      > >
      > > So has this redrive been used on a Weedhopper? And with what engine?  Bill
      > >
      > > --- On Mon, 5/6/13, Kev A <kevin@> wrote:
      > >
      > >
      > > From: Kev A <kevin@>
      > > Subject: [Small4-strokeEngines] Re: Ace Aviation Redrive
      > > To: Small4-strokeEngines@yahoogroups.com
      > > Date: Monday, May 6, 2013, 3:29 PM
      > >
      > >
      > >
      > >  
      > >
      > >
      > >
      > > Hello Neale
      > >
      > > I designed the Ace reduction drive; John over in India was working through the engineering but lacked CAD. I wanted a B&S engine using American tuning parts, but needed a decent redrive, so put the problem onto our tech resources. Seventeen revisions later (the latest is revision 'Q' and it is on my trike and functioning well.
      > >
      > > Latest model has crank pulley closer to the case for less bending, and will handle up to 50hp. Adjustment is a doddle; slacken two 8mm bolts and turn the eccentric shaft to tighten the belt. Mine's only needed one adjustment after bedding the belt in.
      > >
      > > Sorry to be blunt but John sent list prices and photos of other reduction drives and they are all cruder and seem heavier. Mine weighs 3.88 kilos or 8.55 pounds, with the taperlock centre in steel adding 255 grams or just over half a pound on top.
      > >
      > > John is a very honest and straightforward man; he's from Wales and his Anglo-Indian wife Noelene works in the business, they are a family firm and I've bought another trike and wing from him, which has just arrived in Tilbury Docks, UK. He's also helped develop various changes to the aircraft, sending parts for free for me to try out.
      > >
      > > The LAA reviewed the engine and noted the 'impressive reduction drive'.
      > >
      > > Main thing is the machining labour is skilled and cheap, so he can afford to drill and lighten far more than usual.
      > >
      > > I 'lifed' the drive to 10 to eighth power cycles, or 6,667 hours at 2,500 rpm, as flex on the backplate.
      > >
      > > An interesting request from John was to make the drive reversible, so it can be bolted on with prop below crankcase, or prop above, to suit different aircraft. A Weedhopper suits 'prop low' but my pusher trike with fan cooling suits prop high.
      > >
      > > I trust him completely having dealt with him for two years
      > >
      > > https://www.youtube.com/watch?feature=endscreen&v=BaouUTD0478&NR=1
      > >
      > > Cheers
      > >
      > > Kev
      > >
      > > PS send a mail and will return some photos
      > >
      > > --- In Small4-strokeEngines@yahoogroups.com, Neale Dunstan <neale_dunstan@> wrote:
      > > >
      > > > All,
      > > >
      > > > I have dealt with John Penry Evans at Ace Aviation several times in the purchase of the Magic trikes. I have no issues in the quality of his products or in the delivery of his products.
      > > >
      > > >
      > > > regards,
      > > >
      > > > Neale Dunstan
      > > > Singapore
      > > >
      > > > +65 85746876
      > > >
      > >
      >

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