Suntour-->Shimano???

Suntour-->Shimano???

Post by Gene Fen » Sun, 30 Jun 1996 04:00:00


Hi all,

I have a Raleigh Bike with all Suntour parts.  I'd like to ask all those
of you who know more about bikes than me (English translation: 99% of the
world population) some questions on coverting Suntour parts to Shimano.

My bike has a Suntour Accushift 6000 rear derailleur and Suntour friction
shifters.  It also uses freewheels, not a cassette.  I'm thinking about
getting a grip shifter and some Shimano rear derailleur.  A friend of mine
told me to do that, I would have to have a cassette that was compatible
with the Shimano derailleur and shifter.  And because the cassette would
be compatible with the hub, I would have to replace the rear hub as well.
Was he right?  Can I just replace the derailleur and shifter only and
still get some satisfactory result?  And can I put a new cassette onto my
hub instead of replacing both of them?  Thank you very much.  Please send
your comment to the above email address.

+-------------------------------+-------------------------------+
|Gene Feng                      |(520) 621-7997                 |
|Optical Sciences Center        |Nugent Building, Room 5        |
|University of Arizona          |University of Arizona          |

+-------------------------------+-------------------------------+

 
 
 

Suntour-->Shimano???

Post by Chris Cullo » Mon, 01 Jul 1996 04:00:00

Quote:

> Hi all,

> I have a Raleigh Bike with all Suntour parts.  I'd like to ask all those
> of you who know more about bikes than me (English translation: 99% of the
> world population) some questions on coverting Suntour parts to Shimano.

> My bike has a Suntour Accushift 6000 rear derailleur and Suntour friction
> shifters.  It also uses freewheels, not a cassette.  I'm thinking about
> getting a grip shifter and some Shimano rear derailleur.  A friend of mine
> told me to do that, I would have to have a cassette that was compatible
> with the Shimano derailleur and shifter.  And because the cassette would
> be compatible with the hub, I would have to replace the rear hub as well.
> Was he right?  Can I just replace the derailleur and shifter only and
> still get some satisfactory result?  And can I put a new cassette onto my
> hub instead of replacing both of them?  Thank you very much.  Please send
> your comment to the above email address.

> +-------------------------------+-------------------------------+
> |Gene Feng                      |(520) 621-7997                 |
> |Optical Sciences Center        |Nugent Building, Room 5        |
> |University of Arizona          |University of Arizona          |

> +-------------------------------+-------------------------------+Your friend is right. The spacing between cogs in a Shimano drive train

is different from the spacing in Suntour. This will be an expensive
change you are making to your bicycle, but I think you will be very
satisfied with the results. Check on the cost of buying a factory built
rear whel with the hub that you need, it may be about the same as
rebuilding your wheel with a new hub and you will get a new rim as well.

 
 
 

Suntour-->Shimano???

Post by Vincent Che » Tue, 02 Jul 1996 04:00:00

+ Your friend is right. The spacing between cogs in a Shimano drive train
: is different from the spacing in Suntour. This will be an expensive

Not with 6,8 speed.  6 speed is pretty much the same.  8 speed...Suntour
used Shimano's spacing before they stopped exporting to North America, so
it should work...you can always get a Sachs freewheel.

: change you are making to your bicycle, but I think you will be very
: satisfied with the results. Check on the cost of buying a factory built
: rear whel with the hub that you need, it may be about the same as
: rebuilding your wheel with a new hub and you will get a new rim as well.

Why get a new wheel when a new freewheel will do?

Vince

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Suntour-->Shimano???

Post by Vincent Che » Tue, 02 Jul 1996 04:00:00

: My bike has a Suntour Accushift 6000 rear derailleur and Suntour friction
: shifters.  It also uses freewheels, not a cassette.  I'm thinking about
: getting a grip shifter and some Shimano rear derailleur.  A friend of mine
: told me to do that, I would have to have a cassette that was compatible
: with the Shimano derailleur and shifter.  And because the cassette would
: be compatible with the hub, I would have to replace the rear hub as well.
: Was he right?

