OS Max 10 FP remote needle

That needle valve setup has been used for years by OS. The needle you have pictured is the OS 1A needle valve assembly. I have about a dozen brackets as shown. In addition, the later model FP.35's-40's came equipped with the same setup and were listed as the FP-S versions just like the LA.25-.46 S versions. The LA series used different needle valve assemblies and a slightly different bracket. The early version LA used the same bracket which morphed into a metal bracket which was later a part of the plastic backplate. One needle valve assembly that's UNOBTAINABLE is the FP.10 control line needle. It's a excellent quality needle and it was made specifically for the FP.10 as no other models used that particular needle. I'm fortunate to own 3 of them.

Thanks Greg and Ken for the info , I looked and couldn't find any info on it / In fact i have more trouble looking up OS parts ,,, I have a OS Max 20 R/C that i need a needle for and have looked for 30 mins. now and still cant decide what one it takes Its the older one no markings on it , If its not to much trouble ?!

The Type 21 carb uses needle 22281977 part of needle assy 22281903.

Thanks got one coming for $12 shipped Amazon / Hobbico brand repl;emt.

Hi getback,

I have busted allot of rc OS needle valves.
The nipple that goes in the carb is hard to get.
Same needle valve works from .10-.40 or beyond.
Never seen a .10 with remote needle setup like that, and a later muffler.
Nice score.
Take care,
Have fun,
Dave
( I ran the guts out of older OS.25s to try and beat later FXs. The Magnum brand parts work.)

Hi Eric, I've posted this photo of my .10FP/RC before, but here it is again. Note the same part# that Greg referenced earlier in the thread.



I bought the engine and the remote needle kit from Tower, over 20 years ago. All is still new in the box.. including two RC kits sized for it; an Ace "All Star" bipe.. and a Herr "Lil' Extra" ARF.

The needle valve assembly on the remote looks like it could be the same as the carb mounted one. The difference may just be an extra nut to hold it on to the sheet metal bracket, and an additional nipple on the carb. It could be fairly easily made up with the right tap and die. The smaller .10 may be a different thread than the other bigger engines.