'Bent Riders

All thing recumbent, including recumbent bicycles, trikes, velomobiles and other HPVs.


* fluffy beards & sandals not mandatory :)

Members: 74
Latest Activity: May 20

Discussion Forum

A new seat

Started by Playdough. Last reply by Playdough Apr 29. 11 Replies

After some months since I got it, the webbing on my seat has finally deteriorated to the point where I had to do something about it. Even the temporary rope solution wasn't really doing what I needed…Continue

Price Drop to $3995 on My M5 M-Racer

Started by Ken Stephens Apr 27. 0 Replies

Just sharing :)Here's a thought if you're tall and/or big:  The M-Racer is to all intents and purposes as fast as a velomobile but there's no issue with fitting into it.If you want to argue about the…Continue

Any bent riders with lower back issues?

Started by piston9. Last reply by Aaron Ball Apr 14. 8 Replies

Just putting out the feelers - does anyone have lower back issues that were made less by a bent?I've already moved from a roadie to a flat bar, but even that still hurts at 40+ k's, and i ride almost…Continue

M5 CHR Build Diary.

Started by JamesD. Last reply by Ken Stephens Apr 7. 93 Replies


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Comment by piston9 on May 20, 2016 at 9:06am

JamesD - Good, not great (short answer).

Long answer - 

The key problem is that the seat is 'flat', not shaped anatomically. This weekend I am going to cut a small gap in the top layer for my coccyx, but I would also like to better shape the top pad - I'm wondering if heating may work, but I will experiment :D.

So there are still some 'pain' spots (it's still a reasonably upright bike), but definitely better than it was!

Comment by JamesD on May 19, 2016 at 9:54pm

And the verdict on the seat is???

Comment by piston9 on May 17, 2016 at 4:25pm

The Cruzbike received a long planed upgrade today - new seat bottom (I may think about replacing the back as well). By default it comes with a 2 part foam - one very soft (And useless due to age), the other like cardboard.

Replaced with 2 layers of 15mm yoga mat, $20 delivered. I tried clark rubber but their prices were insane :D. I used about 20% of the mat, enough to also do the back, do my sons canoe, and still have leftover. 

A quick 5 minute test tells me it is WAY better, but tomorrows commute will be more definitive. Best $20 spent so far!

Comment by RecRider on May 10, 2016 at 1:11pm

Thanks Noel we'll give it a try.  Fingers crossed I won't have to use Sheldon Brown's foot-shifting derailleur method :-)

Thanks also Aaron, Lawrie and Melvyn.  I looks like Noel's 26T cog will fit the existing chainring.  If the 26 tooth cog experiment fails I could look into swapping the 9sp Tiagra triple (50/40/30) off my cyclocross and see if the derailleur copes better.  

Failing that I might have to investigate either a custom chainring (Race Face were great on my old MTB) or rebuild the rear hub with an internal gear.  At the current point in time, I'm trying the cheaper options but maybe at some time in the future the internal hub would be a good idea.



Comment by Noel Sopeer on May 10, 2016 at 8:21am

Nerrida, I have a 26 tooth cog for you. I have sent you a personal message with my phone number, can you call me sometime if you still need it.

Comment by mib on May 9, 2016 at 4:22pm

Yeah Mary, keep the smellies away from the mothers. ;-)

Comment by Mary Martin on May 9, 2016 at 3:05pm

Healthy looking crew and they put a table especially for you out in the paddock.

Comment by Melvyn Yap on May 9, 2016 at 12:56pm

Photo from yesterday's ride

More here

Comment by Melvyn Yap on May 9, 2016 at 11:49am

Replacing the chain ring is the simplest and cheapest solution. But if you don't mind spending a bit more, and want to extend your gear range both top and bottom end much further, I'd recommend installing an internal gear hub in your rear wheel. This would multiply your existing number of speed by 3, giving you a total of 81 speed. What it practically means is that you have access to 2 or 3 more lower gearing, 2 or 3 higher gearing. I used to ride a fully loaded GT3 with this gear range and have used the lowest gear on long steep climbs. Without those gears, I wouldn't have been able to manage those climbs.

Comment by Noel Sopeer on May 9, 2016 at 9:57am

Nerrida, I had a quick look online and could only find a 50&39 & a 30 but no 26 for a 9speed triple.  As you need to ensure you get the correct ones and remove the crank to replace them and as Aaron points out the correct chain length as well it might be safer to get a bike shop to order what you want and to fit them (more expensive) if you can't get someone with the knowhow to help you fit them. They can also check the condition of your chain which may also need replacing. Mine are 130 & 74 bcd not 70. Epic Cycles might be able to help you more.


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