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Dimension difference on replacement governor

R

reddogge

Member
Is anyone aware of small dimension differences on the replacement governors sold here or other issues which cause the rpms to go from idle to full out race in 1/4"of throttle movement? I've had two different replacements (one failed and the housing split) and both did the same thing. I googled the problem and found lots of posts from up to 3 years ago stating the same thing but no solutions. When I hold the old one and new one up side by side I can't see any difference outside of a different feel in the arms and spring tension.
 
I'm trying to figure out the same thing on my 8N. So far, I've bent the rod that goes from the governor to the carb. The reduced length seems to make the two cooperate. My next step is to cut the rod, shorten it and weld it back together.

I've bought a new rod, which is the same length as the old rod was before bending it. I've noticed that while the old and new rods will both fit on the carb end, the new rod won't fit on the new governor. It did fit on the old governor. I guess there's more than one thing wrong about the new governor.
 
Another question. What is the governor compensating spring, where is it located and what does it do? It's definitely not the heavy spring that is attached to the governor arm.
 
(quoted from post at 05:43:20 08/04/15) Another question. What is the governor compensating spring, where is it located and what does it do? It's definitely not the heavy spring that is attached to the governor arm.
Click to expand...

Assume you are talking an 8n here. The gov comp spring keeps the governor from moving the throttle lever to the low rpm position. It is located at the rear end of the long gov rod that connects the throttle lever to the gov. FO-4 shows it as throttle spring in fig FO58 in my FO-4.

I changed the carb on one of my 8n's and it completely changed the RPM range of the throttle arm. forever what that is worth.
 
You may simply have the two rods switched.

Just a couple of weeks ago fixed a friends and that was all that was wrong with it.

Zane
 
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