Author Topic: 1974 Maico 450 Build  (Read 22488 times)

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Offline flyingdg

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1974 Maico 450 Build
« on: April 12, 2011, 08:56:39 pm »
I'm going to start a new build on a 74 450 if you would like to follow along. Thanks DG

http://1974maicogp450.blogspot.com/


090

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Re: 1974 Maico 450 Build
« Reply #1 on: April 13, 2011, 05:28:05 am »
Hi Doug. Is this the one you are building for me ?  ;D
I shall be watching for sure.

Offline paul

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Re: 1974 Maico 450 Build
« Reply #2 on: April 13, 2011, 08:41:46 am »
im watchin  ;D

Offline shortshifter

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Re: 1974 Maico 450 Build
« Reply #3 on: April 13, 2011, 01:59:22 pm »
Already looks pretty interesting,well laid out blog with the associated articles.By 450 do you mean 440 or is that the capacity after oversize piston etc?My Maico knowledge isn't what it should be ;)

Offline flyingdg

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Re: 1974 Maico 450 Build
« Reply #4 on: April 14, 2011, 06:04:26 am »
Brad, If you come over to race at the Farm it is yours to race! 440 or 450 it is the same. I posted today on the Bike being pulled apart. DG

http://1974maicogp450.blogspot.com/

firko

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Re: 1974 Maico 450 Build
« Reply #5 on: April 14, 2011, 10:52:10 am »
Disclaimer: I have no problems whatsoever with the frame Dougs using for his project. I too look forward to following his rebuild adventure.
Now that that's out of the way, back when pre '75 ruled the waves Dougs modified frame would be considered ilegal under our rules (yes I know Dougs in the US) due to it being modified from standard.
Our rulebook states in part "it is not acceptable for frame tube runs to be different from the original even if the frame geometry is apparently the same. This rule was included to deter people from modifying the rear suspension on their bikes as was the fashion in 1974, prior to the year cutoff. I bought a beautifully modified '73 440 Maico that had reputedly been done by Wheelsmith but was told that because it was a '73 model I'd have to revert to the original suspension specs. Not wanting to ruin such a well modded frame, I transferred all of the running gear to a stock '71 square barrel 250 frame and all was well with the officials. I kept the "Wheelsmith" frame and swapped it with Les Richters in a deal for some other stuff a couple of years ago.

I can see the point in enforcing the rule back in the 90's, if it had been allowed, everyone would be running '74 spec rear suspension on their Maicos, no matter what year they were. Today things have changed, it's a lot harder to get pre '75 bikes on the track so I feel that as long as the modification perfectly mimics the original '74 tube run and the suspension is limited to 4".....no problem.


Offline flyingdg

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Re: 1974 Maico 450 Build
« Reply #6 on: April 17, 2011, 01:33:19 am »
I posted some updates today. DG

http://1974maicogp450.blogspot.com/

Offline flyingdg

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Re: 1974 Maico 450 Build
« Reply #7 on: April 19, 2011, 08:01:44 am »
I posted some photos of the new Maico head and a patern of a Airbox I will be making. DG

http://1974maicogp450.blogspot.com/


Offline flyingdg

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Re: 1974 Maico 450 Build
« Reply #8 on: April 29, 2011, 12:11:31 pm »
I posted some photos of the airbox and number plates. DG


http://1974maicogp450.blogspot.com/

Offline flyingdg

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Re: 1974 Maico 450 Build
« Reply #9 on: May 03, 2011, 07:54:08 am »
I posted some more photos, a rear splash guard, Legends and Heros SLC Supercross, aluminum number plates are done. DG

http://1974maicogp450.blogspot.com/
« Last Edit: May 03, 2011, 08:12:25 am by flyingdg »

Offline flyingdg

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Re: 1974 Maico 450 Build
« Reply #10 on: May 06, 2011, 11:38:24 am »
I have some new posts on the build. Put the new Maico head on my 450 and road it WOW! bolted all the Aluminum parts on to see how they would fit. DG



http://1974maicogp450.blogspot.com/
« Last Edit: May 06, 2011, 11:47:20 am by flyingdg »

Offline flyingdg

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Re: 1974 Maico 450 Build
« Reply #11 on: May 22, 2011, 05:43:36 am »
I have some new posts up. I made a 250 4 speed clutch cover and I got some new parts in. DG

http://1974maicogp450.blogspot.com/

Offline flyingdg

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Re: 1974 Maico 450 Build
« Reply #12 on: June 08, 2011, 03:10:16 am »
I have some new posts on the Aluminum GP Tank and the Reed Valve Cylinder.
http://1974maicogp450.blogspot.com/

Offline flyingdg

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Re: 1974 Maico 450 Build
« Reply #13 on: November 19, 2011, 09:22:09 am »
I posted some photos on my Blog of a frame I got that looks like a early GP. But
the frame number is for a 1973? Please tell me what you think. Thanks DG

http://1974maicogp450.blogspot.com/

Offline GMC

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Re: 1974 Maico 450 Build
« Reply #14 on: November 20, 2011, 10:21:47 pm »
“This post is going to add to the long time debate about the Maico frame, Is it real or just a modified Maico frame with the LTR GP specs.”

He should be wiser than to fall for such an easy entrapment, even the audience knows it’s a trap, they scream out, “No, No, stay away, don’t fall for it”
But like a moth to a flame he naively enters the dark forces of another eternal Maico frame debate.


Maico had at least 2 types of shock mounts for the 74 LTR model.
One style had pressed style shock mounts with the obligatory weight saving holes in them, these mostly seemed to end up in the USA.
The other style, which you have, is typical of what mostly turned up in Aust.

For the most part what you have looks original, the gussets on the swingarm look right, they even have the little recess to allow the shock to clear the gusset.
The outer shock gussets on the frame look right as well, they even have that little tiny corner gusset at the front of the outer mounts.
But the inner shock mounts on the frame don’t look right.
Yours are flat, and they look thicker than normal.
They usually have 2 bends in them and should be around 2mm thick, yours look more like 3mm thick. The outer mounts look right at around 2mm thick.
Also the rear airbox mount. Normally I have seen them as a piece of angle welded into the top corner of the tubes, yours seems to be a piece of flat welded lower down.




You can just see the end of the angle air box support in front of the shock mount tubes and under the seat rail.




My repair kit for the 74 GP frame, shows the bends in the rear gussets
G.M.C.  Bringing the past into the future

Shock horror, its here at last...
www.geoffmorrisconcepts.com

For the latest in GMC news...
http://www.geoffmorrisconcepts.com/8/news/