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Old 02-11-2019, 09:10 AM
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DA70 and tuned pipe

I'm not coming up with much info on this, but I'm looking for anyone that has ran a DA70 with "Y" header into a single tuned pipe ? We are wanting to use it on a Laser 91" instead of the canister. Any info is appreciated.
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Old 02-11-2019, 09:19 AM
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Plane bender smooth small pipe or mtw re3 are being used up here in the great white north


8.5” header on the re3 and the pb smooth for a da70 yeilds max rpm
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Old 02-11-2019, 09:24 AM
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Quote:
Originally Posted by Raven1978 View Post
Plane bender smooth small pipe or mtw re3 are being used up here in the great white north


8.5” header on the re3 and the pb smooth for a da70 yeilds max rpm
So you cut the Y header down to 8.5" total ?

Tossing around the idea of running a ES Composite pipe to lower the weight.
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Old 02-11-2019, 10:28 AM
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Jason
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I used an ES composites 55g on a DA60 for a couple seasons. Performance was great, but header length is critical. Header must be exactly 14 inches from the cylinder head to the inlet of the carbon pipe. Any other length results in terrible performance. I dont think ES offers a pipe that can flow enough for the 70, unless they offer something new I haven't seen yet.

I spotted a tuned pipe (not just a canister) made by KS the other day that I would love to try but I have zero info. Cheif aircraft lists it on their site.
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Old 02-11-2019, 11:26 AM
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Well, did a little research. The ES pipe for a 35cc only weighs 3.8 ounces. A single MTW RE3 weights 11.3 ounces. So if i went with (2) ES pipes, i would still be lighter then a single MTW.
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Old 02-11-2019, 01:14 PM
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https://www.rccanada.ca/
The Canadians seem to be big on pipes. You might be able to find something on rccanada.

While this is a dual tune pipe setup from Brad, he might have some single pipe info.

Da70 and Plane Bender Smooth pipes (2 min 51 sec)
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Old 02-11-2019, 02:08 PM
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Iím running a set of the ES-35G composite tuned pipes on a DA 70 in an EF 91Ē Extra300 and WOW does the combination make some power. Iím at stock length on the headers. Transition is relatively smooth. Acceleration is incredible.
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Old 02-11-2019, 02:14 PM
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Any particular reason for pipe over can? We had a guy build a 94” mxs with a DA70, 2 into 1 header on an RE3. The thing was a rocket, tons of power.
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Old 02-11-2019, 02:21 PM
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I had two ES-35G tuned pipes and two Proflow small canisters but one was a front dump and the other was a rear dump. Didnít want to buy another canister when I had something that would work on hand. Very happy with the quietness of this setup too.
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Old 02-11-2019, 03:08 PM
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Jason
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Ive always wanted to try the two ES 35G pipes on the 70. Glad to hear its this good. I just took the DA 70 out of my 88 edge, and put it in my 89 slick, which used to have the DA60/ES combo. I enjoyed the quietness of the ES pipe too. 89 slick is on jtec mufflers for now and its got that bark to it.

Id really like to hear about that single KS pipe thats advertised as " 60-70cc" on ChiefA site
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Old 02-12-2019, 09:20 AM
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You might call DA and ask them before buying ES pipes for the 70. Last year I sent them my 70, headers and 2 ES composite pipes for testing. They tried all different lengths and couldn’t get any more power out of it than any other setup.

I have flown the 2 into 1 header and full length smooth pipe option with the boys in Canada and it was absolutely incredible. (I think it was better than the twin ES composite setup)

-Craig
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Old 02-12-2019, 09:49 AM
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Quote:
Originally Posted by carrid02 View Post
You might call DA and ask them before buying ES pipes for the 70. Last year I sent them my 70, headers and 2 ES composite pipes for testing. They tried all different lengths and couldn’t get any more power out of it than any other setup.

I have flown the 2 into 1 header and full length smooth pipe option with the boys in Canada and it was absolutely incredible. (I think it was better than the twin ES composite setup)

-Craig
Funny you say that. I talked with Dave late yesterday at DA and he said they got the best results running 2 into 1 header with the RE2 pipe.
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Old 02-12-2019, 11:44 AM
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Quote:
Originally Posted by carrid02 View Post
You might call DA and ask them before buying ES pipes for the 70. Last year I sent them my 70, headers and 2 ES composite pipes for testing. They tried all different lengths and couldnít get any more power out of it than any other setup.

I have flown the 2 into 1 header and full length smooth pipe option with the boys in Canada and it was absolutely incredible. (I think it was better than the twin ES composite setup)

-Craig
Well thanks for that- I just emailed ES about the 35g pipes yesterday too.

I also asked ES if there are any plans to make a single carbon pipe for the 70: The answer was no.

This is new info on the RE2 for me. Last I knew, the RE2 could not flow enough for the DA70. Apparently they tested and found out otherwise.
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Old 02-12-2019, 11:51 AM
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Now Im wondering if the ES 55G could flow enough for the 70. I used the RE2 on the DA60 before switching to the ES 55g a while back. Only switched because of the carbon cool factor and curiosity. They both seemed to perform equally once correct header length was achieved for each pipe. Both pipes on the DA60 turned the same Falcon 24x9 prop at the same RPM as my DA70 on jtec mufflers.

So this would stand to reason that the 55G could do it.

Maybe?
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Old 02-12-2019, 02:00 PM
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Go by what DA suggests for their recommended canister size to compare tuned pipe.I would say ES pipe would be to small.
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