What speed do you spin out at on the flat using 32:16?
RC
Bike Forum
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SS 32:16 What speed do you spin out at?
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Posted 1 year ago #
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About 30mph, that's in a very short burst though.
Posted 1 year ago # -
About 15-16mph before it just gets silly. 13mph ish is ok at a reasonable cadence,
Posted 1 year ago # -
About 30mph
thats a cadence of 194
Posted 1 year ago # -
32:16 = 2:1
wheel diameter = 680mm
1 pedal rev = 2 wheel revs = 2 x pi x 0.68m = 4.27m travelled.
120rpm* = 120 x 4.27 = 513metres/min
0.513km x 60 = 31kph.
(*assumed max cadence...)
Posted 1 year ago # -
depends how big your wheels are
(written before the post above)
Posted 1 year ago # -
72mph.
Posted 1 year ago # -
Good one ahwhiles: but wheel diameter 0.68m? I make it ~30" (0.76) from 26"+2"+2", assuming 2 inch tyres.
I have 32:18 ratio = 0.78
0.78 (ratio) * 2 (revs) * 3.14 {pi) * 0.76 (diameter) * 120 (cadence) * 60 (to hours) * 0.001 (to km) * 0.625 (to miles) = ~16.75mph
Faster than I expected.
Posted 1 year ago # -
BL the 26" is the nominal OD, the bead diameter is 559mm.
Posted 1 year ago # -
30mph would be some going!
On my 48x17 set up on the road bike i cant get it over 36mph spinning like an idiot on the downhills on my commute.
I have achieved 39 on a mountain descent tucked down as much as i could... but I certainly wasn't doing any pedalling on that descent.
Posted 1 year ago # -
phil.w - Member
About 30mph
thats a cadence of 19429" wheels help a bit, absolute max is about 180rpm, years of riding fixed and ss plus naturally having a high proportion of fast twitch muscles helps a lot.
Posted 1 year ago # -
Shirley most could manage 150rpm? = 23mph?
Posted 1 year ago # -
then do your own sodding maths.
X
Posted 1 year ago # -
Shirley most could manage 150rpm
Probably, but that kind of max that isn't very sustainable past what? a couple of minutes at best?
At 2:1, on 'flat' off-road, I can sustain about 14/15mph
Posted 1 year ago # -
Ahah! this would explain the mtber I saw on my commute today pedalling like an idiot and going very slowly!
Thought it was a BMX from a distancePosted 1 year ago # -
Scienceofficer - Member
Shirley most could manage 150rpm
Probably, but that kind of max that isn't very sustainable past what? a couple of minutes at best?At 2:1, on 'flat' off-road, I can sustain about 14/15mph
Few seconds in my case, but as the question asked 'spin out at' I assumed he meant 'what speed are you going when you can't possibly spin any faster'?
Posted 1 year ago # -
My experience is pretty similar as above. I would 14mph is fine to maintain on the flat along with some freewheeling then egg whisks lol !
Posted 1 year ago # -
slightly misses the point.
Posted 1 year ago # -
nickc - Member
slightly misses the point.
Which point ?
Posted 1 year ago # -
*willy waving* I can spin at over 200rpm for 22sec at rollapaluza and there are plenty quicker than me.
30mph is definitely possible in a sprint with 26" wheels. Again, just over 15 is a comfy long term max
Posted 1 year ago # -
Nice. After willy waving and all that spinning, I imagine you apply a lot of this
Posted 1 year ago # -
I reckon my sustainable average on 32:16 is 15/16mph. Don't have a speedo on the ss, but the other week I bumped into a roadie I know on sandbanks ferry and we had a similar conversation to this thread. Rode from the ferry to the turn before the big hill up to bournemouth, so 5 mins or so, whilst I was out of breath but talking. roadie reckons his speedo was 16 all the way.
Posted 1 year ago # -
Anything faster than 12mph feels too spinny to me.
Posted 1 year ago # -
Im glad you lot have only got a single gear ratio to talk about, or things could get really dull
Posted 1 year ago # -
16mph on the flat...30 downhill.... but i am a bit 'bigger' now... :D.Junior road-racing in the good old old days was helpful as they restricted you to 52-15 (93")- helped me then as the fastest peddler won!!
Posted 1 year ago # -
At a cadence that feels insane on our night run along the disused railway for a couple of miles, as all my (geared) mates go hell for leather just to see if they can kill me!
Posted 1 year ago # -
I can ride forever* at about 20kmph on my 32:17.
*Well, ages anyway.
Posted 1 year ago #
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