I am desperately looking for a header Pipe and Tuned Pipe for an OS61AX. Since Macs no longer makes tuned pipes, I have not found a source for these items. I still build Classic Pattern Airplanes even though the interest has shrunk to a point were the organization website shut fdown. We still have a few events in Southern California and hope we can keep it going.

Hi Sam,
I have purchased headers and pipes from these guys: https://www.westonuk.co.uk/Genesis-Pipes/
I had them make me some custom wrap around headers and they were very helpful and prompt both communicating and completing the work which is very nice and durable. I have one header on an OS 95AX with more than 500 flights on it.
I don't know where Rancho Santa is located in California, but I recently read on RC Groups that there are 5 classic pattern events scheduled in Southern California this year. There is very little activity here on the east coast, though there seem to be interested pilots.
Regards,
Will

I used to have custom made headers by a guy in Canada. I thought his name was Gary Mueller. I looked in my contacts, and I have him for Jet-Tech tanks. Maybe he did both. I would suggest getting in touch with Central Hobbies. They are the go to for F3A and pattern planes.

https://www.centralhobbies.com/

Karl Mueller. Great guy, great headers. Unfortunately, he passed away a few years ago :-(

Ah..... Darn, I didn’t know. Yes he was a great guy and made perfect headers. I had a couple unusual headers and they were always perfect.

Thanks for the update and response. I had no idea this would be that tough. I chased Hatori down in Japan, but they are catering to RC Cars and mainly helicopters. I am in the Novice Classic Pattern Class which is the stock muffler, but once you move out, I believe you can have a tuned pipe and retracts. Going electric solves the pipe issue, but sure love the sound of a 2-stroke up on the pipe.

Sam

I have a tuned pipe and maybe have a header. Need to look in my box at home. I’ll post some pictures of what I have in stock here in an hour or two. 12:30 pm est.

I’m assuming you looked on e—-b—-a—-y?

I had to dig deep to find them.



I don’t remember what this header went on. I think that it is too big for the OS.61 and OS.91. If you didn’t realize, the.61 and .91 are the same case, just different piston and sleeve.



The longest pipe is 17 inches. I had it on the.91.
I think that you need the 39mm header, but it will be difficult to connect.



The two on the left I think is what you might be interested in for the.61. The far left is a little smaller and I remember it was in a BVM DF .91 or .96 turning 22k rpms, but really don’t remember. The longest one, second from left, I remember using it on an OS .91. The two on the right I believe are small and used for.46.

I did get a tuned pipe, Kevin at Wings West had a new spare MACS for the OS65AX. I will need a header pipe. The dimensions center to center muffler mount is 1 5/8th". If you have one that will fit for a side exhaust, I am all for it.
Thanks,
Sam

Hi
Do you know if they will make a special S shape for the magic 60 for the Rossi 61,
or a special bent header, for example, to the Aurora or citation for the ys 61.
I've done a big research and didn't find nothing.
Unfortunately for the last few years I have been completely out of Hobby, and now I am slowly coming back.
I knew about 7 years ago, when I stopped, that there was Hatori or Mack, and now suddenly I find a problem with that.

thank you
avi

When Mac died, no one picked up his company or equipment. Hatori is off shore and mainly focuses on Helicopter pipes. I was fortunate to find a past US champ, Kevin Gribben who is a buddy and he had a stash of pipes. I have the pipe, but just need a side exhaust header for an OS65AX. Worst case I will have to make one. I heard if you freeze water in a tube it will bend easier, but haven't done that yet. If I fly Novice here, I have to run the stock OS Muffler. Once I move up in Classic Pattern I can go to retracts and tuned pipe. That activity is dwindling, but still a band of dedicated guys with neat old pattern planes.

Weston UK, can and will make whatever header you need. They just need the exhaust dimensions or the engine manufacturer and the dimensions of the header. The 'S' header for the Magic or Skymaster is actually pretty simple. The offset header for the Aurora or Citation should also be easy to make. Kevin Gribben, mentioned above, made some very nice adapters for OS and YS rear exhaust 61s which you could use Rossi headers on. You might try sending an email to Leo at Ballistic Aircraft, Co. He might have some adapters and he was selling Rossi products.
Definitely a shame about Mac's Products and Hatori, too, but I guess the just wasn't enough demand.

