Author Topic: Fox 36 Mk 4-5 ABC sets (Read 48989 times)

Brian Gardner · « **Reply #50 on:** September 19, 2022, 04:40:48 PM »

List updated Phil.

These and the ST35 will be getting priority after the current run of 160 x OS61VF are done.

Brian

Quote from: phil c on September 09, 2022, 06:58:56 PM

I've been asked again if I would do a run of Fox 36 Mk 4-5.

Again, I'm happy to do these if there are enough numbers. WE HAVE ENOUGH NUMBERS

They will be stock Mk V timing and include piston/liner/rod/pin/head shims/backplate gasket.

Also doing Tyndal double bubble head buttons to suit stock long reach plugs, and also Nelson head buttons. So let me know if you want either or both.

Piston/liner/rod/pin/shim sets will be approximately $115 to $125 Australian dollars. Don't know what the head buttons will be $.

Brian

i=
I'd like 2(two) piston liner assemblies and 2 of each head: Tyndal long reach, Nelson plug version

Thanks Brian
Phil C

Brian Gardner · « **Reply #51 on:** April 16, 2023, 10:49:03 PM »

Getting closer fellas.

Not forgotten.

Brian

GERALD WIMMER · « **Reply #52 on:** April 28, 2023, 05:16:49 AM »

Hello

Nice to know you are still making Fox 36 parts but wonder will mk4 and 5 sets fit a mk6?
If the Mk 6 is different is it a possible for the future?
Thanks
Regards Gerald

Brian Gardner · « **Reply #53 on:** May 01, 2023, 03:20:14 AM »

From memory the MK6 is different. I think it was AAC too.

Yes it's possible for the future (but only as ABC) if there is enough orders for it.

Brian

Quote from: GERALD WIMMER on April 28, 2023, 05:16:49 AM

Hello

Nice to know you are still making Fox 36 parts but wonder will mk4 and 5 sets fit a mk6?
If the Mk 6 is different is it a possible for the future?
Thanks
Regards Gerald

GERALD WIMMER · « **Reply #54 on:** May 01, 2023, 05:47:49 AM »

Hello Brian

Thanks for your reply , it would be great if we could get some Mk6 P/C sets made , how many orders would you need?

Think the Mk6 was steel on the very early ones but most were ABC , while the Mk7 was only AAC but had problems so people retrofitted the ABC sets from the Mk6.

Regards Gerald Wimmer

Reptoid · « **Reply #55 on:** May 03, 2023, 03:40:02 PM »

Quote from: Brian Gardner on May 01, 2023, 03:20:14 AM

From memory the MK6 is different. I think it was AAC too.

Yes it's possible for the future (but only as ABC) if there is enough orders for it.

Brian

MkIII, MKIV, MKV, and MKVI can all use the same piston, liner, rod, and wrist pin. MKVII is a whole different animal and nothing interchanges

Brian Gardner · « **Reply #56 on:** June 27, 2023, 07:51:46 PM »

These are ready guys.

I'll start contacting everyone on the list and begin shipping out. Bear with me - I'm insanely busy trying to keep up with this and my wheelchair basketball commitments both on court 4 times a week and also on numerous committees managing teams and organising tournaments, funding grants, charity fundraisers etc.

Brian

Al Ferraro · « **Reply #57 on:** August 14, 2023, 06:25:55 PM »

I got my order and Brian's work is excellent as in the past. The thing that I'm not too thrilled about is the Tyndall double bubble head inserts. These inserts have a very large combustion chamber. In my opinion, you will have to really tip the nitro can to get power almost like a Nelson 36. This will also cut down on the overall run time per oz of fuel used. I think a better head design would have been to copy the Nelson 36 double bubble head that has a much smaller combustion chamber, and would produce a high-power output with only 10% nitro and is a proven design. I would be in if Brian would made them.
Al

Lane Puckett · « **Reply #58 on:** August 14, 2023, 08:04:13 PM »

Al, That is what Dick Tyndall noted in the first page of this thread. He ran 30% nitro with those heads which is what they were designed around.

