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Jab dual throttle

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rge177(at)yahoo.com
Guest

Posted: Sat Oct 13, 2007 6:37 pm Post subject: Jab dual throttle

I found a small issue with the Jab 601XL 3300

firewall forward, dual throttle installation.  It

looks like the dual throttle from USJabiru was

designed for the pre- 6B8-11 upper angle, and 6B8-10

forward gusset on the 6B7-1 firewall top stiffener.  I

believe these items (bb8-11,6b7-1) were added a couple

of years ago on the 601XL.  The center arm of the

throttle bell mechanism, won't extend over the upper

angle.  I thought about shortening the center arm a

little, and going through the top stiffener, but I'm

afraid I won't have enough throttle travel.  I think I

can fix it by just extending the center arm an inch or

so, but I'm waiting to hear back from USJabiru to see

if they have any ideas or how they've dealt with this.

 Has anyone else dealt with this?

       

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jeffrey_davidson(at)earth
Guest

Posted: Sun Oct 14, 2007 5:18 pm Post subject: Jab dual throttle

Ron, 

	I installed my Jabiru 3300 about a year ago.  I bought it and the

FWF about two years ago.  So I have parts of that vintage.  The FWF came

first by several months.  I have the dual throttle option.  For the center

throttle cable I drilled a hole in the "shelf" with no problems.  I used the

thicker XL shelf with the cabin side U channel and the XL gussets between

the shelf and the nose gear channel.  The current design in this area has

been enhanced further.  I don't have XL plans to follow the current

configuration, but where I had a concern was at the point where the throttle

cables come through the firewall.  The FSF package had simple bulkhead

fittings there.  When the throttle was moved, it tried to flex the firewall

as the outer arms on the throttle rod over the shelf moved up and down.  See

Larry McFarland's web site for the fix using a vertical slot for the

throttle cable through the firewall.  I modified the solution a bit, and

will supply pictures if you like, but the basic design is Larry's.

      Jeff Davidson

 



    I found a small issue with the Jab 601XL 3300 firewall forward, dual

throttle installation.

mosquito56

Joined: 24 Aug 2007
Posts: 77
Location: Laredo, Tx

Posted: Sun Oct 14, 2007 8:03 pm Post subject: Re: Jab dual throttle

I am planning on ordering the jab3300 with dual throttles tomorrow. Please let me know if Jab answers your problem. Vendors seem more than willing to spend hours talking to you to sell you something but when you buy the item and call for support, they say I will get back to you and never do. This is one reason I decided not to order the new Rans S-19. I had alot of trouble with Rans after I bought my S-12. 

  Let me know if you get an answer.

Don

rge177(at)yahoo.com
Guest

Posted: Mon Oct 15, 2007 6:21 am Post subject: Jab dual throttle

Jeff, 

  Thanks for the info, and I would like to see some

pics.  I'll take a look at Larry's site also.



Mosquito56,

  I've had to contact USJabiru 4 or 5 times, and so

far they've been very responsive.  I'll let you know

what they say this time.



Ron

601XL-3300

Time: 06:18:32 PM PST US

From: "Jeff " <jeffrey_davidson(at)earthlink.net>

Subject: RE: Jab dual throttle

Ron, 

	I installed my Jabiru 3300 about a year ago.  I

bought it and the

FWF about two years ago.  So I have parts of that

vintage.  The FWF

 came

first by several months.  I have the dual throttle

option.  For the

 center

throttle cable I drilled a hole in the "shelf" with no

problems.  I

 used the

thicker XL shelf with the cabin side U channel and the

XL gussets

 between

the shelf and the nose gear channel.  The current

design in this area

 has

been enhanced further.  I don't have XL plans to

follow the current

configuration, but where I had a concern was at the

point where the

 throttle

cables come through the firewall.  The FSF package had

simple bulkhead

fittings there.  When the throttle was moved, it tried

to flex the

 firewall

as the outer arms on the throttle rod over the shelf

moved up and down.

  See

Larry McFarland's web site for the fix using a

vertical slot for the

throttle cable through the firewall.  I modified the

solution a bit,

 and

will supply pictures if you like, but the basic design

is Larry's.

      Jeff Davidson

    I found a small issue with the Jab 601XL 3300

firewall forward,

 dual

throttle installation.

lgingell

Joined: 10 Jan 2006
Posts: 50
Location: Lake California Airpark 68CA

Posted: Mon Oct 15, 2007 8:07 am Post subject: Re: Jab dual throttle

I was unimpressed with the dual throttle that I received. I changed quite a few of the parts, and it works great now.

See my log entry around 8/17/2005  at http://lancegingell.com/planebuild/constructionlog.asp to see what I did.



Cheers,

..lance

Zodiac XL/Jabiru3300

http://lancegingell.com/planebuild/

_________________
Zodiac XL/Jab 3300
http://lancegingell.com

rge177(at)yahoo.com
Guest

Posted: Tue Oct 16, 2007 4:20 pm Post subject: Jab dual throttle

Lance,

  The push rod throttle's a good idea.  That would

take a little friction out of the system, and be

smoother.  I'm still waiting to hear from USJab, but I

may use your idea anyway.  That would solve my

problem. 



