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[Closed] carrying a bike on a motorbike....hear me out please!

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Oi Al, I can make you one.


 
Posted : 16/07/2011 8:17 pm
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perhaps not. but that doesn't seem so funny in my head! ๐Ÿ™‚


 
Posted : 16/07/2011 8:18 pm
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๐Ÿ˜†


 
Posted : 16/07/2011 8:20 pm
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Mavic carry a shed load of bicycle wheels on a touring scooter in the Tour de France.


 
Posted : 16/07/2011 8:20 pm
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cynic-al - Member

Hub would spin like it always does ..with no weight on it.

Non-stop, at higher speeds, for longer durations.


 
Posted : 16/07/2011 8:24 pm
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So?

You worry that it might be an issue but you don't know why.

Druid...how so? Tarmac is mostly quite smooth?


 
Posted : 16/07/2011 8:36 pm
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cynic-al - Member

You worry that it might be an issue but you don't know why.

Er no, I've already explained why.


 
Posted : 16/07/2011 8:43 pm
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AS I said at the beginning there is a chap doing this with a tandem in the states and it is no issue. The wheel does not explode, the bike does not bounce around, its not a issue.

teh problem here will be the various trailer regs - construction and use as I think the bike would effectively become a trailer and thus need to meet the regs - including a plate with its load carrying capacity and so on


 
Posted : 16/07/2011 9:03 pm
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First trip to les gets about 10 years ago met a danish guy on an old guzzi with home made rear rack. Dh bike mounted on rack at bb with fork on bracket over pillion seat with front wheel and all camping n riding gear next to it . Rode from Denmark with it totally secure


 
Posted : 16/07/2011 9:09 pm
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Would anyone else be interested in one? I'm thinking of making up a few...


 
Posted : 16/07/2011 9:10 pm
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NW you have not explained why any of those factors might matter.

Duration...hubs are being ridden continuously for 5+hours daily.
Speed...many have hit 60mph or close. That's 3 times a normal average speed, any overheating issues would be down to grease I expect.

Ta TJ I thought that's where it might end up


 
Posted : 16/07/2011 9:21 pm
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cynic-al - Member

NW you have not explained why any of those factors might matter.

Do I really have to? ๐Ÿ˜• What wears out bearings? This is lots more of the same.

Also, if 20mph is your average speed, take up racing.


 
Posted : 16/07/2011 9:35 pm
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Oh and sorry about the sand in your vag grum, I didn't put it there tho


 
Posted : 16/07/2011 9:42 pm
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Quite common in the USA. I've seen lots of bike carrier stuff on advrider.com

[url= http://www.advrider.com/forums/showthread.php?t=233245 ]One of many threads...[/url]


 
Posted : 16/07/2011 9:43 pm
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SO NW your point is bearing wear? I think I can handle that.

20mph or thereabouts on many rides, racing is quite a bit faster.


 
Posted : 16/07/2011 10:57 pm
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cynic-al - Member

Druid...how so? Tarmac is mostly quite smooth?

Except when it's not ๐Ÿ˜‰

Seriously, have a look at how an undamped trailer bounces around over every road imperfection. That's why folk run trailer tyres at ludicrously low pressures (which might be a partial answer for you).


 
Posted : 16/07/2011 11:01 pm
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please promise you will start a what tyre thread for this ๐Ÿ˜‰


 
Posted : 16/07/2011 11:11 pm
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The bloke who is the brother of the bloke who is a Prof at Lancaster and whose name I dont rememebr used to appear at trailquests with a bike on the back of his bike.

Was it Jon Bardgett? May see him at a TQ tomorrow and will ask him. He certainly used to travel that way. His brother works in Keswick Bikes.
[url= http://www.sleepmonsters.com/profiles.php?racer_id=192 ]Jon[/url]


 
Posted : 16/07/2011 11:18 pm
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It works and is no problem. they are using a different wheel with no casette. No bouncing around, no problems with the hub. [img][url= http://farm7.static.flickr.com/6011/5944568010_d6a008fe46_b.jp g" target="_blank">http://farm7.static.flickr.com/6011/5944568010_d6a008fe46_b.jp g"/> [/img][/url] [url= http://www.flickr.com/photos/25846484@N04/5944568010/ ]Image1[/url] by [url= http://www.flickr.com/people/25846484@N04/ ]TandemJeremy[/url], on Flickr[/img]


 
Posted : 16/07/2011 11:29 pm
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The dog increases the awesomeness by a factor of mega!


 
Posted : 16/07/2011 11:43 pm
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yeah but look how much weight it keeping the rear wheel on the floor lol


 
Posted : 16/07/2011 11:46 pm
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cynic-al - Member

20mph or thereabouts on many rides, racing is quite a bit faster.

Average speed of the Tour is 24mph. Average speed of the "super fast" world cup XC round at Pietermaritzburg was 12.4mph. And they only had to do that for an hour and a half, so go get 'em ๐Ÿ˜‰


 
Posted : 16/07/2011 11:53 pm
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Two wheels being carried, so that looks like a "special" rear wheel to be used whilst towing.

In previous discussions with TJ, we already covered the idea of carrying weight on the towed bike (panniers) in order to reduce the bouncing. It also looks like that tandem has suspension, which would, again, reduce the bouncing issue.


 
Posted : 16/07/2011 11:54 pm
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NW - even I can average 20mph on a decent ride (and I'm not as fit, young or gnar as Al).