Lane

Reptoid · « **Reply #59 on:** August 14, 2023, 09:29:26 PM »

Quote from: Al Ferraro on August 14, 2023, 06:25:55 PM

I got my order and Brian's work is excellent as in the past. The thing that I'm not too thrilled about is the Tyndall double bubble head inserts. These inserts have a very large combustion chamber. In my opinion, you will have to really tip the nitro can to get power almost like a Nelson 36. This will also cut down on the overall run time per oz of fuel used. I think a better head design would have been to copy the Nelson 36 double bubble head that has a much smaller combustion chamber, and would produce a high-power output with only 10% nitro and is a proven design. I would be in if Brian would made them.
Al

Did you set it up and run it? The Fox uses way less fuel per minute than the Nelson already and I thought you guys were all about the Nitro. If you're dead set on trying a smaller chamber, you can buy a "Blank" from Henry (for $10-12) that has the plug seat, pilot hole, and threads machined and chuck it up in the lathe and make any chamber you want. Keep in mind the Fox case, Rod (including your new one), and crank are not nearly as rigid as the Nelson

Brian Gardner · « **Reply #60 on:** August 19, 2023, 03:05:45 AM »

If people want a copy of the nelson chamber I can do that if the orders are there.

Quote from: Al Ferraro on August 14, 2023, 06:25:55 PM

I got my order and Brian's work is excellent as in the past. The thing that I'm not too thrilled about is the Tyndall double bubble head inserts. These inserts have a very large combustion chamber. In my opinion, you will have to really tip the nitro can to get power almost like a Nelson 36. This will also cut down on the overall run time per oz of fuel used. I think a better head design would have been to copy the Nelson 36 double bubble head that has a much smaller combustion chamber, and would produce a high-power output with only 10% nitro and is a proven design. I would be in if Brian would made them.
Al

kenneth cook · « **Reply #61 on:** August 19, 2023, 04:27:35 AM »

I haven't tried the Nelson head yet. I'm using the stock head button currently and I'm very impressed with my engine. Looking forward to using it soon.

Dick Tyndall · « **Reply #62 on:** August 19, 2023, 01:07:50 PM »

When I first started making the double bubble inserts for the Fox MKIII and MKIV engines in the late 1970's I was shooting for more performance without throwing gobs of nitro in the engine and having it self destruct in a short period of time. Just being 4 or 5 MPH faster than the other guys was good enough for me and keeping the engines in one piece was a good thing. At the 1983 NATS, Rich Lopez stated in his Combat article in Flying Models magazine that " Tyndall and ( Steve ) Kott seemed to have the fastest airplanes" ( I also built Steve's engines ) . I personally had to agree with him. Steve finished 3rd and I finished 5th out of 42 contestants. Note that this was before Henry made any .36 engines if I'm not mistaken. Henry's engines , when they came out, made everything else obsolete ( in my opinion ). When this happened I was not flying airplanes anymore I was racing R/C boats ( I still am ). Duke Fox never made a .36 combat engine that was anywhere close to Henry's engine ( Sorry Duke; just my opinion ).
Long story short: I started making the double bubble inserts and stopped making them long before the Nelson .36 came out.

Dick Tyndall
Virginia Craftsman

Al Ferraro · « **Reply #63 on:** August 20, 2023, 07:06:09 PM »

Quote from: Brian Gardner on August 19, 2023, 03:05:45 AM

If people want a copy of the nelson chamber I can do that if the orders are there.

Thanks Brian, I would take 6 Nelson chamber head buttons.
I have a few Fox MK7 that I run on different type models. One of them is on a Fast combat model, 540sq.in.Wakkerman. Using Power Master GMA 10 nitro my Fox MK 7 pulls it 119 MPH with out a streamer, and yes it uses a lot of fuel. I’m using a Nelson plug and style head chamber that I made, and with some other mods that gave me the extra power. The bottom of the plug is only .135 from the bottom of the squish band. This is no BS as many people has witnessed my Mk7 in action.

Dick Tyndall · « **Reply #64 on:** August 20, 2023, 09:45:23 PM »

I'm impressed. Your Fox MKVII is 3MPH SLOWER than my MKIII engines that I ran 40 years ago. If I had wanted to run 10% nitro fuel, I would have run the head clearance down to around .008, put on a prop with a little less pitch and a hotter glow plug. It would probably still run close to 120MPH, but might be a little tougher to pull a streamer.
If you want to go fast, buy a Nelson. One just sold on Ebay for $1,901.

Dick Tyndall

Al Ferraro · « **Reply #65 on:** August 21, 2023, 10:35:33 AM »

Quote from: Dick Tyndall on August 20, 2023, 09:45:23 PM

I'm impressed. Your Fox MKVII is 3MPH SLOWER than my MKIII engines that I ran 40 years ago.

