flyrotary@lancaironline.net Mailing List Archive

Hi Ed,

Thanks for getting back on the brazing rods. I too enjoyed our conversation, reams of useful info for me. I thought your brazed joints looked great, so I wanted to confirm what you used. Since the intake system I purchased last August has not materialized and the Vendor returned my money, it looks like I have to add building an intake to my list of exhaust/turbo and cooling design and building.

I am wondering if you know, if the Renesis with a 4 Port intake (Auto/Low HP version) has the same pattern as other 4 port engines. I liked the way your intake looked and I know you have done a lot of experimenting in this area. I would rather follow in a master's shoes than perform numerous experiments.

Not sure what you are paying for 100LL to the North, the new FBO in KLKR is $3.45 and very friendly. If you are ever in the area again, please give me a call.

Thanks,

Joe

----- Original Message -----

From: Ed Anderson

To: Rotary motors in aircraft

Sent: Monday, May 16, 2005 9:28 PM

Subject: [FlyRotary] Re: Brazing Rods

Hi Joe,

Yes, I recall, enjoyed our chat. You are correct it is the HTS-2000 website http://newtechnologyproducts.net/order.htm

I purchased directly from the vendor using their $65 special for 1 lb of the stuff. I doubt that they would sell lesser amounts - but I have not asked.

In any case, that is the stuff and I have found it great to use. I tried at least 3 other aluminum brazing rods and got little more than puddles of the stuff sizzling around on the metal I was trying to braze but no joining. No-doubt my lack of technique - but this stuff is much less critical. I have brazed .048 thick wall 6061T6 to a heavy aluminum manifold casting with no problem. They tell you to brush with a stainless steel brush while brazing but I just brush it clean of scale with the brush initially and braze away(set too many wooden handle stainless steel brushes on fire while trying to brush while brazing - must be like chewing bubble gum and walking at the same time {:>))

I initially started out using the MAP gas because of hits higher heat content, but then found that regular (cheaper) propane would do just fine provided you had a high BTU torch (for heavy stuff like castings). You do have to set it for a high BTU flow if you are brazing anything heavy, but smaller torches work well for lighter stuff.

Here's a photo showing the bottom tubes brazed to the aluminum manifold casting and the upper tubes brazed to the 3/8" thick 6061 plate. Not too messy.

Ed A

----- Original Message -----

From: Joe

To: Rotary motors in aircraft

Sent: Monday, May 16, 2005 8:40 PM

Subject: [FlyRotary] Brazing Rods

Ed Anderson,

When we spoke a couple of weeks ago at KLKR, you mentioned a great brazing rod for aluminum. Was it New Technology's HTS-2000. If so may I ask where you bought, direct from the vendor or were you able to find a smaller quantity than 1 lb.. If this is not the vendor or product may I ask again what it was.

Thanks,

Joe

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