rgmwa Posted June 16, 2010 Posted June 16, 2010 The published 130kt cruising speed for the Sierra with a 125hp Jab 3300 is impressive. Anybody know how fast it goes with a 100hp Rotax? Or 80hp Rotax/Jab for that matter. Also curious to know what the fuel tank capacity is. Couldn't find that on the website. rgmwa
wokbat1954 Posted June 17, 2010 Posted June 17, 2010 The size of the tank is 95 litres. All glass construction. Top , bottom, two internal baffles and a metal screw top.
pylon500 Posted June 17, 2010 Posted June 17, 2010 A 912s powered Sierra was built and sent to New Zealand, no idea what happened after that. The instal was a bit more complicated than the Jab, but managed to fit.
rgmwa Posted June 17, 2010 Author Posted June 17, 2010 Thanks for the replies everyone. Looks like a good plane. rgmwa
conran Posted June 19, 2010 Posted June 19, 2010 Its my plan to put a Rotax in later this year, happy to let you know
Garry Morgan Posted June 23, 2010 Posted June 23, 2010 rotax in sierra There are 3 sierra aircraft fitted with rotax motors a cheetah in Auckland is flying with a 80hp 912 and i heard cruising at 115 kts. another in the south island with 100hp rotax in a sierra will fly this week. dont know about the other one.the 100hp rotax looks to perform as good as the 3.3 jab
Garry Morgan Posted June 23, 2010 Posted June 23, 2010 A BRS is fitted to a Cheetah in New castle, the shute is behind the seat and cables to the main spar
jpreou Posted October 27, 2014 Posted October 27, 2014 A 912s powered Sierra was built and sent to New Zealand, no idea what happened after that. The instal was a bit more complicated than the Jab, but managed to fit. It *might* be the one I recently have been enquiring about. Or might not, since that was a Cheetah, but aren't they basically the same? I was told yesterday in email, the following: "My Cheetah was fitted with a Rotax 912 and a 0-120 kt airspeed indicator. I was amazed to find that it actually did 120 in the cruise at full rpm. I had to buy and fit a 0-140 kts airspeed indicator. With the wheel spats fitted it would cruise at 110 kts on 5,000rpm using less than 15lts/hr, one up and 90lts fuel. I stalled it at 35kts and it didn't seem to have any nasty tricks. With magnificent visibility through the bubble canopy and a roomy cockpit it was a fast and economical aircraft." Might, or might not be useful info to people out there... 1
Garry Morgan Posted October 27, 2014 Posted October 27, 2014 A 912s in a sierra will cruise 120kts at sea level.
Garry Morgan Posted October 28, 2014 Posted October 28, 2014 *0 hp jab 125kts full power sea lecel 110 cruise, 3.3 jab seems to varie 137-150kts depending on how the aircraft is set up . sea level 125kts cruise s/l and 137kts tas at 6k
jpreou Posted April 3, 2015 Posted April 3, 2015 Just happened on this thread again and wondered whether there was some more Rotax experience out there by now? There seems to be a growing anti-Jabiru sentiment here in NZ of late, and conversely a seemly equivalently strong pro-Rotax feeling, especially now that have that new 912iS version. Finally got my microlight license and am now doing some transition training from the 'real' microlights (X-Air / Bantam B22) into a Zenith CH601 at a local club (yeah, I know, but it is available and cheap...-ish to fly). Still have the Sierra in mind for a future build, or the Vans RV-12, which flies *beautifully*, but more expensive I think. With a family wedding in/around Sydney in 2016 I'm hoping to get to Taree and catch up with Garry and get a flight to enable me to make a decision. After that, it will be a question of how cheap I can get started! It's what I liked about the Vans RV-8 I was building; I could do it in more easily digestible chunks! Blue skies all :-) 1
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