kona explosif or not?

[one-eyed_jim]

Re: Re:

The correct term is 'ribbed' tubing, not fluted.

For what it's worth, Tange say "ribbed" or "ditched"!

http://www.equusbicycle.com/bike/tange/tange.htm

Kona call it "splined"!

http://www.retrobike.co.uk/gallery2/v/M ... 6.jpg.html

 

[FluffyChicken]

Re: Re:

The correct term is 'ribbed' tubing, not fluted.

For what it's worth, Tange say "ribbed" or "ditched"!

http://www.equusbicycle.com/bike/tange/tange.htm

Kona call it "splined"!

http://www.retrobike.co.uk/gallery2/v/M ... 6.jpg.html

Splined is just wrong? That's to do with mating surfaces, e.g. cogs and cranks and things? I don't* think kona splined the other tube holes to weld them into.

(*Corrected do to don't)

 

[FluffyChicken]

To clarify (and perhaps somebody else will spot differences that have escaped me):

'92 Explosif with external (brazed-on) rack mounts:

viewtopic.php?f=2&t=253519

'92 Explosif with internal (brazed-in) rack mounts:

viewtopic.php?t=101221

'93 Kilauea:

viewtopic.php?t=218013

I think the bulge butt on the explosif is shorter, but this is a small frame so unsure. Or I could be imagining that

The frame dimensions should be different between the two as 1993 is when they switched to the newer setup and started measuring from the centre of the bb rather than the top edge.

But I don't know the lengths of the headtube to measured frame sizes for the small frames.

 

[one-eyed_jim]

Re: Re:

Splined is just wrong? That's to do with mating surfaces, e.g. cogs and cranks and things?

Tell that to Kona, not me!

I do think kona splined the other tube holes to weld them into.

I don't. I think they mitred the ridged, or fluted, or ribbed tubes to weld them onto the plain head- and seat tubes and bottom bracket shell.

 

[one-eyed_jim]

The frame dimensions should be different between the two as 1993 is when they switched to the newer setup and started measuring from the centre of the bb rather than the top edge.

See, this is where we need Anthony.

Didn't the measurement shift occur in '92? If you compare the '92 geometry chart with the '91, the '92 top tubes are all shorter for a given frame size than in '91. I'd assumed that was because the measurement system changed. The effective top tube lengths get longer again in '94 when the geometries were suspension-compensated.

[

geometry charts:

1991: http://www.retrobike.co.uk/gallery2/v/M ... 4.jpg.html

1992: http://www.retrobike.co.uk/gallery2/v/M ... 8.jpg.html

1993: http://www.retrobike.co.uk/gallery2/v/M ... 5.jpg.html

1994: http://www.retrobike.co.uk/gallery2/v/M ... 2.jpg.html

]

 

[FluffyChicken]

The frame dimensions should be different between the two as 1993 is when they switched to the newer setup and started measuring from the centre of the bb rather than the top edge.

See, this is where we need Anthony.

Didn't the measurement shift occur in '92? If you compare the '92 geometry chart with the '91, the '92 top tubes are all shorter for a given frame size than in '91. I'd assumed that was because the measurement system changed. The effective top tube lengths get longer again in '94 when the geometries were suspension-compensated.

[

geometry charts:

1991: http://www.retrobike.co.uk/gallery2/v/M ... 4.jpg.html

1992: http://www.retrobike.co.uk/gallery2/v/M ... 8.jpg.html

1993: http://www.retrobike.co.uk/gallery2/v/M ... 5.jpg.html

1994: http://www.retrobike.co.uk/gallery2/v/M ... 2.jpg.html

]

I'm sure Anthony told me the measurement changed in 93 year (an hence I put in the retro wiki)
Yep could do with him now

Weight will tell you though, the killi is heavier than an explosif. Quite a bit (half pound or so iir from mine) I was quite surprised how heavy the frame actually was.
I also think the 92 explosif with the newer rack mounts also use the same Fxxxxxxx numbering.



(I was asking a question about the splined word usage an it should have read don't not do, oops. Getting fed up with androids autocorrect correcting things it shouldn't, typing bike names is getting annoying).

 

[one-eyed_jim]

(I was asking a question about the splined word usage an it should have read don't not do, oops.

Ah!

Merriam-Webster says:

SPLINE (n)

2 : a key that is fixed to one of two connected mechanical parts and fits into a keyway in the other; also : a keyway for such a key

and my Shorter Oxford has:

2 (techn) a rectangular key fitting into grooves in a shaft and wheel or other attachment so as to allow longitudinal movement of the latter (1864)

Still, meanings can drift at an alarming rate. I liked The Bear's point about ribs being circumferential, but then again, a ribbed sweater's ribs are vertical, i.e. axial.

 

[The Bear]

Still, meanings can drift at an alarming rate. I liked The Bear's point about ribs being circumferential.....

I'll go with whatever the manufacturer wants to call it for a given application.

As a general rule though I'm sticking with circumferential. Surely they were named thus after their similarity with the bone of the same name.

Google "fluted tubes" and then "ribbed tubes" for the majority vote!!

It's interesting to hear about the differences of similar era Konas though. I've a soft spot for Explosifs after having one back in '94 and this is whetting my appetite for another

 

[FluffyChicken]

Re:

Do it :-D

 

[mark-bcn]

Re:

Finally all unmounted
Seems a 17 inch frame