Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

C90 Brakes

Matronics Email Lists Forum Index -> Kolb-List

View previous topic :: View next topic

Author Message

Rick Lewis

Joined: 03 Jul 2007
Posts: 122
Location: Kingston, Tn.

Posted: Mon Jan 05, 2009 4:28 pm Post subject: C90 Brakes

I am about to order the brakes for my Kolb M3X and am wondering if the C90 brakes, that Kolb offers, is adequate.  Looking at them they seem kinda of wimpy.  What are the pro and cons?  I really like the neat installation but wonder if they will do the job.



Rick Lewis

KOLBS YELLOW PLANES CONSTURCTION 007.jpg

Description:

Filesize:

195.34 KB

Viewed:

381 Time(s)

JetPilot

Joined: 10 Jan 2006
Posts: 1246

Posted: Mon Jan 05, 2009 4:47 pm Post subject: Re: C90 Brakes

I have those brakes by Obrien, and they are not strong enough in my opinion.   There are times when I am pressing on the pedals about as hard as I can just to get normal deceleration, I can not stop quick with them. 



They have been very trouble free and work perfectly, I have not had to touch the brakes in 2 years, but my MK III  just needs more braking power than they are capable of.



Mike

_________________
"NO FEAR" - If you have no fear you did not go as fast as you could have !!!

Kolb MK-III Xtra, 912-S

sspence801(at)sbcglobal.n
Guest

Posted: Mon Jan 05, 2009 5:05 pm Post subject: C90 Brakes

I have the same opinion about my Obrien brakes.  In fact they don't want to hold the plane inplace on pavement for even a modest run-up of 3000 rpm.  I went to the Matco eminar at Airventure, the speaker suggested that major factor in braking power is the geometry of the pedal to the master cylinder piston.  I have thought about extending the toe of the pedal to exert more force/preasure on the calipers and enhance the stopping power.

  

 Steve Spence

 Auburn Hills, MI

 M3X



 

   From: JetPilot <orcabonita(at)hotmail.com>

To: kolb-list(at)matronics.com

Sent: Monday, January 5, 2009 7:47:19 PM

Subject: Re: C90 Brakes



--> Kolb-List message posted by: "JetPilot" <orcabonita(at)hotmail.com (orcabonita(at)hotmail.com)>



I have those brakes by Obrien, and they are not strong enough in my opinion.  There are times when I am pressing on the pedals about as hard as I can just to get normal deceleration, I can not stop quick with them. 



They have been very trouble free and work perfectly, I have not had to touch the brakes in 2 years, but my MK III  just needs more braking power than they are capable [quote][b]

ElleryWeld(at)AOL.COM
Guest

Posted: Mon Jan 05, 2009 6:30 pm Post subject: C90 Brakes

I Purchased that same set of brakes from TNK and  installed them on my Firestar  they work great I would install them on an  Xtra with no hesitation 

  

 Ellery in Maine 

 do not archive

  

  In a message dated 1/5/2009 7:28:59 P.M. Eastern Standard Time,  cktman(at)hughes.net writes:

  	  Quote: 	
		  -->    Kolb-List message posted by: "Rick Lewis" <cktman(at)hughes.net>



I    am about to order the brakes for my Kolb M3X and am wondering if the C90    brakes, that Kolb offers, is adequate.  Looking at them they seem kinda    of wimpy.  What are the pro and cons?  I really like the neat    installation but wonder if they will do the job.



Rick    Lewis





Read this topic online    here:



http://forums.matronics.com/viewtopic.php?p=223051#223051





Attachments:    



http://forums.matronics.com//files/kolbs_yellow_planes_consturctionbsp;    es  y                 - MATRONICS WEB FORUMS  =========================<             - List Contribution Web Site  ;                             =========================



	




New year...new news.  Be the first to know what is making headlines.

  [quote][b]

Thom Riddle

Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)

Posted: Tue Jan 06, 2009 7:54 am Post subject: Re: C90 Brakes

I test flew a re-assembled Challenger this past weekend. It had the Black Max brakes on it which I've heard were good and inexpensive. I can say with certainty that these Black Max brakes are outstanding and wish I had them on my airplane. See them at the following link.



http://flyfbi.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=FS&Category_Code=BKS



or



http://tinyurl.com/9mm3f9

_________________
Thom Riddle
Buffalo, NY (9G0)

Don't worry about old age... it doesn't last very long.
- Anonymous

Dana

Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA

Posted: Tue Jan 06, 2009 10:24 am Post subject: C90 Brakes

At 10:54 AM 1/6/2009, Thom Riddle wrote:

 	  Quote: 	
		  



I test flew a re-assembled Challenger this past weekend. It had the Black 

Max brakes on it which I've heard were good and inexpensive. I can say 

with certainty that these Black Max brakes are outstanding...


