Will a double crank work on a triple setup at all?

Jens Kurt HEYCKE said:

I'm going to Maui, where the only rental bikes seem to be
triples, and would like to put my SRM double crank on
a bike. Will it work at all?

Why? It's a Rental. It's Vacation. Maui's got a mountain, too. You
might need that small ring.

Technical considerations:

It won't line up the same. Not without a screwdriver and some patience.

Stripping the threads in the original crank with the removal tool might
be bad. Cracking the original crank when you put it back on might be
bad too.

You can always pretend the small ring doesn't exist. No tools required.

It ain't your bike.

--
BMO - Former weekend wrench at a shop that used to rent bikes, when said
bikes came back all muddy and the customers asked where the East Bay
Bike Path was.

In article <[email hidden]>,

Jens Kurt HEYCKE jkheycke @at@ yahoo.com said:

I'm guessing the wider BB would put the 53/39 chainrings in
the same place and the only risk would be dropping the chain
by shifting to the non-existent granny ring.

You can set the derailleur low limit screw to lock out the granny gear.

Why bother replacing the crankset anyway? Weight difference is minimal
and you have to worry about whether or not your crankset is compatible
with their bottom bracket.

C said:

In article <[email hidden]>,

Jens Kurt HEYCKE jkheycke @at@ yahoo.com said:

I'm guessing the wider BB would put the 53/39 chainrings in
the same place and the only risk would be dropping the chain
by shifting to the non-existent granny ring.

You can set the derailleur low limit screw to lock out the granny gear.

Why bother replacing the crankset anyway? Weight difference is minimal
and you have to worry about whether or not your crankset is compatible
with their bottom bracket.

The point would be to measure power output.
See <http://www.srm.de/mambo/index.php>.

--
Tom Sherman - Near Rock Island

"C" <[email hidden]> wrote in message news:[email hidden]...

Quoted message said:

In article <[email hidden]>,

Jens Kurt HEYCKE jkheycke @at@ yahoo.com said:

I'm guessing the wider BB would put the 53/39 chainrings in
the same place and the only risk would be dropping the chain
by shifting to the non-existent granny ring.

You can set the derailleur low limit screw to lock out the granny gear.

Why bother replacing the crankset anyway? Weight difference is minimal
and you have to worry about whether or not your crankset is compatible
with their bottom bracket.

I'm not concerned about weight. I want the power readings from
the SRM cranks.

When you're on a power-based training plan it's just nice to keep
it going instead of having 3 weeks (I'm going other places too) of
just heart-rate based training.

--j

Jens Kurt HEYCKE said:

I'm not concerned about weight. I want the power readings from
the SRM cranks.

When you're on a power-based training plan it's just nice to keep
it going instead of having 3 weeks (I'm going other places too) of
just heart-rate based training.

If it's that critical, then ship your own bike.

You're not going to get the same results riding something else. Even if
you change the crankset, it's not going to be the same weight, tires,
wheel size, flex, cassette, chain, etc.

Indeed, if you think you need to change the crankset, you then also need
to change the cassette to get the same gear ranges. I doubt the
cassette is the same on the rental. And now that you've changed the
cassette, you're going to have to put a chain on it, because that bad
boy is going to skip like there's no tomorrow if you use the rental's chain.

How many tools did you say you're going to take with you to Maui?

That's not even considering the cost of daily rental. Indeed, rentals
on the East Side of Providence were $35/day *two years ago*. You're
going to be gone for 3 weeks? In Hawaii? Where everything, even the
bottled water, is expensive? Do the math and ship your own bike.

To top it off, the rental is not yours to mess with. Really.

--
BMO

On Mon, 24 Jan 2005 14:05:38 -0800, "Jens Kurt HEYCKE" <jkheycke @at@

yahoo.com may have said:

I'm going to Maui, where the only rental bikes seem to be
triples, and would like to put my SRM double crank on
a bike. Will it work at all?

Are you sure they're using the same spacing and type of BB that you
do? If you were a shop owner, would you want your renters to be
taking the bike apart?

