DIY Egli Sohc 4

[Ricisan]

A brief intermission: For back pain, try INVERSION! Plumb yourself straighter. Naturally.

Back to your regular thread of georgous cycle porn.

Ricisan

[Ecosse]

Thanks mec, you may have saved me some money. I've thought of inversion too but my chiropractor is a cutie! 

By the way I like the use of oval/flat stock for the swingarm; any reason that over round or square?


So, should we just give mec a Bike of the Month award now and be done with it? He's got my nomination.

[BlindJoe]

I say we give him bike of the year. You have set the bar high Mec and given us all something to aim for in terms of craftsmanship and professionalism, thanks for posting.

[Terry in Australia]

I say we give him bike of the year.

+1! 

[babyfood1217]

I think I just orgasmed...never said that on a forum before, but considering....

Awesome work!!!!


Now imagine me picking my jaw up off the floor and swearing at you in jealousy for far too many things! 
-Chris

[Terry in Australia]

The more I look at that beautiful frame, the more I think any kind of bodywork (apart, perhaps from an all alloy oil tank/seat/fuel tank unit) reduces the visual impact?

I wonder if that beautiful top tube could be used for a fuel tank? Even perhaps employing a top tube with an extra one inch OD to give it a bit more fuel range?

If the (useable) fuel capacity was say, two gallons, with my back as bad as it is, that would give me close to 100 miles between fills, which would be more than long enough to be sitting in that "racers crouch" riding position? Cheers, Terry.  

[HavocTurbo]

The more I look at that beautiful frame, the more I think any kind of bodywork (apart, perhaps from an all alloy oil tank/seat/fuel tank unit) reduces the visual impact?

I wonder if that beautiful top tube could be used for a fuel tank? Even perhaps employing a top tube with an extra one inch OD to give it a bit more fuel range?

If the (useable) fuel capacity was say, two gallons, with my back as bad as it is, that would give me close to 100 miles between fills, which would be more than long enough to be sitting in that "racers crouch" riding position? Cheers, Terry.  

Heh couldn't have said it better myself. I agree.

[mec]

By the way I like the use of oval/flat stock for the swingarm; any reason that over round or square?

to my mind, it is the summ of all aspects that f.w. egli prefered the oval/flat tubes.
rigidity as torsional flexes similar to round tubes, better optics as sharp edged square ones, more freedom to wider tyres.
as praxis showed, eglis decision was the right way.

I wonder if that beautiful top tube could be used for a fuel tank? Even perhaps employing a top tube with an extra one inch OD to give it a bit more fuel range?

at the moment the 100x1.5 top tube could incorporate 4L fuel. thats not much. moreover a fueltank similar shiluette or body makes sense for our familiarized riding style.


btw: yesterday I realized my quick (dis)connectors for the brake and taillight. now it takes 4 seconds to remove the complete seat.
today i spent 4 hours on the mill to produce the ??......do not know the name, I will try to explain:
if you move the handle bar from the max right to left position, you will either squeeze your fingers between the fairing or the upper clamps will damage the fuel tank. to prevent this, modern bikes can adjust the movement of the steering axis. yes, I made such an "movement limiter". I am sure, you know what I mean.

mec

p.s.: countdown started, tuesday planning to start the engine first time.
engine pics: http://www.humyo.com/6644029-200545107

[Spikeybike]

today i spent 4 hours on the mill to produce the ??......do not know the name, I will try to explain:
if you move the handle bar from the max right to left position, you will either squeeze your fingers between the fairing or the upper clamps will damage the fuel tank. to prevent this, modern bikes can adjust the movement of the steering axis. yes, I made such an "movement limiter". I am sure, you know what I mean.

mec

in the states it's a "fork stop"

[cben750f1]

OMFG!!!! you are a complete legend!!!!!


Bening a machinist myself, your work is brilliant!!!!!


keepin close tabs on the build...


peace

[mec]

yeah, today was a day of celebration.
four kicks and the engine was alive! despite the fact that we had -5°C the cobra engine run fine. after warming up it had a very quick throttle response, everything fine with oil pressure, no oil leaks except one drop from a crankshaft stud (ups, never seen this before). the old kröber speedo refused from time to time, same as in the old days

today I finished fitting the fairing glas to the fairing. the next days everything is ready for paint - egli red.

did I mention, the ready to start bike (without fuel and oil) weights 168.5kg. this was a little disappointing to me, cause I remember my bike with similar features weighted 162kg in the 70ies. but the old one had a 35er ceriani (now there is a 38er marzocchi front fork which will add 1.5kg for sure), the frame was done with 22mm and 26mm tubings (mine has 28mm, plus 1.5kg?), the old one had bilstein shock absorbers without all the setup possibilities (plus 0.5kg?), today we go with steel reinforced tyres (not so in the old days, plus 2kg?).

have a nice day
mec

[j-conn]

official winner of 'best bike of '08' in my mind.

denied... 

saving the best for last; first post was on dec 31st...
wow wow and wow

[Ecosse]

official winner of 'best bike of '08' in my mind.
saving the best for last; first post was on dec 31st...
wow wow and wow

despite the fact i really love all kinds of bikes (original-unrestored, trad cafe, small cc, etc...) i tend to agree with ya.

mec, regarding the finished weight, your disappointment hopefully is tempered by the thought that you may just have a better overall machine than before. i know... blasphemy! but those 14 lbs. seem to make a better handling bike, no?

[bunghole]

Man!

It's just not cool to come to a forum where most of us are piddling around spending months if not years on doing a mild custom cafe or something and showing us the plated frame and titanium bits.

I for one am offended.

I think I'll build a carbon fiber jet plane and post my progress on some hang glider website.

