100K on the Dahon Super Comp Folding Bike

The best way to test a bike is to ride it for a long time and a long distance.

Small niggles and annoyances are easily overlooked on bicycles that are seldom used, or only used for short commutes.

There’s precious little time to determine just how well things work as the ride is over before any poor design elements of the bike start to rear their ugly heads.

Longer rides are a true test of just how well all the parts work. After a few hours in the saddle, as your body starts to become tired and your muscles start to ache, every little creak, every little part that is slightly out of place and every uncomfortable element become painfully obvious and a constant hinderence to riding performance.

This is when the real test begins.

I recently took the Dahon Super Comp for a 100K ride to test these very elements.

And this is what I found.

I’ll start with the good stuff, then move onto my dislikes.

Overall solid build

The whole build is nice. There is nothing out of place, the only small consistent noise is the rear fender, which will probably get fixed. I’m still concerned when I hit bumps or need to go off sidewalks since I’ve read the big warning sticker warning against off-road use and not riders over 105kg, a weight that I am too close to for my own liking.

Still haven’t tried folding much, but that’s another post in itself.

Relaxed riding position

This is the most upright position I’ve ridden in. The handlebar is actually about 1cm higher than the saddle. The reach from seat to handlebar is also very short, approximately 6-8cm shorter than my regular ride.

This certainly came through with much less pressure on my arms throughout. The pain I sometimes start to feel from my palms did not happen during the ride. This could also be, in part, due to the nice comfy grips.

Comfy grips

I’ve eyed these new “ergonomic” grips for a while and wondered if they really work well. The ones on this bike are fat, softish and have the ergonomic bump facing the rider. The bump is supposed to support the ball of your hand so your wrists don’t rest at an extreme angle.

These grips tend to slip while riding, meaning that they start to rotate backwards slowly. This would be eliminated by a set that have fasteners at the ends.

Comfy seat

Maybe I’ve been riding on the vicious Selle seat for too long, but this seat felt very comfy. It was comfortable throughout the ride.

Front shifting very heavy

No matter how much I try to adjust them I can only get a decent match on the setup. The match of the three speed shifter with a two-ring crankset is not good. My other bikes has not needed the gears adjusted in over two years and works precisely every time.

The upside is that on flats there was almost no need to change chainrings.

But, the downshift is too much lighter than the upshift. Although the upshift is heavy, just a small nudge on the shifter could push it down to the smaller cog. I don’t expect the downshift to be tougher, I expect the upshift to be better.

Poor water bottle position

Bad cage design aside, getting my Zefal Magnum bottle in and out was a bit of a squeeze. The top of the bottle hits the stem.

I had to use a slightly sideways motion to slip the first part into the cage, then push in as normal.

Stupid brake levers

There are times when developments are made for no reason, and at other times it seems like products are deliberately downgraded to be crappy.

These levers feel like that.

The braking action is fine and the barrel adjustment works as expected. But the position of the fastening screw is ridiculous.

On longer rides it is necessary to move your hands around on the handlebar to give you hands a break. Rather than the usual position for the screw, down and out of the way, it has been positioned in the exact position where it will press directly into the palm of my hands when I rest my hands there. It is still possible to put your hands there, but it’s very awkward and I had to twist my wrists in a slightly strange position for that.

Disintegrating rubber handlebar guides

In order to assist with the disassembly and reassembly of the bike, the handlebar has two rubber stoppers to indicate where the center of the bar is. This helps when putting the handlebar back on the stem as the stop mark the right position.

However, after a few rides the rubber has started to deteriorate, so if you rub your hands on them you’ll get black marks on your hands.

This has little bearing on riding, but is a concern for commuters who are riding in their smart clothes. Last thing they need is to get black marks on their clothes.

Rattling rear fender

The rear fender rattles a bit. This got progressively worse throughout my ride.

I narrowed this down to the clip that fastens between the seatstays. It might just need a bit of crimping, but after that is sorted out it should be a very quiet ride indeed.

Conclusion

My test ride was a bit faster than I’d intended, simply due to time constraints. At a slightly slower speed this bike would probably be fine for over 150km. And as I’ve stated before, that’s even easier if the bike fits you.

The feel of the bike is good, the ride is smooth and the brake lever clamp was the only persistent niggle throughout.

Overall I’m pretty happy with it.

Dahon In The Morning

The morning sunlight can make anything look good and shiny.

On my way back home along the riverside path, the morning sun was shining down, piercing through the slight chill in the air.

Here’s a few shots I took of the Dahon. I had been waiting for good, strong sunlight and I got it.

Dahon P8

Dahon P8

Dahon P8

IMAG0134

Dahon P8

Dahon P8

Dahon P8

Yep, that’s me below. Not a shadow panda, but I’ll get around to one of those another day.

Dahon P8

My First Impressions of the Dahon Speed Comp

Well over the weekend I managed to get hold of my first real folding bike. The impression so far has been good, but many of my concerns about these small bikes are still there.