Quoted message said:

I'm guessing the wider BB would put the 53/39 chainrings in
the same place and the only risk would be dropping the chain
by shifting to the non-existent granny ring.

You've never been to the islands, I take it...

I'd leave the crank alone. You may need that triple's granny if you
get on the steeper roads. Oh, and if you try the Hana road, make sure
that your life insurance is paid up. People like me drive it.

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

On Mon, 24 Jan 2005 15:22:58 -0800, "Jens Kurt HEYCKE" <jkheycke @at@

yahoo.com may have said:

"C" <[email hidden]> wrote in message news:[email hidden]...

Quoted message said:

In article <[email hidden]>,

Jens Kurt HEYCKE jkheycke @at@ yahoo.com said:

I'm guessing the wider BB would put the 53/39 chainrings in
the same place and the only risk would be dropping the chain
by shifting to the non-existent granny ring.

You can set the derailleur low limit screw to lock out the granny gear.

Why bother replacing the crankset anyway? Weight difference is minimal
and you have to worry about whether or not your crankset is compatible
with their bottom bracket.

I'm not concerned about weight. I want the power readings from
the SRM cranks.

When you're on a power-based training plan it's just nice to keep
it going instead of having 3 weeks (I'm going other places too) of
just heart-rate based training.

Contact the rental place and ask them if they would accomodate your
request that the rental bike have your cranks installed. That way,
there are no surprises possible that might result in large penalties.

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

Werehatrack said:

Contact the rental place and ask them if they would accomodate your
request that the rental bike have your cranks installed. That way,
there are no surprises possible that might result in large penalties.

If I was still working at the shop on Thayer Street, I'd say no, from a
liability and PITA standpoint. It's just not worth it and there are
always other people to rent to. It's HI. There are touristas galore.
First Come First Served, and all that. It's like renting bicycles in
Newport RI: there's a limited supply among the various bike shops and
they *always* rent every one of them on bright sunny days, of which Maui
has plenty.

If he's got the scratch to travel to HI and rent a bike for 3 weeks,
he's got the scratch to ship his bike to HI at lower cost than renting.
He's looking at a bill of $630 to $1050 ($30 to $50/day)in rental fees
alone. Nevermind the support fees from the bike shop mounting *his*
crank on *their* bike, and the staff gritting their teeth every day
hoping that he doesn't damage the crank on a ride and blame the shop.
That SRM crankset isn't cheap. Not by a long shot (go look for yourself)

He can call around, but I'm sure that he'll be wasting his time and
money on long distance phone charges.

Just my $.02

--
BMO

----- Original Message -----
From: "Werehatrack" <[email hidden]>
Newsgroups: rec.bicycles.tech
Sent: Monday, January 24, 2005 7:12 PM
Subject: Re: Will a double crank work on a triple setup at all?

Quoted message said:

On Mon, 24 Jan 2005 14:05:38 -0800, "Jens Kurt HEYCKE" <jkheycke @at@

yahoo.com may have said:

I'm going to Maui, where the only rental bikes seem to be
triples, and would like to put my SRM double crank on
a bike. Will it work at all?

Are you sure they're using the same spacing and type of BB that you
do? If you were a shop owner, would you want your renters to be
taking the bike apart?

You and Owl are right. I would, of course, have them do it. I just
wanted to establish whether it's really worth trying. I don't believe
in abusing rental bikes (or cars) as some do.

Quoted message said:

Quoted message said:

I'm guessing the wider BB would put the 53/39 chainrings in
the same place and the only risk would be dropping the chain
by shifting to the non-existent granny ring.

You've never been to the islands, I take it...

I'd leave the crank alone. You may need that triple's granny if you
get on the steeper roads. Oh, and if you try the Hana road, make sure
that your life insurance is paid up. People like me drive it.

On the contrary, my parents live in Honolulu. I've ridden in the islands
a bit. The route I take on single-lane roads around the
northwest-end of Maui looks completely flat on the map but actually
has about 3000 feet of climbing, most of it in little 1/4 mile 10-15%
stretches.
It's OK. I mash sinfully.

thanks, J

"Boyle M. Owl" <[email hidden]> wrote in message
news:FmjJd.51047$Tf5.12017@lakeread03...

