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Old 11-11-2019, 04:29 PM
Michael Henning Michael Henning is offline
Join Date: Jun 2011
Location: Nashua, NH
Posts: 536
Default Steinair vs Approach fast stack

What is the difference, if any, between Steinair and Approach Fast Stack wiring harnesses?
RV-4 #2750
WW150C Prop
1018 lbs

Last edited by Michael Henning : 11-11-2019 at 04:35 PM.
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Old 11-11-2019, 04:57 PM
nilberg nilberg is offline
Join Date: Dec 2012
Location: Katy, TX
Posts: 231

Two different approaches. Steinair do the “classic” wiring from connector to connector between the units. While FastStack using a central hub, i.e. wiring from each unit connectors to a hub. I do not think Power connections or CAN wiring is included in the FastStack ready made harnesses l, those have to be wired up separately.
Bjorn N - RV 7 in progress
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Old 11-11-2019, 05:24 PM
jliltd jliltd is offline
Join Date: Sep 2013
Location: Rancho San Lorenzo
Posts: 819

The Advanced Fast Stack Hub is an innovative idea and I have a done a few. However, with all the variables and different configurations between manufacturers of avionics it is pert near impossible to configure the hub for every combination. The Hub has a configuration harness that helps sort out standard interconnects but there are always a few items that bypass the Hub out of practicality. The Fast Stack pre-made harnesses have connectors that are impossible to modify in the field without destroying them (like if you want to add a pin somewhere). So that and the Hub bypassing can cause the Hub concept to come up short. Not knocking the innovative concept here. Just understand there are certain limitations. If you go Hub, you need to stay Hub. Personally I find the Hub too limiting for my purposes unless it is a simple one-off install where nothing will change.

However, the same company that makes the Approach Hub (Park Rapids) will also do conventional harnessing. They do a great job of it. Similar to Stein.

So in the end I prefer traditional wiring. And while I prefer Stein, I wouldn't shy away from Park Rapids if there were schedule or cost issues.

Last edited by jliltd : 11-11-2019 at 05:29 PM.
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Old 11-11-2019, 06:30 PM
ssonixx ssonixx is offline
Join Date: Mar 2013
Location: Dallas, TX
Posts: 47
Default It may depend on the avionics.

It depends on the avionics you are putting in I think. I had a wiring harness made by Approach. It was for a full G3x Touch system with a 750. For this, they did point to point. No stack in the middle. This was for a Glasair so they needed me to identify measurement/locations for the remote boxes and such on the harness trunk they provided. Price was good. Support is good (Tim seems to pick up his phone anytime I call). No complaints. Would do it again.
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Old 11-11-2019, 11:26 PM
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Av8rRob Av8rRob is offline
Join Date: May 2005
Location: Rescue, CA. KROB
Posts: 345

I would also recommend calling Aerotronics. Ive been very impressed with their products and customer support. Custom made whatever you want.
Rob Lasater
Rv-14 flying baby, yeah.
Paid Dec 2019
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Old 11-12-2019, 05:17 AM
Electrogunner Electrogunner is offline
Join Date: Aug 2016
Location: Quarryville ,pa
Posts: 519
Default Harness

Approach does custom work as well. I had them do a G900X harness customized to my installation in my -10. Everything worked the first time I threw the master. That is saying something as the 900 harness is huge. They were very quick to answer any of my questions when I was configuring the LRU's too.
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Old 11-12-2019, 09:02 AM
Bavafa Bavafa is offline
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,289

The Approach hub is an awesome way to go if the avionics bus supports it. Unfortunately it is not a workable solution for the CAN bus, i.e. garmin

A big advantage of the hub is that any feature changes/addition is only a cable to the hub which in case of a point to point harness, it is extremely difficult.

Having said that, Approach harness/service is of a highest quality and professionalism and in my experience it is not a nickel and dim type service.
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Old 11-12-2019, 11:30 AM
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mike newall mike newall is offline
Join Date: Jan 2005
Location: Yorkshire, England
Posts: 2,000

We used Approach on our RV7 back in 2009.

Super professional, long chat at Sun n Fun prior to dealing with them.

Subsequently wanted to add in HS34 to the Dynon fit, sent the hub back, they reconfigured and supplied the extra cable within a very short time.

Agree that the modern installs seem to be going in a different ditection, but look at the RV12 - basically a very similar install as per Approach.
"I add a little excitement, a little spice to your lives, and all you do is complain!" - Q

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Old 11-12-2019, 05:07 PM
Michael Henning Michael Henning is offline
Join Date: Jun 2011
Location: Nashua, NH
Posts: 536
Default Thanks

Thanks for the replies everyone 👍
RV-4 #2750
WW150C Prop
1018 lbs
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