 
Posted : 16/07/2011 11:55 pm
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Jeez Northwind what's your problem? Your first point kind of fell apart now you're flogging this one?

If you knew anything about road riding you'd know how much harder 24mph is over 20...and even 4th act races can average 24mph.

So go flame 'em ๐Ÿ™„


 
Posted : 16/07/2011 11:58 pm
 GW
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I take it none of you have ever ridden a bike with an unladen tag along?

for once Drhuidhd is right


 
Posted : 16/07/2011 11:58 pm
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I once read somewhere, and I can't remember where it was, about someone carrying a bike on their back using a modified rucksack of some sort. This would circumvent all trailer issues, although it's not the most practical. In fact, of the bike was anything like my old monocoque frame Enduro, you'd probably fly off the back of the bike due to the increased drag...

Not sure on the trailer idea though, mainly for hub and tyre wear.


 
Posted : 17/07/2011 12:08 am
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cynic-al - Member

Your first point kind of fell apart

When did that happen? Even you've admitted it'll increase bearing wear. Mounting it wheels-up is a better way to do it. Obviously wouldn't work with a tandem though which is presumably why Mr Goldwing up there is going through all that extra complexity, mucking around with extra wheels etc. (he's got the real world experience here, and he doesn't want his regular rear wheel on the ground) Mounting it similiarly to what I described earlier will be much more compact too, and no thinking about bouncing around, or worries about legality.

As for the racing- last year in the XC world cup, only Dalby was over 20kph average. Champery was 16.71kph. Are you only talking about road riding or something? Might be worth mentioning it if you are.


 
Posted : 17/07/2011 12:10 am
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๐Ÿ™„ This is Singletrackworld. [i]Of course[/i] he means road riding!!


 
Posted : 17/07/2011 12:25 am
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Heh. How stupid of me.


 
Posted : 17/07/2011 12:43 am
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20mph mtb riding heh I'm fast...but that would be super human and therefore a bit silly!

I don't accept bearing year would be a problem, just that I understood your point. I run cup and cone rear mtb hubs, never worn one out in 25 years of riding.


 
Posted : 17/07/2011 4:08 am
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Well it looks like the rack is the better way, given towing requires >125cc
http://www.mono-trail.co.uk/single-wheel-trailer-law.html


 
Posted : 17/07/2011 5:29 am
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Even though you called me fat I will stick in my 2 pennies worth.

Towing would need a chunky bike (or laden down a bit) for some stability. I don't think bearing wear on the wheel would be a major issue but I reckon tyre degradation would be, ala standard road tyres on turbo trainers delaminating and generally falling to bits.

Carrying on a rack deffo betterer.


 
Posted : 17/07/2011 6:07 am
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could you (*and I'm suggesting this might have some flaws):
- take mbike pillion pegs off
- add a decent mbike rear rack
- make (*get made by a pro) an upside down U shaped solid mount that bolts from pillion peg mount across seat behind rider (and possibly also bolts to rear rack)- that had QR clamps on the sides of the U to mount the bike wheels sort of in same plane a mbike rear wheel but higher (ie get U mount right shape to put things where you need)
- U has a qr mount in middle of U (ie on rear seat behind rider)
- add an upright pole etc to mbike rear rack with a qr at top
- bike goes behind rider from U to top of pole
*mabe a one piece upside down U with a reveresed L stuck to it so you could just bolt it on/off as a oner (using pllion peg mounts and rack etc)
stability and wind impact unknown,
other idea is, again using pillion pegs, wheel mount on each side as before but leave bike attached to rear wheel and again have a pole off a rear rack etc


 
Posted : 17/07/2011 8:18 am
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Its for tyre wear and to prevent drivetrain wear that the folk above use an different wheel when towing.


 
Posted : 17/07/2011 8:38 am
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Hi

I used to carry my Kona on the back of my R1150GS, I had the side pannier on the bike, which mean the bike was approx 90cm wide, I made a bracket that allowed the bike to hang widthways on the back of the bike- number plate and lights showing through the frame. I then had both wheels lying flat across the rear / pillion seat area- very stable and - important for me - IF I had a crash, it was unlikely that I would be injured by bits of MTB hitting me- some of the designs where the bike is high up on the moto just make me think of being impaled by a pedal or something....
Changed bike now, and the new one seems a bit more delicate for this sort of thing


 
Posted : 17/07/2011 9:21 am
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I'm the guy from Retrobike who carries his bike on his scooter.
Fabricate a rack to strap to the pillion seat. Lie bike on its side minus the wheels length ways with forks by your back, rear dropouts to rear, strap wheels on top.
As bike is flat from front/side view side winds are not a real issue.
Under letter of the law (useful to know if polis take interest) is something can over hang rear of vehicle by 60% of the distance from the front axle to the rear most point of the vehicle. A bike should be less than 60% overhang unless transport vehicle is a small moped. Make sure all vehicle lights and reg. plate are unobscured.
As for side overhang of less than 25cm if your in Spain remember if you take seatpost out most bikes unless the riders a giant are going to be well less than a meter wide so allowing say 30cm for the seats width and ignoring the handlebar width, less than 25cm will overhang either side.
Transporting a bike by a motorbike is easily doable it just needs application and trial and error.
Cheers ๐Ÿ˜‰


 
Posted : 13/10/2011 3:16 pm
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