"SONIC boom" (aka Yokel-Motion 2.0)

Thanks: it has a certain understated charm, no?

Being my first 50, I'm deffo on for a PB!

Cheers and likewise.

Opted for 56x16, which equates to 98".

I did get a BTA mount off Hippy, but my race partner is using it: she's on form, quicker than me and has a good shout of bagging the course record.

#takingonefortheteam

No other options? Doing a 50 without anything is very 1960s...

I have a BTA(rse) mount, but no cages.

Blagged a cage and zip-tied it BTA: worked fine, but could do with something to stop the extensions getting pulled together.

Went much better than predicted and expected: short crank magic or just "one of those days"?

Either way, one thing is confirmed and another likely: that saddle must go and I think I'm too low at the front.

Being too low was suggested above and having raised the seatpost 10mm on account of the cranks, I'm pretty sure of it.

Likely that will mean some Vuka clips and 50mm risers, assuming a pair of Ventus etc doesn't land in my lap in the meantime.

What's wrong with the saddle?
I find my SMP very comfy in an aero position.

I reckon I would too, but this ain't no SMP :(

As far as I can see, the only thing that qualifies it as a tri/tt saddle, is the addition of the rubber grips near the nose.

And it says "tri" on it :)

Either way, you have to "dress to the right" (or left), which is no place to be for 50 miles (barely 10 for that matter).

I photobombed a shoot for a review of the the new Audi.

#topgear

have you tried with the pads a bit wider? It may allow you to roll your shoulders more, so that they become narrower (it works for me, anyway)

I hadn't considered that, I'll give it a whirl!

I have been making an effort to roll my shoulders, but that was after I brought the bars together...

After using a BTA bottle for the first time on Sunday, I wouldn't mind moving the bars apart a little so I'm not touching the bottle (bit clammy), but had assumed this would have a negative aero effect.

Wider arms not necessarily slower. Depends what it does to your shoulders.

Did you sort the stem slippage shim issue? I don't think I need the steel shim I have so I could post it to you? Bike looks purposeful. Noice.

Opted for 56x16, which equates to 98"

On a 29er maybe :-)

(56/16)×26.4"=92.4"

Thanks for the offer, but I did get another shim which seems to have sorted it.

Purposeful is a good description: there's nothing superfluous on it (rider excepted) :)

Presumably that's referring to same gain ratio as 98"on 170mm?

Now I'm confused.

This gear calculator lists "700c/29er (622mm)" under wheel size options...

Yup: 56x16 on 160mm, gives the same gain ratio as 56x15 on 170mm, which is 98".

Diameter of a 700c 19mm track tub is significantly different to a 2.5" 29" tyre. 56x16 on a 2.2" 29er would be around 98"

Use Sheldon's

This gear calculator lists "700c/29er (622mm" under wheel size options...

You have to select the tyre size as well to get the correct rolling diameter.

Yeah: 23mm.

I get the same answer with either calc (both using 23-622):

• (56x16) x 160mm = 7.3GR
  
• (56x15) x 170mm = 7.3GR or 98.1"
  
  

Still confused.

Still confused

Which bit is still confusing you?

Ah! I wasn't clear in my OP.

When I wrote "Opted for 56x16, which equates to 98".", I meant "Opted for 56x16 [on 160mm], which equates to 98" [56x15 on 170mm].

Really, I had no idea there was a photographer!

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32 spoke Archetype >>>>>>

3 spoke HED <<<<<<

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Instrument of torture >>>>>>

Italian gooch-moccasin<<<<<<

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