	


I have the Black Max brakes on my UltraStar and as Tony the Tiger says, 

they'rrrre Grrrrreat!



Can't speak for the birds with larger engines, but they'll hold my US for a 

full power runup with no trouble at all.  Mine has Hegar heel brake master 

cylinders, though, instead of FBI's single hand brake master cylinder.



-Dana



--

  Giving money and power to government is like giving whiskey and car keys 

to teenage boys.

NeilsenRM(at)comcast.net
Guest

Posted: Wed Jan 07, 2009 7:10 am Post subject: C90 Brakes

Rick



Wow I thought you were selling your plane. It's super your still working on 

it.



I have the stock Matco brakes and they will hold the plane at least till the 

tail comes up with the stock wheel size. A bigger issue is how the brake 

peddle to master cylinder leverage is configured. With toe peddles you are 

pushing against the rudder peddles and the bigger concern the rudder cables 

during brake activation. I have the heal peddles but I understand Paul Petty 

had a arrangement with more mechanical advantage. This may be the same set 

up that Mark German developed.



Rick Neilsen

Redrive VW Powered MKIIIC



---

Rick Lewis

Joined: 03 Jul 2007
Posts: 122
Location: Kingston, Tn.

Posted: Sun Jan 18, 2009 3:32 pm Post subject: Re: C90 Brakes

Thanks for all the input on this.  I believe I will be going with the Matco brakes with a 6" tire instead of the 5".  I will also modify the ratio of the brake pedal as I saw some time ago that this may be a problem, 1:1 just won't do it.



Rick Lewis

sky-king(at)inbox.com
Guest

Posted: Mon Jan 19, 2009 4:43 pm Post subject: C90 Brakes

How do you change the ratio of the brake pedal?I think it would help me and maybe someone else



[quote] --

Rick Lewis

Joined: 03 Jul 2007
Posts: 122
Location: Kingston, Tn.

Posted: Mon Jan 19, 2009 4:55 pm Post subject: Re: C90 Brakes

sky-king:



      I have some idea's on how to change the ratio on the brake cylinders and when done I will post, with pictures.  I don't really think it will be to hard, since I had to do this on another aircraft I buildt back in 1993.  I'm going to try and make it so others will be able to adapt easily.



Rick Lewis



    I'm editing this post to report the company that makes the C-90 brake recommends a ratio of 4:1.  This is good information, will post more on this later. Check it out at   http://www.tracyobrien.com/moreinfo.asp?id=46

JetPilot

Joined: 10 Jan 2006
Posts: 1246

Posted: Mon Jan 19, 2009 6:51 pm Post subject: Re: C90 Brakes

I'm glad you are going to come up with a solution for the Matco Master cylinders also, even though the Obrien brakes are to small for the MK III Xtra, it would be nice if I did not have to press the pedals so hard to get normal braking.



It is very easy for me to get the Obrien brakes on my Kolb so hot that they fade at the end of a long taxi on pavement, leaving me almost no braking at all.



Mike

_________________
"NO FEAR" - If you have no fear you did not go as fast as you could have !!!

Kolb MK-III Xtra, 912-S

NeilsenRM(at)comcast.net
Guest

Posted: Mon Jan 19, 2009 7:05 pm Post subject: C90 Brakes

Why reinvent the brake peddles. Paul Petty had a set that has more ratio in 

his Kolbra. He posted photos that are likely in the archives. Seems like 

there was even a video. If I remember correctly Mark German develop the 

brake peddles and may have made a copy for Paul. The guys that now own one 

of their planes are on the list.



Rick Neilsen

Redrive VW powered MKIIIC



---

Rick Lewis

Joined: 03 Jul 2007
Posts: 122
Location: Kingston, Tn.

Posted: Tue Jan 20, 2009 5:28 am Post subject: Re: C90 Brakes

All I could find in the archives is the starting of the peddles he used, nothing else.  If you or anyone can find anything on this it would be a great help to us all.



      Rick Lewis

Display posts from previous:

	Matronics Email Lists Forum Index -> Kolb-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum