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Author Topic: Dixon Tuned fox 35 to DS 40  (Read 1564 times)

Offline bruce malm

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Dixon Tuned fox 35 to DS 40
« on: December 19, 2006, 05:42:56 PM »
Just wondering if anybody has compared the power of the Tom Dixon tuned Fox 35 with stuffer backplate and Fox hemi head to the standard Double Star 40
I know Tom reports his reworked Fox pulls like a 40. I have a plane set up for the DS but not sure if I should spend the $$$ on a DS. I also have one of Larry Foster's reworks with the other hemi head and stuffer backplate.

Any information would be appreciated.

Merry Christmas and Happy New Year to all.

Bruce
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Offline Steve Helmick

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Re: Dixon Tuned fox 35 to DS 40
« Reply #1 on: December 19, 2006, 08:16:10 PM »
I love my DS .60bb.  j1 I've also run and flown one of the two DS .40's I have.  HB~> It's smooth, it starts well, but I can't think of anything it would fly well, other than maybe a Veco Warrior or Bi-Slob, and they would have to be kept light.  There's no reason a $150 engine should need any rework, and it definitely does. I'd suggest you use your Foster or Dixon Fox.  Steve
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"The United States has become a place where professional athletes and entertainers are mistaken for people of importance." - Robert Heinlein

In 1944 18-20 year old's stormed beaches, and parachuted behind enemy lines to almost certain death.  In 2015 18-20 year old's need safe zones so people don't hurt their feelings.

Offline Bill Little

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Re: Dixon Tuned fox 35 to DS 40
« Reply #2 on: December 20, 2006, 08:43:24 AM »
I can't compare the Tom's Fox 35 to the stock DS 40.  But, I can caompare a L&J Fox 35 with all the mods to a Stock DS 40.  I believe the L&J is a *little* stronger.

All bets are off if you install a larger restrictor (venturi) of around .300 and a couple extra head shims with 10% nitro in the DS 40.  Then it is a pretty good pulling 40.  Stock, th eDS 40s I have had less choke area than a stock Fox 35!
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Offline Steve Fitton

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Re: Dixon Tuned fox 35 to DS 40
« Reply #3 on: December 20, 2006, 09:57:06 AM »
Bruce,

What sort of plane is it, and how heavy is it?
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Steve

Offline bruce malm

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Re: Dixon Tuned fox 35 to DS 40
« Reply #4 on: December 20, 2006, 01:52:30 PM »
I bought the prototype of Windy's Cardinal Revolution that Elliot Scott had on E-bay. Beautifully built and very light. I 'm not sure when I will start finishing. It was built around the DS 40 and I understand the Fox and the DS are interchangeable as far as size. I have not really had time to actually check. I will probably add a couple more coats of clear and finish with automotive paint. Probably  white for the base color.  I could put another 40 or larger engine in it, but I hate to mess up the beautiful workmanship already put into the airplane, but it might come to that.

Bruce
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Offline Steve Fitton

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Re: Dixon Tuned fox 35 to DS 40
« Reply #5 on: December 20, 2006, 03:36:13 PM »
Cardinal Evolution or Revolution?  I'm not familiar with a revolution version.  I'm guessing a revolution Cardinal would be smaller than the 40 size Evolution and built around a Fox 35......?

Perchance do you have data on square inches, etc?

Fox and DS should interchange, although check for subtle differences in length from mounting holes to prop washer.
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Steve

Offline bruce malm

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Re: Dixon Tuned fox 35 to DS 40
« Reply #6 on: December 20, 2006, 05:49:44 PM »
You are correct it is the Evolution. Just had a brain f**t.

And at this time, I haven't calculated the wing area, etc.
Bruce
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Offline Steve Fitton

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Re: Dixon Tuned fox 35 to DS 40
« Reply #7 on: December 20, 2006, 08:05:03 PM »
If my memory is accurate, the Evolution is roughly the wing of the Profile cardinal.  That *should* work if the airplane is light, but its outside the scope of my experience with the DS 40.  I have my 40 DS in a Nobler.  I'm not sure a DS 40 gives me a warm fuzzy feeling in something like the evolution, but I have no data to back up my feelings.  Hopefully, somebody else has more revelant experience with shps that size.
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Steve

Offline Steve Helmick

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Re: Dixon Tuned fox 35 to DS 40
« Reply #8 on: December 20, 2006, 09:00:54 PM »
Windy put the DS .40 in his Profile Cardinal prototype after the K&B .40S. The report that the line tension was not much. For comparison, I tried one of the K&B .40s (#4055) ABC with as much as a .312" venturi, and it just didn't put out enough power. I'd suggest a B.40, TT or Magnum .36 or .46LA. Easier to do now, than later. The Foxes won't make it, either, in that plane, but especially with your local heat.  n1 Steve
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"The United States has become a place where professional athletes and entertainers are mistaken for people of importance." - Robert Heinlein

In 1944 18-20 year old's stormed beaches, and parachuted behind enemy lines to almost certain death.  In 2015 18-20 year old's need safe zones so people don't hurt their feelings.

Offline bruce malm

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Re: Dixon Tuned fox 35 to DS 40
« Reply #9 on: December 22, 2006, 01:51:22 PM »
I pulled it down and the wing area is 585 and it is very light. The L&j Fox I have on a Nobler really pulls well. The fox would need an 1/8" spacer behind the spinner to clear the nose. The B-40 would need a little mount modification and a custom spinner backplate to close the gap.

I have a profile Cardinal  and they look pretty close. I'll have to do some testing when I can. I hope the grass on my field grows in so I can fly in the evening and not have to plan to drive all over town. I have quite a few other engines I can see if they fit. I also have 2 new 46VF's and a bunch more used ones on R/C planes and a couple 40VF's. So when I really get ready to finish it, I'll make the decision.

I've been busy building Quarter scale Gee Bees that a friend sells to restaurants etc. I just finished the 10 th one, 7 in the last 2 month's but still have a J3.  Just need to get back to my own airplanes that are 1/2 finished.

Thank you to everybody for all your input and Hope everybody has a Fabulous, Merry and safe Christmas.

Bruce / Wackydaddy
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