Thursday, November 20, 2008

Tandem research - the YouTube method

Was having a troll through YouTube in a quiet moment, and discovered that tandems are more popular and weird than I initially thought.

There is the side-by-side tandem


And this one would be good for a laugh, but although it would allow Logan a better view, I'm not sure it would make a difference...


And just when you thought I was going to bring up a triple or quad bike, I found this!

Monday, November 17, 2008

Genius at work (aka midnight rantings of a madman)

A week has past since we returned from the Molesworth Muster… we’ve done absolutely no riding but have begun the process of working out exactly what upgrading will be done and what parts will do the job. Thanks to those of you who have either given me some thoughts on parts, links to parts or the parts themselves. For anyone considering tandem mountain biking as a direct result of reading this blog (or due to some significant head injury reducing your overall mental ability), I thought I might toss together some basic introductory thoughts/tips.. 
Warning 1: I’m blind and have only been tandem mountain biking for about 10 weeks! 
Warning 2: I’m a little closer to clinically insane than may be socially normal! 
Warning 3: I am not married to, sleeping with or aiming to sleep with my Captain. 

Tandem riding, from the Stoker’s prospective, can be exhilarating beyond comprehension or terrifying to the point of cardiac arrest. A thrilling descent at 80 kmph can instantly turn into a multi-week stay in your local hospital fracture unit if the tandem “captain” is inattentive, inexperienced, careless or otherwise stupid. I’ve found that, like monkeys, tandem captains fall into many different categories: ** those who are new and willing to try out tandem riding with a friend, cycling buddy or wife/husband/significant other ** Hot Shot Bikers who take their non-biker significant other on Sunday social rides to the coffee house ** Over-achievers who constantly quest for more speed and/or distance ** And, control-freaks. Note: It is of the utmost importance, for the safety of stokers and other single bike riders, that the latter group of potential captains be kept to a minimum! It should be realized that, despite the commonly believed myth, the tandem is actually controlled from the Stoker position. This fact may take weeks or months(or even years in some cases), for captains, onlookers and other groups to realize but it is essential that this fact be accepted! 

Take-off Procedure Note: No rodeo mounts or dismounts are allowed! 
1. The captain is to straddle the bike, carefully as to not chip the paint with their cleat, and stand firmly with legs spread apart to support the tandem in an upright position. 2. The Stoker will then climb on the back, clip-in one or both pedals, and lift the captain’s preferred starting pedal (which should be the same as the preferred starting pedal of the Stoker, if humanly possible). 3. The captain clips into the preferred starting pedal while firmly holding the bike, and, once ready,lets the stoker know they are ready for “liftoff”. 4. The pair then begin the first pedal stroke, -remembering to lift the foot not on a pedal. 5. The Stoker takes charge of maintaining forward propultion whilst the captain attempts to clip in their second pedal. ***Under no circumstances is the pair to try to clip in until the tandem has reached minimum escape velocity*** Note to the inexperienced captain: If a 40 kg, 10-year old Stoker can power a tandem from the back, your stoker can certainly do this for you, so RELAX! 

Stopping Procedure 
Stopping at Traffic Intersections, etc 1. The captain is to shift to a lower (easier) gear or two, depending on the terrain, then gently stop the vehicle – at which time the pair immediately place one foot firmly on the road. 2. Once ready to go, follow Take-off Procedure and shift back to a higher gear, as appropriate. Note: Captains who lean the bike past the critical angle may immediately receive a verbal warning to keep the bike upright. 

Stopping and Dismounting 
1. The captain is to gently stop the vehicle - immediately the pair should place both feet firmly on the road, spread out to support the tandem in an upright position. Note: Forgetting that you are on a tandem and causing the Stoker to fall off the back because you let the bike tilt too far may result in deafness or other personal physical harm. 
2. Once the Stoker dismounts, the captain may dismount by either lifting one leg carefully over the top tube or lift the leg over the Stoker’s handlebar. Remember, no rodeo dismounts are allowed! 

