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From: Snag <Snag_one@msn.com>
Newsgroups: rec.crafts.metalworking
Subject: Precision ?
Date: Sat, 21 Jun 2025 12:51:01 -0500
Organization: A noiseless patient Spider
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  I have to replace the engine on my log splitter* ... fortunately I 
happen to have a suitable engine on hand for the replacement . Just 
gotta make a couple of minor changes , like coarse instead of fine 
thread bolts to hold the pump to the motor . And a motor crankshaft 
that's a bit larger than the original .
   So I'm trying to dial the coupler half in on the lathe to bore it for 
the larger shaft . What a piece of shit , machining tolerances must be 
just a vague idea in the shop that machined this thing . Finally got it 
dialed in within a thousandth or so to the face and radius of the part 
and start to machine the bore . Which is neither square nor centered in 
the part . OK , so it was only a couple or 3 thousandths , but damn , 
this part was probably CNC machined and I expected closer tolerances . 
OK , rant is over now .
   * I thought it was fuel starvation , but that wasn't it . No power , 
governor surge , and it dies under load . Choke on/off makes no 
difference and I've done a spray solvent vacuum leak check . I've 
thoroughly cleaned the fuel tank and replaced the carb and all fuel 
lines . This is a Viper 196cc OHV engine , and I have put a lot of hours 
on it in the last 9 or 10 years . Might just be worn out ...
-- 
Snag
We live in a time where intelligent people
are being silenced so that
stupid people won't be offended.