Quoted message said:

Werehatrack said:

Contact the rental place and ask them if they would accomodate your
request that the rental bike have your cranks installed. That way,
there are no surprises possible that might result in large penalties.

If I was still working at the shop on Thayer Street, I'd say no, from a
liability and PITA standpoint. It's just not worth it and there are
always other people to rent to. It's HI. There are touristas galore.
First Come First Served, and all that. It's like renting bicycles in
Newport RI: there's a limited supply among the various bike shops and
they *always* rent every one of them on bright sunny days, of which Maui
has plenty.

If he's got the scratch to travel to HI and rent a bike for 3 weeks,
he's got the scratch to ship his bike to HI at lower cost than renting.
He's looking at a bill of $630 to $1050 ($30 to $50/day)in rental fees

Actually, I'm only renting for a few days. The crank is going on my
Dad's spare bike in Honolulu the rest of the time. I'm surprised that
a shop would be that daunted. It's just one crank arm. I swap it
between my road and TT bike all the time. But it sounds like you
were in the biz and know how a shop would view it.

thanks

--j

Jens Kurt HEYCKE said:

You and Owl are right. I would, of course, have them do it. I just
wanted to establish whether it's really worth trying. I don't believe
in abusing rental bikes (or cars) as some do.

But that's exactly what rental shops see every day. _You_ might be
polite and all that, but people take hybrids (what was popular when I
was doing the renting) and try to ride them down gullies. There's only
so much after-ride inspection you can do before you hand the customer
his credit card recipt back without keeping the customer there for 30
minutes to make sure he (it's always the guys that do this) hadn't
cracked the frame.

I'm sorry if I sounded blunt, but there are hundreds of reasons
(memories) for what I've said.

Unless you _know_ someone at a bike shop in HI that can take special
care of you and _knows_ you too, I don't see any way around simply
shipping your steel steed air freight to HI, because if you do find a
random good shop that will do what you ask, it won't be cheap.

--
BMO

Jens Kurt HEYCKE said:

Actually, I'm only renting for a few days.

Well, it won't be so expensive then. I don't know about the crankset
bit, though.

Quoted message said:

The crank is going on my
Dad's spare bike in Honolulu the rest of the time. I'm surprised that
a shop would be that daunted. It's just one crank arm.

Yeah, but look at the price! Did you buy the low(!) end or high end
"Wissenschaft" model?

And I thought a Rolhoff hub was expensive.

Quoted message said:

I swap it
between my road and TT bike all the time. But it sounds like you
were in the biz and know how a shop would view it.

I was in the biz on weekends, as a diversion from my real job. The shop
was more of a social place than anything, and then someone quit and I
picked up some of the slack. It was...educational.

--
BMO

On Mon, 24 Jan 2005 19:52:08 -0800, "Jens Kurt HEYCKE" <jkheycke @at@

yahoo.com may have said:

On the contrary, my parents live in Honolulu.

In that case, there is reason to presume that you'll be visiting the
island again; this implies that a different tactic may save you both
time and money in the long run. Pick up a used bike on Maui and leave
it with your parents when you go, assuming they have room to stash it.
If they don't, then have them sell it for you; it's probable that
you'll get most of the investment back, with little total overall
outlay.

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

quote='Boyle M. Owl'Jens Kurt HEYCKE said:

You and Owl are right. I would, of course, have them do it. I just
wanted to establish whether it's really worth trying. I don't believe
in abusing rental bikes (or cars) as some do.

But that's exactly what rental shops see every day. _You_ might be
polite and all that, but people take hybrids (what was popular when I
was doing the renting) and try to ride them down gullies. There's only
so much after-ride inspection you can do before you hand the customer
his credit card recipt back without keeping the customer there for 30
minutes to make sure he (it's always the guys that do this) hadn't
cracked the frame.

I'm sorry if I sounded blunt, but there are hundreds of reasons
(memories) for what I've said.