General Riding Behavior 
The captain is not, under any circumstances, to display reckless, dangerous, harmful or otherwise Stoker-threatening riding behavior. Letting go of the handlebar during a descent and yelling, “Look Ma, no hands” will result in immediate remediation. The properly trained captain is trustworthy, loyal, helpful, friendly, courteous, kind, obedient, cheerful, thrifty, brave, clean, and reverent. 

Captains Oath 
On my honor I will swear, against severe penalties
To do my duty to keep my Stoker safe;
To listen to and obey the Stoker at all times;
To keep myself physically strong,
mentally awake, and to keep the bike upright. 

Paceline Riding with the Tandem and Singles 
Briefly, the tandem(s) must be in front at all times unless there are one or two very strong cooperative “single” riders to help. Single riders are to give the tandem(s) plenty of room and not run them off the road, particularly when descending. Single riders must immediately get out of the way when the tandem announces it is passing on a downhill. Single riders should be patient when climbing hills with tandems, as most tandems do slow down. In a situation where there is a strong headwind, it is easy for single riders to think the paceline is not going fast enough, because they do not have to do any work. However, the tandem at the front is working very hard and if a single rider were in front, the paceline would be much slower. (The single rider will learn this concept on his/her own when he/she breaks out of the paceline and tries to pass the tandem.) 

Descending with the Tandem 
There is no question about the thrill of blowing past all single bikes on a long, banked, descent while riding on a tandem. In fact, the tandem becomes more stable at certain speeds. However, the captain must know the bike’s limitations with respect to braking and handling. Most direct braking control is from the front handlebar brake levers. The distance between the lever and rear brake is at least twice as long as for a single bike, and may lag in response. Tandems, in general, require more time to slow and stop. For long descents where a lot of braking is required, the rims can heat to very high temperatures and cause the tires to blow off the rims. Many tandems are equipped with a rear drum brake or disk brake, which in some instances may be controlled by the Stoker. This allows for auxiliary braking that does not impact the rims and can also relieve the strain on the captain’s hands during the descent. Descent speed and degree of “leaning” depend on the experience and skill of the captain and nerve of the Stoker. If the Stoker makes the command to “slow down”, the captain must comply or risk serious consequences. In emergency situations, the Stoker may employ the “Emergency Braking Procedure”. 

Sudden Flat Tires 
Sudden flat tires on tandems can be extremely serious situations. These are often caused by a “snake bite” pinch after going over a pothole, by riding over a large piece of sharp glass, or(like in our case) due to overheating of the rims. It is imperative that the captain remain calm and steady while attempting to brake, even if it requires riding on the rim. The Stoker should endeavor to stabilize the bike during the stopping process. Once the tandem comes to a stop in the upright position, the Stoker, then the captain, will immediately dismount. The captain is to remain calm and not start swearing while the Stoker assesses the situation. Note: If the bike does not stop in the upright position and the Stoker is thrown off the bike and is lying in the middle of the road, the captain must halt all traffic until the Stoker is safely relocated. 

Off the Saddle Riding 
Off the saddle riding is important to preserve the morale of the Stoker, as tandem riding generally does not allow for as many “butt breaks” as single bike riding. Either the Stoker or the captain may call out “butt break”, the captain then shifts to one or two higher (harder) gears, and then both riders simultaneously stand on the pedals while allowing the tandem to coast. Agreement on the number of pedal strokes prior to standing is generally a good idea; generally one full stroke will suffice. After several seconds, the riders may either sit down and resume pedaling, or pedal while standing. Once seated, the captain should remember to shift back to the lower gear, as appropriate. Off the saddle riding may also be performed during hill climbing. The captain may simply shift to a higher gear, which will signal to the ES that off the saddle riding is to commence. After the agreed-upon full pedal stroke, both riders will stand and continue pedaling. 

