START HERE |
|
Register | FAQ | PM | Events | Groups | Blogs | Calendar | Mark Forums Read |
Unregistered
|
Gasser Helicopters Gasser Specific Discussion |
|
LinkBack | Thread Tools | Display Modes |
05-08-2014, 08:17 AM | #21 (permalink) |
Registered Users
Join Date: Jun 2005
Location: Houston TX / Bend Or
|
__________________
We had a great country once. You know what made it great? “I can.” Then the weak came along, “the I cant’s” and destroyed it. |
Sponsored Links | |||
Advertisement |
|
05-08-2014, 09:08 PM | #22 (permalink) | |
Registered Users
Join Date: Jan 2010
|
Quote:
Is there anyway to add an auto tensioner on the fan belt?
__________________
XL Power 700v2 Nitro NME - OS 105HZR - Power Tune - Rail 716/106 - Brain2 HD |
|
05-09-2014, 04:09 AM | #23 (permalink) |
Registered Users
Join Date: Mar 2005
|
Woohoo Joey!!! I reckon you've nailed cooling duties with that design.
Get it done buddy! Not sure how, but let me know if I can help in any way |
05-09-2014, 04:20 AM | #24 (permalink) |
Registered Users
Join Date: Mar 2005
|
I've been doing some basic calculations for a project of mine recently - no real idea if I'm right
But those calcs show a 4 blade head with 550mm blades using a gear ratio around 8.3:1 gear ratio might be a good choice for this engine. |
05-15-2014, 03:21 AM | #25 (permalink) |
Registered Users
Join Date: Jan 2010
|
Is this conversion going to use standard servos or 500 size servos? Would it be possible to choose? I'm not familiar with the differences between the 500 and 570 but I believe the servo size is.
I know using smaller servos would mean having to purchase more expensive higher performing servos but it would be another place to loose some weight.
__________________
XL Power 700v2 Nitro NME - OS 105HZR - Power Tune - Rail 716/106 - Brain2 HD |
05-15-2014, 04:39 AM | #26 (permalink) |
Registered Users
Thread Starter
Join Date: Apr 2011
|
Hey mitsudriver274,
No the 570 will use standard size servo's, cyclic and rudder.........but, I am seriously considering a small servo for the throttle. I know this may not be popular but spending a lot of effort to reduce weight, would kind eek me to have a full size servo for throttle. If there are real objections, I'd like to hear them. Thoughts anyone, bad experiences etc. Thanks Joey. |
05-15-2014, 07:52 AM | #27 (permalink) |
Registered Users
Join Date: Nov 2008
|
A high quality mini servo on the throttle should work fine.
__________________
Tom TRM Power CAUTION - my posts are based on my experiences, yours may be different. |
05-15-2014, 07:57 AM | #28 (permalink) | |
Registered Users
Join Date: Jun 2005
Location: Houston TX / Bend Or
|
Quote:
As i do not see the need to run some super duper high torque, high speed servo on the throttle, I have no problem with a mini servo there. You can get a good mini servo for about 30 bucks. The Futaba S3115 is a great servo and is just $19.99. So lets save the weight
__________________
We had a great country once. You know what made it great? “I can.” Then the weak came along, “the I cant’s” and destroyed it. |
|
05-15-2014, 11:31 AM | #29 (permalink) |
Registered Users
Join Date: Jun 2013
|
the point of a fast servo on the throttle is: your throttle servo needs to be faster than your cyclic servos. if you can ad pitch faster than you can add throttle, then it is easier to bog your motor
__________________
Gasser Mike Team KDE Direct, TRM Power, Byron Fuels, MKS Servos |
05-15-2014, 11:42 AM | #30 (permalink) |
Registered Users
Join Date: Jun 2013
|
and you can find many mini servos to do that like THIS one.
