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techtalk:ref:tools147 [2023/12/20 16:43] hippysmack |
techtalk:ref:tools147 [2024/01/24 21:50] (current) hippysmack |
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| ====== Types of Reamers ====== | ====== Types of Reamers ====== | ||
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| * Flute spirals. ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/160109-changing-out-cam-bushings-help-on-a-couple-of-questions-appreciated/page3?t=1717904&page=3)) \\ All 3 reamers below are "right hand cut" meaning they all cut while being spun in the same direction as a drill bit. \\ Reamers come in different cuts as in straight, forward spiral, reverse spiral etc. Looking at the last one, you may think is cuts in reverse rotation but it does not. | * Flute spirals. ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/160109-changing-out-cam-bushings-help-on-a-couple-of-questions-appreciated/page3?t=1717904&page=3)) \\ All 3 reamers below are "right hand cut" meaning they all cut while being spun in the same direction as a drill bit. \\ Reamers come in different cuts as in straight, forward spiral, reverse spiral etc. Looking at the last one, you may think is cuts in reverse rotation but it does not. | ||
| * Straight reamers are by far the least expensive to buy. It also makes holes that aren't true cylinders. \\ They can have a lobed wall shape. This lobing goes hand in hand with amount of material being reamed away. \\ In our case it's a small amount of removal so the lobing is also very small. \\ For us it's ok for pinion & #2. But a spiral is nicer albeit usually 2X the cost. \\ It's also fine for 1-3-4 if bushes have no oil groove in bore. \\ Grooves in bore need the gap bridging action that spirals provide. \\ This is where you need spirals. | * Straight reamers are by far the least expensive to buy. It also makes holes that aren't true cylinders. \\ They can have a lobed wall shape. This lobing goes hand in hand with amount of material being reamed away. \\ In our case it's a small amount of removal so the lobing is also very small. \\ For us it's ok for pinion & #2. But a spiral is nicer albeit usually 2X the cost. \\ It's also fine for 1-3-4 if bushes have no oil groove in bore. \\ Grooves in bore need the gap bridging action that spirals provide. \\ This is where you need spirals. | ||
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| |1 thru 5 ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/160109-changing-out-cam-bushings-help-on-a-couple-of-questions-appreciated/page3?t=1717904&page=3))|6. Shell Reamer ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/160109-changing-out-cam-bushings-help-on-a-couple-of-questions-appreciated/page3?t=1717904&page=3))| | |1 thru 5 ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/160109-changing-out-cam-bushings-help-on-a-couple-of-questions-appreciated/page3?t=1717904&page=3))|6. Shell Reamer ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/160109-changing-out-cam-bushings-help-on-a-couple-of-questions-appreciated/page3?t=1717904&page=3))| | ||
| |{{:techtalk:ref:tools:reamers_1_by_dr_dick.jpg?direct&300|}}|{{:techtalk:ref:tools:reamers_3_by_dr_dick.jpg?direct&300|}}| | |{{:techtalk:ref:tools:reamers_1_by_dr_dick.jpg?direct&300|}}|{{:techtalk:ref:tools:reamers_3_by_dr_dick.jpg?direct&300|}}| | ||
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| |A reamer cuts along its chamfer angle, \\ not on its outside diameter. ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/160109-changing-out-cam-bushings-help-on-a-couple-of-questions-appreciated/page3?t=1717904&page=3))|Bridge and Hand Reamers have a starting taper that \\ is too long for blind hole work. Each has a different \\ starting taper angle. ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/160109-changing-out-cam-bushings-help-on-a-couple-of-questions-appreciated/page3?t=1717904&page=3))| | |A reamer cuts along its chamfer angle, \\ not on its outside diameter. ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/160109-changing-out-cam-bushings-help-on-a-couple-of-questions-appreciated/page3?t=1717904&page=3))|Bridge and Hand Reamers have a starting taper that \\ is too long for blind hole work. Each has a different \\ starting taper angle. ((photo by Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/160109-changing-out-cam-bushings-help-on-a-couple-of-questions-appreciated/page3?t=1717904&page=3))| | ||
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| {{techtalk:ref:tools:cam_bushing_installer_43_by_hippysmack.jpg?direct&300|}} | {{techtalk:ref:tools:cam_bushing_installer_43_by_hippysmack.jpg?direct&300|}} | ||
| {{techtalk:ref:tools:cam_bushing_installer_44_by_hippysmack.jpg?direct&300|}} {{techtalk:ref:tools:cam_bushing_installer_51_by_hippysmack.jpg?direct&300|}} \\ | {{techtalk:ref:tools:cam_bushing_installer_44_by_hippysmack.jpg?direct&300|}} {{techtalk:ref:tools:cam_bushing_installer_51_by_hippysmack.jpg?direct&300|}} \\ | ||
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| ===== Cam Bushing Reamers ===== | ===== Cam Bushing Reamers ===== | ||
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