Hill Climbing 
Experienced tandem teams that have perfected the technique of “surfing the rollers” will leave most single riders behind. However, as previously mentioned, most tandem teams slow down when climbing long, sustained, hills. It is up to the captain to shift smoothly into the appropriate gear for climbing. Brief “Off the Saddle” periods may be employed, as needed; however, most of the climbing will be done sitting. This is the ideal time for the captain and Stoker to relax and engage in conversation.

Conversation while Riding 
Experienced Stokers, particularly those who are educated and refined, require stimulating conversation on rides. For tandems riding with a group of singles, conversations are usually communal and generally out of control. However, when the Stoker and tandem captain are out on a solo ride, it is up to the captain to participate in a decent conversation. Captains who make totally inappropriate statements such as, “Can’t hear you – too much wind noise” or “Shut up – Can’t you see I’m trying to concentrate” require immediate remediation. Topics may vary depending on the interests of the Stoker and captain. In general, “safe” topics include bike techno talk, weather, scenery, cultural events (music, art, dance, etc.), and gossip about other riders. Unflattering comments about Stoker’s weight or physical appearance, gory details on previous bike crashes, or expressions of general dissatisfaction require immediate remediation. Note: It is expected that the captain, who sits at the front-most position on the tandem and can see things ahead, communicate life-threatening events to theStoker , e.g., “duck for branch”, “bump”, or “brakes are out – jump ship.” In other emergency situations, such as bee stings, animal bites or dismembered Camelbak bite-valves spewing their contents, the captain is to remain calm and quiet until the tandem is brought to a full and complete stop, the Stoker has dismounted, and the bike is placed in a safe and secure location, before uttering any verbal response. 

General Rules (abbreviated list) 
1. Do not crash with the Stoker on the back of the tandem. 
2. Seriously, do not crash with the Stoker on the back. 
3. You’d better not crash with the Stoker on the back ! 
4. To put it another way, keep the tandem in an upright position at all times. 
5. No rodeo mounts or dismounts. 
6. Do not try to pedal during the initial steps in the take off procedure. 
7. Do not clip into the second pedal until the tandem has reached minimum escape velocity. 
8. Do not snag your shorts on the saddle. 
9. Slowly and gently stop the tandem and place feet firmly on the ground. 
10. Do not lean the bike past the Critical Angle. 
11. Do not allow the Stoker to fall of the back of the bike because you let it tilt past the Critical Angle. 
12. Do not chip the paint on the top tube with your cleat. 
13. Do not let go of the handlebar with both hands while riding. 
14. Obey the Stoker at all times. 
15. Be prepared. 
16. Shift before you absolutely need to. 
17. don’t fiddle around with the shift levers. 
18. Do not shift with the wrong lever. 
19. Slow down promptly if the Stoker gives the command. 
20. Let the Stoker yell at singles who violate tandem paceline protocol – you are to remain quiet and in control of the bike. 
21. Do not swear out-loud if a tire goes flat. 
22. Don’t ever make inappropriate comments to the Stoker. You will immediately be “black listed.” 
23. Remember to allow for “butt breaks” to preserve Stoker morale. 
24. Captains are to call out any low hanging branches; ducking without telling the Stoker is subject to severe penalties and loss of captain’s license. 
25. Do not call out stupid, obvious things, such as “shifting”, “braking”, “slowing”, or “standing.” 
26. Brush up on recent cultural and world events before the ride so you can hold up your end of the conversation. 
27. Eat and drink when the Stoker tells you to. And don’t talk back. 
28. Do not lose the tandem when you park it. 