Thanks,

Ron

Time: 09:16:53 AM PST US

Subject: Re: Jab dual throttle

From: "lgingell" <lgingell(at)matrix-logic.com>

I was unimpressed with the dual throttle that I

received. I changed

 quite a few

of the parts, and it works great now.

See my log entry around 8/17/2005  at



http://lancegingell.com/planebuild/constructionlog.asp

to see what I

 did.



Cheers,

.lance

Zodiac XL/Jabiru3300

mosquito56

Joined: 24 Aug 2007
Posts: 77
Location: Laredo, Tx

Posted: Tue Oct 16, 2007 8:54 pm Post subject: Re: Jab dual throttle

When you buy you kit or order your plane, http://lancegingell.com/planebuild/ is the first site you should study. He has everything explained and pictures are excellent. His site is just as good as Zenith construction photo gallery.



WELL DONE LANCE!!!!!!!!!



Don

Zodiac 601 xl firewall and instruments

N601NV reserved

South Texas

_________________
Don Merritt- Laredo, Tx
.

Gig Giacona

Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA

Posted: Wed Oct 17, 2007 5:31 am Post subject: Re: Jab dual throttle

I got a 403 message on the site.

 	  mosquito56 wrote: 	
		  When you buy you kit or order your plane, http://lancegingell.com/planebuild/ is the first site you should study. He has everything explained and pictures are excellent. His site is just as good as Zenith construction photo gallery.



WELL DONE LANCE!!!!!!!!!



Don

Zodiac 601 xl firewall and instruments

N601NV reserved

South Texas

_________________
W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR

lgingell

Joined: 10 Jan 2006
Posts: 50
Location: Lake California Airpark 68CA

Posted: Wed Oct 17, 2007 7:28 am Post subject: Re: Jab dual throttle

Thanks Don,



Here's a corrected URL: http://lancegingell.com/plane.asp



Cheers,

..lance

_________________
Zodiac XL/Jab 3300
http://lancegingell.com

amyvega2005(at)earthlink.
Guest

Posted: Wed Oct 17, 2007 8:38 am Post subject: Jab dual throttle

Lance, good to hear from you.  how is the plane flying?  what are your chts and EGTs like at cruise?



Juan



--

archerm

Joined: 01 Jan 2007
Posts: 21
Location: Wichta

Posted: Wed Oct 17, 2007 8:46 am Post subject: Jab dual throttle

I have had great service from Jabiru.  I have called them on numerous 

occasions and they have been very helpful.  I will say the firewall forward 

kit is OK but not the same level of quality that the Zodiac kit was.  Hasn't 

been a problem since they have always been there to answer questions.



Good Luck



Matt

www.zodiacxl.com

---

_________________
Matt
www.zodiacxl.com

dredmoody(at)cox.net
Guest

Posted: Wed Oct 17, 2007 9:07 am Post subject: Jab dual throttle

Matt,



There has been a recent modification (hopefully an improvement) to the Jabiru USA supplied cowl for the CH601XL. They have made room to accomodate a change in the ram air cooling ducts, which in turn were changed to accomodate the new style heads with more and larger cooling fins. 



Another thing I was told is that the previous cheek scoops which fed the ram air ducts were not optimally lined up with the airflow from the prop. The new cowl has scoops better aligned and shaped to get more airflow into the cooling ducts. 



Also the chin scoop to the oil cooler has been redone to provide better airflow to the oil cooler for more effective oil temp control.



All these changes became available early this year.



Dred



---- Matt & Jo <archermj(at)swbell.net> wrote: 

 	  Quote: 	
		   

 

 I have had great service from Jabiru.  I have called them on numerous 

 occasions and they have been very helpful.  I will say the firewall forward 

 kit is OK but not the same level of quality that the Zodiac kit was.  Hasn't 

 been a problem since they have always been there to answer questions.

 

 Good Luck

 

 Matt

 www.zodiacxl.com

rge177(at)yahoo.com
Guest

Posted: Thu Oct 18, 2007 5:53 pm Post subject: Jab dual throttle

I talked to Pete today at USjabiru and he said that

most folks with the upper angle on the firewall shelf,

were running the throttle cable through the shelf like

Jeff did.  I asked how much I should worry about the

cable entering the adjuster at an angle (happens at

low throttle settings when cable is pulled) and he

said not to worry about it.  He said he isn't aware of

any premature cable wear doing it like that. I'll

probably install it that way, but add some fairlead to

the shelf to keep the cable from rubbing on the side

of the adjuster.  If I end up with too much friction,

then I may convert to a push rod system like Lance

Gingell installed (by the way, excellent website

Lance.) 



Thanks for all of the input,



Ron

601XL-3300

 	  Quote: 	
		  Ron, 

      	I installed my Jabiru 3300 about a year ago. 
	


 	  Quote: 	
		  I bought it and the FWF about two years ago.  So I

have parts of that vintage.  The FWF came first by

several months. I have the dual throttle option.  For

the center throttle cable I drilled a hole in >the

"shelf" with no problems...
	


Jeff >Davidson

      



 	  Quote: 	
		      I found a small issue with the Jab 601XL 3300

firewall forward, dual throttle installation.  It

looks like the dual throttle from USJabiru was

designed for the pre- 6B8-11 upper angle, and 6B8-10

forward gusset on the 6B7-1 firewall top stiffener...


	


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