Twinstarr help.

[Brent_Brown]

I need help with the upper rudder bell crank travel. What is it? Mine is not moving very far at all this is with the push rods at factory settings. Before I drill the HS tube and bolt in place, I need to make sure the rudder travel is right.

[Brent Drake]

Brent, Rick you'd be your best bet. He's had more experience tarring them apart. Or Jim. He's building one now also.
Brent

[Rick Whittridge]

Brent Brown, I did not have a manual with measurements for the pushrods, so when I replaced the pushrods I had to adjust everything at all points. Start out with the bottom control yoke adjusted so they are square & equal spacing when the cables are hooked up & the pedals are squared up as well. Then you can move onto the pushrods & the rudder linkage adjustments. You will have to adjust several times to get everything square & make sure you pedals are squared up.

[Brent_Brown]

If any of you that have a twinstarr can just tell me how far the upper bell crank travels. like from stop to stop. I can get it done. Or tell me how any degrees your rudder moves from stop to stop. You didn't have to build it to tell me this.
Thanks

[Brent_Brown]

OK I know it is cold. but if one of you make it to your twinstarr would you see how far the bell crank end that you can see on the outside of the rudder moves.

[Brent Drake]

Brent. I've not seen mine all month. Building a new rotorhead. I'll go there today for you. But I need a little more detail on the measurement you need. So I will get it correct.

Between what to points do you want measured.

[Brent Drake]

Also, the head I bought from you. Is it an RAF head?

[Brent_Brown]

Yes it is an RAF head. why? I put the RAF papers in the box with it didn't I that has all the parts and part numbers?

If you look at the small push rod that moves the rudder. one end is on the rudder the other is on a bell crank. All I need to know is how far that bell crank travels from left stop to right stop. Or how many degess the rudder travels all left to all right.

Thanks

[Brent Drake]

ok. I'll get it for you today.

[Brent Drake]

Brent Here is a pic of what I think you need. Let me know if it's it. If it is I got some answers for you.

[Caribean_gyro]

The main trick if to have the rudder perfecet horizontal level before you mark and drill the holding bolt. as for the bell crank mine almost rest against the rudder. but this is defined by the pushrods inside the HZ . Now is critical that the pedals be level lower belcrak attachement centered and rudder aligned. then I adjusted the pushrod.

The critical part is that if they dont ravel equally you will have a yaw tendency and will dirve you nuts. Been there done that.

I will be scanning more manual soon to put in Tim web
ChuckP

[Brent_Brown]

This bell crank is the one. How far will it move left and right? OR how many degess will your rudder move from center to all right.

[Brent_Brown]

Brent can I call you? I guess I can't type it very clear.

[Caribean_gyro]

send me you phone I will call from the hangar this afternoon.
CHuckP

[Brent Drake]

call if you want 317-364-0289

[Brent_Brown]

This is what I am looking for. I get 1 and 1/4 inch total. what do you get?

[Brent Drake]

I'll get you the same pic of mine. Today

[Brent_Brown]

I guess you see what I need now. Got to love this web site.
Thanks

[Brent Drake]

yes Brent this web site is very very helpful. I'm sorry I did not get back sooner. But with 0 deg's outside, and now 7" of snow. I'm in the heating business and been very busy. But here is your pic's

[Brent_Brown]

That is it. I guess my push rods are to short I need about an inch more travel but the are made as the book calls for???
Thank you Brent for your help.

[Brent Drake]

No problem, Glad to help. Just had to know just what you were looking for.

[Brent_Brown]

OK; I'm close to the bell crank travel I needed.
Now if one of you Twinnstarr flyers can get the distance between the rudders at the HS.
I have 76.5"

[Brent Drake]

Brent, Show me a pic of which measurement your looking for and I will be at my gyro today. I'll get you one of mine.

[Brent_Brown]

OK try this one.

[Brent_Brown]

I don't have the motor on it so you can use any place on the rudder you want just tell me so I can use the same.
thanks.

[Brent Drake]

Brent, That was nice of you to use a shot of my gyro!

Mine measures 76" side to side.

[Brent_Brown]

Thanks I used in the other big prop thread. Do you have anything to say about that prop. good, bad or why you use it.

[Brent Drake]

Brent I called Sensenich on the prop because so many people were concerned about it might be the wrong prop for the engine. They told be they had all the spec's for the Twinstarr and cuoldbuild me a prop anytime.
I ask them about my large prop. They told me they special made it for the Twinstarr. The lager blade the prop has makes it quieter in flight. I never paid much attention to it. but it does not make hardly any noise. Just the engine and the air moving. I really like it.

[Mike Jackson]

Don't want to jack the thread, but are there plans available for the Twinstarr? Anyone taken up manuf. again?

Thanks,

Mike

[Brent_Brown]

No and not sure.
If you look on this site you will find a long thread about this .

[Mike Jackson]

Thanks Brent