Home-made 'sub compact' 42/30
11-22-17, 01:40 PM
#26
Bad example
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Who needs a middle gear? Here is my old steel crank plus Spécialités TA ring. Works well in the Seattle hills.
11-22-17, 01:53 PM
#27
Thrifty Bill
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I tend to nab chainrings off vintage mountain bike triples and "create" a small road double out of them. I've done it on several bikes.
I have both a shortage of motor and abundance of hills. The combination makes pushing a typical vintage double difficult!
All of my bikes are vintage, newest in the keeper fleet is 1988, oldest is 1973.
I have both a shortage of motor and abundance of hills. The combination makes pushing a typical vintage double difficult!
All of my bikes are vintage, newest in the keeper fleet is 1988, oldest is 1973.
11-24-17, 06:46 PM
#28
Partially Sane.
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Interesting thread here. I thought about doing this before, a few times even, but it just makes more sense to me, to leave all 3 chainrings on. Better to have it and not need it, right? 😋 Or, you might find out, that the largest chainring really is useful at times, like riding DOWN a mountain. 😉😁
11-25-17, 08:40 PM
#29
Senior Member
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I would like to eventually get something with a narrower q-factor though.
12-25-17, 02:01 PM
#30
Pokemon Master
I have a 26/42 on my 920 with an 11-36 cassette. Literally the best of everything. It can pull my trailer with 80lbs of groceries all over Fayetteville, AR or it can jump off the greenway and keep up with traffic around town. I have triples on everything else except my pure toad bike and they work great, too.
12-25-17, 02:09 PM
#31
Senior Member
I'm building a town bike for a friend who found his previous bike massively over-geared, it was a 53/42 triple minus the granny inner ring.
I had an old FSA granny ring in the parts bin which bolted on, the old 53 chainring lost an argument with an angle grinder and is now five unusually-shaped washers (!), the 30 ring is back on and the old double FD seems to work alright with this hybrid setup.
Photos to follow, if anyone is interested.
TL;DR: don't waste your money on a 'sub-compact', improvise.
I had an old FSA granny ring in the parts bin which bolted on, the old 53 chainring lost an argument with an angle grinder and is now five unusually-shaped washers (!), the 30 ring is back on and the old double FD seems to work alright with this hybrid setup.
Photos to follow, if anyone is interested.
TL;DR: don't waste your money on a 'sub-compact', improvise.
12-26-17, 01:37 PM
#32
The Drive Side is Within
One can buy single chain-ring length bolts, but I like the use of an old outer chainring -- it's a good look.
__________________
The bicycle, the bicycle surely, should always be the vehicle of novelists and poets. Christopher Morley
The bicycle, the bicycle surely, should always be the vehicle of novelists and poets. Christopher Morley
12-26-17, 04:15 PM
#33
working on my sandal tan
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