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25 size bobcat with Lambert micro turbine

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Old 12-30-2007, 01:07 AM
  #1
csetting
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Default 25 size bobcat with Lambert micro turbine

New 25 size Bobcat with lambert turbine. My question is what thrust angle are you guys putting your motors at on the nitro models Bobcats.
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Old 12-30-2007, 01:30 AM
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Default RE: 25 size bobcat with Lambert micro turbine

That looks neat and cool !!!! How did you ever get a Lambert?? I'd heard they were almost impossible to get ahold of..............

I'd check with John Wright (editor of RCJI) and see what he did to his Wren 44 powered B'cat 50.......
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Old 12-30-2007, 01:34 AM
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Default RE: 25 size bobcat with Lambert micro turbine

Very cool!!Where can an average Joe buy one of those Lambert Micros? How much $ would one expect to pay for same?
Thanks,Steve
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Old 12-30-2007, 04:21 AM
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Default RE: 25 size bobcat with Lambert micro turbine


I've set my MW44 at 6 Deg.

http://www.rcuniverse.com/forum/fb.asp?m=6275678&key=


Believe John Wright and Dave Wilde used 5 Deg.

Eric


Quote:
ORIGINAL: csetting

New 25 size Bobcat with lambert turbine. My question is what thrust angle are you guys putting your motors at on the nitro models Bobcats.
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Old 12-30-2007, 05:03 AM
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Default RE: 25 size bobcat with Lambert micro turbine

The Lambert Kolibri gives only 15 Newtons of thrust... is that enough ?...
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Old 12-30-2007, 06:02 AM
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Default RE: 25 size bobcat with Lambert micro turbine

On the larger models 5-6 degs seems to work well.

Te 25 bobcat and Colibri sounds like a cool combo - would love to hear how it goes im also curious about the 1.5kg thrust.
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Old 12-30-2007, 04:42 PM
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Default RE: 25 size bobcat with Lambert micro turbine

The flying weight of the Bobcat is quoted at 1800 grams, 15 newtons is 1800 grams, looks like a winner.

A friend had a Lambert in a Twinstar & it's a missile! - John.
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Old 12-30-2007, 06:47 PM
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Default RE: 25 size bobcat with Lambert micro turbine

Chris, I think you got yourself a good match.

Can't wait to see it fly!!!
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Old 12-31-2007, 03:05 AM
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Default RE: 25 size bobcat with Lambert micro turbine

I have all three Falcons (Bobcats) the 25 with an OS 25 FX the 50 size with an OS 55 AX and the 120 size with a Wren 54 turbine.

The two with the pushers fly very odd and are actually not that nice to fly. The 120 size with the wren is by comparrison a dream to fly. I think the key difference is either the prop wash over the tail or the fact that the two smaller ones have full length ailerons and no flaps. The larger 120 size has flaps and tip ailerons. Either way somthing gives the smaller ones issues. I will be looking forward to seeing how yours flies with the lambert

Regards

Dennis

www.densplanes.co.uk
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Old 12-31-2007, 09:15 AM
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Default RE: 25 size bobcat with Lambert micro turbine

bigplumbs - i flew many 50 size bobcats with pushers, what kind of issues are you reffering to ? i really liked the ones i flew.
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Old 12-31-2007, 11:40 AM
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Default RE: 25 size bobcat with Lambert micro turbine

Chris, please keep us updated, I just received my Lambert Kolibri last week and I'm looking for a plane a bit more serious than a twinjet.

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Old 01-01-2008, 04:52 AM
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Default RE: 25 size bobcat with Lambert micro turbine


Quote:
ORIGINAL: Gaspar

Chris, please keep us updated, I just received my Lambert Kolibri last week and I'm looking for a plane a bit more serious than a twinjet.

Gaspar

Hi Gaspar,

How about this B-5 for the Kolibri ? Rear end would allow, if I am not mistaken, a thrust tube of 52mm diameter... (162 S$ = about 75 euro)
I saw it at Rotor Hobbies Singapore last month.

Nicolas.
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Old 01-03-2008, 04:41 PM
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Default RE: 25 size bobcat with Lambert micro turbine

Hi csetting
have you had a chance to fly the bobcat yet?...I am looking forward to your flight report on how it went.
I have a T32 which is curremtly in a twinjet, and would like to fit it to another airframe...My engine is around 2 years old and still going strong, they are a beautiful peice of engineering and a credit to Martin Lambert.
Kind Regards
Craig Dyer
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Old 01-06-2008, 08:19 PM
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Default RE: 25 size bobcat with Lambert micro turbine

SWEET! I have the Falcon 25 modified with retracts and flying as an electric pusher. In vid below it was clocked at 139mph on one of the passes. The inverted pass was 120mph.

