Jab engine mount

I bought a Jab 330 and FWF kit back in December, from Jabiru N.A.

There is a measurement discrepancy on the engine mount, so I sent an email to Lightning - four times, the first on July 08 and the last on Aug 13, and no reply.

I am pasting the email below... Does anyone have an idea on how to fix this problem?

I was doing a quick trial fit of the engine mount on the (Zodiac CH601) firewall, when I noticed a discrepancy between bolts on the firewall and holes on the mount.
The distance between the top bolts is, per plans, 856 mm, but the distance between the centre of the (top) holes on the engine mount is 860 mm.
The bottom holes are properly spaced, at 610 mm.

Views: 726

▶ Reply to This

Replies to This Discussion

Permalink Reply by Jay Carter on August 19, 2018 at 7:09pm

Are you saying the mount is 4mm wide? If so, pull it together and put in the bolts. A welded assembly is seldom perfect. Common on motor mounts.

Permalink Reply by Carlos Sa on August 19, 2018 at 8:32pm

Hello, Jay

I could do that, but then the opposite end of the mount gets distorted...

Perhaps the best approach is to attach the engine to the mount and then squeeze the top arms so the (hopefully) match the bolts.

Wondering what others have done...?

Permalink Reply by Carlos Sa on August 23, 2018 at 9:56am

Thanks Jeff - I do have the video, will take another look

Permalink Reply by Don Burkholder on August 20, 2018 at 12:40pm

I agree, I would not "pre-stress" an assembly designed to take the stress forces from the engine torque and pull of the prop. 

Permalink Reply by Carlos Sa on August 23, 2018 at 9:56am

Don, thanks for the comment

Permalink Reply by John Austin on November 22, 2018 at 8:09am

No defense of Arion Lightning (who took over the Jabiru NA dealership), but did you ever just simply give them a telephone call?  Most vendors do very well with email support, but some, not so good!  I had the same experience with their predecessor, Jabiru NA - I don't think they ever responded to an email support query. However, if I called them during normal business hours, virtually 100% of the time I was immediately connected to Pete Krotje and he promptly and satisfactorily took care of my question or problem.

I've had the same experience with a few (very few!) other vendors - while most have great email support, some do much better at answering the phone!  :>)

John

N750A

Permalink Reply by Carlos Sa on November 24, 2018 at 5:52pm
John, I think I have been spoiled by ZAC... They reply to all my emails within 24 - 48 h,and when they done't, it's usually because they are busy with something (such a Sun + Fun, Osh, etc.)

You are correct about the phone... but as luck (or lack thereof), when I called Lightning this week, they were closed for Thanksgiving...


Thanks for your comments
Permalink Reply by Roland Ashby on February 17, 2021 at 9:00am

I have called them 4 times in the last month and sent at least 4 emails to Arion, still no response.  Calls go to voicemail and emails are not returned.   I have a 601XL FWF package, but I am going to install the 3300 on a 750.  Does anyone know if the engine mount is the same between the 601 and 750?

Permalink Reply by Carlos Sa on February 17, 2021 at 9:24am

Since November, I have been sending emails to them (some four or five).

One of them to Cindy, who usually replies promptly, but nothing...

I haven't tried calling yet.

As for the mount, I don't think they are the same: the 750 has an extra attach point on the firewall side, top.

Do a search on "engine mount CH-750 jabiru" and "engine mount CH-601 jabiru", and compare...

Permalink Reply by Roland Ashby on February 17, 2021 at 11:44am

Thanks Carlos for the reply.   I have done a number of searches, however have not found the plans for the 750 mount to compare it to the actual (and plans) of the 601 mount that I have.   Any chance you have a drawing of the 750 mount?

Permalink Reply by Carlos Sa on February 17, 2021 at 11:47am

Roland, sorry, but I don't.

I am building a 601, and bought the mount ready (from Arion).

My project

So my statement regarding differences is solely based on internet pictures.

Permalink Reply by Roland Ashby on March 23, 2021 at 4:09pm

Thought I would post an update.  Talked to Nick today at Jabiru USA (or Arion).  He was extremely helpful and I will be getting some components of the FWF for the 750 for the my Gen 1 3300.    Found out that Nick does support specifically between 10:30-11:30 CST and 3:30-4:30 CST.  Return emails are not a strength, but getting support on the was excellent.

RSS

New from Zenith:

Zenith Planes For Sale 
  

Classified listing for buying or selling your Zenith building or flying related stuff...

Custom Instrument Panels
for your Zenith:

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, Dynon and Garmin avionics, and more.

Zenith Homecoming Tee:

Zenair Floats

Flying On Your Own Wings:
 A Complete Guide to Understanding Light Airplane Design, by Chris Heintz

Builder & Pilot Supplies:

Aircraft Insurance:

 
 

West Coast USA:

 
Pro Builder Assistance:

 

Transition training:

Lavion Aero

K&S Aviation Services

Aircraft Spruce & Specialty for all your building and pilot supplies!

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

© 2024   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service