CAMit 3300
{{Short description|Australian aircraft engine}}
{{Use dmy dates|date=January 2022}}
{{Use Australian English|date=January 2022}}
| {{Infobox aircraft begin
| name= CAMit 3300 | image=File:CAMit-3300.jpg | caption=CAMit 3300 }} {{Infobox Aircraft Engine | type = Piston aircraft engine | national origin = Australia | manufacturer = CAMit Pty Ltd | major applications = Light sport aircraft |variants with their own articles= }} |
The CAMit 3300 is an Australian lightweight four-stroke, 6-cylinder, horizontally opposed air-cooled aircraft engine. Direct drive and using a solid-lifter valvetrain, the 3300 develops {{convert|127|hp|kW|0|abbr=on}} at 3300rpm.
The engine was manufactured by CAMit Pty Ltd, of Bundaberg, Queensland, Australia.{{cite web|title=CAMit|url=https://camitaeroengines.net/pages/about-us|access-date=2016-08-01}} CAMit has manufactured engines for Jabiru since the Italian-sourced engines used by Jabiru became unavailable in 1991.{{Cite book|title=Sport Pilot, February 2016|publisher=Recreational Aviation Australia|year=2016|url=https://www.raa.asn.au/storage/54february-2016.pdf|pages=11}}{{Cite web|url=http://web.aeromech.usyd.edu.au/AERO1400/Jabiru_Construction/jabiru.html|title=Background to the Development of the Jabiru|website=web.aeromech.usyd.edu.au|access-date=2016-08-12}} After receiving requests for and producing aftermarket Jabiru engine parts, CAMit went on to produce whole engines incorporating these modifications in late 2013.{{Cite web|url=https://camitaeroengines.net/pages/new-camit-aero-engines|title=New CAMit Aero Engines|website=CAMit Aero Engines|access-date=2016-08-04 |archive-url = https://web.archive.org/web/20160128174309/http://camitaeroengines.net/pages/new-camit-aero-engines |archive-date = 28 January 2016}}{{Cite web|url=http://www.kitplanes.com/issues/32_2/buyers_guide/2015-Engine-Buyers-Guide-Traditional-and-Conversion-Engines_21176-1.html|title=KITPLANES The Independent Voice for Homebuilt Aviation - 2015 Engine Buyer's Guide: Traditional and Conversion Engines - KITPLANES Article|website=www.kitplanes.com|access-date=2016-08-07}}
Many parts are interchangeable with the original components from Jabiru 3300 engine. However, in terms of component design, lubrication, valve train operation and metallurgy, the CAE engine is a completely different motor to the Jabiru design.{{Cite book|title=AirSport, January 2015|last=Garland|first=Ken|publisher=SAAA|year=2015|url=http://saaa.com/Portals/0/Airsport/AirSport_Jan15.pdf|pages=28}}
The CAMit series of engines are classed as Experimental. Each serial number includes 'SLRE', designating 'Solid-Lifter Revised Experimental'.
CAMit Pty Ltd ceased operations and was placed in receivership in October 2016.{{Cite web|url=http://jabiruna.com/demise-of-camit-aero-engines/|title=Demise of CAMit Aero Engines|website=jabiruna.com|access-date=2016-11-23|archive-url=https://web.archive.org/web/20161123202058/http://jabiruna.com/demise-of-camit-aero-engines/|archive-date=2016-11-23|url-status=dead}}{{Cite news|url=http://www.abc.net.au/news/2016-10-10/aviation-manufacturer-camit-closes/7918952|title=Aviation manufacturer closure a sign of the times, industry insider says|date=2016-10-10|newspaper=ABC News|language=en-AU|access-date=2016-11-23}}
Results of R&D program
- Improved crankcase sealing, and the addition of piston cooling jets{{Cite web|url=http://kitplanes2.com/blog/2015/07/new-camit-distributor/|title=New CAMit Distributor|language=en-US|access-date=2016-08-09|archive-url=https://web.archive.org/web/20180930103613/http://kitplanes2.com/blog/2015/07/new-camit-distributor/|archive-date=2018-09-30|url-status=dead}}
- The use of CAE-design 7/16" thru bolts{{Cite web|url=http://www.lightaircraftassociation.co.uk/engineering/TechnicalLeaflets/Mods%20and%20Repairs/TL%203.17%20List%20of%20approved%20Prototype%20mods.pdf|title=LAA Technical Leaflet TL 3.17: List of approved Prototype mods|date=2016-07-05|website=Light Aircraft Association|access-date=2016-08-10}}
- 25+ modifications to the heads, including use of an improved alloy
- Modified barrels: 10+ modifications, including thicker base flanges, improved honing process, and the reversal of piston orientation
- Improved flywheel coupling - lessens the chance of failure through various modifications