Tuesday, November 11, 2008

physiology; psychology & tandemology

9 weeks of training, very little hill work and plenty of repairs....but we knocked the bastard off!
Since losing my sight ten years ago I've done what can only be described as some damned Crazy things.
From bungy jumping to abseiling, driving a car around a track in a paddock to cutting trees down with a chainsaw, I've gone on doing things that I did as a sighted person with little, or no, consideration for the sheer stupidity involved in doing it as a totally blind person.
I'd not thought that off-road mountain biking might fall into the category of benignly crazy but I can assure you this... it helps if you are a little closer to insane than may be socially normal to get onto a tandem bike (with no suspension) and ride 80km for no reason other than "It sounds like fun!"
So...with enthusiasm abound, insanity aplenty, bike currently mechanically sound and training kind of done I'm sitting behind Chris waiting for the rolling start of the Molesworth Muster.
I have an epiphany ...." Catch the bus back to Hanmer!" ...and then the siren goes!
rollin,rollin ..stoppin! Our first lesson - don't be behind most of the field in a rolling start as the tandem gets momentum much faster than a single does and you'll need to keep stopping!
The first 2km behind us and I'm starting to plan ahead.. wind up Wards Pass, barrel down the other side and go from there...again..traffic changes our/my plans. At the bottom of Ward's Pass we struggle to get into any regular cadence and due to an ever changing pedal speed Chris reconfirms his hatred of hill climbing and we quickly accept that we're not getting up the hill any quicker on the bike than those walking...so we leg it up to the top!
First hill completed..and we're rockin now!
Chris's report of the section from the bottom of Ward's Pass to the 50k mark is how it went...fast!...and then.. squeak, whine, groan..no, not another mechanical failure, that's the sound my hamstring would have been making..if it could make noise!
We're 50k in, things were going well..and my hammy starts to tighten..I grind through it for a bit..thinking that it'll stretch out and the pain will go..but it's a stubborn little bugger and is hell-bent on a rest. So, rest taken, stretches done -a few times, and we continue to grind away...me trying to do my job...but failing.
I want to finish, I need to finish..I'm going to finish ..even if I have to take Chris up on his offer of replacing my dodgy hammy with a cable tie!
So..we keep going..and by the mid way point of Jolly's my hammy has had the rest it needs and I'm starting to feel human again(Well as close to human as I might be typically!)..good timing I guess..the last bit of the climb is the steepest!
roll over the top, hold on for grim death and trust that Chris won't go native at any point on the descent!
After replacing the blown tube, and chewing up some more time, we roll into what I assume to be a simple ending ...well! We'd been told in the race briefing that there was 200m of single track to navigate before rolling into the finish chute..but no one told me that I'd be almost vertically above Chris as he is trying to get the tandem to go around a corner! Again Chris proves that he is crazy and gets the tandem through a section of track that just wasn't meant for the extra length of a tandem and we treddle into the finish and the waiting arms of the nearest funeral director!
I'm kind of gutted by our time, very gutted that my body was the primary cause for our much slower time ..but am rapt that we've finished a bloody good event in one piece, without breaking anything on the bike(the tube don't count) and am already thinking about what we could do next...the Moa?, The Rainbow Rage?....Around Tekapo?
We've already decided that we like this challenge enough to keep doing events so we'll be getting the bike into the guys at PushBikes Papanui for some TLC and some upgrades (budget allowing) and then it's some proper training for the next event!

People continue to ask why? how? and are you joking? when I say that I'm doing off-road tandem mountain biking.
One of the most frequently asked questions is what is the most important thing needed when riding a tandem?..(I assume they mean other than a tandem bike !!)
I, like Chris, believe that it is much easier for me to sit there in ignorant bliss...not actually seeing how close to significant injury we may have come; but this ignorant bliss is only achieved with one thing...trust!
Over the 9 weeks leading up to the Muster; I've felt the close calls, perceived the close trees and clench various muscles as the bike has begun to slide from beneath us...and once I've breathed again, wiggled sufficiently to remove the seat from my lower intestine and generally concluded that we were close to death but survived, trust in the ability of the Nutbar in front of me has grown...and it is this trust that I feel is the most vital component of successful tandem mountain biking 
** Trust only slightly pipped Cash as the most important thing!**

