What is the minimum inseam needed to ride the Coker Big One or V2 Unicycle?
- The minimum inseam is around 28 or 30 inches (this is a standing inseam)
What kind of load rating do the unicycles have?
- Our unicycle button tread tire is rated at 32 PSI; however we don’t have a specific load carrying capacity for it. We have had a customer weighing around 300 lbs that was able to hold him, etc. We feel confident that our unicycles/wheels & tires can hold a good amount of weight; however, we cannot give a certain amount of pounds.
Do the unicycle frames come with the brake mounts standard?
- The V2 and the new Big One both use the same brake parts. All of the frames come ready for brake installation, whether the brake kit is ordered with the unicycle or not. The brake bosses and pivots are current international standard details. The Coker brake kit uses genuine Shimano V-brake arms; because of the oversized Coker 36" tire, our unicycles use the longest Shimano arms we could find.
What are the benefits/drawbacks to the two different crank lengths (125mm vs. 150mm)?
- The longer length the pedals, the more leverage you will get. This will make the weight (you) that you are pulling up hill easier than a shorter rotation on a crank. Starting out on hills, I would go with a larger crank such as the 150mm. On the other hand, if you are going to be riding a unicycle on flatter roads, doing tricks, wanted speed etc, short cranks (125mm) would be best.
Are your cranks attached to the spindle via bolts on all your unicycles?
- The V2 and the new Big One both use the same wheel and hub. The special Coker wide hub has a Cr-Mo axle with square tapered ends tapped for bolts.
My cranks keep coming loose. What would you recommend (torque, lbs)?
- Make sure you have the appropriate tools. First, pull the crank arms off and make sure the ends of the axle and the insides of the crank arm tapered holes aren’t chewed up. When the cranks are removed, be sure you put them back on with R on the right side and L on the left side. Other than that, assuming your parts are in good condition, torque the axle bolts to 20 ft-lb.
How easy is it to ride a Coker uphill?
- The best way we have found to ride your uni uphill is to grab the seat and pull yourself into the uni it as you pedal. It might feel somewhat awkward at first, but it gives you stability. Make sure to put your weight down into the saddle either by your body, both hands, or at least one and lean forward. Standing up will only make it harder and your center of gravity won’t be as close to the wheel.
- First, check the torque on the crank arm screws at the axle (it should be about 20 ft lb, and checked after every ride for the first 5 or 6 times). Tighten them again until they settle in. After they do settle in, they should be good for a long time.
- Second, make sure to check the post clamp. The bottom end of the post (that you cut off to fit) should be well chamfered so it's not eating up the inside of the frame's seat tube. If you have the seat post bottomed out on the little cross 'safety' pin in the seat tube, any flexing as you ride might make the post scrape against the pin. Try a bit of grease at the very bottom of the seat post; but make sure not to lube the entire length of the post, as it would reduce the grip on the seat post.
IF the noise problem continues, remove the wheel to check the bearings individually by hand; this is a better indicator than rotating the wheel or the frame, because of the leverage and the mass which can hide some roughness. If you do remove the wheel, be sure to use LocTite on the (4) screws when you put the wheel back in the frame. Don't over tighten the screws; get them snug and let the thread-locker retain them. And, always, check the tension of the spokes.