- Belt-driven 40A and 15A alternators to help damp the flywheel and provide charging at idle{{Cite FTP |url=ftp://jabiruownersgroup.org/laa_mods/Alternator%20Mod/LAA-MOD%203%20-%20Mod%20Application%20-%20Alternator%20(V4)%20compressed.doc|title=Replace stator, flywheel rotor magnet and regulator with belt driven alternator|last=Licheri|first=D|date=2015-01-08|server=FTP server|url-status=dead|access-date=2016-08-08}}
- Redesigned rocker arms
- Modified oil cooler adaptor (TOCA also available){{Cite web|url=http://kitplanes2.com/blog/2016/07/new-camit-127-hp-engine-at-airventure/|title=New CAMit 127-hp engine at AirVenture|language=en-US|access-date=2016-08-08|archive-url=https://web.archive.org/web/20180930105613/http://kitplanes2.com/blog/2016/07/new-camit-127-hp-engine-at-airventure/|archive-date=2018-09-30|url-status=dead}}
- Breather/oil separator{{Cite web|url=https://camitaeroengines.net/products/breather-oil-separator|title=Breather/Oil Separator|website=CAMit Aero Engines|access-date=2016-08-09 |archive-url = https://web.archive.org/web/20160828055201/https://camitaeroengines.net/products/breather-oil-separator |archive-date = 28 August 2016}} (see photo; device connected to rear end of black hose)
- Redesigned, easy to read oil dipstick
- Honda ignition coils, lifters, and starter clutches are used
- Ignition lead sets are assembled in-house
- CAE-design collectors and twin-exhaust system
A number of accessories were sold to complement both CAE and Jabiru engines.
- CHT Sensors{{Cite web|url=https://camitaeroengines.net/products/engine-cht-sensor|title=Engine CHT Sensor|website=CAMit Aero Engines|access-date=2016-08-09 |archive-url = https://web.archive.org/web/20160828021213/https://camitaeroengines.net/products/engine-cht-sensor |archive-date = 28 August 2016}}
- TOCA (Thermostatic Oil Cooler Adaptor) - blocks off oil passage to cooler until engine is at temperature
- Digital tachometer sensor
- Engine inhibitor system - allows longer storage while preventing bore rust from occurring. Can be applied from the pilot's seat, just on shutdown.{{Cite web|url=https://camitaeroengines.net/products/engine-inhibitor-unit|title=Engine Inhibitor System|website=CAMit Aero Engines|access-date=2016-08-05 |archive-url = https://web.archive.org/web/20160825230640/https://camitaeroengines.net/products/engine-inhibitor-unit |archive-date = 25 August 2016}}{{Cite web|url=http://www.sonexfoundation.com/uploads/August_2015.pdf|title=Shop Talk, May 2015|publisher=Sonex Foundation|access-date=2016-08-08}}
CAE not subject to CASA restrictions
In December 2014, the Australian Civil Aviation Safety Authority (CASA) imposed restrictions on all aircraft powered by Jabiru engines "in response to power-related problems involving engines manufactured by Jabiru Aircraft Pty Ltd (Jabiru)".{{Cite web|url=https://www.casa.gov.au/standard-page/operational-limits-jabiru-powered-aircraft|title=Operational limits on Jabiru-powered aircraft|access-date=5 August 2016}} It was stated in Sport Pilot magazine shortly after this that "the CAMIT [sic] engine is not subject to the Jabiru operational limitations described in 292/14, because the engine is not manufactured by a person under licence from, or under a contract with, Jabiru."{{Cite book|title=Sport Pilot, March 2015|last=Marcel|first=Arthur|publisher=Recreational Aviation Australia|year=2015|url=https://issuu.com/raaus/docs/sport_pilot_43_mar_2015/38|pages=39}}
As of July 1, 2016, these restrictions were lifted for "most Jabiru-powered aircraft in Australia. Stock Jabiru engines that are maintained in strict accordance with Jabiru service bulletins and maintenance instructions are no longer affected by the limitations, which were issued in late 2014."{{Cite web|url=http://jabiruna.com/australia-lifts-restrictions-on-jabiru-engines/|title=Australia Lifts Restrictions on Jabiru Engines|website=jabiruna.com|access-date=2016-08-05|archive-url=https://web.archive.org/web/20160810035220/http://jabiruna.com/australia-lifts-restrictions-on-jabiru-engines/|archive-date=2016-08-10|url-status=dead}}
Specifications
| class="wikitable" style="text-align:center;font-size:90%;" |
| style="background-color:#efefef"
| |3300SLRE |
| Configuration
|6-cylinder opposed |
| First run
|October 2013 |
| Displacement
|3300cc (201cu. in) |
| Bore
|97.5mm |
| Stroke
|74mm |
| Compression Ratio
|8.45:1 |
| Dry Weight
|82.4 kg (182 lbs) |
| Max. Power
|127 hp/95 kW @3300rpm |
| Max. Torque
|285N.m @2900rpm |
| Power to Weight
|1.15 kW/kg |
| Firing Order
|1-4-5-2-3-6 |