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General CBR XX Discussion: General Discussion of the Honda CBR 1100 XX Super Blackbird that does not fit into the other specific forums. | |||||||
Helibars bolt thread size?
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01-16-2007, 3:09 PM
| #1 | ||
 Join Date: Nov 30 2006 Location: Los Angeles, California Bike(s): 1997 CBR-1100XX & Suzuki DR-350SE Posts: 326
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Does anybody know what the diameter and thread size are the bolts of Helibars? (The 2 bolts that tighten each bar) The reason I ask is I'm thinking of installing a GPS using this replacement bolt (it's 1/4" - 20 TPI): Ram Mounting Systems - Products | ||
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01-16-2007, 9:29 PM
| #2 |
| Join Date: Dec 16 2006 Location: S. Fla Bike(s): Too many Posts: 302
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I'm pretty sure the Helibar clamp bolt is 6mm x 1.0 thread pitch. Check to see if a 5mm hex wrench fits to be sure. Some more info. Tap drill size is 5.0 mm for that bolt and thread or 0.196". Tap drill for 1/4-20 UNC is a #6 or 0.204". It would be a simple matter to run a 1/4-20 UNC tap into the tapped portion of the bar. Body clearance for the bolt, which allows you to tighten the clamps up without binding on the bolt shank is recommended at 0.281" for the 1/4-20. It is 0.267 for the metric screw so you might want to open up the clearance hole a bit as well. |
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01-16-2007, 9:32 PM
| #3 |
| Ba-Da-Bing  Join Date: Sep 15 2006 Location: Raleigh, NC Bike(s): 2007 Honda ST1300 Age: 36 Posts: 1,052
Xbox Live! Gamertag: ConqSoft |
You could go this route instead. Works well: CBR1100XX GPS Mount Pictures? |
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