| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 2592.1 | freewheel? | MIMS::HOOD_R | | Wed Jun 09 1993 13:22 | 28 |
|
Bob,
>A friend has a dept. store bike. Sometimes when he is riding up a hill
>with his 20 month old daughter in the bike seat, his pedals slip about 1/8
>turn as if the chain momentarily slipped off and then back on again. This
>only happens when under a heavy load.
Is this a multispeed bike? Back in one of the "freewheel" notes about
a year an a half ago, I had a similar problem with an old freewheel.
I did not open it up, but the ratchet mechanism inside seemed
to stick and NOT engage sometimes. It especially did this under heavy
load, and when it happened, would crank forward with no resistance
for some portion of a turn of the crank. The first couple of times it
happened, I thought that I was imagining things. It finally stuck in
this mode where I could turn it forward or backward and it would not
engage at all! Anyway, it was an old freewheel and John Ellis suggested
I oil it good to get the ratchet mechanism to slide/engage better.
It worked for a little while, but I eventually replaced it.
Just a thought
doug
|
| 2592.2 | | MIMS::HOOD_R | | Wed Jun 09 1993 13:33 | 14 |
|
Another thought.... I once lost 4 out of 5 chainring bolts on the
small chainring on a triple crank. The result is that when I would
shift to the small chainring, it would pivot back and forth on the
remaining bolt as I pedaled. I only noticed this under "heavy load"
because that is the only time a shifted into the small chainring.
When it pivoted, it would feel like "the chain momentarily slipped off
and then back on again". Needless to say, I fixed this quickly, and
now I regulary check the chainring bolts.
doug
|
| 2592.3 | | ROWLET::AINSLEY | Less than 150 kts. is TOO slow! | Wed Jun 09 1993 13:36 | 10 |
| re: .1
Yep. It's a multispeed bike and what you are describing sounds like what was
described to me.
When you say you oiled it, do you mean more than degreasing the chain, chain
rings, and freewheel cogs, and relubing the chain and running it thru all the
gears to lube the freewheel cogs?
Bob
|
| 2592.4 | | MIMS::HOOD_R | | Wed Jun 09 1993 13:59 | 13 |
|
See the freewheel note(s). As described there: Turn the freewheel while
holding the wheel still, and observe that there is a "slit"
between the turning portion of the freewheel and the stationary
portion. Get oil into this slit by whatever means available until
it starts to leak out the backside of the freewheel. That's about
as good as I can describe it.
doug
|
| 2592.5 | | ISLNDS::SCHWABE | | Wed Jun 09 1993 15:05 | 4 |
|
How old is the bike?
I've seen worn chains and/or worn cogs cause the same symptoms.
|
| 2592.6 | | ROWLET::AINSLEY | Less than 150 kts. is TOO slow! | Wed Jun 09 1993 15:07 | 1 |
| The bike is less than 1 year old.
|
| 2592.7 | Chain link sticking? | ATIS::BODGE | Andy Bodge | Wed Jun 09 1993 16:42 | 1 |
| A sticky or rusted link in the chain might do this.
|
| 2592.8 | | NEWPRT::NEWELL_JO | Don't wind your toys too tight | Thu Jun 10 1993 19:05 | 19 |
| John Lee Ellis just spent five days with my family out here in
California looking for a job. I had the complete embarrassment
of having to admit to him (it would have been difficult to hide)
that I too owned a ~$115.00 'store' bike.
I told him I didn't ride it much (it's just a little over a year
old) because of the same problem the base noter described. I'd
jump on the pedal to get up an incline and...oops, a slight slip
in the pedal. Enough to scare the bejeezus out of me a couple
times and once I even slipped forward and smashed my chest against
the handle bars. John bit his lip and made no snide comments but
didn't offer any suggestions either. I think it was way out of
(read: below) his league :^)
I will never...never buy another cheap bike at a department store.
I'd like to save myself the embarrassment all around, thank you very
much.
Jodi-
|