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<  Custom chassis  ~  gallery of a DIY frame for SOHC 750

mec
Posted: Sat Oct 25, 2008 8:35 pm Reply with quote
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Joined: 09 May 2008 Posts: 19
for a special engine, there is the need for a special frame Smile

in the late 70ies I raced an egli cb 750. the engine had 1000ccm, complete bike had a weight of 163kg with oil (without fuel), ready to ride, street legal.
to my mind, the egli big backbone frame is one of the best chassis ever built. it is light, simple, there is easy access to all components and the frame is rigid enough for almost all sohc engines up to all speeds.

therefore I decided to build such a clone by my own:
http://www.humyo.com/6644029-200544843

enjoy the pics.

mec
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Satanic Mechanic
Posted: Sun Oct 26, 2008 7:40 pm Reply with quote
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Joined: 04 Sep 2005 Posts: 309 Location: Munich, Germany
Mec,

I am more than amazed by your skills and your workshop. I am really looking forward to seeing you next time I am in your area!

All the best,
Axl
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mec
Posted: Sun Oct 26, 2008 7:44 pm Reply with quote
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Joined: 09 May 2008 Posts: 19
hi axl,

you are welcome.

mec
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mec
Posted: Sat Nov 08, 2008 10:30 pm Reply with quote
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Joined: 09 May 2008 Posts: 19
new pictures added.

frame and swingarm done!
the last pictures show the 1000ccm engine implantet in the new frame.

also to see, that I had to reposition the steering tube due to an improper steering angle. my goal was 65° (the false position showed 61.5° and I did not want to build a chopper Smile). this repair was done in half a day.

link: http://www.humyo.com/6644029-200544843

mec
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Voxonda
Posted: Sun Nov 09, 2008 4:03 pm Reply with quote
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Joined: 01 Nov 2006 Posts: 42 Location: The Netherlands
Very impressed! Always been a dream of me to own a Egli (replica), but then again there is so much I have dreamed of.

Cheers, Rob
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Deer Slayer
Posted: Tue Nov 11, 2008 8:25 am Reply with quote
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Joined: 30 Oct 2007 Posts: 15 Location: Howell Michigan
I like it a lot. If I had more ambition, I might actually get some of my projects done. I found another CB750 (1974) with a clean title, running engine, good carbs, and a tank with a very minor dent. It's been FUBARed electrically though, and it's missing the front brake master cylinder, tach, dummy light cluster, and some DUMB@$$ cut the front brake line. It RUNS ok, and I can ride it, but it's a beater. I have all the parts to make it into a whole bike. Oh yeah, it's got STRAIGHT PIPES Rolling Eyes !!! One of the bikes will get an 836 kit one of these days. Twisted Evil
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evh750
Posted: Sun Nov 16, 2008 12:56 pm Reply with quote
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Joined: 30 Jul 2008 Posts: 2
Hi mec,

looks very nice. I hope it will drive like this. What’s the weight of the frame?

I’ve seen your modified dyno cover on the pictures. What kind of dyno are you using now or will you go without a dyno anyway (race only)?

Best regards,
Eric
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mec
Posted: Sun Nov 16, 2008 7:42 pm Reply with quote
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Joined: 09 May 2008 Posts: 19
hi evh750,

its a little bit too early to weight the frame, cause in the steering tube and the engine-mount tubes there are heavy steel inserts pressed in. when all the work is done on the frame and it is nickel plated, these inserts will be replaced by aluminium ones.

the dynocover is selfmade and a fake. there is no dyno. the engine will be running exclusively on LiFePoly accus.

mec
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mec
Posted: Wed Dec 31, 2008 10:54 pm Reply with quote
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Joined: 09 May 2008 Posts: 19
the work is almost done.



new pixs added http://www.humyo.com/6644029-200544843

mec
wish you a happy new year
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Satanic Mechanic
Posted: Fri Jan 02, 2009 8:33 am Reply with quote
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Joined: 04 Sep 2005 Posts: 309 Location: Munich, Germany
Fantastic work! Seems you will have the bike ready for the season!

All the best for 2009!

Axl
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simon#42
Posted: Sat Jan 03, 2009 7:37 pm Reply with quote
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Joined: 24 Dec 2008 Posts: 5
i really like this bike , fantastic attention to detail and some great high quality components , the marvic wheels look particularly good and are they tmr mikunis ?
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mec
Posted: Sat Jan 03, 2009 9:16 pm Reply with quote
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Joined: 09 May 2008 Posts: 19
thanx.

carbs are 34er oem gsxr from a later model.

mec
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mec
Posted: Sat Jan 17, 2009 8:54 pm Reply with quote
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Joined: 09 May 2008 Posts: 19
hello,

now my project came to an end.
total weight of the bike (ready to start, without oil and without fuel): 168.5kg



mec
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simon#42
Posted: Sun Jan 18, 2009 11:44 am Reply with quote
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Joined: 24 Dec 2008 Posts: 5
when the snow clears you can tell us all what it is like to ride ! i know its pretty much a race bike on the road but you have done well to keep the weight that low . why number 11 ? [ if you were as old as me in england it would make you a roger marshall fan ! ]
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mec
Posted: Sun Jan 18, 2009 6:49 pm Reply with quote
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Joined: 09 May 2008 Posts: 19
simon#42 wrote:
when the snow clears you can tell us all what it is like to ride ! i know its pretty much a race bike on the road but you have done well to keep the weight that low . why number 11 ? [ if you were as old as me in england it would make you a roger marshall fan ! ]


yes, dyno results and road test will follow.

number 11? I thought everybody who uses number 11 is a fan of me Smile

in the old days, we did not use prefabricated numbers to glue on (not easy to get, expensive). all we had was insulating tape or perhaps some drops of paint and a brush. number 11 was the easiest to do (except number 1).

mec
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