Dave-gerous E21

[LJ851]

How long is your shaft ? heh heh. I will see if i can find that formula for diameter vs revs. Also , the lighter the shaft is the smaller it can be. 3 inch is way better than what you had before, it would be nice to know the max safe speed of this new shaft.

[Dave-ger]

thanks dudes! I'm really excited about having it fixed, but I can't really drive it too well with all the snow there is around here right now.. oh well. having a cold blooded rotary, bald front tires, and no defroster at all will do that to you.


LJ, on page 10 you can see the stuff about the drive line. the original drive line I was running was home made and it was a bit smaller than 2.5". a professional drive line shop told me to just make one kind of like that after seeing my mock up drive line and not being able to help because of the complications with the BMW yoke at the back end. after the crash, I was considering something like a 240sx rear sub frame so I could run a diff that bolts to a more conventional flanged yoke, but I came up with the idea for the adapter. the different drive line shop I went to this time said that the RX7 yokes that I planned to use this time around front and back ran the 2.5" tube that was simply too small for the length I needed, and that could cause it to whip and kink... like my old drive line did... so he upped it to 3" with the dodge slip yoke setup and the adapter ring on the RX7 yoke. The distance is also shorter between the trans and the diff than factory cause the output on the RX7 tranny is further back than the stock one. hopefully that answers your questions, and yes, I did learn why some cars and trucks have carrier bearings the hard way... I don't intend on doing that again. the fact that my old drive line was not balanced at all probably didn't help either.

I can't be too upset with the drive line shop that suggested I just make a drive line all ghetto like, cause I'm the one who did it. Also, I can't beat myself up too much, because nobody ever told me anything about the drive line diameter being such a big deal, they just told me about the fact that it was out of balance. I'm pretty sure the balance issue had little effect on the outcome. I could be wrong though. I shouldn't be having that problem ever again for two reasons: I don't plan to go that fast again, nor did I know I was going so fast, and I now have a legit drive line.

[CHIF8008]

just saw this. man i love the car and your truck. i swear just looking through this makes me think that your part of my family. right on the money with what and how my fam dose things.

sucks to hear about the crash- but happy to see her rolling again. Props

[LJ851]

Did you have a professional drive line shop make your first driveshaft ? There is a reason bmw uses 2 piece shafts, there is no way you could spin a shaft that long and thin !! Im glad you escaped injury last time , are you sure that your new shaft can spin the required rpm for top speed ? I talked to several high performance driveline shops when i was considering a 1 piece shaft for my 2002 project and 1/3 of them said they would not build me one and rest said it would need to be 3.5 or ideally 4.0 inch in diam. to turn 6500-7000 revs. I believe there are formulas for this purpose (rpm vs length) and id hate to see this happen to you again. good luck !

[sandlock]

great 2nd save man. there's something to be said about trials along the way.

[hi its me alec]

One of my favorite projects on here, I loved the dinosaur. You should get some videos up sooner or later

[pureaudio]

Love this car so much, keep it up.

[Simon S]

so much win in this thread !

Fucking love it.

Thanks for sharing.

[Dave-ger]

drive line: it had to be upsized from the 2.5" tube an RX 7 would run to a 3" tube because of the length so it wouldn't whip and kink like the old one did. it has some kind of dodge slip yoke at the front which fits into the RX7 trans perfectly, at the back is an RX7 yoke, but there is a machined sleeve to make it fit the 3" tube.





quick and dirty drive line safety strap:


exhaust:



My car is alive again!!!!



I wired up the factory tach, it will do 8k with no trouble at all.

[Dave-ger]

So, the mount for the fuel cell is in, the fuel pump is mounted, and the send line is complete. I need to get some more fuel line, then do the return and vent lines and some wiring... then... WAMMY! I can put some fuel in it and start it up.


here you can see where I routed the sending line, the return line will be in there too. it's a factory conduit thing that the vent line was in before.


my return fitting and my vent fitting. the vent one is the taller one, it has one of those ball deals in it for safety.


I decided this was the best place for the fuel pump. I wanted it easy to access, and I didn't want to hit it with too much junk from my trunk.


here you can see the ghetto way I mounted my ghetto fuel cell mount. The front is just bolted right to the sheet metal, and the other mounts towards the back of the car are just angle iron tabs.




and here you can see the other end of the fuel line conduit. it exits in line with the factory send and return hard lines. On the send line, the guy at fluid connectors dismantled the factory bolt on fitting for me so I could just hose clamp the brand new fuel line on there. That store is swell!

[Dave-ger]

thanks dudes

should be a pretty smooth process to finish fixing the car now.

sorry, these some how got way out of order.









I did some polyurethane caulking in the bushings cause it seemed like it couldn't hurt to try, but the tube kind of fell apart and it made a really big mess... so hopefully they are at least better than they were, I know they definitely look worse... I guess I'll know if that was a good idea or not soon enough.






it's official, this car now has both sub frames modified.

[trackjunkie21]

I love it. Reminds me of my parents' old car.
Some idiot caused my mom to drive it into a tree.
I love the stance.

Was it the guy who chased her out of the kitchen?






loljk :D

[freeride53]

I love it. Reminds me of my parents' old car.
Some idiot caused my mom to drive it into a tree.
I love the stance.

[Dave-ger]

thank you. most of the work on the drive line adapter isn't mine, but I had a part in it, and I had the concept. I was fortunate to have a member of the car club member draw it up on cad for me and a friend of my dad's help with the final machine work after the water jet work was done.

[delatlanta1281]

Great work. Keep it up man!