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PSA: Fatbike is no ...
 

[Closed] PSA: Fatbike is no longer niche, I've bought one (also PSA Fatty's are £640)

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I've already fitted lighter tubes so how much extra weight do you think this will lose me ?


 
Posted : 20/12/2014 5:32 pm
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Here's some weights:

On-One tubes: a small moon (about 580g)

Schwalble FR tubes: 195g

On-One plastic rim tape: 80g

Foam + Gorilla tape + valve: 90g

Sealent: Not tried yet, but most seem to suggest 100g or so (about double a normal 29x2" tyres worth).

I suspect there's probably a way of saving more weight by using normal ductape or even something lighter (parcel tape?) as the Gorilla tape was 85g (according to my scales, yes this adds up to more than 90g when you add in the negligible weight of the foam and 15g for a valve, blame the scales, everything was weighed on the wheel so 1800g +/- 5g isn't to bad for accuracy!).

So ~100g less than lightweight tubes, but really I wanted reliability, I chuffin hate punctures, and there was the unseating issue.


 
Posted : 20/12/2014 6:53 pm
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TINAS, that's a good guide you've done there, thanks 🙂
I intend to tubeless my Cooker Maxi at some point, I've heard the foam thing mentioned, but that's the best explanation I've seen, cheers.


 
Posted : 20/12/2014 7:40 pm
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Thanks for the weights mate that makes interesting reading. I can get the foam and tape free from work so I might well give it a go over the hols.


 
Posted : 20/12/2014 9:10 pm
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PeterPoddy

I once rode a fatbike round a carpark and it was shite.

I don't see the point in them. 😉
2010 is calling they want their predictions back. 😆

TINAS.
No need to get the tape up the side of the rim.

Streched tight up to the side works just as well.


 
Posted : 20/12/2014 9:15 pm
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There's something not quite right in the front, added the sealent and there's some leakage through the joint where the rims pinned but odly it comes out in the middle of the rim, hopefully it'll seal but it does imply that air/sealant is getting round somehow. Might be worth adding a layer of electrical tape around the seam if I was doing it again as well as slightly under sizing the foam a bit more. Currently holding 40psi though so it'll seal up as the sealent dries in the crack.

Rear sealed perfectly though.


 
Posted : 20/12/2014 11:00 pm
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That's me Def on it then ? well done Tinas.


 
Posted : 21/12/2014 12:40 am
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First ride on the tubeless wheels, it survived! 35psi for the first few miles to be sure they'd seated then down to the 11-9 psi Id been using with tubes. It's definitely different, felt like there was more spring to it, presumably less 'damping' from the tube? Ended the ride (deliberately) a few psi less and found there was quite a narrow sweet spot between too bouncy and draggy but it's there and it's even quicker than with tubes! Surprised how many top 3's it got on Strava despit me being so unfit and really just bimbling, it really does just grip tenaciously so you never need to brake for corners!

And met someone who'd ridden his Fatty all the way down the French and Spanish coast including every little headland to Portugal! Apparently the rear tyre was a little slick by the end!


 
Posted : 21/12/2014 10:05 pm
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they fly quite well
[img] [/img]


 
Posted : 22/12/2014 7:04 pm
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To everyone who has bought a Fatty, can you check your drive side BB seal and see if it has moved?
It seems the shaft/spindle is too long and the plastic bearing protector moves outwards exposing the bearing to the elements!
I have used a zip tie to act as a spacer to keep it in, but I am not really happy about having to do it with a new bike!


 
Posted : 24/12/2014 2:26 pm
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there's some leakage through the joint where the rims pinned but odly it comes out in the middle of the rim, hopefully it'll seal but it does imply that air/sealant is getting round somehow.

Sound like air/sealant is getting passed your tape. All the tubeless guides ive read suggest you need multiple wraps of gorilla tape (in one constant run) to get a full seal. Also, gorilla tape is cloth based so will absorb the sealant. Saw one guide where they suggested some new fancy transparent gorilla tape, but you cant get that in the UK. Wonder if some decent vinyl tape might be a suitable alternative? Packing tape dosnt seem to have the stretch required for fatbike rims with cut-outs apparently.


 
Posted : 24/12/2014 3:00 pm
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Hi
Is this the clear gorilla tape you mean?
http://www.toolstation.com/m/part.html?p=57078
Looks up to the job, and you only need to spend a tenner with them
To get free next day delivery!


 
Posted : 24/12/2014 10:38 pm
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Obviously not interested at all - but anyone over 6' riding one? At 6'2" presumably a 20" frame?


 
Posted : 24/12/2014 11:48 pm
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Did my tubeless conversion on drilled On-One rims with Floaters using just a split bmx tube. No problems at all. No flats, no air loss and tyre still on at 7psi. The only thing I had to do was put a strap around it to pinch it down on the rim to start with.

Must admit to being a bit nervous as the tyres felt loose to fit, but in 10 months it's been fine.


 
Posted : 25/12/2014 12:02 am
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Obviously not interested at all - but anyone over 6' riding one? At 6'2" presumably a 20" frame?

6ft 1in and a bit here and I went for 20". Seems okay so far but I haven't had chance to ride it properly, that will have to wait until Sunday.


 
Posted : 25/12/2014 12:15 am
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Obviously not interested at all - but anyone over 6' riding one? At 6'2" presumably a 20" frame?

Same height here, test rode 18" a few time but plumped for 20" and it's spot on. All sizes have the same stand over anyway. Running a 65mm stem with Carnegie's bars


 
Posted : 25/12/2014 7:32 am
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6' 1" here on a 20" happily.

I did consider the 29", glad o didn't buy it.


 
Posted : 25/12/2014 9:27 am
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Thanks chaps! Clearly, just a hypothetical question from me.

Happy Christmas, all!


 
Posted : 25/12/2014 9:43 am
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5' 11" on a 20" here. I had a medium and sold it as it was too small.


 
Posted : 25/12/2014 10:46 am
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6'2 on an 18 - with the standard short stem and wide bars.... 🙂


 
Posted : 25/12/2014 11:46 pm
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@Lightman.

My Fatty had the same problem. I spotted this on the UKFatbike forum...

"Just to let you folks know.
Any one with a on one fatty.
There is a problem with the bottom bracket .
The crank on the drive side doesn't butt up to the bottom bracket if you look you will find a 3 to 4 mm gap.
Because of the gap your drive side bearings are getting full of crap .
To solve the problem you will have to fit 2 to 3 spacers on the drive side bottom bracket
Hope this helps ......"


 
Posted : 06/01/2015 7:48 pm
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Who designed these On One fat rims? Just had to do the soapy water thing for the second week running to get the tyres seated properly. Seriously not enjoying pumping a 4" tyre up to 40psi with an Aldi track pump either, that'll teach me for being a cheap sod. Going to have to take note of that tubeless method once I get some tyres other than the self steering tat that's on now.


 
Posted : 10/01/2015 9:59 pm
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