RunRyder RC
WATCH
 1 page 1947 views Post Reply
Home✈️Aircraft🚁HelicopterHIROBOHirobo Turbulence › Why is os 91hz pumped engine preferred in turbulance?
04-02-2010 12:06 PM  10 years ago
Topic Vote0Post 1
RussJ

rrApprentice

lockport, new york usa

MyPosts All Forum Topic
Why is os 91hz pumped engine preferred in turbulance?
Hi, I am just curius why Hirobo and people seem to reccomend to use the OS 91hz pumped engine in the Turbulance helicopter. Is there something differant on the Turbulance compared to other 90 size helis?. I hear lots of people saying that the 91hz non-pumped engine will not run correctly and will have a tendancy to lean out in the Turbulance. How come?. The only thing I can think of is that the center-line of the fuel tank might not be located in the proper position in relationship to the carb. Just a thought. I dont have a Turbulance so I dont really know. Russ
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-02-2010 12:16 PM  10 years ago
Against Gravity

rrVeteran

Pottstown PA

MyPosts All Forum Topic
New pump
I am not A fan of OS pumps and regulators, that said there is a new version coming out that is suposed to work better.
Run what you want. it will work!
AG
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-02-2010 02:47 PM  10 years ago
TMoore

rrMaster

Cookeville, TN

MyPosts All Forum Topic
Mine works without a pump.

TM
Part 107.
The only ZERO flight hour certificate in the world.
It's like getting a driver's license without the driver's test.
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
04-02-2010 11:28 PM  10 years ago
Mujenpwr

rrApprentice

Mickleton, NJ

MyPosts All Forum Topic
Mine runs perfect in my Turbulence
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-03-2010 11:32 AM  10 years ago
RussJ

rrApprentice

lockport, new york usa

MyPosts All Forum Topic
OK, thanks guys. I had a hunch the 91hz non-pumped engine probably would be ok in the Turbulance. People probably just say to use the pumped engine because it is marketed as a 3d engine and the Turbulance is marketed as a top of the line 3d helicopter. I was just curius about this. So how do you like your Turbulance so far?. They look like they are really nice. Russ
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-03-2010 02:13 PM  10 years ago
synodontis

rrKey Veteran

United Kingdom

MyPosts All Forum Topic
I wouldn't trust the crappy OS pump. I would, however, trust the new HZ-R regulated engine, which was the reason OS introduced it to solve their crappy pump issues.

But then again, with the YS 91SR-3DS about to come out, nobody would care and they'll all want to go over to that engine unless OS ups the performance of the present HZ to compete with it.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-08-2010 08:59 AM  10 years ago
pani

rrApprentice

Athens, Hellas

MyPosts All Forum Topic
Hi Gents,

While on the subject of vibes, does anybody have any close up pics of their boom mounts attached to the skid bolts instead of the usual position? I've been tired of taking out cut bolts and think I should mount them to the skids. Mind you these are M4 bolts that are getting sheared.

Cheerio
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-10-2010 05:32 PM  10 years ago
Piyaphan1

rrApprentice

Bangkok, Thailand

MyPosts All Forum Topic
Look out for the new YS115 and OS120.
You'll see the YS115 at 3D Masters this year!!!
... of course, in the Turbulence..
Piyaphan
TurbulenceD3 YS-SR3C / TurbulenceD3 YS-SR3C-RR / Lepton
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-10-2010 05:39 PM  10 years ago
synodontis

rrKey Veteran

United Kingdom

MyPosts All Forum Topic
YS115 or do you mean 90SR-3DS? If it's a 115 then it's definitely going to be a new crank case.

As for OS120, well that's would be scary.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-11-2010 04:56 AM  10 years ago
Piyaphan1

rrApprentice

Bangkok, Thailand

MyPosts All Forum Topic
It is a new engine, not the 3DS.

One of the Pro pilot here got the 3DS already.
It is pretty much alike the 3C-RR (cylinder & head).


