Author Topic: Throttle hole dimension question  (Read 578 times)

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ahowell

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Throttle hole dimension question
« on: November 23, 2015, 06:46:28 AM »
Malcolm from Great Britain had sent me an email question about the 2-Jet throttle plan pages included in the V-Twin plans:

Q: On sheet 27 left side view there are 2 holes .100. from top and .570 from top and .265 from right hand edge.
I can't work this as to size, depth, threaded etc.  Can you help me with this?



A: Hi Malcolm.  Page 27, looking at the "Left Side View", I'll call the top hole #1, and the bottom hole #2. These are the two holes you inquired about .

For hole#1, the dimension reference is shown to the left of the "Top View": Drill .070 thru and tap 2-56.  Looks like you drill until you "T" into the larger .140 hole at a 90 degree angle.

For hole#2, the dimension reference is shown to the left of the "Front View": Drill .043 dia into fuel inlet, then drill .070 dia x .200 deep and tap 2-56.

This may sound childish, but try cutting out the Top View, Left Side, Front View, and Right Side, then tape them together to form a basic 3-D model, then I think it will mentally come together much clearer.

Hope this helps...