Hi Sam,
Glad to see your planning on coming out. We really have only one rule, no modern 2m planes in Advanced, Expert or Masters. The entry level classes are just that, entry level. So fly whatever you have. Tuned pipes, retracts are great!
Obviously we call it Classic Pattern for a reason, so most everyone is flying more classic designs, especially in the higher classes. But the emphasis is on fun and having new people give basic pattern a try.
I will be CDing two of the contests. The first of which is May 2nd out at RRCC in Perris. And the 3rd at our home club OCMA.
As far as your header needs are concerned depending on whether you need a standard, long or extra long you are looking for MACS #2860, #2861 or # 2862 These fit both the 61 FX & SF as well as the 65 & 75 AX
I can check my stash to see if I have what you need, but what's it going in and do you need standard, long or extra long?

Paul

Hi flywilly, it happens that I' ve been also looking for Macs/Hatpri pipes but they are very hard to find these days. I reached Weston last week and they promptly replied and they do sell the Genesis Aero series of pipes which seem reasonably priced.

However I haven't found any reviews or performance figures on the web. Have you tried them already? Any thoughts?

Also, in case you have the .60 - .80 Genesis pipe, can you share what is the pipe weight?

I would like to use these pipes with a couple of YS 61FR and FS Classic engines I have (I do have the NR adapters to the YS exhaust so at least I have the adapter problem solved).

Thanks!

Hi Southern Flyer,
I have not personally used a Genesis pipe, but I have read good things about them. I think over on the RC Groups Classic pattern forum. You can ask Weston if they have any tuning recommendations for the pipe with the short stroke YS engines which will depend on the prop size you want to use. Great engines in my opinion (best short strokes ever!).
Good luck,
Will

Will, thanks for your reply.

I did reach out Weston and they sent me a ballpark estimate of around 150 gr weight for the .60 to .80 genesis aero pipe, and a length of aprox 400 mm.

It seems to be a little on the high weight end compared with the Hatori # 606 (114 gr) and Macs 10 cc Quiet Pipe (128 gr.) but I think it's worth a try and also given there are not really much options today other than the NR 50400 pipe for 10 cc glow engines.

Does anyone know/recommend of any carbon pipes being offered on the market, Salisbury pipes still offering carbon 10 cc aero pipes?

Regards

JP

ES Composites. Great pipes. Google the website then send an email to Ed Skorpea (the owner) with what you want. He doesn't carry any inventory, just makes the pipes 'on demand'. They are very light, too!

Ed website is down but you can email him at [email protected]

Hi there,

I think https://zimmermannschalldaempfer.de/en/ in Germany can make any header you need.

Regards Achim

Last time I was at MECOA's web site they had purchased the remaining inventory of MACS and were selling it as when it is gone it is gone. You might look there and see if they still have what you need.

The Macs 60 sized pipes have long been sold out at Mecoa. YS also makes a very nice pipe for their ‘classic’ .61 engines. CKAero is the US importer or RC-Japan is another good source.

I build my own headers and pipes. Here is a mini how to on pipes. https://www.flyinggiants.com/forums/...=13974&page=11
Headers are pretty straight forward if you have a pipe bender.

I am building a MK Blue Angel 60 and I have a Super Tigre G60 ABC with ring the I am using and I am looking to a header for it Anybody have anything? of hints on where to get one Thanks Greg

When I couldn't find a header for my OS 61RF I contacted these guys across the pond. They were helpful and the cost is not exorbitant. Shipping time is not terrible either. Send them an email. However be prepared to give them more information in regards to the offset and measurement you want your header. They make them custom to your dimension. Oh BTW they call them exhaust manifold instead of header.
Smile
https://www.westonuk.co.uk/Home/

I have purchased several headers and pipes from WestonUK and highly recommend them!