Although no problem should be anticipated using the beaufort converter with the Kaigelu 316 pens when the original barrel finial is in place, Gary recently shared his experience of using the Beaufort ink converter in his Kaigelu pen that had already had the original brass barrel finial replaced with a plastic one, as suggested by Richard in his thread found here ( http://www.fountainp...-barrel-finial/)
The truth is that I have not done the barrel finial replacement myself to decrease the weight of my Kaigelu. However, in looking into this procedure details, I formed the impression that the barrel end of the original Kaigelu finial has an internal recess, in other words is hollowed inside up to several millimeters, possibly to accommodate the converter knob. This is confirmed also by the CAD drawing of the original Kaigelu finial submitted by Richard here ( http://http://www.fo...u-316-charcoal/ ) which shows a recess of 16 mm in length and 6 mm in diameter, presumably to accommodate part of the knob of the converter. This was also shown in the clinical photographs of the removed brass finial posted by Flounder and Richard found here ( http://www.fountainp...ssembly-photos/ ) .
The Beaufort converter is slightly longer than the Kaigelu converter by about 5 millimeters, and similarly it's turning knob is wider in diameter by 0.25mm, but this difference is within tolerance and can be accommodated by the internal dimensions of the pen's barrel and the hollow feature of the original Kaigelu finial.
Towards this end, I am presenting a series of component measurements and pictures below. In summary:
- Internal Length of the Kaigelu barrel with the original finial = 77mm, measured in both my 2 Kaigelu 316s (includes recess mentioned above)
- Length of the original Kaigelu ink converter = 69 mm
- Length of Beaufort Converter = 74 mm
- Difference in length between the two ink converters = 5 mm
- Length of the recess of original barrel finial = 16 mm (as suggested by Richard drawing in http://www.fountainp...u-316-charcoal/ )
- Kaigelu converter knob diameter = 5.45 mm
- Beaufort converter knob diameter = 5.75 mm
- Internal diameter for original barrel finial = 6 mm (as suggested by Richard drawing in http://www.fountainp...u-316-charcoal/ )
No problems are anticipated using the Beaufort converter with the pen's original barrel finial. However, for pen owners that have had the finials replaced, there appears to be, as Gary suggested, a slight incompatibility in the sizes of the components involved, that in my mind can be solved as follows:
- If possible, the replacement finial needs to be removed and the hollow feature of the finial accentuated; attention should be paid not to decrease the structural strength of the new plastic finial. Perhaps Richard should be notified so he includes this wider feature in his new, much anticipated, finials. Or
- Shortening of the turning knob of the replacement converter by a few millimeters (around 5 mm should be adequate) is required, as Gary suggested. This could easily be done with a disk in a dremel, and final polish should be done so not to impede the converter esthetics. The functionality of the converter should not be inhibited by this slight modification.
Gary, thanks for sharing your experience with us. I hope this will be useful for people who want to attempt the Kaigelu nib replacement procedure in their pen and have already had their original brass barrel finials replaced with lighter plastic ones.
In conclusion, although slight modifications may be needed for pens with replaced barrel finials, no size incompatibility whatsoever is anticipated with pens that still have their original brass finials in place. Other forum members are welcome to post their experiences here too.
Fig 1. Difference in length of original Kaigelu (top) Vs Beaufort (bottom) ink converter.
Fig 2. Length of the original Kaigelu ink converter.
Fig 3. Length of the Beaufort ink converter.
Fig 4. Internal length of Kaigelu barrel vis-a-vis the original Kaigelu converter.
Fig 5. Internal length of Kaigelu barrel vis-a-vis the beaufort converter. No size compatibility problems between components is anticipated when the original Kaigelu barrel cap has not been replaced.
1. Kaigelu 316 Acrylic Barrel Finial by richardandtracy ( http://www.fountainp...-barrel-finial/ )
2. Kaigelu 316 Charcoal by richardandtracy ( http://http://www.fo...u-316-charcoal/ )
3. Kaigelu 316 Accidental Disassembly Photos by Flounder ( http://http://www.fo...ssembly-photos/ )
Edited by Frank66, 28 March 2016 - 06:05.