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Off Road


Offroad Crash Data

Due to the bans imposed on rural riding during the foot and mouth scare of March 2001 Addiscombe riders conducted a series of experiments to further man's knowledge of the countryside. The detailed logs of experiments conducted locally on our regular Sunday mtb ride on 4th March 2001 appear below. Photographic evidence will follow.


Test Subjects Troy, Simon, Brian, Marco, Martin, Joe and Jason (behind the lens)

 

Experiment 1

Test Subject's Name:

 Joe P.

Subject Category:

Juvenile XC racer.

Experiment Undertaken:

Nailing the bombhole in the park.

Expected Outcome:

Graceful 0.8 metre forward freefall leading to smooth landing 0.5 metres below on 45 degree downward slope.

Actual Outcome:

Subject unfortunately took the vertical root strewn drop in and flew about 2 metres through the air over the handlebars landing heavily on his knees. Subject then slid downhill on the wet chalk until reaching the bottom of the descent.

Biological damage sustained :

Inability to stand for approximately 60 seconds.
15 cm gashed right thigh.
Bloody right kneecap.
Deep lacerations (2) above kneecap which required insulation tape to keep skin bonded. Unfortunately insulation tape was not present in first aid kit. Antiseptic tissue was available so token blood wiping gesture was performed. 

 

  
Subject at T plus 2 minutes

Physical damage sustained:

Surprisingly little. Spd cleat sheared away from right shoe. Cleat stuck in right pedal.
Snapped spoke in rear wheel. Note rear wheel was already missing 2 spokes. Perhaps missing spokes were cause of experiment error?

 

 

Experiment 2

Test Subject's Name:

Troy.

Subject Category:

Senior DH rider.

Experiment Undertaken:

Descent of 30 shingle strewn wooden steps.

Expected Outcome:

Fast smooth descent to bottom of said steps.

Actual Outcome:

Subject took approach to steps very fast. Did not apply brakes sufficiently. Hurtled down 10 steps at high speed until hitting 11th very large step. Flew over handlebars to land on steps below with bike then landing on top of subject.

Biological Damage Sustained:

None (subject wouldn't admit to any).

Physical Damage Sustained:

Front half of front MX style mudguard snapped clean off. Subject stored mudguard half in rucksack in case of possible repair back at experiment HQ. Experiment observers consider repair unlikely.

 

 

Experiment 3

Test Subject's Name:

Brian E.

Subject Category:

Veteran Novice. Second ever offroad experience.

Experiment Undertaken:

Extremely large jump from bombhole with dangerous pit between official take off and landing areas.

Expected Outcome:

Following large downhill run up subject should be traveling in excess of 20kph and vertically gain 1.6 metres of air before landing two wheels simultaneously approximately 2.3 metres away, avoiding trees in immediate vicinity.

 


T minus10 Minutes. Control subject Troy shows expected outcome

 


T minus 5 minutes. Control subject Simon displays incredible powers of correction. Note compression of front tyre and suspension forks.

 


T minus 3 minutes. Control subject Simon performs experiment flawlessly.

 

Actual Outcome:

Subject took long anxious run up to jump failing to get required speed for safe take off. Subject did not abort experiment and instead gained only 1 metre of vertical air and 1 metre of horizontal air. Subject interfaced with the ground by way of front wheel landing in dangerous pit sending subject hurtling to ground shoulder first with loud impact noise from both bike and subject. Bike then landed on top of subject.

 


T plus 0.001 seconds. Experiment goes horrendously wrong.

Biological Damage Sustained:

Very High. Subject could not move for approximately 60 seconds and could not stand until approximately 3 minutes had elapsed.
Subject complained of winding, injured shoulder, sore chin / cheek and possible broken fingers and/or thumb.
Subject requested mobile phone to call for outside assistance which was subsequently not required.
Experiment observers suspected possible broken collar bone.
Subject took no further part in following experiments and walked home pushing bike with remaining good hand.

 


T plus 3 minutes. Subject unable to stand.

Physical Damage:

Surprisingly little. Coil security lock departed from bracket on stem, canvas tool bags required straightening and frame mounted pump holder snapped off. Rear suspension developed 3 cms of lateral movement which was corrected by tightening suspension pivot allen bolt.

 

 

Experiment 4

Test Subject's Name:

Joe P (again).

Subject Category:

Juvenile XC racer.

Experiment Undertaken:

Drop off onto downhill run leading to possible later jump.

Expected Outcome:

Similar to Experiment 1 above. Subject should take 10 metre run up on grass and pebble surface to approach 2 metre gap in foliage at approximately 15kph where drop off onto pebble downhill surface provides 1 metre vertical air with 1 metre horizontal freefall air before presenting later jumping possibilities.


T minus 6 minutes. Control Subject Marco performs experiment carefully.


T minus 4 minutes. Control subject Simon performs experiment carefully.

