Difference between revisions of "PVD 5.5" Fork Hardtail R2"
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| + | This bike is being built to correct problems with [[PVD 5.5" Fork Hardtail]], the geometry of that bike was failed. Some mistakes were avoidable, some were not. Lesson learned. | ||
| + | |||
===Revised Geometry=== | ===Revised Geometry=== | ||
[[Image:Pete's-26-inch-R2.gif]]<br> | [[Image:Pete's-26-inch-R2.gif]]<br> | ||
* Slacked head angle to 69 degrees from 71 degrees. | * Slacked head angle to 69 degrees from 71 degrees. | ||
| − | * Increased BB height to 12. | + | * Increased BB height to 12.50" from 11.75". |
* Lengthened head tube to 5.750" from 5.5". | * Lengthened head tube to 5.750" from 5.5". | ||
* Rear tire clearance reduced to 75mm from 85mm. | * Rear tire clearance reduced to 75mm from 85mm. | ||
| + | * Changed seat stay joint location. | ||
===Revised Tubeset=== | ===Revised Tubeset=== | ||
| Line 11: | Line 14: | ||
*Down Tube - Columbus ZONA 35mm X 670mm 7/5/7 $27.65 | *Down Tube - Columbus ZONA 35mm X 670mm 7/5/7 $27.65 | ||
*Top Tube - Columbus GENIUS 28.6 X 600mm 7/4/7 $34.67 | *Top Tube - Columbus GENIUS 28.6 X 600mm 7/4/7 $34.67 | ||
| − | *Seat Tube - See Below | + | *Seat Tube - NOVA CrMo EXTERNALY BUTTED SEAT TUBE 28.6 x 0.9/0.6/1.2 x 460mm $13.80. See Below |
*Chain Stays - NOVA Cr-Mo 22MM Round-Oval-Round, 420mm Straight (PVD bend) $15.70 | *Chain Stays - NOVA Cr-Mo 22MM Round-Oval-Round, 420mm Straight (PVD bend) $15.70 | ||
*Seat Stays - DEDACCIAI 12.5 16mm X 560mm x 0.6mm Single Taper $18.71 <br><br> | *Seat Stays - DEDACCIAI 12.5 16mm X 560mm x 0.6mm Single Taper $18.71 <br><br> | ||
| Line 24: | Line 27: | ||
===The Seat Tube=== | ===The Seat Tube=== | ||
| − | I have been stuggling with seat tube issues on my second and third build. The tubes are warping quite a bit and reaming has been hell for a variety of reasons. | + | I have been stuggling with seat tube issues on my second and third build. The tubes are warping quite a bit and reaming has been hell for a variety of reasons. Mainly, I have been using some top tubes instead of seat tubes trying to keep weight down and I have been welding without a heat sink in the seat tube. |
| + | |||
| + | I had hoped to rectify this by constructing a tube from NOVA Cr-Mo OS Road Down Tube 31.7 X 650mm X 8/5/8 ($15.00) Welded to a 1.125" OD, 27.2 mm ID Insert. While this was just a few grams lighter than the final tube, it also threw an estetic for the frame. It just looked out of place big. I may move to 1.250 seat tubes in the future, but for now I am keeping things minimal. | ||
| + | |||
| + | I decided to go to a NOVA CrMo EXTERNALY BUTTED SEAT TUBE 28.6 x 0.9/0.6/1.2 x 460mm ($13.80). It's a very solid tube and is almost the same weight as the fabricated one. It won't be as stiff, but that may not be what's needed at this point. Once the geometry is truly dialed, then I can work on flex a bit more. I just don't think it's a problem right now. | ||
| + | |||
| + | I also made a seat tube heat sink and got some better quality reamers. This helped immensly. | ||
| + | |||
| + | ===Welded Up=== | ||
| + | |||
| + | [[Image:Pvd-5-5-hardtail-r2-1.jpg]]<br> | ||
| + | |||
| + | ===Paint=== | ||
| + | Again with cheap powdercoating. | ||
| + | RAL 3005 Wine Red or RAL 5002 Ultramarine Blue. | ||
| + | |||
| + | The bike will be painted with Krylon Satin Black during test riding. | ||
| + | |||
| + | |||
| + | ===Complete Bike=== | ||
| + | |||
| + | 26.50 lbs. fully kitted for hardcore trail riding. | ||
| + | |||
| + | [[Image:Pvd-5-5-hardtail-r2-2.jpg]]<br><br> | ||
| + | [[Image:Pvd-5-5-hardtail-r2-3.jpg]]<br><br> | ||
| + | [[Image:Pvd-5-5-hardtail-r2-4.jpg]]<br><br> | ||
| + | [[Image:Pvd-5-5-hardtail-r2-5.jpg]]<br><br> | ||
| + | [[Image:Pvd-5-5-hardtail-r2-6.jpg]]<br><br> | ||
| + | [[Image:Pvd-5-5-hardtail-r2-7.jpg]]<br><br> | ||
| + | |||
| + | ===Ride Quality=== | ||
| + | |||
| + | This bike works better than any all mountain hardtail that I have ridden. It is super solid on decents and in technical sections. It climbs well enough. A slightly lower bottom bracket could help both aspects quite a bit. I feel like 12.500" may be slightly high and that 12.375" or 12.250" may have worked just as well. | ||
| + | ===The Gift=== | ||
| + | This frame will be painted RAL 2009 Traffic Orange or RAL 2004 Pure Orange, built up well and given to my old friend Ram. I used some new parts and some old parts. It will be a very solid bike. | ||
| − | I | + | He did almost all of my tatoos for me as gifts and I have owed him for quite a while. |
| − | + | [[Image:Pvd-26r2-1.jpg]]<br><br> | |
| + | [[Image:Pvd-26r2-2.jpg]]<br><br> | ||
| + | [[Image:Pvd-26r2-3.jpg]]<br><br> | ||
| + | [[Image:Pvd-26r2-4.jpg]]<br><br> | ||
| + | [[Image:Pvd-26r2-5.jpg]]<br><br> | ||
| + | [[Image:Pvd-26r2-6.jpg]]<br><br> | ||
| − | |||
[[category:Bicycle]] | [[category:Bicycle]] | ||
[[category:Frame Building]] | [[category:Frame Building]] | ||
Latest revision as of 03:23, 22 January 2008
This bike is being built to correct problems with PVD 5.5" Fork Hardtail, the geometry of that bike was failed. Some mistakes were avoidable, some were not. Lesson learned.
Contents
Revised Geometry
- Slacked head angle to 69 degrees from 71 degrees.
- Increased BB height to 12.50" from 11.75".
- Lengthened head tube to 5.750" from 5.5".
- Rear tire clearance reduced to 75mm from 85mm.
- Changed seat stay joint location.
Revised Tubeset
- Down Tube - Columbus ZONA 35mm X 670mm 7/5/7 $27.65
- Top Tube - Columbus GENIUS 28.6 X 600mm 7/4/7 $34.67
- Seat Tube - NOVA CrMo EXTERNALY BUTTED SEAT TUBE 28.6 x 0.9/0.6/1.2 x 460mm $13.80. See Below
- Chain Stays - NOVA Cr-Mo 22MM Round-Oval-Round, 420mm Straight (PVD bend) $15.70
- Seat Stays - DEDACCIAI 12.5 16mm X 560mm x 0.6mm Single Taper $18.71
- Independent Fabrications Dropouts (PVD Designed)
- Paragon 1.5" BB Shell
- Pacenti SS StampedHydo Stops:Bikelugs.com
- PVD Integrated IS Head Tube
- 27.2 Seat post
The Seat Tube
I have been stuggling with seat tube issues on my second and third build. The tubes are warping quite a bit and reaming has been hell for a variety of reasons. Mainly, I have been using some top tubes instead of seat tubes trying to keep weight down and I have been welding without a heat sink in the seat tube.
I had hoped to rectify this by constructing a tube from NOVA Cr-Mo OS Road Down Tube 31.7 X 650mm X 8/5/8 ($15.00) Welded to a 1.125" OD, 27.2 mm ID Insert. While this was just a few grams lighter than the final tube, it also threw an estetic for the frame. It just looked out of place big. I may move to 1.250 seat tubes in the future, but for now I am keeping things minimal.
I decided to go to a NOVA CrMo EXTERNALY BUTTED SEAT TUBE 28.6 x 0.9/0.6/1.2 x 460mm ($13.80). It's a very solid tube and is almost the same weight as the fabricated one. It won't be as stiff, but that may not be what's needed at this point. Once the geometry is truly dialed, then I can work on flex a bit more. I just don't think it's a problem right now.
I also made a seat tube heat sink and got some better quality reamers. This helped immensly.
Welded Up
Paint
Again with cheap powdercoating. RAL 3005 Wine Red or RAL 5002 Ultramarine Blue.
The bike will be painted with Krylon Satin Black during test riding.
Complete Bike
26.50 lbs. fully kitted for hardcore trail riding.
Ride Quality
This bike works better than any all mountain hardtail that I have ridden. It is super solid on decents and in technical sections. It climbs well enough. A slightly lower bottom bracket could help both aspects quite a bit. I feel like 12.500" may be slightly high and that 12.375" or 12.250" may have worked just as well.
The Gift
This frame will be painted RAL 2009 Traffic Orange or RAL 2004 Pure Orange, built up well and given to my old friend Ram. I used some new parts and some old parts. It will be a very solid bike.
He did almost all of my tatoos for me as gifts and I have owed him for quite a while.