What was upgraded/repaired/replaced on the bike leading up to the Muster?
  1. Two rear chains
  2. Two rear cassettes
  3. One seatpost (suspension too rigid) -- I need to get a good suspension seat post..ideas?
  4. One crank
  5. 3 Front chainrings
  6. A small crack in the lower frame
  7. Cables for brakes and gears
  8. Climbing bars

Things still to be upgraded/replaced
  1. Suspension forks(High quality ones to handle the extra weight of the tandem)
  2. Disc brakes - 8" at least I'm told
  3. the levers, tubing and associated guff for hydraulic discs
  4. Gear shifters
  5. Front and rear derailleur
  6. Suspension seatpost for me!!
  7. Stronger wheelset(38 spoke minimum)
  8. some kind of helmet mounted video system -so I don't have to hold on to my camera with one hand while we hurtle downhill at ever increasing speeds!
  9. Some kind of wireless communication system so Chris is able to tell me about the BIG hits we're about to take!

As noted by Chris, the plan is to buy a high quality downhill bike and rape it for it's parts...then sell the frame and buy some other bits!
That said however...I'm not too proud to accept charity -or a massive corporate sponsorship! so, if anyone has any thoughts on where I might get some very good gear at good prices..or they have a some good quality gear sitting around that they might like to donate to a good cause...shout out and let us know.
finally; I'd like to thank all of those people who stopped and offered their help on those numerous occasions when we broke the bike...your an amazing group of people!!

see ya on the hills!

Monday, November 10, 2008

Molesworth Muster completed, next please

Looking back, we started riding tandem together in early September, about 9 weeks ago. I had never ridden a tandem before, and Logan had never gone off-road. Together, this was all new and exciting.
On Friday, we loaded up the car and headed to Hanmer. We were taking the shuttle to Molesworth, so loaded our gear and bike on the truck and chatted to people about the race and the tandem. Aboard the bus I was keeping an eye on the road as this was the track we're riding back out on and the last hill (Wards Pass) was a sudden and dramatic surprise. I hate hills, and this one was a doozy.
We arrived at the campsite, registered and I set Logan to work erecting the tent. Once up, it was dinner time, and Logan ate some weird meal-in-a-can while I fired up the gas ring and had hot burgers and espresso coffees. The temperature was dropping rather fast once the sun had fully set and it was only going to get colder as the night progressed. I was wearing all my nice thermal layers, and the night passed in an icy blur.

