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Penton Owners Group

General Discussion => Penton Talk => Topic started by: chris richardson on November 06, 2002, 09:52:44 PM

Title: where are the MX pipes?
Post by: chris richardson on November 06, 2002, 09:52:44 PM
What happened to the effort to get some repro (aftermarket) performance expansion chambers/pipes made?

I need one each for the Mint and MC5 400.

$$$ ready, Help!
CR

 
Title: where are the MX pipes?
Post by: john durrill on November 07, 2002, 01:29:55 AM
chris,
  one of the group is sending me the pipe specs for a 400. its a reprint of an old keeping track. we should have it posted to the Library very soon.
that will help  if you have local welder that will do the job or if you can do it yourself.
John D.

 
Title: where are the MX pipes?
Post by: john durrill on November 07, 2002, 01:23:02 PM
Chris,
Glenn supplied a page from past issues of Keeping track. I uploaded it to the Library.
Its in Files.
 it shows how to add 6 Hp to your 400 if you think it needs it chuckle chuckle.
We still need Rob W to measure a stock 400 pipe. The dimensions listed are for how to modify a stock one for some added boost.
John

 
Title: where are the MX pipes?
Post by: chris richardson on November 07, 2002, 05:03:27 PM
OK  - Thanks.

We do have both Circle F and ACE pipe makers here in Houston. I'll take the print out to them and let the group know how it went!

CR

 
Title: where are the MX pipes?
Post by: chris richardson on November 21, 2002, 06:16:48 PM
Group, I need a diagram with dimensions for a hot mx style pipe for mint 400. Or the pipe itself, of course...

Where do I find the "library" John refers to?

Is the info there something I can take to a pipe maker to make from scratch?

It would seem as though demand is great enough from the racers that suppliers would want to stock a few.

The recent tank effort was great and resulted in a decent product!

I also run a CZ in AHRMA and can buy ANYTHING I need repro/new. Hate to say it, but running a Penton is way more of a challenge b/cause of parts.

Thanks,
Chilly Pepper

 
Title: where are the MX pipes?
Post by: john durrill on November 22, 2002, 03:45:48 PM
chris,
the library is  some space we have on Yahoo groups. we can post articles and info on mods , jetting and engines. Its jsut for POG memebers .
 Heres the web address.
http://groups.yahoo.com/group/PentonRestorationandTechGroup/
John

 
Title: where are the MX pipes?
Post by: [email protected] on November 24, 2002, 04:50:14 PM
Guys, I went to the library on Yahoo, signed up,and could not get into the files. What am i doing wrong(sorry, i not very computer friendly). I too would like to make a new pipe for my 400.
           Thanks!

 
Title: where are the MX pipes?
Post by: john durrill on November 24, 2002, 06:30:12 PM
Jeff, whats your Yahoo ID . ill look and see why you cant get in.
John

 
Title: where are the MX pipes?
Post by: Mike Lenz on November 24, 2002, 09:35:30 PM
Same goes for me. The only thing I can get it to do is ask me to verify my email adr . My user name is MikeLenz2000

 
Title: where are the MX pipes?
Post by: john durrill on November 25, 2002, 07:03:00 AM
mike,
 sent you an invitation, lets ee if that works.
John

 
Title: where are the MX pipes?
Post by: rob w on November 26, 2002, 10:26:35 PM
John, I would like to get the correct specs to you from a stock "75" 400 exhaust pipe. Could you please email me your fax number or mailing address.

 My advise (for what it's worth) to the average guy- you probably don't need six extra horsepower for your 400, unless your name happens to be Kevin Brown (or you have the arms of Hercules)  I will guess your lap times will be quicker with six less horsepower.

 
Title: where are the MX pipes?
Post by: john durrill on November 27, 2002, 07:48:53 AM
Rob,
 It should be in your in box.
 thanks. now toninght I need to convert the measurements for the 125 and 175 pipe I have and post them. Mark Annan sent me the spec's for a Carl Cranke 100 pipe. Its based on the 125 CMF pipe. so will post them also.
 If someone has a stock 250 ( We have the 250 Cranke pipe specs posted) pipe they can measure we will have all the pipe spec's in a place everyone can get too.
John & Peter

 
Title: where are the MX pipes?
Post by: pipeguy on December 07, 2002, 03:09:11 AM
I would be interested in building these pipes. I would need a bike. My shop is in Ontario CA. http://www.pro-formracing.com

 
Title: where are the MX pipes?
Post by: don howard on December 08, 2002, 08:25:35 AM
hi Chris. Iam still looking for a 125 steel tanker six day complete exhaust system. any body know of a maker of such , email me        thanks          don howard [email protected]

 
Title: where are the MX pipes?
Post by: tlanders on December 09, 2002, 11:30:27 PM
I spoke at length today with Eric at Pro Form Racing. He is building a 400 pipe for a guy in California and has his bike in his shop to make sure it fits. He is not building a copy of a stock pipe or anybody elses pipe but is designing it from scratch to produce smooth power throughout the whole rpm range. Before you place an order for a pipe with anyone else, I would recommend you call him and check it out. (909) 947-1121

 
Title: where are the MX pipes?
Post by: tlanders on December 09, 2002, 11:42:31 PM
John, I went to the Restoration/Tech group site and did not find the Carl Cranke info for 250s, just pipe specs for 400s.

Teddy

 
Title: where are the MX pipes?
Post by: Dennis Jones on December 10, 2002, 08:05:06 AM
A 125 down pipe just went for $200 on ebay. Maybe Eric at Pro Form can help here, anybody have a 125 near his shop? I know I would take one.

Dennis Jones
Title: where are the MX pipes?
Post by: john durrill on December 10, 2002, 06:02:12 PM
Teddy,
 added the files for the Cranke cylinder and Pipe. dont know what bacame of the first two i uploaded.
save the files on your machine then do a print in black and white . pick the best quality you can
John

 
Title: where are the MX pipes?
Post by: tomale on December 13, 2002, 10:29:03 AM
Does any one know if you can get pieces for making your own pipes? What about silencers and spark arrestors? My stock pipe has almost never been used and I want to keep it that way but my after market pipe is in good shape and has a spark arrestor in it but has now markings as to such. I think this could be a problem

I raced my 76 MC5 in the early 70 but just now getting backe into riding again.
Title: where are the MX pipes?
Post by: Jeff Reid on December 16, 2002, 10:12:35 PM
I've seen the pipe work done by Eric and his crew at Pro-Form Racing/Maicos Only and I would highly recommend that option for a really good pipe for your Penton. I talked to Eric some time ago about making pipes for Pentons and at that time he just lacked a "model" for fitment purposes. If he has a bike to build a pipe for then start sending him orders.

Jeff Reid, VP Ohlins USA, Husqvarna and Penton/KTM collector
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