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cristalclear13
Joined: 19 Sep 2007
Posts: 363
Location: Southeast Georgia
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 Posted: Mon Oct 22, 2007 4:57 pm Post subject: Mechanical brakes on Mark II |
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Hi Kolbers. I'm trying to fix the brakes on the Mark II I bought before the airworthiness inspection.
It's a terrible picture...I'll try to get a better one...but does anyone recognize these brakes? Like who makes them...where can I get replacement pads?
The cable was holding that top arm in a "brakes on" position no matter how much I released the tension using the screw on the control stick. When I unscrewed the nut on the top arm of the brake I found the control cable threaded through the hole in the drilled nut. When I took the cable out of the hole, the top arm released the brakes, so it wasn't the arm that was stuck but the cable was holding it. I'll obviously need new brake pads since they weren't stopping her, but don't know why the cable was holding the brakes in the "on" position.
I'm trying to fix these the cheapest, easiest, and fastest way possible.
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_________________
Cristal Waters
Kolb Mark II Twinstar Rotax 503 DCSI Sept 2007 - sold Sept 2012
Private Pilot Aug 2008
ELSA Repairman for N193Y April 2008
Rotax 2 stroke maintenance April 2009 |
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jindoguy(at)gmail.com
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| Posted: Tue Oct 23, 2007 3:23 am Post subject: Mechanical brakes on Mark II |
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Cristal, You're right about the picture, not much detail. They appear to be cable operated disk brakes. Have you checked the cable to be sure it's not rusted in place?
http://www.mfgsupply.com/m/c/4-488.html?id=ui9AGfJQ
http://www.gokartsupply.com/discbr.htm
Try gokartparts.com or gokartsupply.com if the links above don't work.
Rick
On 10/22/07, cristalclear13 <cristalclearwaters(at)juno.com (cristalclearwaters(at)juno.com)> wrote:[quote]--> Kolb-List message posted by: "cristalclear13" < cristalclearwaters(at)juno.com (cristalclearwaters(at)juno.com)>
Hi Kolbers. I'm trying to fix the brakes on the Mark II I bought before the airworthiness inspection.
It's a terrible picture...I'll try to get a better one...but does anyone recognize these brakes? Like who makes them...where can I get replacement pads?
The cable was holding that top arm in a "brakes on" position no matter how much I released the tension using the screw on the control stick. When I unscrewed the nut on the top arm of the brake I found the control cable threaded through the hole in the drilled nut. When I took the cable out of the hole, the top arm released the brakes, so it wasn't the arm that was stuck but the cable was holding it. I'll obviously need new brake pads since they weren't stopping her, but don't know why the cable was holding the brakes in the "on" position.
I'm trying to fix these the cheapest, easiest, and fastest way possible.
--------
Cristal
Mark II Twinstar
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=141216#141216
Attachments:
http://forums.matronics.com//files/brakes2_mark_ii_twinstar_tundra_tire_n193y_198.jpg
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jbhart(at)onlyinternet.ne
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| Posted: Tue Oct 23, 2007 4:42 am Post subject: Mechanical brakes on Mark II |
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At 05:57 PM 10/22/07 -0700, you wrote:
Cristal,
Looks like a brake off of a riding lawn mower, etc. Try to find a name or
number and Google it.
Apply some WD40 to the top end of the cables at the stick until it
penetrates the rust that is binding them to the guide. Pull the cables and
if salvageable coat them with very soft grease and re-install.
Jack B. Hart FF004
Winchester, IN
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Thom Riddle
Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)
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| Posted: Tue Oct 23, 2007 6:44 am Post subject: Mechanical brakes on Mark II |
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Cristal,
I do not recognize the brakes on your airplane but do recognize the big
tires. FWIW, the larger the diameter the tires, the more power needed
by the brakes to retard their motion. You won't get much power from
mechanical brakes even with new pads. On a Kolb with standard main gear
configuration, this is not all bad because of the potential of
nose-over with really good brakes is substantial.
Not much help I know but you should not expect very good braking from
mechanical brakes; not enough mechanical advantage.
Thom in Buffalo
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Thom Riddle
Buffalo, NY (9G0)
Don't worry about old age... it doesn't last very long.
- Anonymous |
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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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| Posted: Tue Oct 23, 2007 7:01 am Post subject: Mechanical brakes on Mark II |
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Don't remember the make, had a Quicksilver MX years ago with those same
units. Buy new pads and rebuild them yourself would be the best bet, ought
to be able to get pad material at a good lawn mower shop. If the new pad
material isn't the right shape but is oversized you can wear a good mask,
protect yourself at all times, and grind the new pads to shape with a bench
grinder. Those brakes worked tolerably well on the slow Quicksilver, but
needed to be taken apart, cleaned, greased and adjusted well before they
would work at all, they were a mechanically ramshackle arangement. And your
cables will need to be in good, well-lubed condition. You ought to be able
to get them working for under $30 including new cables if you don't mind
getting dirty.
Richard Pike
MKIII N420P (420ldPoops)
---
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_________________
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing. |
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