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PostPosted: Mon Mar 04, 2013 8:23 pm 
retrobike rider
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Joined: Tue Sep 30, 2008 6:25 pm
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Location: Near Wendover Bucks
Here's the link to the eBay listing:
http://www.ebay.co.uk/itm/170995785675? ... 1423.l2649


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File comment: An original advert for the Cleland Aventura
1983 cleland_ad_from the Fat Tyre Flyer.jpg
1983 cleland_ad_from the Fat Tyre Flyer.jpg [ 234.87 KiB | Viewed 550 times ]
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PostPosted: Tue Mar 05, 2013 6:26 am 
retrobike rider / Gold Trader
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Joined: Fri May 08, 2009 10:01 am
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Location: Stockport, staring at the Peaks
Sure my posts keep disappearing :?

Kickstarter.com was the one I was thinking of, not sure how appropriate it is or how it compares to crowdfunding but you never know, might be useful :)

Loving the original ad! 8)


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PostPosted: Tue Mar 05, 2013 10:31 am 
South West Deputy AEC
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Joined: Mon Nov 09, 2009 4:53 pm
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Location: Devon
Even though there are plenty of differences, I'm kind of seeing the Surly Krampus as a descendant of these bikes.........
29" wheels, wide rims & the ability to run tyres at very low pressures, discs rather than drum brakes. Sliding dropouts, so the ability to run the bike with a hub gear, thus making it pretty much all weather proof.


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PostPosted: Tue Mar 05, 2013 11:18 pm 
retrobike rider
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ajantom wrote:
Even though there are plenty of differences, I'm kind of seeing the Surly Krampus as a descendant of these bikes.........
29" wheels, wide rims & the ability to run tyres at very low pressures, discs rather than drum brakes. Sliding dropouts, so the ability to run the bike with a hub gear, thus making it pretty much all weather proof.


Though there is no known link between the Krampus and the Clelands they do share the same ethos as do FatBikes in general. An off-road, off-trail touring ethos. Surly and Cleland also have a similar design approach in that they are both innovators who do not follow the latest fad or fashion like the vast majority of bike companies.

When the first Clelands were designed there were very few rules constraining the design of off-road bicycles. Modern designers and their customers have many preconceptions regarding what an off-road bicycle should be and do though Surly appear to be far less constrained than most.

It is likely that future FatBikes will become more Cleland like because many of the problems experienced by FatBike riders have long since been solved by Geoff Apps designs. Perhaps the Surly Krampus is the latest stage in this evolution towards more efficient and all-weather FatBikes?

The latest Cleland news is that some bio-mechanical academics in Belgium have concluded that in theory non-round chain-ring with off-set cranks and combined with off-axis swing pedals will develop 7% more power than standard pedals and round chain-rings.. A combination that Geoff Apps has been using on his Cleland TT for the last 3 years. Of course the road-racers need to be quick in utilizing this technology before the UCI ban it. :facepalm:

Or perhaps the bike industry will wait 30 years before adopting this idea, like they did with 700c wheeled mountain bikes?


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PostPosted: Wed Mar 06, 2013 5:50 pm 
Retro Guru

Joined: Tue Jun 30, 2009 2:46 pm
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What do they mean by 'off-set cranks'?


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PostPosted: Wed Mar 06, 2013 7:15 pm 
retrobike rider
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DoctorRad wrote:
What do they mean by 'off-set cranks'?


That's a bit off-topic for this thread so I have posted some details here:
viewtopic.php?f=41&t=109507&p=1848538#p1848538


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PostPosted: Wed Mar 06, 2013 10:02 pm 
MacRetro rider
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Joined: Mon Nov 10, 2008 10:39 pm
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Location: SE Scotland
They call it off-set, I call it 'retardation'.

Looking at the chainset from the off-side (transmission side) of the bike; when the major axis of an ellipsoid is vertical, the crank should be at aproximately 2:30, or 15 degrees above horizontal.
This angle varies a little bit for a 'normal' bike layout.
A lot of people believe that the crank should be horizontal, or at about 4:30, about 30 degrees advanced.
Research suggests that 15 degrees retard is optimal, and I agree.
I cannot see that reducing that angle of retardation, or advancing the orientation would provide any advantage whatsoever.
However, the optimum retardation angle will be different for recumbents, and different again for different recumbent layouts.

If 'out of round' chainsets become popular again, will the correct orientation be adopted?
At least, this time around, we have internet forums, so some people will know their onions.


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PostPosted: Sun Aug 04, 2013 8:25 pm 
Devout Dirtbag
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Joined: Wed Sep 02, 2009 10:43 pm
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For anyone dropping in on this thread she's now in the hands of a new owner (Me!!) and in the early stages of restoration.

Always fancied a Highpath back in the day and didn't know these were the forerunners.


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PostPosted: Sun Aug 04, 2013 10:34 pm 
MacRetro rider
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Joined: Mon Nov 10, 2008 10:39 pm
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Location: SE Scotland
Hello Mike ~

I hope your Original Aventura project goes well.
Post some photos of the process for us, eh?


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PostPosted: Sun Aug 04, 2013 10:52 pm 
Devout Dirtbag
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I will do Geoff.

Gutted we couldn't meet up for a ride last week though and I only just heard about the meet up too but it clashed with our BMX clubs regional where I was marshalling.

Started to strip it down now and have managed to get the pedals off without damaging the cranks (pedals may not go back on though!!)


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