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> Rebuilding my race car, multi link rear suspension, fg gt flairs
rick 918-S
post Feb 21 2006, 08:19 AM
Post #61


Hey nice rack! -Celette
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Nice work! (IMG:http://www.914world.com/bbs2/html/emoticons/pray.gif) I have one question. Why did you attach the lower control arm (outer hiem joint flat?) It looks like it would bind in full travel and stress the joint. I'm no chassis builder, just an observation.
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914Timo
post Feb 21 2006, 08:19 AM
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Jeroen, don´t even start !!! (IMG:http://www.914world.com/bbs2/html/emoticons/mad.gif)

Mika already has a lot to do before summer. If he starts to design a new front suspension too, we don´t see him next summer at the track. (IMG:http://www.914world.com/bbs2/html/emoticons/cool.gif)

But, maybe during next winter..... (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif)
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914Timo
post Feb 21 2006, 08:25 AM
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QUOTE
Why did you attach the lower control arm (outer hiem joint flat?) It looks like it would bind in full travel and stress the joint.


I am not Mika, but.... Yes, it looks like it will bind in full travel, but it wount. I asked the same and Mika showed to me it really works.
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slugmika
post Feb 21 2006, 12:11 PM
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Hi guys

Luckily our rules doesn't allow to change front to double A-arm. (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif)
And as Timo allready told it does work. We will add small shape to final aluminium parts so that there is even more travel. I just need total of 10cm. travel. And one more thing, that joint is taking all the braking and acc forces and it is much stronger that way.

Mika
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rick 918-S
post Feb 21 2006, 04:32 PM
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Hey nice rack! -Celette
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QUOTE (slugmika @ Feb 21 2006, 10:11 AM)
And one more thing, that joint is taking all the braking and acc forces and it is much stronger that way.

Mika

Oh, I get it. (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) Thanks
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slugmika
post Feb 21 2006, 11:00 PM
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BTW Rick, i love your car (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif)
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slugmika
post Feb 22 2006, 01:24 PM
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Some progress.
Front axle frame allmost ready.(IMG:http://www.914world.com/bbs2/uploads/blog-1140635645.jpg)
detail shot
(IMG:http://www.914world.com/bbs2/uploads/blog-1140635975.jpg)
Friday i will have change to finish the frame. Then i can lift the front to table and start measuring.

Mika
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slugmika
post Mar 12 2006, 02:16 PM
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Some progres.
We got the front axle placed in a table and corrected some misalligments. Now the front and rear are in right place and body is about to be welded. We are going to raise the front about 2" and match the rear to that. Here's some pictures. Thanks BadJuha, Topi and Henkka.
(IMG:http://www.914world.com/bbs2/uploads_offsite/photos1.blogger.com-179-1274376626.1.jpg)
(IMG:http://www.914world.com/bbs2/uploads_offsite/photos1.blogger.com-179-1274376627.2.jpg)
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Aaron Cox
post Mar 12 2006, 02:19 PM
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you guys are nutz!

and i respect that (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/smiley_notworthy.gif)
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slugmika
post Mar 12 2006, 02:38 PM
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Thanks Aaron, i don't know if i'am nutz or just plain stupid (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif)
We also raised the gearbox and engine 28mm. Now there is more room for headers etc. under the car.
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Jeroen
post Mar 12 2006, 03:22 PM
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cool!
got any pics of the front?
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slugmika
post Mar 13 2006, 01:28 AM
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Here is front pictures. Still need to adjust the front with fenders and hood on before welding because it got bended a little while lifting.
I also need to make room for r&p and re route the steering shaft. New pedal box is also under work (if someone needs RSR copy, i have one extra).
Its hard to see from this photo but front was over 30mm angled.
(IMG:http://www.914world.com/bbs2/uploads_offsite/photos1.blogger.com-179-1274377072.1.jpg)
This one shows the angle problem better even though the gap in this one shows mainly the height modification.
(IMG:http://www.914world.com/bbs2/uploads_offsite/photos1.blogger.com-179-1274377073.2.jpg)

Mika
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byndbad914
post Mar 13 2006, 03:08 PM
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shoehorn and some butter - it fits
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Mika,

Hard to tell from the pics but are you running the upper and lower arms parallel at each end?

