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Conference noted::bicycle

Title: Bicycling
Notice:Bicycling for Fun
Moderator:JAMIN::WASSER
Created:Mon Apr 14 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3214
Total number of notes:31946

2421.0. "Self Energizing Brakes" by CASEE::LALLI (Didier - OSAG Valbonne - DTN 828.5423) Mon Sep 28 1992 07:51

Has anyone any comments on SE (Self Energizing) brakes made by Pedersen and 
now sold by Scott (SE) and also Suntour (XC Pro SE).

They use a technique which transform the force of the wheel turning into breaking
power. That is the faster the wheel turns, the stronger the brakes are pushed 
to the rim.

Can you really feel a difference compared with standard brakes?
Are really less tiring for arms?
Are they really worth the price difference ($40 instead of $15)?

Thanks,

Didier
T.RTitleUserPersonal
Name
DateLines
2421.128300::GOODMon Sep 28 1992 10:464
    
    	Yes.
    
    	Roger
2421.2DANGER::JBELLAleph naught bottles of beer on the wall...Mon Sep 28 1992 13:066
    Do self energizing brakes have problems when the rim is wet?

    Wouldn't you tend to get less breaking power until you get
    to a dry spot where the breaks suddenly get a lot stronger?

    -Jeff
2421.3KIMBER::GOODMon Sep 28 1992 16:344
    
    	No
    
    		Roger
2421.43D::ROTHGeometry is the real life!Mon Sep 28 1992 22:434
    I would wonder how well these would work when the rim is a bit out of
    true.  They would have to amplify such nonuniformities.

    - Jim
2421.528300::GOODTue Sep 29 1992 11:1510
    
    	I'm not trying to be a wise guy 8*). I had first hand experience
    with these brakes last Sat. in the pooring rain and they work very
    well. They are on my friends bike and I got to torture test them. He
    was raving about them so much I had to check it out. The next day he
    broke a spoke and his wheel was slightly out of true and they still
    worked well. The price isn't much more than a few hi-performance
    brakes and is less than others like Grafton.
    
    	Roger
2421.6Curious minds want to know...PAKORA::GGOODMANBorn VictimWed Sep 30 1992 10:277
> Are really less tiring for arms?
    
    When was the last time your arms hurt from braking?
 
    Graham.
    
2421.7ThanksCASEE::LALLIDidier - OSAG Valbonne - DTN 828.5423Thu Oct 01 1992 07:3316
   
>    When was the last time your arms hurt from braking?
 
I guess what I really meant was "my hands", but during my holidays I did a ride
from Morzine to Avoriaz then back to Morzine. That was +1000 then -1000 and
after the -1000 part my hands and my arms were dead from too much braking.

I got to admit that I have some shitty Shimano 300, brake levers (plastic) that
also need to be replaced. Well maybe the bike itself needs replacement...

Thanks Roger, they seemed to be what I need to get

One last question, is there any risk that those brakes would be too strong for
my frame (Specialized Hard Rock Sport 1990)? 

Didier 
2421.8JURA::PELAZ::MACFADYENGetting and spendingFri Oct 02 1992 07:468
>    When was the last time your arms hurt from braking?

It's true Graham, that's a flatlander's question. If you do a lo o o ng
twisty descent, it can really kill your hands and forearms if you're not
used to it.


Rod
2421.9:-)MOVIES::WIDDOWSONIts (IO$_ACCESS|IO$M_ACCESS) VMSFri Oct 02 1992 08:144
    Rod,
    
    It's a lie and you know it.  I've tried following you down hill and I
    *know* that you don't brake.
2421.10Ask any PervertIDEFIX::HEMMINGSLanterne RougeFri Oct 02 1992 11:599
Def: Pervert = any one having taken part in more than 1 Epervier

Descending from N D des Anges to Plan de La Tour takes as much out of you as the
previous 4 cols.  Back, arms, fingers, shoulders.... you name it, instead of a
nice relaxed freewheel of 15-20 km to get a breather, you feel as if you have
been run over by a steam-roller.

Yours, Pervert (cubed)
2421.11the brakes are not the problem.TFH::DONNELLYTake my advice- Don't listen to meThu Oct 15 1992 13:304
I contend that the hands/forearms are sore from riding not braking.  If 
you ride downhill hard your hands/forearms are going to be sore even if you
never touch the brakes; in fact more.  white knuckles is what does it.
-craig