__________________
Gasser Mike Team KDE Direct, TRM Power, Byron Fuels, MKS Servos |
05-15-2014, 12:01 PM | #31 (permalink) |
Registered Users
Join Date: Jun 2005
Location: Houston TX / Bend Or
|
Your engine will never respond that fast, that's why a high speed servo is pointless on the throttle.
__________________
We had a great country once. You know what made it great? “I can.” Then the weak came along, “the I cant’s” and destroyed it. |
05-15-2014, 12:48 PM | #32 (permalink) |
Registered Users
Join Date: Jan 2010
|
I have no objections to running a mini throttle servo, in fact that is what I have installed on my current gasser and also what the n5c comes setup for as well.
I'm using a hitec hs82mg, uses a standard size hitec arm and weighs 30 grams less than the jr DS8717 that was in there before. There is no need to have a fast powerful throttle servo. A) the only load on the throttle servo is my return spring. B) servos are rated for speed in a 60 degree sweep, the throttle servo will never move that much in flight, these tests are also done with zero load. Anywhere that weight can be saved is a huge positive, if someone comes out with a 600 stretch kit for the 570 this may be a killer setup.
__________________
XL Power 700v2 Nitro NME - OS 105HZR - Power Tune - Rail 716/106 - Brain2 HD |
05-15-2014, 03:35 PM | #33 (permalink) | |
Registered Users
Join Date: Jun 2013
|
Quote:
the engine itself may not respond that quickly, but it will never have the chance to try if your servo is to slow.
__________________
Gasser Mike Team KDE Direct, TRM Power, Byron Fuels, MKS Servos |
|
05-15-2014, 03:44 PM | #34 (permalink) |
Registered Users
Join Date: Nov 2008
|
It is possible that a gasser responds differently than the nitro or the way a tail servo responded with a specific gov.. A friend swears you need a rudder servo on the throttle. I installed a tail servo on the Goblin using a GV1 and can not tell any response difference between a decent cyclic and tail servo.
Back to the topic at hand, Lets encourage Joey to build a few prototypes....
__________________
Tom TRM Power CAUTION - my posts are based on my experiences, yours may be different. |
05-15-2014, 04:34 PM | #35 (permalink) |
Registered Users
Join Date: Jun 2013
|
I would like to see this bird be built. if it flys as good as the goblin 700 then that would be awesome. surely the second go around with this motor will be better, OS is an educated bunch, they have made many great motors before. this heli looks great, as does the other goblin. So when can we see a vid of the first prototype kit fly?
__________________
Gasser Mike Team KDE Direct, TRM Power, Byron Fuels, MKS Servos |
05-18-2014, 01:52 PM | #36 (permalink) |
Registered Users
Join Date: Jan 2010
|
What clutch will be used in this conversion?
Edit: re read the first post. Question answered. Do you believe a 700 clutch is required? So far my 600 size clutch has been holding in hard maneuvers.
__________________
XL Power 700v2 Nitro NME - OS 105HZR - Power Tune - Rail 716/106 - Brain2 HD Last edited by Sowa; 05-18-2014 at 07:35 PM.. |
05-19-2014, 04:59 AM | #37 (permalink) |
Registered Users
Join Date: Mar 2005
|
Hiya Joey.
Any further progress to report? |
05-19-2014, 06:32 AM | #38 (permalink) |
Registered Users
Thread Starter
Join Date: Apr 2011
|
Hey Sorry Guys,
Been soooooo busy last 2-weeks, work stuff. But I'm back on it this week. To answer question regarding clutch, its a lynx Gasser Clutch with Billet 4140 Clutch Bell. Hope to have more updates this week, thanks again all for the encouragement, I'll do my best. Regards Joey. |
05-19-2014, 04:00 PM | #39 (permalink) | |
Registered Users
Join Date: Apr 2004
|
Quote:
by using the larger clutch and then custom fitting the bell for a tight clearance this shoud be even better
__________________
Carey Shurley Proprietor - Gas Powered Helicopters |
|
Thread Tools | |
Display Modes | |
|
|