Barry Sweeney
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Jab 6 Engine mount

Started this discussion. Last reply by Chris Sinfield Jul 13, 2020. 4 Replies

Hi all,  have decided the fit a new Gen 4 Jab motor to my CH650 kit build and have been trying to get a copy of plan 6-JE-1 that was available when I got my plans. But now Zenith dont do them anymore…Continue


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Barry Sweeney posted a discussion

Jab 6 Engine mount

Hi all,  have decided the fit a new Gen 4 Jab motor to my CH650 kit build and have been trying to get a copy of plan 6-JE-1 that was available when I got my plans. But now Zenith dont do them anymore and during this pandemic thing they have been working from home and my local agent (4000km) away can't seem to find a person that can help him. I would like to think they would have a copy somewhere. So its out to the builders to see if I can find a set of drawings. I live in Perth Western…See More
Jul 10, 2020

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Aircraft Model
Project Status
Building From
Building Experience
Have worked on airplanes before
Flying Experience
Sport Pilot (or Ultralight)
Building and Flying Info / Your Profession / Other Background Info
Professional senior citizen, retired rigger/crane driver, Army 20 yrs, Vietnam Vet

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At 8:16pm on March 14, 2012, Dave Gardea said…

HI Barry,

Here are the parts I ordered from McMaster Carr:
2 ea. bearings 57155K16 - 3/16 ID, 5/16 OD
4  ea. bushings 6391K124

see Mark Hubel's pics at the bottom of this page:

Mark is another Zenith builder. I got the idea from Mark after he mentioned it on Matronics back in October. His pics show where he opened the rudder bearing points to
5/16. I used the same approach. I first opened the holes for the
bearings to slightly under 5/16 and then used a 5/16 reamer. (Note:
Mark chose to use a slightly smaller reamer to make a press fit. I
only had a 5/16 reamer on hand) I then installed the bearings, with
grease holding them in place, one at the top mount of the fuse and the
other at the bottom pivot point on the rudder. For each bearing, you
install one bushing above and one below. This requires you also open
up those holes to 1/4 inch .. see Mark's pic of this using the angle
drill. The above bushings from McMaster Carr are probably slightly
longer than needed, but you can adjust the vertical positioning of the
bushings and bearings by using an appropriate number of AN3 and AN4
washers placed to keep the bearings from sliding out of their reamed
holes. Plan on having on hand a few longer AN3 drilled bolts in
varying lengths as the total assembly at each bearing point is
slightly longer than the original Zenith bolt/bushing approach. Also
the above bushings and bearings are exactly 3/16 id and will require
you remove most of the cadmium plating from the AN3 bolts in order to
fit them over the bolts. I chucked the bolts in my drill press and at
low speed held up some scotchbrite to remove the finish.

I have yet to get a pic of the finished assembly, but
the above and Mark's pics may help you get started.

Here are Mark's comments in a recent email to me: "Dave,  I now have
about 20 hours on it since the update and the rudder is very solid,
this will probably far outlast the aircraft and all of us.
  I did use a reamer to make the hose in the brackets a press in fit.
There are now more pictures at the bottom of I have
not put in comments, that will be coming."



At 5:33pm on February 5, 2012, Chris Hoare said…

Hi Barry

I think my plane tail section kit coming with yours .

Allan is going to give me your contact details but still waiting.

I spoke with Allan and date of arrival at the port is the 13th subject to change.

Then one week to clear customs.

I live in Denmark down south .

Would like to give you a call if posible.

Thanks Chris Hoare


At 2:53am on November 10, 2011, Chris Sinfield said…

Welcome Barry

how far though the kit are you?

I am over in Sydney building an XL almost ready for engine..

Have you made contact with any other WA 650 Builders?



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