No, he's not right.  while most people use cassette with Shimano
drivetrain, you WILL be able to find a lot of freewheel that are 6, 7 or 8
speed.  They are made by Sachs, and they are of very high quality.  I
perfer the shifting of these freewheels over HG or IG.

: Can I just replace the derailleur and shifter only and
: still get some satisfactory result?  

Depends, 6 speed, yes.  7 and 8 speed, maybe.  If you are going to spend
the money, you might as well:
1:get 8 speed shifters
2:get 8 speed freewheel
3:get axle respaced to 130mm/135mm(road/mtb)
4:redish the wheel
5:spread the frame.

Note:  You  DON'T need a new rear derailleur.  If you are that keen on
having a floating top pulley, just add an extra washer to the roller.

Vince
--
--
***************************************************************************
Vincent Cheng         University Of Alberta         1st year Engineering

Creative Web Catchers HTML Designer*http://www.ualberta.ca/~mkozak/cwc.htm
Maintainer for Mountain Biking FAQ*http://www.ualberta.ca/~vccheng/faq.html
Edmonton Bicycle Commuters Society*http://www.ualberta.ca/~vccheng/ebc.html
Columnist-Gearhead MTB e-zine*http://www.gearhead.com/
Columnist-Edmonton Oilers Hockey*http://www.ualberta.ca/~mkozak/oilers.htm
Writer-Internet Mountain Biking World*http://www.mc2-csr.com/~mnoble/imbw
***************************************************************************

 
 
 

Suntour-->Shimano???

Post by M » Thu, 04 Jul 1996 04:00:00

Quote:

>> My bike has a Suntour Accushift 6000 rear derailleur and Suntour
friction
>> shifters.  It also uses freewheels, not a cassette.  I'm thinking about
>> getting a grip shifter and some Shimano rear derailleur.  A friend of

mine

if you are using a free wheel i would investigate the cost of a new sachs
freewheel, it will work with shimano. Other than that all you would havee
to buy will be the rear mech and a shifter, sachs sell single shimano
compatible shifters, so that is the cheapest thing to do, otherwise you can
stay with friction shifters... then there is no problem with the rear mech
you use,
    Remember when changing the freewheel get a new chain as well, any sachs
will do but the more you spend the stronger and nicer the chain looks:-)

Quote:
>> Was he right?  Can I just replace the derailleur and shifter only and
>> still get some satisfactory result?  And can I put a new cassette onto

my

I don't know the spacing on a suntour block so i can't answer this, as i
have said a sachs block will work, you don't mention the spacing of the
rear dropouts, this can affect the block you can use, i guess you are using
a 7speed block so just stay with 7 speeds, otherwise you may have to have
the rear wheel redished, not a lot of money but a little hassle.

so to sum up.

1 shimano rear mech, 1 sachs wavey shifter( better grip by all accounts), 1
sachs freewheel and 1 sachs chain is all you need.

MO

 
 
 

Suntour-->Shimano???

Post by mlu.. » Mon, 08 Jul 1996 04:00:00

Quote:

> Your friend is right. The spacing between cogs in a Shimano drive train
> is different from the spacing in Suntour.

Not.

Many many Suntour screw-on freewheels have compatible spacing with S/O
shifting systems. Most will work. I have done this many times with very
good results. S/O would like you to believe this isn't true, in order to
sell more of their junk, but give it a try. What do you have to lose?

Marc in Ohio

 
 
 

Suntour-->Shimano???

Post by Robert Perki » Wed, 10 Jul 1996 04:00:00


|>
|> > Your friend is right. The spacing between cogs in a Shimano drive train
|> > is different from the spacing in Suntour.
|>
|> Not.
|> Many many Suntour screw-on freewheels have compatible spacing with S/O
|> shifting systems. Most will work. I have done this many times with very
|> good results. S/O would like you to believe this isn't true, in order to
|> sell more of their junk, but give it a try. What do you have to lose?

In general, suntour 7 speed powerflo freewheels (about the only
ones still commonly available- try Rivendell) share spacing
with shimano 7 speed.  Suntour winner pro 6/7 speed & earlier
pre-index freewheels from suntour had different spacing between
the cogs to facilitate friction shifting, if I remember correctly.

Sachs Aris freewheels share Shimano spacing & are commonly available.


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