My only experience with folding bikes in the past was a sub-NTD2000 ($60) bike which was kinda fun, but so flexy and small that it was no good for any distance further than the end of the block. That gave me the impression that they’re all like that.

I was wrong. Here’s why.

First Impression

The first thing I noticed is that the bike is pretty light, with everything smaller than a normal bike it ends up being on the light side. It’s not as light as a well-specced road bike, but for a small frame made from 4130 chromoly and a seatpost to match, there is a good balance.

I was going to talk about body position and setup on such a small bike, but will save that for a later post.

All that I need to say for now is that for commuting it is a comfy position. I’ve set the handlebars to the same height as the saddle, which is a little more relaxed than my main bike.

Overview

The bike features the following bits and pieces:

  • folding frame (made of Chromoly 4130)
  • foldable pedals
  • double chainring (39/56)
  • eight speed rear cassette (with MTB ratio)
  • grip shift (three speed front shifter for only two chainrings? odd.)
  • 16″ wheels
  • front and rear fenders
  • straight-pull brakes
  • dia-compe levers
  • ergonomic grips
  • curvy downhill-style handlebars (with less width)
  • massive, long seatpost
  • saddle with beam
  • rear rack
  • front/rear reflectors

Gearing

With two chainrings up front and an 8-speed MTB cassette at the rear, you get 16 gears to choose from. Plenty for city riding and commuting. These give a lot of range for climbing some smallish hills and moving along at cruising pace of up to 40km/h.

But I have a gripe. Of course I do.

Through the city I usually maintain a 20-25km/h pace, which is a balance between not going too slowly and not breaking into a torrential downpour of sweat. At this speed I am firmly in the bigger chainring and shifting amongst the middle cogs at the back.

But the mountain bike cassette has too much range. The lowest combination on this bike would be suitable climbing very steep hills, and I mean spinning the cranks while going at 5km/h sort of hills.

Just not necessary.

I’d rather have a road cassette with much closer gears for a lot of variety in the 13-28km/h range. The gaps between gears at the moment are just a bit too big.

With that said, the gearing all works as advertised. The front shifting is very stiff and takes a heavy twist to get to the big chainring. The rear shifting is smooth and precise.

Handling

There is inherently less stability when using smaller wheels. That’s one of those scientific things that teams of people in lab coats have spent years analyzing and found to be true.

Larger wheels roll better, roll over bumps better, give slightly better power output and are more stable at speed. Smaller wheels are lighter and more maneuverable.

I was actually expecting the steering and handling to be worse than it turned out to be.

My unscientific test (I should get a lab coat for authority) of stability is riding hands free. That balancing turned out to be very difficult, but doable. On an MTB or road bike you can keep riding without hands until you run out of road or trail. The effort to stay upright was almost not worth it as the constant counter balancing was very tiring. It is still doable however.

It should also be noted that one side effect of the small wheels is that although the overall size can okay after adjustment you are still perched very high the wheel hubs, which might be a contributing factor in the lowered stability. But that is inherent in the design, so I can’t really fault it for that.

Bumps are not fun and the super long stem and seatpost amplify the effect of stutter bumps on roads. Even at a measly 25km/h I felt something would break or I’d lose control. The leverage makes those bumps very much bigger and I’d warn you to ride them carefully, something akin to the lightweight riding style for cross-country mountain biking would do fine.

Braking

Well, I stopped. Good enough?

Not quite. The little wheels are not perfectly round which is not unusual for many wheels. They take a pounding over time, they’re not built quite right and they just end up slightly unround or not straight.

Unfortunately the same leverage that comes through when hitting bumps also comes through when braking. Just a small imperfection in the rims makes the braking very stuttery. This is mostly solved with a good wheel truing. If you can do that yourself, great, if not, it might be worth having a decent wheelbuilder tension the spokes correctly and work out any slight imperfections in the wheels before putting the bike into heavy use.

Having become accustomed to the feel and power of disk brakes, these do feel a little less powerful, but great for the slower speeds the bike is intended for.

Folding

I still haven’t figured it out.

I tried without the manual and was a little confused. “It’s not really that small,” was my first thought.

Well, as it turns out I’ve only had to fold it twice so far. Claimed folding time is less than two minutes.

I still have a soft spot for the Strida folding bike simply because of its super foldability. This doesn’t fold up as easily as the Strida’s 15 seconds, nor as small, but does give a range of gears that the Strida doesn’t.

Comfort

The ergonomic grips were good on my hands, giving support where needed.

The saddle is soft enough and well designed. Softer than a race seat, but not a big cushion. I’d say it’s a racing-shaped seat with cushion-like padding. Comfortable after and hour of riding.

The riding position is relaxed. If it doesn’t feel relaxed, get your local bike shop to help you out with that.

Who is this bike for?

Considering the makeup of the components and the price and quality of the bike, it would be ideal for a regular commuter who covers up to 10km on their daily commute.

It’s not a cheap bike, which puts it out of the bargain bike range, but it won’t be suitable for longer riding like touring. Big bikes are always more comfortable for longer rides, but if regular folding and transporting on public transport is required, this bike would do the trick and do it comfortably.