Dick Tyndall

How about 6 MPH FASTER WITH A FOX 36x BB in a 19 oz model with official time keepers!
Al

Motorman · « **Reply #66 on:** August 21, 2023, 10:57:27 AM »

Al, at what speed are you guys going to .018"

MM

Dick Tyndall · « **Reply #67 on:** August 21, 2023, 11:26:14 AM »

Quote from: Al Ferraro on August 21, 2023, 10:35:33 AM

How about 6 MPH FASTER WITH A FOX 36x BB in a 19 oz model with official time keepers!
Al
[/q Small airplane, thin airfoil, a BAD ASS Scarinzi engine, 50% nitro, .015 lines, been there, done that. Not something that I would fly for a season of combat competition.
You win, okay?

Dick Tyndall

Al Ferraro · « **Reply #68 on:** August 21, 2023, 05:50:35 PM »

If you want to go fast, buy a Nelson. One just sold on Ebay for $1,901.

Dick Tyndall
[/quote]
FYI, I own 6 Nelson 36 and the new Fora 36 and my Fox MK7 is just as strong as them. I even did a combat match Fox MK7 vs Nelson, same plane, prop, and fuel. Both planes were exactly the same speed.
Al
Heads attached, The Nelson is a complete head

Dick Tyndall · « **Reply #69 on:** August 21, 2023, 07:06:14 PM »

Good for you. Now go bad mouth someone else's 45 year old product that doesn't compare to the latest and greatest thing out there.

Dick Tyndall

Brian Gardner · « **Reply #70 on:** August 22, 2023, 10:23:41 PM »

I don't think Al's comments were intended to bad mouth your head buttons Dick. More of a comparison.

A few have already requested copies of the Nelson chamber which I'm happy to do if the numbers increase a bit more and someone wants to loan me a head to copy the chamber from.

Brian

Al Ferraro · « **Reply #71 on:** August 23, 2023, 08:19:52 AM »

I don't think Al's comments were intended to bad mouth your head buttons Dick. More of a comparison.
Brian
[/quote]

Thank you, I will send you the Nelson head if you need it.
Thanks Al

Reptoid · « **Reply #72 on:** August 23, 2023, 04:05:59 PM »

Quote from: Motorman on August 21, 2023, 10:57:27 AM

Al, at what speed are you guys going to .018"

MM

AMA rules for fast combat have required .018" x 60' for decades. Anything else is irrelevant

Brian Gardner · « **Reply #73 on:** August 23, 2023, 06:47:48 PM »

I'll let you know if I need it. At this point there are 12 requested. If we get to 20 I'll proceed with it.

Brian

Thank you, I will send you the Nelson head if you need it.
Thanks Al
[/quote]

Motorman · « **Reply #74 on:** August 24, 2023, 04:11:52 PM »

Quote from: Reptoid on August 23, 2023, 04:05:59 PM

AMA rules for fast combat have required .018" x 60' for decades. Anything else is irrelevant

That's good but they fly Vintage combat on .016" last I knew. I suggested they go to .018" for increased safety but apparently I'm stupid.

MM

Reptoid · « **Reply #75 on:** August 25, 2023, 12:19:31 AM »

Quote from: Motorman on August 24, 2023, 04:11:52 PM

That's good but they fly Vintage combat on .016" last I knew. I suggested they go to .018" for increased safety but apparently I'm stupid.

MM

\
All of the Vintage or Nostalgia Combat events I have been to in TX and AZ were flown on .018". Even "speed Limit" (#329 slow) combat is flown on .018" x 60'
If they're flying on .015" lines it just makes it less safe and makes their "speed" claims less legit

Tom Luciano · « **Reply #76 on:** August 27, 2023, 06:37:24 PM »

Well, Why, bring Vintage Combat into your discussion.

Our Vintage Combat days are not matches and we don't fly matches on .015 lines. Our speed runs were to replicate the days when Combat was flown on .015 lines that's why we do it. Everyone who comes can fly on .018's no one will stop you. I even calculated our model weights to speed as the speed flyers use. We are within the parameters of 80% of breaking strength for 1 line as required for speed. Basically, our cutoff engines are the G21-35 and the 36X BB, Not the Baldie, no mark 3-7's, no nelsons.
This is really getting old. WE are just having fun flying the old stuff as back in the day. We have yet to have a line break or a fly away and 2023 will be our 10th year. We are not making false claims, put your money where your mouth is.

bdt-m · « **Reply #77 on:** August 29, 2023, 10:27:40 AM »

No disrespect: I do find it comical the argument on the double bubble; who, when & why... specially since double bubbles existed, not innovative and used in speed, carrier & stunt long before the late 70's.