Unless you _know_ someone at a bike shop in HI that can take special
care of you and _knows_ you too, I don't see any way around simply
shipping your steel steed air freight to HI, because if you do find a
random good shop that will do what you ask, it won't be cheap.

--
BMO[/QUOTE]

If your parents are there, seems you may be there often. Can you justify picking up a training bike you keep there and let your parents/siblings/etc. use otherwise?

Werehatrack said:

I'd leave the crank alone. You may need that triple's granny if you
get on the steeper roads. Oh, and if you try the Hana road, make sure
that your life insurance is paid up. People like me drive it.

I'm going to to second the advice about the Hana road - it's really, really
narrow, has a lot of blind turns, and not everyone drives slowly.

The same applies for a lot of the road that goes from
Lahaina/Kaanapali to Kahului around the northern coast of the west Maui.
Over there we even met a driver that was running away from four police cars
around the blind turns - if we hadn't stopped for photographs a minute
earlier, we would've surely crashed.

--
J. Sakari Salonen / [email hidden]

"J Sakari Salonen" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Werehatrack said:

I'd leave the crank alone. You may need that triple's granny if you
get on the steeper roads. Oh, and if you try the Hana road, make sure
that your life insurance is paid up. People like me drive it.

I'm going to to second the advice about the Hana road - it's really,

really

Quoted message said:

narrow, has a lot of blind turns, and not everyone drives slowly.

I would not dream of riding the Hana road, unless
traffic were blocked.

Quoted message said:

The same applies for a lot of the road that goes from
Lahaina/Kaanapali to Kahului around the northern coast of the west Maui.
Over there we even met a driver that was running away from four police

cars

Quoted message said:

around the blind turns - if we hadn't stopped for photographs a minute
earlier, we would've surely crashed.

I've always been fine on that road. In fact, I've enjoyed periods over an
hour where I haven't seen a car in either direction. Nearly hit a cow
once, though.

--j

Jens Kurt HEYCKE jkheycke @at@ yahoo.com said:

"J Sakari Salonen" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Werehatrack said:

I'd leave the crank alone. You may need that triple's granny if you
get on the steeper roads. Oh, and if you try the Hana road, make sure
that your life insurance is paid up. People like me drive it.

I'm going to to second the advice about the Hana road - it's really,

really

Quoted message said:

narrow, has a lot of blind turns, and not everyone drives slowly.

Quoted message said:

I would not dream of riding the Hana road, unless
traffic were blocked.

Quoted message said:

Quoted message said:

The same applies for a lot of the road that goes from
Lahaina/Kaanapali to Kahului around the northern coast of the west Maui.
Over there we even met a driver that was running away from four police

cars

Quoted message said:

around the blind turns - if we hadn't stopped for photographs a minute
earlier, we would've surely crashed.

Quoted message said:

I've always been fine on that road. In fact, I've enjoyed periods over an
hour where I haven't seen a car in either direction. Nearly hit a cow
once, though.

In fact, we encountered some local fauna as well, on that road:

http://www.helsinki.fi/~ssalonen/pics/Maui/September7/Stubborn_animal.jpg

--
J. Sakari Salonen / [email hidden]

J Sakari Salonen said:

In fact, we encountered some local fauna as well, on that road:

http://www.helsinki.fi/~ssalonen/pics/Maui/September7/Stubborn_animal.jpg

What an ass! 😉

--
Tom Sherman - Earth

"J Sakari Salonen" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Quoted message said:

I've always been fine on that road. In fact, I've enjoyed periods over

an

Quoted message said:

Quoted message said:

hour where I haven't seen a car in either direction. Nearly hit a cow
once, though.

In fact, we encountered some local fauna as well, on that road:

http://www.helsinki.fi/~ssalonen/pics/Maui/September7/Stubborn_animal.jpg

--
J. Sakari Salonen / [email hidden]

Neat! I'm pretty sure I know the exact spot where that was taken.
It's a truly epic ride, with the donkeys, cows, and wild pigs on one side
and
spouting whales on the other. I used to live at one end of the
legendary flume trail (http://www.theflumetrail.com/), but I actully
like the Maui ride better.

-jens