Odyssey BMX » volcano bolts

3/8 Axle for the Ratchet Hub

Francis — Tue, 17 Nov 2009 18:20:45 +0000

You may have noticed on Adam Banton’s last bike check that he has a 3/8″ axle listed for his Ratchet hub and JC has one on his bike too. These aluminum axle kits are available now and come with spacers which helps fit the hub to most 14mm dropouts. If you’re looking to shave some weight or maybe even just clean up the look of your bike with our Volcano Bolts, this kit would be a great upgrade for your Ratchet. Hit up the mail-orders or your local bike shop to get your bike on one.

Show Bike: Fire Engine Red

Francis — Fri, 25 Sep 2009 16:53:41 +0000

We have a couple show bikes lingering around our booth and one of them is completely decked out in the Fire Engine Red parts kit we posted a couple days ago. Aside from having the full kit, this bike also has our prototype seat post, which works for both pivotal and railed seats.

G-Sport Volcano Bolts

Francis — Thu, 03 Sep 2009 22:44:28 +0000

How can it take so long to make a bolt? If we’d been happy for the production ones to be machined from bar stock like the prototypes (and to be similarly expensive) then it would have been a lot quicker, but instead we decided to invest the time and effort to make a forging tool to give the part a better grain structure and to get the price down. So here they finally are.

G-Sport Volcano Bolts:
» 3/8″ diameter
» 24 threads per inch
» 6mm allen key socket
» 24mm diameter “volcano” head.
» Recommended tightening torque, 35N-m.
» Maximum tightening torque, 50N-m.
» Minimum tightening torque, 20N-m.

The shank is one inch, or 25.4mm long, and the top 5mm are left unthreaded to optimize the fit in the dropout. This design will still fit a 3mm dropout thickness with the Marmoset Hub because the axle threads are inset 3mm to help locate the bolt and minimize the risk of cross-threading. The head is 7.5mm tall, giving the bolt a total overall length of 33mm.

The weight is 25.8g or 0.9oz each, compared to 35.6g or 1.25oz for the regular 35mm long shank, 17mm hex-head Marmoset bolt. So a pair will save you less than an ounce (which unsurprisingly, isn’t what they are intended for).

To be clear, these bolts are NOT designed for use with pegs. Check the condition (and size) of your Allen key before tightening. Rounded keys will damage the hex, and eventually removal will become difficult. Do not force damaged bolts into the hub axles. You will damage the axle threads and/or helicoil.

Volcano Bolts are compatible with many female axle hubs, here’s a brief list:
» G-Sport Marmoset – YES
» G-Sport Monkey – YES
» G-Sport Fat Shaft MkII – YES
» G-Sport Fat Shaft (1995 onwards) – YES
» Odyssey Vandero 2 – YES
» Demolition Mary-Kate front – YES
» Shadow Raptor Front – YES
» Colony Clone Front – YES

And hubs they WON’T fit:
» G-Sport Fat Shaft (1994 -1995) – NO (M10x1.0)
» Profile Mini Front – NO (3/8x16T)
» Madera Pilot Front – NO (3/8x16tpi)
» Fly Bikes Front – NO (M10x1.0)
» Eclat Teck front – NO (M10x1.0)
» WTP Supreme Front – NO (M10x1.0)

Volcano Bolts!!

George — Fri, 08 Dec 2006 01:05:37 +0000

Another three post frenzy… you lucky lucky people…
Don’t worry these bolts aren’t really volcanos… or are they?!?!?

No. they arent…

What they are are smooth low profile bolts for the Marmoset and Monkey hubs if you aren’t planning on using pegs.
6mm allen key sockets, slightly shorter than regular bolts to save that all important weight (about half an ounce per bolt) and with a big head to allow use in 14mm dropouts (with a suitable converter).

Sold as singles.

Should be available early in 2007.