VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

  #1  
Old 04-16-2010, 08:38 AM
ratc's Avatar
ratc ratc is offline
 
Join Date: Jan 2006
Location: North Yorkshire UK
Posts: 152
Default Rotec Engineering TBI ?

Whilst Looking at alternatives to carburettors and FI on Lycoming 320 engines I came across the Rotec TBI.
Has anyone used the TBI 40-4?
It appears to be the only one which is approved for mogas (which has great appeal to me). Not to mention that it looks beautifully engineered.

For those who have gone before the pros and cons of TBI operations and installation would be useful. Thanks.
__________________
Andy
RV-4
#4411
G-RATC
Reply With Quote
  #2  
Old 04-16-2010, 07:13 PM
Snowflake's Avatar
Snowflake Snowflake is offline
 
Join Date: Oct 2009
Location: Sidney, BC, Canada
Posts: 4,243
Default

I'm interested in this as well, i'd be considering it for an RV-6 though... Also an O-320. E2D, if it matters.
__________________
Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)
Reply With Quote
  #3  
Old 04-16-2010, 07:45 PM
N941WR's Avatar
N941WR N941WR is offline
 
Join Date: Jan 2005
Location: SC
Posts: 12,887
Default

Try searching on "Rotec TBI". At least one RV builder was installing it when they first made this announcement last year.

Not much has been said about it since.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
Reply With Quote
  #4  
Old 04-16-2010, 09:05 PM
petehowell's Avatar
petehowell petehowell is offline
 
Join Date: Jan 2005
Location: MN
Posts: 2,294
Default I have one....

I have been flying too much to take the time to install it. Probably next annual.

RocketBob has one for his -6 and is further along on the install. Maybe he will chime in.
__________________
Cheers,
Pete

Amateur Plane - RV-9A N789PH - 2450+ Hrs
Amateur Radio - KD0CVN
Doggies Delivered - 25+
St. Paul, MN
Reply With Quote
  #5  
Old 04-16-2010, 09:59 PM
Dmadd Dmadd is offline
 
Join Date: Jul 2008
Location: Camas, WA
Posts: 482
Default

FWIW
a pal put one on his O-320 powered Swick Taylorcraft. We took my RV-4 FAB and copied it for the install. He LOVES the thing. Gets way better fuel economy than the pressure carb that came off the airplane. Idles better, and runs better.
Really neat design. Uses nylon gaskets for the slide, and the fuel metering is done with a really unique and incredibly simple design. I'm going to put one on the four as soon as the marvel dribbler needs a rebuild...
Reply With Quote
  #6  
Old 04-17-2010, 12:03 PM
ratc's Avatar
ratc ratc is offline
 
Join Date: Jan 2006
Location: North Yorkshire UK
Posts: 152
Smile Rotec TBI

Dennis, thanks for the input, it does sound promising!
You have answered one of the questions I've posted to Rotec regarding the use of the Vans FAB. No rush, but if there is any chance of a photo of the FAB modification/installation it would be a useful reference.
More importantly having seen one do you think there will be any major issues fitting it in/under the -4 standard 0-320 cowls?
__________________
Andy
RV-4
#4411
G-RATC
Reply With Quote
  #7  
Old 04-17-2010, 01:48 PM
Tony Spicer Tony Spicer is offline
 
Join Date: Dec 2005
Location: Wilmington, NC
Posts: 525
Default

Quote:
Originally Posted by Dmadd View Post

Really neat design. Uses nylon gaskets for the slide, and the fuel metering is done with a really unique and incredibly simple design. I'm going to put one on the four as soon as the marvel dribbler needs a rebuild...
Yep, it's unique. Ben Ellison has been building them for over 25 years. Patent ran out. The Rotec is a copy.

http://www.ellison-fluid-systems.com/

Tony
Reply With Quote
  #8  
Old 04-17-2010, 03:00 PM
SvingenB SvingenB is offline
 
Join Date: Apr 2007
Location: Norway, Stj?rdal
Posts: 598
Default

Quote:
Originally Posted by Tony Spicer View Post
Yep, it's unique. Ben Ellison has been building them for over 25 years. Patent ran out. The Rotec is a copy.

http://www.ellison-fluid-systems.com/

Tony
Same principle, but different design (like a V6 vs a straight 6). Rotec TBI is a sliding carb with a totally separate fuel pressure regulator that when used together makes up a complete single point fuel injection or TBI. It is a simpler design than the Ellison.

Besides, at less than half the price, and can run on mogas and manufactured by an active team using modern manufacturing methods (unlike the stale Ellison), there really is no comparison.
__________________
RV-4 #4520, Slow built
B Svingen
RV-4 Project Log
Onex Project Log

EAA Chapter 573 Norway
Reply With Quote
  #9  
Old 04-17-2010, 03:43 PM
Tony Spicer Tony Spicer is offline
 
Join Date: Dec 2005
Location: Wilmington, NC
Posts: 525
Default

Quote:
Originally Posted by SvingenB View Post
Besides, at less than half the price, and can run on mogas and manufactured by an active team using modern manufacturing methods (unlike the stale Ellison), there really is no comparison.
To date, there have been no O-320 PIREPS posted on VAF. So how can you say there's no comparison? Google can't find any either.

Tony
Reply With Quote
  #10  
Old 04-17-2010, 04:27 PM
Dmadd Dmadd is offline
 
Join Date: Jul 2008
Location: Camas, WA
Posts: 482
Default

Tony,
My understanding is that it is a lot like Ellisons design, but improves a few key areas with some materials that didn't exist when Ellison designed his. I'm relying on my pals explanation here, be cause he has owned both, but I've only seen the Rotec.

D

Quote:
Originally Posted by Tony Spicer View Post
Yep, it's unique. Ben Ellison has been building them for over 25 years. Patent ran out. The Rotec is a copy.

http://www.ellison-fluid-systems.com/

Tony
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 08:35 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.