I’d decided to have a wee Pentlands “shake down” spin on my fatbike yesterday afternoon. It was grim! Horizontal blizzard, powder snow up to 18″ deep, deep & muddy puddles. Numerous tweaking and leaking tube and shock required numerous stops 🙁

Quite a laugh though, despite falling into a puddle at the start and getting proper wet (the ebayer who’d sold me the spds had one side tight and the other really slack 😕 ) but at least my jacket didn’t stay wet- it froze 😡 along with my beard 😎

Untitled by alan cole, on Flickr

Bike works OK, 2″ taller BB is a bit of a drawback. I’d glue a second BB shell underneath the existing one but my guess it’d **** up the suspension and of course create front mech issues.

Untitled by alan cole, on Flickr

Well this has gone down well! 🙁

Well this has gone down well!

It’s a Marin… on STW… what were you thinking would happen 🙄

Looks good fun … did you have a flask with you? It’s rides like that when it’s good to stop and sit with a cuppa and a choccy biscuit. Twas a bit grim coming up the cyclepath to work this morning, feet still soaked. Friday looking interesting for Edinburgh.

Loving the homage to that well known photo…

Looks ace Al!! 🙂

Hahah firs thing I thought of too Teetosugars

Needs moar close ups of structural cutlery, that’ll get the crowds rushing in.

Hahah firs thing I thought of too Teetosugars

Great minds an all that!!

Oh, I’ve just put an order in for a frame bag.. Fancy some bivi trips up your way soon??

Been through some boggy stuff looking at the amount of crud inside the rim!
Frozen beard? Nice.

I’d glue a second BB shell underneath the existing one

😯

OP – I’d love to see some details of what you did to the Marin to make it fat!

Jeeze! Even the bike got stuck to your beard.

Search me old threads mate!

Looks like you’ve blown a seal.

munrobiker – Member

Needs moar close ups of structural cutlery, that’ll get the crowds rushing in.
That was my first thought… 🙂

Well I like the look of that, Marin or not, looks like a top shelf botch to me.

cynic-al – did you have to mod the rear end to get that tire in?

Oooh, Marin fatbike. Like!

Blimey even I can’t find the thread!

I had to chop up the rear triangle to off set the dropouts and add sections to create clearance (length and width) for the tire. It does actually work though it’s slightly borderline in terms of the chain rubbing the tyre (still on 68mm bb, I stuck a 88mm DH crankset in there with spacers) and the BB height.

Looks like you’ve blown a seal

don’t know about the seal but al’s clearly quite pleased with the result.

Here’s the original thread:

http://singletrackworld.com/forum/topic/full-suss-fat-bike-flame-athon-pt2

Just as a comparison for an extreme opposite of both weather and bike, I got out for a rare ‘after work’ ride yesterday evening, first time off-road on my cross bike…it was lovely. Just shorts and jersey, didn’t even need a windproof :p Just a few looming rain clouds to encourage me to keep pedalling…

A bit slow in getting to this, but this was yesterday, a few miles from the Pentlands. Great fun! (edit…IMG links might be broken?)

Al, your bike clearly has gears and 26 inch rims – what’s with the beard ?

scaredypants – Member

Al, your bike clearly has gears and 26 inch rims – what’s with the beard ?

It’s a Marin…

ah, yes, good point mr woppit 😳

carry on Al, well done

Looks like you’ve blown a seal.

Or a penguin 😆

Liking the Fat Marin, something different is always good 😀

A Yeti riding a Marin.

Is the 2″ higher BB due to the fat tyre or the alterations made?

Do you have further plans to re-re-jig the rear to lower the BB or is it ride it like you stole it time?

Looks like you’ve blown a seal.

:reported for creation of offensive mental images:

Rusty the BB height is due to the 2″ extra on the tyres only. As I said I may try lowering the BB but that would **** up the suspension…

…unless I chopped the down tube and seat tube and bridged the gap with some CF 😛

Al – I like what you have done with the Marin. I’d love to fat a full suspension bike, but most are aluminum so would need heat treating after welding, which is probably not realistic.

Al could you not drop the BB by re-jigging the rear triangle ?

What I am thinking is at the point where you have added the sections to widen the rear triangle you could change the angle towards the rear hub very slightly to drop the BB height.

I think this would also slacken the seat tube and head tube which may not be advantageous but not knowing the angles it is impossible to comment.

Rusty I could but I’d need to lengthen the chainstays to keep the clearance up and it would also slacken the bike hugely:

2″ BB drop = ~3″ hub rise = ~4 degrees slacker.

The HA is already ~67 degrees, if only I could shorten the head tube!

Ah right, not knowing the angles and stuff i didn’t know if it would work, i guess not.

Could you not find a half way house by adjusting the rear end a little and dropping the tyre pressures a bit ❓ 😉 ❓