If not, how are you determining where you are putting your static roll center?
Does it stay above ground through roll front and rear?
How much camber gain are you designing for front and rear? (deg/in or deg/mm is fine as I can convert easily to /in)

I am building a tube chassis car right now and have been beating the crap out of my brain reading Milliken and any other suspension book I can get my hands on to figure out where I want to put roll centers, how much camber gain I want to see on 2" of bump, etc. and was interested in knowing what you are setting yours up at.

Thanks,
Tim
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Jeroen
post Mar 13 2006, 05:05 PM
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wow! looks pretty complex to get it all to close up again
got any info on the RSR pedal box?
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slugmika
post Mar 13 2006, 11:38 PM
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Hi guys
Tim, yes upper and lower are parallel. Now it's easy to adjust roll center just by changing the upper arms angle.
I don't remember how much is the camber gain but i'll check that later from my drawings. Front is stock but just raised 2" so camber gain is as per original.

I don't know if you should follow my way because this is my first multilink suspension. I'am sure we need to test this a lot but that happens after 50cm of snow has melted (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

I'am sick at home so i'll have time to check the camber gain later today.

I'll take some pictures for you Jeroen, later

Mika
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jonwatts
post Mar 14 2006, 12:05 AM
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no rules, just wrong
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You've been sick a lot lately. Take care of youself, man!

(IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif)
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slugmika
post Mar 14 2006, 01:19 AM
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Yes i'we been sick over 4 months now and fever over 2 moths. Finally yesterday i got a call from my doctor and she had "good" news, i have lung fever. That's good news only because finally we have disease named and medicine which should take care of that (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif)

Pedal box pictures are in my blog now.
(IMG:http://www.914world.com/bbs2/uploads/blog-1142320198.jpg)

Progress is slow but i will be there when season opens (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)
Just need my new Koni's so i can make the brackets and make needed modifications to tub (IMG:http://www.914world.com/bbs2/html/emoticons/sawzall-smiley.gif)


Mika
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slugmika
post Mar 27 2006, 04:36 AM
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Koni's just arriwed so i started to make brackets for them.
Here is couple of pictures about progress. I <!-- emo&:sawzall: -->(IMG:http://www.914world.com/bbs2/html/emoticons/sawzall-smiley.gif)<!-- endemo --> off the shock towers so i will have
more room to make the brackets.
Suspension is also welded to chassis but it's still attached to table so i can make the new supports for transmission.
(IMG:http://www.914world.com/bbs2/uploads_offsite/photos1.blogger.com-179-1274377112.1.jpg)
(IMG:http://www.914world.com/bbs2/uploads_offsite/photos1.blogger.com-179-1274377113.2.jpg)
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slugmika
post Apr 2 2006, 01:02 PM
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Rear is allmost ready. Only thing to do is the shock mounts.
(IMG:http://www.914world.com/bbs2/uploads_offsite/photos1.blogger.com-179-1274377161.1.jpg)
(IMG:http://www.914world.com/bbs2/uploads_offsite/photos1.blogger.com-179-1274377161.2.jpg)
Front frame is also quite ready.
(IMG:http://www.914world.com/bbs2/uploads_offsite/photos1.blogger.com-179-1274377162.3.jpg)
(IMG:http://www.914world.com/bbs2/uploads_offsite/photos1.blogger.com-179-1274377203.1.jpg)

When fenders arrive, i can make new bumper mounts and oil cooler surround.

I started to make the new pedal box
(IMG:http://www.914world.com/bbs2/uploads_offsite/photos1.blogger.com-179-1274377163.4.jpg)

Thats all for today

Mika
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Aaron Cox
post Apr 2 2006, 01:08 PM
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mika! you are insane!!! looks totally awesome!!!! cant wait to see this bad boy complete!!!

BTW - was this an original finland car?
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