(pics. from the 3C-RR engine)
Piyaphan
TurbulenceD3 YS-SR3C / TurbulenceD3 YS-SR3C-RR / Lepton
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-11-2010 05:35 AM  10 years ago
Piyaphan1

rrApprentice

Bangkok, Thailand

MyPosts All Forum Topic
Hi pani
I've broken the M3x25 brace support bolts on both of my Turbulences. Now I'm using Titanium M4x25 on the same location and also changed the braces to carbon which is not as rigid as the alu.

That problem solved.

Next problem - M3x22 that hold the skid foot snapped.

Do you notice that Dominik removed the collars and mounted his skid foots directly under the under plate?
Piyaphan
TurbulenceD3 YS-SR3C / TurbulenceD3 YS-SR3C-RR / Lepton
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-11-2010 09:25 AM  10 years ago
synodontis

rrKey Veteran

United Kingdom

MyPosts All Forum Topic
but then why are YS coming out with the 91SR-3DS? Why not just jump to the 115. Only reason would be for those who want longer flight times, and I would assume that the 115 is untested and probably won't be as smooth.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-11-2010 10:00 AM  10 years ago
Piyaphan1

rrApprentice

Bangkok, Thailand

MyPosts All Forum Topic
Maybe because the RR version is only available from World of Heli and Rudiger Feil in Germany. Maybe they want to expand the market for this engine. My 3C-RR is more powerful than the normal SR3C.

I've been told that the 115 is under testing now and you'll see it at the 3D Masters this year.

It is very powerful but the flight time is also down.

I would say many pilots will be happy with the 90 engine but those who compete and serious pilot will prefer the 115.
Piyaphan
TurbulenceD3 YS-SR3C / TurbulenceD3 YS-SR3C-RR / Lepton
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-11-2010 10:05 AM  10 years ago
Brendan78

rrVeteran

NSW Australia

MyPosts All Forum Topic
Is Dominik going to be running the YS115? that's awesome
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-11-2010 01:35 PM  10 years ago
Piyaphan1

rrApprentice

Bangkok, Thailand

MyPosts All Forum Topic
Hi Brendan78

Turbulence+YS115
Piyaphan
TurbulenceD3 YS-SR3C / TurbulenceD3 YS-SR3C-RR / Lepton
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-11-2010 03:13 PM  10 years ago
sky'

rrApprentice

..

MyPosts All Forum Topic
Hi Piyaphan,

what do you mean with: Next problem - M3x22 that hold the skid foot snapped.

Is the thread gronked?

Regards,
Gottfried
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-11-2010 03:33 PM  10 years ago
Piyaphan1

rrApprentice

Bangkok, Thailand

MyPosts All Forum Topic
The bolt that hold the rear skid foot broke a couple of times in flight on my Turbulence. I noticed it after I landed the heli and it was limping as one collar between the skid foot and the under plate is gone.Piyaphan
TurbulenceD3 YS-SR3C / TurbulenceD3 YS-SR3C-RR / Lepton
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-11-2010 03:53 PM  10 years ago
sky'

rrApprentice

..

MyPosts All Forum Topic
Hi Piyaphan,

i have mounted extra collars on the front and rear side (precautionary).

Collars front side:

Collars rear side:

Regards,
Gottfried
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
04-12-2010 07:19 AM  10 years ago
Brendan78

rrVeteran

NSW Australia

MyPosts All Forum Topic
Piyapan1,

YS115 + D3, now that is awesome! how did you find out about the engine and that Dominik is running it??? that's a real jump forward! they needed to do that to keep inline with the power the electrics are putting out.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 1947 views Post Reply
Home✈️Aircraft🚁HelicopterHIROBOHirobo Turbulence › Why is os 91hz pumped engine preferred in turbulance?
Print TOPIC

 6  Topic Subscribe

Thursday, October 29 - 2:49 am - Copyright © 2000-2020 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online