Actual Outcome:

Subject took approach at least 5 kph faster than recommended 15 kph and surged forward strongly on takeoff. Subject traveled at least 3 metres forward giving at least 2.5 metres of horizontal freefall ensuring that subject overshot safe downhill landing area and impacted on flat ground. Because subject only had one working cleat engaged in left pedal (see experiment 1 above) the subject's unsecured foot slipped from the right pedal with the heavy impact of the landing leading to the subject hanging from the bike on the right hand side trying to restore control. Bike veered in uncontrollable  anticlockwise circle with saddle nose poking uncomfortably into subject's gluteous maximus. Bike came to halt as it threw subject to the ground as subject's face contorted with associated pain. Subject never made it to possible later jump.


T minus 0.5 Seconds. Subject approaches take off at dangerously high speed.


T plus 40 seconds. Subject still unable to stand.

Biological damage sustained :

Damaged chin. Will probably show signs of bruising within 24 hours.
Bloody left kneecap.
Inability to stand for approximately 45 seconds
Subject will keep participation in experiments secret and advise concerned parent that all damage occurred 'whilst on a road ride'.

 


T plus 2 minutes. Biological damage originally sustained in experiment 1 is now much worse.

Physical damage sustained:

Broken sunglasses.
Bent seat post.
Rear LED light bent and subsequently pointing perpendicularly to traffic approaching from right of subject. Light now useful for busy junctions only.
Front LED light no longer functioning. Damage could possibly have been sustained in experiment 1.
Strangely deformed front brake configuration

 

 

Experiment 5

Test Subject's Name:

Jason T.

Subject Category:

Senior DH racer.

Experiment Undertaken:

Nail a gnarly descent littered with drop-offs, jumps and roots.

Expected Outcome:

Smoothly take all drops and jumps, negotiate roots and rail round corner at bottom of slope at a speed of 23 kph.

Actual Outcome:

Subject attempted to ride said slope at 40 kph and managed to ride first two drops  before sliding uncontrollably towards nearby fully matured tree. Missed nearby fully matured tree only to be on collision course for a second, larger tree. Subject abandoned bike at high speed just before impact and avoided second larger tree. Bike was not so fortunate and collided with second larger tree.

Biological damage sustained :

Inability to stand for approximately 60 seconds. 
Suspected broken big toe on left foot. 
Damage to right elbow.

Physical damage sustained:

Surprisingly little. Front MX style mudguard bent backwards with nose of said equipment bent behind the fork bridge. No other damage.


T plus 90 seconds. Front mudguard still mangled by second larger tree.

 

 

Experiment follow up notes:

Email received from Joe P (Subject in experiment 1 & 4)

Cool ride today. Never knew about half that stuff.
Really good fun, nice to do somthing different.

OK, the injury list:
See picture, but just incase there is too much blood
in the way:

Long gash down thigh;
Two shorter but very deep laserations above knee;
V. painfull/swollen kneecap;
Tempararily paralised thumb;
Severe headache!

The bike/other stuff:

Bent seat post;
Broken front LED;
Broken sun glasses;
Sheered cleat bolt threads in right hand SPD shoe
(where the cleat was ripped from the shoe);
Straingly deformed front brake.

The pain didn't spoil the ride, (didn't really kick in
until I got home) but its a bitch trying to ride with
only one foot clipped in!

Will see you all on Saturday, provided I can get my SPuD
sorted out. If not I will be out Sunday with my flats.

Joe.

As you can see subject was well enough to compose email within 8 hours of experiment. Suspect 'severe headache' affected subject's spelling.

 

Email received from Brian E. (Subject in experiment 3)

i am typing this email one handed as my left thumg and index finger appear to have stiffenend alot pity then that i didnt land on me old chap it would have cheered up the wife who is downstairs probably threatening allsorts of bad things if i do it again!!!!!.I also forgot to add to the list a small 1/2th inch cut to chin abrasins to inside of left leg an ache in my ribs,anyway apart from that i'm ok dont know about next week i will have to see if the rabbits need cleaning out or my thumb joint unseizes.All the best to you lot see you when im repaired Brian

We were very pleased to receive this email within 24 hours of the experiment as we were all very concerned for the well being of the test subject. As you can see from the email the subject now has use of only one hand and could not access the shift key on his keyboard to  punctuate this message due to the pain involved . We look forward to the subject's return to the lab and will be advising him not to take part in further dangerous experiments.

 

Email received from Jason T.. (Subject in experiment 5)

I thought I'd let you know how I am now. It took me 5 minutes to get my left shoe on this morning and I am limping like a pervert at the school gates! My toe has since swollen to the point where it is now filling my shoe, and I am dreading having to take it off when I get home. In addition, whenever my elbow brushes against anything, a sharp, searing pain is sent jolting through my body. Still, it was worth it for the best day's biking I've spent in many a month! 
Jason

 

 

Addiscombe Disclaimer

All experiments were carried out by voluntary subjects who knew the risks involved. Addiscombe do not condone this type of science but feel it would be morally unethical to stop the study of gravity in the countryside and its effects on the human body and pain response systems. All mountain biking is dangerous. Always ensure you have the appropriate safety equipment and responsible helpers when conducting similar experiments.


Martin discovering alternative safer route for experiment 4.


Marco investigating possible future experiments.

All pictures Copyright Addiscombe CC / Jason T.