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HelicopterGasser Model RC HelicoptersEngines › lightest 30.5cc zenoah -
09-30-2015 04:49 PM  26 months agoPost 1
kogibankole

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albuquerque/ibadan

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ported,lightened,strokered & compressed.

Flight video coming soon

if im not blade bogging youll find me pack puffing

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09-30-2015 05:08 PM  26 months agoPost 2
rbort

rrProfessor

Franklin, MA - USA

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Is that your own design?

-=>Raja.

MA 1005 Hanson 280, 4142 flts
Spectra 27 3DMax, 3210 flts
Whiplash V1 Hanson 300, 1440 flts
Whiplash V2 Hanson 300, 207 flts

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09-30-2015 05:40 PM  26 months agoPost 3
kogibankole

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albuquerque/ibadan

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Just some finishing touches

You could say so, because no one has quite all the different combination of ingredients I used or ground down. I'll soon get some videos as the truth is in the flying.

if im not blade bogging youll find me pack puffing

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09-30-2015 08:50 PM  26 months agoPost 4
RM3

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Killeen, Texas - USA

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you can still make it lighter... but it comes at a cost...literally.

you can replace all the engine bolts with titanium ones..they weigh 40% less...

you can cut some weight from the carb as well by machining off parts. replace some of the smaller bolts with aluminum ones (like the tiny ones that cover the regulator) and replace the regulator cover with an aluminum one (custom work)

you can even ditch the velocity stack (my engine actually make a bit more rpm without it) but you risk debris getting in there.

internally you can go with ceramic bearings... they also weigh less... but cost ALOT.

I dont recommend machining anything off of the cylinder head nor crank case (hot spots arise otherwise)... they cylinder head needs a certain amount of metal to aid equallizing heat transfer as does the case.

showing a preference will only get you into trouble, 90% of everything is crap...

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09-30-2015 11:00 PM  26 months agoPost 5
kogibankole

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albuquerque/ibadan

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Carb

Where do you remove weight from the carb?

if im not blade bogging youll find me pack puffing

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10-01-2015 02:21 AM  26 months agoPost 6
RM3

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Killeen, Texas - USA

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like removing the idle screw, spring and its mount... you can also machine the extra metal off the outside (have to be really careful how much and where). replace some of the screws with aluminum ones on the regulator cover and you can have it also made from aluminum (custom machining work) as its made from steel.

you can even go as far as using the smaller spark plug from the 20cc, its a bit lighter... but you gotta change out the boot.

its all the little things that add up.

showing a preference will only get you into trouble, 90% of everything is crap...

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10-01-2015 04:33 PM  26 months agoPost 7
kogibankole

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albuquerque/ibadan

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thanks RM3, i will add those tips to my arsenal

if im not blade bogging youll find me pack puffing

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10-01-2015 04:59 PM  26 months agoPost 8
rbort

rrProfessor

Franklin, MA - USA

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Remove the tip

About removing the spring from the carb, I think that's a bad idea.

-=>Raja.

MA 1005 Hanson 280, 4142 flts
Spectra 27 3DMax, 3210 flts
Whiplash V1 Hanson 300, 1440 flts
Whiplash V2 Hanson 300, 207 flts

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10-01-2015 05:14 PM  26 months agoPost 9
ocr231

rrApprentice

Webster MA

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So your claim to the lightest 30.5 cc engine how did you come up with this. What other engines did you compare it to where is the data.

I'm quoting you here on the other post you wrote I like specs.

Did you light in the piston in your engine if so what weight did you come up with to balance your motor and what method did you use to find the weight. what did you do to compress the cylinder and what was your method.

I'm sure not only myself but other people on this form with love to see you a port Work and what tools you use to do it.

Could you please provide us with some of this information and maybe some pictures to go along with it.

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10-01-2015 05:26 PM  26 months agoPost 10
xcellgasman101

rrElite Veteran

WOODWARD, OKLA....