Where can I get one of those micro turbines and how much are they???

http://www.rcgroups.com/forums/showt...84#post8490044

Thanks!!

Brian
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Old 01-07-2008, 04:37 AM
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Default RE: 25 size bobcat with Lambert micro turbine

http://www.lambert-modellturbinen.de/
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Old 01-07-2008, 07:57 AM
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Default RE: 25 size bobcat with Lambert micro turbine

TUMBLER, whoosh that was fast !!

a couple questions:
1. which ESC you got there ? whats the amp draw ?
2. which retracts ?
3. how did you mount the motor ?
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Old 01-07-2008, 08:05 AM
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Default RE: 25 size bobcat with Lambert micro turbine

Hi
I fly my Micro in a TwinJet.

The Twin goes above 200 km/h.
I think each EDF Jet which is recomended for a 69 Fan is a good choise for the lambert.
Here I think about HET or the little Schreiner Viper and RBC-Kits
The BD 5 from aero-works (I have it in my hangar) is to small in the tail area and I think, not strong enougth build.
Price is 2100 € for export and I think, delivery time about 3 month.

It is crasy, to fly a elapor modell with a turbine, but it is wonderful.

Christian
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Old 01-07-2008, 09:37 AM
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Default RE: 25 size bobcat with Lambert micro turbine

Ouch, the cost of that turbine is way more than I expected. Its more than a bigger one. Oh well, she will have to stay electric.

Here is a lik to a build thread I did that will answer all your questions. I am using a Jetti 77, Medusa 36mm 1300 kv motor runnign direct drive, 6s 3700 batteries, 700mah mimh rx battery, 30 size retracts from Hobby lobby and mechanical nosegear from Robart(heavier one with 1/8 strut, not 3/32). Weight is around 5.5 lbs. Mounted the motor my modifying the existing mounting blocks slightly to raise them up a bit and then used a clamshell motor mount to hold it between the blocks. There are plenty of pics here.

http://www.rcgroups.com/forums/showthread.php?t=738285



Brian

Quote:
ORIGINAL: i3dm

TUMBLER, whoosh that was fast !!

a couple questions:
1. which ESC you got there ? whats the amp draw ?
2. which retracts ?
3. how did you mount the motor ?
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Old 01-07-2008, 10:19 AM
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Default RE: 25 size bobcat with Lambert micro turbine

Thanks for the link.
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Old 01-07-2008, 12:03 PM
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Default RE: 25 size bobcat with Lambert micro turbine


[quote]ORIGINAL: TUMBLER

Ouch, the cost of that turbine is way more than I expected. Its more than a bigger one. Oh well, she will have to stay electric.

we could always ask jet joe to build us one for $499.99

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Old 01-16-2008, 10:30 PM
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Default RE: 25 size bobcat with Lambert micro turbine


Quote:
ORIGINAL: csetting

New 25 size Bobcat with lambert turbine. My question is what thrust angle are you guys putting your motors at on the nitro models Bobcats.

I have now a Lambert Autostart Kolibri on order. Can you tell me how the Bobcat 25 flies with it ??

Nicolas.
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Old 01-27-2008, 07:43 PM
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Default RE: 25 size bobcat with Lambert micro turbine

I have now a BobCat/Falcon 25 coming my way with the AirPower RA-260 Air Micro Retract Set - 3 Gear.
The Lambert Kolibri is ordered too.

Has someone flown his BobCat 25 so far ? Anything I should know for building or flying ? What's your set-up, guys ? Tank ? Servos ?...

Thanks for all input...
Nicolas.
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Old 01-27-2008, 10:10 PM
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Default RE: 25 size bobcat with Lambert micro turbine

I just finnished my Bobcat. I have a Hayes 12oz main tank and a 2oz round header tank on top of the hayes, fuel good for 9-10 min. Servos JR 168 digi everywhere eccept rudders hytec 65 metal gear. I will fly first without retracts. If all gose well i will add retracts right away. As soon as the rain stops I will fly and get back to every body with a flite report.
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Old 01-27-2008, 10:13 PM
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Default RE: 25 size bobcat with Lambert micro turbine

I just finnished my Bobcat. I have a Hayes 12oz main tank and a 2oz round header tank on top of the hayes, fuel good for 9-10 min. Servos JR 168 digi everywhere eccept rudders hytec 65 metal gear. I will fly first without retracts. If all goes well i will add retracts right away. As soon as the rain stops I will fly and get back to every body with a flite report.
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Old 01-28-2008, 06:05 AM
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Default RE: 25 size bobcat with Lambert micro turbine

Please do !
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