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Crust Bikes

Clydesdale cargo fork.

$185.00

 

Back in stock around May of 2017.

The Crust Cargo Conversion Fork Or the "1,1/8 Clydesdale Fork" as it has been dubbed, due to its workhorse capabilities, gets you on a cargo bike easily and cheaply, because it is made to replace the standard fork on most touring, cross, and old-school non-suspension-corrected rigid mountain bikes. It looks weird, but the basic plan behind it is that with a smaller wheel you can load up more payload.  The lower center-of-gravity along with properly designed rake makes it handle a whole lot better with a load than any standard fork with a porteur rack.
This design pre-dates Crust. The first version, hacked together with a borrowed torch and some worn-out files, worked surprisingly well. Since then it’s gone through a few evolutions including a leap toward disc brakes. It has a plethora of braze-ons so you can easily attach a solid deck, some lights, and some tie-downs.
You’ll need a 20” (406mm B.S.D.) disc brake compatible wheel with a 9mm axle. In our experience 32 spoke wheels, with cheap double wall box section rims, have been super sturdy. More spokes can’t hurt, less probably isn’t a good idea.
Lets talk numbers – There are two main measurements which will determine if this is going to work for you:  The Head Tube Angle, and the Axle-Crown Length. To be most versatile, The Cargo Fork was designed to replace a fork with an axle-crown measurement of 400mm or 15 ¾”, which is really common measurement, which you’ll find on a lot of touring, cyclocross, and stout steel old-school rigid mountain bike frames… that’s basically most of the sturdy frames you would be thinking about converting into a cargo truck. LHT’s, Cross Checks, old Stump Jumpers… even our own Evasion mates well with the Cargo Conversion Fork.  It is true, the Evasion axle-crown measurement is 408mm, but it still makes for a fine ride.
The Cargo Fork was designed with a 72 degree head tube angle in mind. If your frame has a 72 degree head tube angle, and a standard fork axle-crown measurement of 400mm or 15 ¾”, then your bike, with The Cargo fork will still have a 72 degree head tube angle and the platform will be level.
If you have the prescribed fork length but your head tube angle is different? Then your head tube angle will remain as before, but the platform will be out of level by whatever that difference in those angles is. Not a big deal.
Ok, so what if your axle-crown measurement is much different from 400mm or 15 ¾”? Then your head tube angle, seat tube angle, and bottom bracket height are going to change. Generally, frame angles will all change by about 1 degree per 10mm of axle-crown length difference, and your bottom bracket height will change by about half of that difference. If your original fork is longer than 400mm, then the resultant angles with The Cargo Fork installed will be steeper and the bottom bracket will be lower. If your original fork is shorter than 400mm, then the resultant angles with The Cargo Fork installed will be slacker and the bottom bracket will be higher.

Velocity wheel specs are;

Aeroheat Black 20'' 
ATB Hub Front - 32h Black
Front Skewer - Black 100mm Internal Cam
Spoke - Black 14g - DT Champion
DT Nipple, brass silver 2.0

Back in stock around May of 2017.

 

 


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