Sunrise and we were woken by the sounds of the campsite rising with the sun. Cold? You betcha! Each tent had a dusting of frost on it and all the bikes scattered around were white and frozen to the ground. Nice. We wolfed down some food, collapsed the tent, packed the bags and stuffed them back on the truck, then waited, shivering, in the cold for the race briefing and start. As the morning progressed it began to warm up, a lot, and those thermals became a burden rather than a benefit. Thankfully we could offload them at the start of the race.
We positioned ourselves towards the back as it's pretty much all uphill on the way out, and this turned out to be a bad idea. The hooter sounded and we were off. Slowly. Very slowly. Almost 600 bikes on a single lane gravel road don't move fast. We moved with the flow, trying hard to adjust speed by fractions so we don't collide with others (tricky on a tandem) and after the first small hill we start to overtake a few people, however, making headway is difficult, so we take it easy, Wards Pass is not far away and I don't want to burn out before we get there. In the small hills from the start line we notice that our uphill is not too bad, but our downhill is way faster than others.
We start up Wards Pass, and as it gets steeper and steeper, my lungs start to explode. Eventually I pull the plug and we walk the rest. We're not the only ones walking up this hill, and it's only a small amount slower than riding up. We have 70km to go, so don't kill yourself now. At the top we climb back on and there is a high speed descent down to the valley below. Wow. Fast? Yes indeed. We overtake about 10 people on the downhill, but I'm trying to maintain control rather than set a speed record.
At the bottom we cross the bridge and into the long flat sections. Here is where we can shine, and we do. During the next 20km we overtake massive amounts of people. We are cruising at 30kph+ and because of our momentum and speed we're collecting a tail of people slipstreaming behind us - about 9 or 10 at one stage. We manage to lose them at the first of the fords. We had a game plan for these - low gear, steady entry, peddle out, hold the line. And it works well. Very well. Our exit speed is high and once we're back to our cruising speed we have left our passengers behind and they can't catch us under the own steam.
This is the nicest ride we have done off-road. We're moving fast, holding 30kph, overtaking lots of people and feeling good. Our goal is to cross the finish line at about 4hrs. We are realists tho, and just finishing is the real #1 goal. When we pass the halfway mark, we're a touch over 2hrs, so on target. The uphills slow us down, and we get overtaken lots, but we take it back on the downhills and straights, and with almost 50km under the wheels we have made up a massive gain on the field. Logan does some quick roadside repairs and we blast off again.
The bike is going well, Logan has shot some videos while we fly downhill (mad!) by holding the camera in one hand, and the bike in the other: 
The sun is shining, the day is warm, everything is going to plan. Yup, this is usually where things start to go wrong, and today is no exception. We've ironed out most of the bugs in the bike, and broken all the bits that we're going to break, so this time it's human failure. Logan's hamstring starts to make noises that hamstrings really shouldn't make. Logan starts making noises like someone who is in constant pain and suffering. And as hard as I try, I can't ignore him for long. Our speed drops, we walk a few hills, and drift downhill so he can stretch. A couple of stops along the way to get some proper stretches in, but it's a slow uphill now, more up than down, and we're losing places rapidly. Still, the plan of finishing in one piece is way more important than beating any time we set ourselves. Over the next 10km we have more than halved our speed. We're looking forward to, and dreading, the final climb up to the top of Jollies Pass - the last hill.
Turns out, the hill I was most worried about climbing is nowhere as hard as I expected. We manage to spin our way to the top, and now it's all downhill. 400m descent in about 3-4km means high speed downhill time. Well, about halfway down, we hit a rut that has been gouged in the road and the wheel turns and locks into it. I can see spokes when I shouldn't be able to. We're going fast tho, and momentum pops us back out of the rut and back onto the road. I saw our front wheel bend and snap in half, I swear, yet we're rolling well, still spinning nicely. Disaster averted.
However, it's a long downhill and we're using plenty of brakes. I was wondering if the poor little rubber pads were going to last the distance. (oh for disks!) About 1km from the bottom of the hill we hear a loud hissing noise from the front wheel. Puncture. Big one. We manage to come to a stop (something I wasn't sure we were going to achieve) and discover that the front brakes have heated up the rim so much it's melted a hole in the tube. It's so hot we can't touch the rim for some time to change the now-soft tyre, but make the swap in about 15mins. The rims have cooled, and I'm fairly sure we'll make it all the way down without more damage, and we do. The last tiny bit of the track is the scariest of all. Through a narrow singletrack of trees and tree roots is not impossible, however there are two massive drops down to the thinnest bridge I have ever seen:
A slight right, over a bridge 400mm wide, then a sharp right. On a tandem. I was sure we (or rather Logan) was going over the side - there was no way in this lifetime we were going to make it across that bridge with those angles on a tandem. Surely? To my absolute surprise, we made it across. I could breathe again! A short hill, then quick dash to the finish line and we were home!!!
Final time? 5:10:11 - about an hour slower than we wanted, but we were in one piece, and the bike had made it to the end!
So, not a perfect result, but a damn good first effort. As the pain subsided and the beer & wine soaked the muscles, we decided that yes, we would do this again next year. And, we'll do some hill training too - we had only done 3 hill rides before this ride!!!
Talk moved to 'what next' and muttering about the Rainbow Rage have surfaced. It's not till March, so we'd have more than twice the time to train as we have so far.
So, major adventure #1 is complete, time to assess what we need to work on, change, upgrade and fix, then we'll eat and drink too much over the silly season and be fat and slow for the new year. Training will continue until one of us is broken permanently.