Opps , hit something & it got sent unfinished
Patrick
Here are the tire pressures for the 15% tire drop method for the weights
and widths you specified:
175 Lb + 20 lb = 195 lb total weight 45%/55% distribution
23 27 29
F 89 69 61
R 112 86 75
175 Lb + 25 lb = 200 lb total weight 45%/55% distribution
23 27 29
F 92 71 62
R 114 88 77
Can't do 51mm widths
John Hawrylak
Woodstown
On Sunday, September 11, 2016 at 5:26:41 PM UTC-4, Patrick Moore wrote:
> 175 rider + bike at sub 20 and another sub 25. Elk Pass tires, measuring
> ~27 and ~29 respectively; run at ~65-70. I don't sweat digits f/r, but I do
> use the pinch test to get front a wee bit softer. In fact, were it not for
> the gauge on the pump, which for all I know may be defective, I'd just go
> by feel -- indeed, I do, since the reported pressures are chosen because
> they feel right to my fingers.
>
> When I used 23 mm tires on these bikes, I'd pump those to~80/85 or 80/90.
>
> 51 mm Furious Freds with at least half miles on sandy dirt: ~18/22 or
> 20/25. I'm pretty sure that the pump gauge reads too high, and I
> occasionally check with my low pressure gauge.
>
> I remember long ago, circa 1972, learning to pump my Raleigh Sprite's
> cheap 27 X 1 1/4 tires to the 70 psi marked on the sidewall. What a
> difference! Higher pressures *certainly do* improve rolling, at least the
> feel (and no, not any goddam buzz; they were easier to pedal and went
> faster) compared to too soft -- I've verified this any number of times with
> cheap tires with heavy sidewalls. The roads in question ranged from super
> smooth to normally worn, nothing terrible or chipseal.
>
> Question: just went out to check tires with gauges and found that the high
> pressure one -- to 160 psi; steel and brass -- doesn't register anything
> despite an open valve core and road pressures as above. Does anyone have
> any idea about what might be wrong with it, and how to fix it?
>
> Does anyone have a road presta gauge, reasonably accurate, to trade for
> something or sell for a few bucks?
>
> Thanks.
>
>
>
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