It's all good... :-)

Dick Tyndall · « **Reply #78 on:** August 29, 2023, 08:14:12 PM »

And correct you are. Double bubble head inserts were around years before I started making them for the Fox MKIII's and IV's. I made some for the early Rossi .15's ( 10.5 MM rear bearing engines ) for my Scale Racers before I started working on one that would work on the Fox's. I'm not trying to take any credit for "inventing the wheel" on this because I did not. I knew that it worked on other engines and after much trial and error ( and making A LOT of different kinds of inserts! ) I hit on one for the MKIII's and MKIV's that worked for me ( and for a lot of other people, also ). Just wanted to make something better than what Duke was selling with these engines. And it was.

Dick Tyndall

Brian Gardner · « **Reply #79 on:** January 27, 2024, 04:20:57 PM »

How are people finding the performance of the head buttons? (not trying to re-start the fire).

Do people still want buttons done with the Nelson chamber? I'm going to do another run of ST35 peri port this year and can add the Fox 36 CS buttons in with that run.

Brian

Motorman · « **Reply #80 on:** January 29, 2024, 02:47:40 PM »

Hate to burst anyones bubble but the double bubble is an inferior design. If you happen to need a very large combustion chamber for some reason, there is a proper way to do a double bubble but, the ones pistured here are not even good for that. Better than Fox heads yes, I agree.

Reptoid · « **Reply #81 on:** January 29, 2024, 10:00:04 PM »

Quote from: Motorman on January 29, 2024, 02:47:40 PM

Hate to burst anyones bubble but the double bubble is an inferior design. If you happen to need a very large combustion chamber for some reason, there is a proper way to do a double bubble but, the ones pistured here are not even good for that. Better than Fox heads yes, I agree.

Please feel free to call Henry Nelson up and tell him his head design is inferior. I am sure that he, as well as the rest of us who actually know something about engines will be amazed by your prowess in engine design.

Al Ferraro · « **Reply #82 on:** February 02, 2024, 06:09:05 PM »

Thank you, I will send you the Nelson head if you need it.
Thanks Al
[/quote]
Nelson head is on its way.
Thanks Al

Brian Gardner · « **Reply #83 on:** February 08, 2024, 10:13:00 PM »

Thanks Al,

You did send it to my new address? 115 Daintree Drive...........

Brian

Quote from: Al Ferraro on February 02, 2024, 06:09:05 PM

Thank you, I will send you the Nelson head if you need it.
Thanks Al

Nelson head is on its way.
Thanks Al

Al Ferraro · « **Reply #84 on:** February 10, 2024, 09:53:42 PM »

You did send it to my new address? 115 Daintree Drive...........

Brian
[/quote]
Yes, Tracking says it it departed a transfer airport in Kingsford Smith, Sydney Australia on Feb. 8 at 8:13 am. The item is currently in transit to the destination.
Al

Brian Gardner · « **Reply #85 on:** February 11, 2024, 02:46:33 PM »

OK, excellent Al.

Quote from: Al Ferraro on February 10, 2024, 09:53:42 PM

You did send it to my new address? 115 Daintree Drive...........

Brian

Yes, Tracking says it it departed a transfer airport in Kingsford Smith, Sydney Australia on Feb. 8 at 8:13 am. The item is currently in transit to the destination.
Al

Brian Gardner · « **Reply #86 on:** February 12, 2024, 10:17:21 PM »

Sample Nelson head received. I'll try schedule this in as soon as I can.

Brian

Al Ferraro · « **Reply #87 on:** February 14, 2024, 08:35:45 AM »

Quote from: Brian Gardner on February 12, 2024, 10:17:21 PM

Sample Nelson head received. I'll try schedule this in as soon as I can.

Brian

Thanks Brian.
Al

Brian Gardner · « **Reply #88 on:** September 30, 2024, 05:15:17 PM »

I have the Nelson chambered head buttons ready for these.

I'll start contacting everyone on the waiting list.

I made more than required. So there's plenty of extras.

Al Ferraro · « **Reply #89 on:** October 01, 2024, 09:44:20 AM »

Quote from: Brian Gardner on September 30, 2024, 05:15:17 PM

I have the Nelson chambered head buttons ready for these.

I'll start contacting everyone on the waiting list.

I made more than required. So there's plenty of extras.

Payment sent. There will be some really strong Foxes to deal with!

Al

Brian Gardner · « **Reply #90 on:** October 08, 2024, 10:28:05 PM »

Nelson chambered buttons all sold out now.

I'd be interested in feedback