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    Ah, now it becomes clear. I get where you are...

    Ah, now it becomes clear.

    I get where you are coming from Cotten and I don't disagree.

    However, I think we are talking past one another instead of with one another.

    I was and still am...
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    This reply has me confused as it implies there is...

    This reply has me confused as it implies there is no reason to weigh the rotating weight.


    Every balance sheet I've used has one weighing the rotating mass and adding that weight to a percentage...
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    Actually, those holes likely were for balancing. ...

    Actually, those holes likely were for balancing. Many people forget the early u motors used an open female rod, which is substantially lighter than a later closed set.

    When I balanced my wheels...
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    I forgot, yes, at one time the iron heads were...

    I forgot, yes, at one time the iron heads were used as patterns for making alloy heads. These heads have marginal finning and limited deck thickness at the gasket surface. This makes it far easier...
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    You may be confusing oe bars with am repos. The...

    You may be confusing oe bars with am repos. The bars are not a reliable indicator of the chamber volume unless they are nos heads, and even then you will want to measure them.

    As for am heads,...
  6. Part 5 -- Pistons; Ring choices

    While we are talking stroker pistons, let’s take a quick second to talk about piston rings. Because of the sheer abuse these pistons will take, we really don’t want to mess around with too many...
  7. Part 5 -- Pistons; Venolia Custom

    For comparison, here is a custom Venolia piston for a 3-3/8 bore and what appears to be a 5 inch stroke. These are brand new and never run. Notice how “light” they appear on the underside compared...
  8. Part 5 -- Pistons; JE 900 standard bore stoker piston

    We also happen to have acquired a set of JE stroker pistons for a 900. These are .050 overbores and have a compression height sized for 4-5/8 strokes. These pistons were run for a short period and...
  9. Part 5 -- Pistons; S&S stroker piston

    When put on a common wrist pin, the difference in compression height becomes clear. These pistons are also quite light. Together with their wrist pin, but without rings, they weigh 446.1 grams – or...
  10. Part 5 - Pistons; S&S Stroker Pistons

    Next up is the venerable S&S stroker piston. At one time, S&S made these for 900s and 1000s. Today, only 1000s are available and in only one compression height. This particular piston is a TRW...
  11. Part 5 -- Pistons; Vintage Forged Piston sectional

    We’ll jump to the side for a moment and look at early forged stroker pistons. These came in two variety, 2 ring and 3 ring pistons. Three ring pistons were for stock to short strokers and two rings...
  12. Part 5 -- Pistons; Dytch and Axtell

    Here’s the fun part; these pistons and their pins weight 492.5 grams. That is almost 10 grams lighter than a stock piston – which is ¼” smaller in diameter! Part of what makes them so light is that...
  13. Part 5 - Pistons; Axtell and Dytch Vintage pistons

    When you flip the piston over, you can see how different the pin bosses look and how the “heat line” is different. In this case, the dark brown is limited to the center of the crown and becomes...
  14. Part 5 -- pistons; Axtell/Dytch vintage pistons

    Next up is an Axtell 3-1/4 stroker piston. In just looking at the piston, you can tell something is different. The crown is similar to later 1000 pistons and the skirts are very different. These are...
  15. Part 5 - Pistons

    Let’s stop for a moment and look at different pistons. Dr. Dick was kind enough to share with us his collection of pistons and piston sectionals. He kept all these because they clearly show...
  16. The Q Ship Saga Part 5: Stroker Piston Choices

    The Q ship Saga

    Part 5: Stroker Piston Decisions


    We finished the last installment by describing how we evaluated and prepared cases to go out for boring. It is important to note this is...
  17. The Davenport meet treated me very well and I was...

    The Davenport meet treated me very well and I was able to find just about every single major part I was looking for. We now have about 90-95% of a motorbike -- save things like hardware and some...
  18. You'll be pleased to know no 70-up alloy rims...

    You'll be pleased to know no 70-up alloy rims fell into my hands at Davenport. So, we'll be ordering up Borrani repos and appropriate SS spokes/nipples later on this year. The spokes from the...
  19. The rims will be shouldered alloys. I'm on...

    The rims will be shouldered alloys.

    I'm on the fence about original rims vs. repo.
  20. One of the fun things we discovered in looking at...

    One of the fun things we discovered in looking at the cases is the date codes. Remember, these are cases that came together from the factory and were machined in the spring of 1964. If you look at...
  21. However, we bought this project for a reason. ...

    However, we bought this project for a reason. Chuck already has a stock 1959 XLH he rides regularly. It is a great bike and a delight to motor down a country lane. With the Q ship, Chuck wanted to...
  22. The motor is also very solid. Upon tear down no...

    The motor is also very solid. Upon tear down no glaring issues were found. The motor has been bored to .020 over in the past. The pistons are nearly new and the bores are very clean. A simple hone...
  23. Moving onto the power train – we hit the lottery...

    Moving onto the power train – we hit the lottery on the transmission. Everything is in very good order and we have two complete sets of Andrews gears to work with as well as Andrews main and counter...
  24. Wheels and brakes are another story. The rear...

    Wheels and brakes are another story. The rear hub is lovely and shows no evidence of being worked on by a ham-fisted mechanic. The spokes and nipples are in good shape – but the rim is shot. We...
  25. The Q ship Saga Part 4 -- Parts Evaluation One...

    The Q ship Saga Part 4 -- Parts Evaluation

    One of the biggest challenges with a basket case is curbing our enthusiasm. Part of the reason there are so many basket cases available is because...
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