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Remove the tip
About removing the spring from the carb, I think that's a bad idea.
-=>Raja.
like removing the idle screw, spring and its mount
not the return spring,, IDLE screw, spring, and it's mount

John Crotts
www.soonerhelicamproductions.com

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10-01-2015 05:41 PM  26 months agoPost 11
kogibankole

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albuquerque/ibadan

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I came up with this after a lot of material was removed from various parts of the engine and some funds were spent.

None of the high precision work was done by me. I paid to have it done.

There is 22 grams less reciprocating weight. 11g less rotating weight.

Weight was removed from the crank after mechanical vibration analysis.

Its a work in progress, being tested by hard FLYING. Once I get everything TRUED, ( im starting to like that word) I can release more of what I have got to work for me.

if im not blade bogging youll find me pack puffing

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10-05-2015 03:08 AM  26 months agoPost 12
kogibankole

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albuquerque/ibadan

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video- today breaking in the new head

Watch at YouTube

if im not blade bogging youll find me pack puffing

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10-05-2015 03:14 AM  26 months agoPost 13
rbort

rrProfessor

Franklin, MA - USA

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What happened?

Suddenly got rich and lost power? I know you didn't mean to end it right there...

Oooh, just watched it one more time, it even died at the end, I hope the engine is OK?

-=>Raja.

MA 1005 Hanson 280, 4142 flts
Spectra 27 3DMax, 3210 flts
Whiplash V1 Hanson 300, 1440 flts
Whiplash V2 Hanson 300, 207 flts

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10-05-2015 03:15 AM  26 months agoPost 14
kogibankole

rrKey Veteran

albuquerque/ibadan

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Yeah that was the tail end of my flight, i hit normal mode
Engine is fine i flew 2 more tanks

if im not blade bogging youll find me pack puffing

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10-05-2015 03:41 AM  26 months agoPost 15
rbort

rrProfessor

Franklin, MA - USA

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While you were doing 3D?

It looked like you were going into a backwards loop. The drop down seemed really sudden, my engines with my setup don't drop off that quick, I think my governor takes like 2-3 seconds to ramp down. Are you using a governor or is it throttle curves only?

Why did it die when you hit throttle hold? You don't have it setup like that do you?

-=>Raja.

MA 1005 Hanson 280, 4142 flts
Spectra 27 3DMax, 3210 flts
Whiplash V1 Hanson 300, 1440 flts
Whiplash V2 Hanson 300, 207 flts

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10-05-2015 03:56 AM  26 months agoPost 16
turboomni

rrProfessor

East of the Equator

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Interesting to be sure. The real test will be in it's longevity.Not just the engine but the frame too.
I have two Hanson's ,,a 26cc and a 29cc both puh. I bought my 26cc in 2006 I believe and it has never been in for service. Any ways good luck to you and will be very interested how this all pans out.

Setup is everything, All my heli's can fly far better than I can pilot them

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10-05-2015 04:51 AM  26 months agoPost 17
kogibankole

rrKey Veteran

albuquerque/ibadan

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Curves

No gov it's too heavy and complex. And I don't auto rotate unless I have an inflight failure

if im not blade bogging youll find me pack puffing

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10-05-2015 04:55 AM  26 months agoPost 18
rbort

rrProfessor

Franklin, MA - USA

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As far as Autorotations

You may want to pre-practice, because as far as waiting for in flight failures, you're not going to make it.

Engine looked good while it flew, keep up the good work!

-=>Raja.

MA 1005 Hanson 280, 4142 flts
Spectra 27 3DMax, 3210 flts
Whiplash V1 Hanson 300, 1440 flts
Whiplash V2 Hanson 300, 207 flts

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10-05-2015 05:55 AM  26 months agoPost 19
kogibankole

rrKey Veteran

albuquerque/ibadan

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Autos

If the engine quits I can bring the bird down - oh yeah !

if im not blade bogging youll find me pack puffing

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10-05-2015 03:43 PM  26 months agoPost 20
turboomni

rrProfessor

East of the Equator

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Curves
No gov it's too heavy and complex. And I don't auto rotate unless I have an inflight failure
How heavy is this heli and what is so complex about it?

Setup is everything, All my heli's can fly far better than I can pilot them

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HelicopterGasser Model RC HelicoptersEngines › lightest 30.5cc zenoah -
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