I'm kidding of course.  But maybe not completely

[Ecosse]

I think I'll build a carbon fiber jet plane and post my progress on some hang glider website.

  thanks man i needed that!

[Terry in Australia]

did I mention, the ready to start bike (without fuel and oil) weights 168.5kg. this was a little disappointing to me, cause I remember my bike with similar features weighted 162kg in the 70ies. but the old one had a 35er ceriani (now there is a 38er marzocchi front fork which will add 1.5kg for sure), the frame was done with 22mm and 26mm tubings (mine has 28mm, plus 1.5kg?), the old one had bilstein shock absorbers without all the setup possibilities (plus 0.5kg?), today we go with steel reinforced tyres (not so in the old days, plus 2kg?).

have a nice day
mec

Ha ha, I wouldn't worry about it mate, your scales are probably a lot more accurate than the ones you had back in the 1970's! Anyway, 168.5 is still light, even by modern sportsbike standards.

Don't forget to post pics of the finished machine, we're all waiting, and drooling.................. 

[mec]

seem to make a better handling bike, no?

yes and no.
my old bike handled well. there was nothing to complain about. due to the circumstance that the tires are better now, allowing more cornering speed and putting more stress on the chassis, the choice for a stronger front fork and frame, better shock absorbers is the right way.

Man!

I think I'll build a carbon fiber jet plane and post my progress on some hang glider website.

hi hi, that reminds me of a thread I started in 2006. it was in RC Universe. I built a Model Turbo Prop Aerobatic Plane, powered by a turbine and a full adjustable pitch propeller with reverse thrust. it was the first turbine powered modell plane with reverse thrust in the air world wide (as known to public). 


there is one thing I am concerned with: during the first run I measured the current. at 4000rpm ignition and 3Ohm coils draw 4A. at 5krpm 5A. switching light on, another 5A. ok, light is for the sheriffs only. but without light the engine will run + 1 hour. then my 9.6Ah LiFePo accu will be empty or dead 
I fear my calculations are correct. one hour, thats not much. enough for racetrack (charging time is only12 minutes) , but I planed to break in the engine on the streets in our lovely country. it seems that the most important device will be the mobile phone during first ride 

pics of the finished bike will come as soon as it painted and "decal-plated".
in the meantime I will have enough time for drilling screw heads for the safety wire.

mec

[retro rocket]

Like Terry said, keep those pictures coming...

Mick

[Terry in Australia]

there is one thing I am concerned with: during the first run I measured the current. at 4000rpm ignition and 3Ohm coils draw 4A. at 5krpm 5A. switching light on, another 5A. ok, light is for the sheriffs only. but without light the engine will run + 1 hour. then my 9.6Ah LiFePo accu will be empty or dead 
I fear my calculations are correct. one hour, thats not much. enough for racetrack (charging time is only12 minutes) , but I planed to break in the engine on the streets in our lovely country. it seems that the most important device will be the mobile phone during first ride 

mec

Can you carry a spare battery, or some other lightweight "plug-in" device mate?

I like the idea of no alternator either, (less weight, more cornering clearance, nicer aesthetics/more horsepower) so is there a lightweight (lithium?) back up battery available?

It'd be a real shame to have to retro-fit an alternator? Cheers, Terry.

[Jerry Rxman Griffin]

Mec,

I really hate to suggest this but you could always switch to 5 ohm coils for a little less draw. What kind of draw will it have at 10,000 rpm? Probably suck the battery inside out  Those 3 ohms sure throw a nice spark but are very voltage thirsty. www.CycleXchange.net has a smaller, lighter after market alternator you could consider.   

[mec]

hello,

yesterday I took fuel tank, seat and fairing to the varnisher. it will take up to two weeks, he said 
plating the frame took 4 weeks. I wonder what is going on in this time. does the artist prepare himself mental or spiritual??
when you are willing to work, plating or varnish is done within two days at the max. I do believe, the time when our worldwide finacial or economical situation will be at its worst, this upmentioned work will take a few hours.

two weeks waiting in frustration 


ad electric issues: I will go for a spare batterie.
nevertheless I am interested in where you can buy that alternator set:

(picture from M3 racing)
M3 racing says TBA. as far as I remember one or two years ago ditto.

in the meantime some close view pics:
kröber speedo, oil pressure gauge, ignition switch and light switch


festo airpressure gauge for the frame tubes (between steering tube and fuel tank bracket)


when it lacks a lightweight M6 nut, I have to do it by my own (aluminium)


oil drain screw, oil tank


lockheed calipers with mounting plates for the 315mm rotors (yet the calipers do have steel pistons, it will be an absolutely must to replace them by aluminium ones  )



have a nice day
mec

[Ecosse]

once again mec first class... and a bit of a tease. 

like showing just a bit of sofia loren's leg.

[Terry in Australia]

That looks fantastic mate, what's the air pressure gauge for? I like your "dashboard" layout, nice and simple.

I can understand your frustration regarding the time you need to wait for your painter to finish your stuff, but unless he's a "hobby-ist", he's probably got other work to finish too?

Anyway, isn't it winter in Austria? I would have thought a snowmobile would be more practicle this time of year? Cheers, Terry.

[Ecosse]

sorry if i missed it; where's the tach from?

[mec]

what's the air pressure gauge for?
Anyway, isn't it winter in Austria?

the air volume of all frame tubes are in contact all together. the air pressure gauge indicates if there is a fracture to come (hopefully not).

yes, it is winter  in austria. cannot tell you, how much I hate winter.

sorry if i missed it; where's the tach from?

for (my) clarification: the speedometer shows rpm, the tach shows speed. is this right?
there is no tach. speedo is a german product, we call it "kröber drehzahlmesser". but I think, it is no longer in production.

mec