gphil

I have a old Thunder engine .61 that has a OS carb on it that is missing a control arm.I can find newcarbs but noarms. Canone converta control surface arm to go on the carb. This one is held in place with ascrew. Seems like you could drill aarm and put it on.Whatwouldyou suggest? I could just get a new carb but that 50.00 gphil

da Rock

The carbs that are in production have those arms available for a couple of dollars. Tower Hobbies

da Rock

Can you upload a picture of the carb?

Since you bought the OS carb, do you know the part number for the carb? Tower will list the carb and it's parts.

gphil

Carb came on engine and old style I assume.   No back angle on needle.   No #  jus says "made in japan"  I was thinking maybe a servo arm???

R8893

My Feedback: (20)

You can use any arm that you can modify to fit. Been there, done that.
Chuck

Gray Beard

My Feedback: (-1)

If the screw is in the center then most any arm will work. I use a lot of the arms that you find on the LA series of engines. I even use them on YS engines. My LHS usually has them in stock, they are about 2 bucks.

Bozarth

My Feedback: (15)

I have used a nylon futaba servo arm on an OS 1.40RX for years. Works perfect.

Kurt

JohnBuckner

My Feedback: (1)

Have used so many servo arms on that type of carb you tend to loose count or is it perhaps because every time one is broken its usually because I just crashed

John

AdamsBro

My Feedback: (14)

My vote is for the servo arm I have seen it done many times and have used it myself a few times as well.. Not much stress on a throttle arm, or atleast there shouldnt be haha.
Good luck
-Steve E