Romans 2005 Toyota Echo

[yoeddynz]

Get your vitz/echo motor complete with a mini shell and a spare vitz right here... 

https://www.facebook.com/marketplace/item/1450112115513943/?mibextid=dXMIcH

[GARDRB]

1 hour ago, Roman said:

I'm also going to have a go at casting some bump stops from polyurethane with a 3d printed mould. 
As I figure it might just be fun to do, then makes it easy to try some variations later on if it works well.
So I'm just printing a very thin walled tube. So then I'll use lots of mould release wax on it, then after pouring hopefully I'll be able to just break it off. 

Doesn't making them cone shaped make them progressive? Maybe taper the mould out from the bottom??

[Roman]

Yeah 

Maybe @cletus idea of a solid spacer with a shorter bump stop is a better plan than what I'm thinking.
This way can have a cone shape or whatever be more effective. 

I'm trying Shore A 60 simply because that's what I bought a while back to fill my engine mounts. Might be a little on the soft side for a bump stop. 
Also it might be a disaster and impossible to get out of the mould. haha.

The ones I've ordered are this sort of shape, 85mm long uncompressed. So probably compress down to smaller than I'd like. 

[Roman]

1 hour ago, shrike said:

Silly question but the shocks are still in good nick yeah? are they inserts or a sealed unit? if inserts you can put spacers on the bottom to give more height so that it bottoms out higher if that makes sense (similar to running MR2 shock inserts in I think it was KE70 struts etc)

Wondering if you need shorter travel shocks?

Haven't played with suspension in awhile so may not be making sense, please correct if I am mistaken

On the front, I am using Ohlin coilovers which have an inverted strut, which is some sort of wizard magic thing that I'm definitely not going to try open haha. Not an insert.
I'm not sure if this means the bump stop is actually internal down in the guts of it? 
I dont think there's a bump stop on them otherwise, anyway. The front is not a problem.

On the rear, the spring is separate from the shock. So the bump stop just slides over the shock body.
So I can pull the shock in and out really easily. So it's not a drama to experiment with it a bit.

 

[Roman]

1 hour ago, yoeddynz said:

Get your vitz/echo motor complete with a mini shell and a spare vitz right here... 

https://www.facebook.com/marketplace/item/1450112115513943/?mibextid=dXMIcH

Hah! My partner has a mini, and she's been wanting to put a more modern motor in it. 

I've told her 1NZ is a good idea and thats why I'm hoarding parts.  Nice to know it looks to be actually doable.

[GARDRB]

4 minutes ago, Roman said:

Yeah 

Maybe @cletus idea of a solid spacer with a shorter bump stop is a better plan than what I'm thinking.
This way can have a cone shape or whatever be more effective. 

I'm trying Shore A 60 simply because that's what I bought a while back to fill my engine mounts. Might be a little on the soft side for a bump stop. 
Also it might be a disaster and impossible to get out of the mould. haha.

The ones I've ordered are this sort of shape, 85mm long uncompressed. So probably compress down to smaller than I'd like. 

Dude those are sex toys, not bumpstops, you're on the wrong part of aliexpress again

[Roman]

Ahhh crap was that the wrong pic? 

Buttplug_with_hole_for_beetles_to_crawl_into.jpg

[Themi]

Use tape/paper/plastic to make a sleeve attached directly to the shock. Pour the urethane in place on the shock! No need for mould release, but if it doesn't work you would need to cut them off and make one hell of a mess.

[mjrstar]

The inverted shock will still be an insert. The big fat shiny bit you see is just the shock body which slides in a linear bushing. The shaft of the shock attaches at the bottom just like a conventional shock does at the top..

They are actually pretty easy to dismantle once you know what you are doing. I had a set of aragostas which needed a few linear bushing replace over the years.

[ajg193]

Definitely want at least a little bit of taper on the mould, will make it a whole lot easier to get the casting out.

 

These things have like a 1.5 deg taper and are used for making microscopy samples, really quite easy to get the casting out afterwards.

https://shop.buehler.com/castable-mounting-molds

https://shop.buehler.com/content/images/thumbs/0011139_samplkup-30mm-12-pcs.jpeg

[Roman]

It's printed thin so that I can just break the mould off the outside. (and inside, hopefully...)

Now have to wait 48 hours to play the "will the damn thing actually come out" roulette.

By which stage, I'll have probably thrown these in the bin and the ones I ordered will have turned up haha. 

Bloody good fun making a mess though.

[h4nd]

Can I humbly suggest you do another crowd funding before drags? If you have $$/unaccountable slushfunds in unmarked Colombian pesos which definitely don't smell of bananas/spare block on the bench at home, I reckon that'll translate to 0.177 @RUNAMUCKunits of reduced mechanical sympathy, probably good for about  , yeah, about 9.5ms per gear. I for one would throw beer money at that, just for the repeat ensuing shits and giggles, like aiming for actual real max RPM analysis.

[GARDRB]

18 minutes ago, h4nd said:

Can I humbly suggest you do another crowd funding before drags? If you have $$/unaccountable slushfunds in unmarked Colombian pesos which definitely don't smell of bananas/spare block on the bench at home, I reckon that'll translate to 0.177 @RUNAMUCKunits of reduced mechanical sympathy, probably good for about  , yeah, about 9.5ms per gear. I for one would throw beer money at that, just for the repeat ensuing shits and giggles, like aiming for actual real max RPM analysis.

There needs to be a romandave patreon

[Roman]

Dont worry, it will be full send at the drags.
At a track day there's not quite so much benefit from revving it right out. 
But at the drags, its mandatory.

I've got a few extra tricks up my sleeve this time, but it'll mostly be the weather gods I need to pray to! 

[GARDRB]

A couple of Prius engines would fetch a premium 10 days out from OS Drags

[keltik]

13 minutes ago, GARDRB said:

A couple of Prius engines would fetch a premium 10 days out from OS Drags

Worthless without the Dave and wreckers never include that

[yoeddynz]

On 29/11/2022 at 13:10, Roman said:

Hah! My partner has a mini, and she's been wanting to put a more modern motor in it. 

I've told her 1NZ is a good idea and thats why I'm hoarding parts.  Nice to know it looks to be actually doable.

It was meant to be.

[Roman]

Previously when I've been to the drags I've had a play with tyre pressures and thats about it.
60ft time should be able to get down to under 2.0, but maybe only with a prepped track.
But I reckon 60ft time improvements from mechanical changes will be possible too.
The last time I ran, which went a little slower than best. I think I had lowered the car a little bit but not reset the alignment. So it was pretty darty off the line. 

So I have a few tricks to try this time. 
Firstly, lowered it all as far as it'll go front and back. 
Then I zeroed out the front camber just using a big steel set square thing. 
So the tyres look a bit mexican this way, but they nearly tucked under last time so must have been a few degrees of camber.
Then thought I'd try set the toe as well.
Sometimes you need to work with the equipment you've got, and sometimes the equipment you've got is some motherfucking LAZERZ



This was a bit fiddly but worked well enough eventually. Got the wheels parallel then added a tiny squeak of toe out.
Previous times I also forgotten to adjust the rebound settings on the front shocks, (usually set about half way) so I'll set these to as stiff as they will go as well. 

Then for the rear, I have made some bump stop spacers which essentially means ride height is sitting on the bump stops.
So when it launches the rear stays where it is (hopefully)
They are printed solid from the nylon carbon fibre stuff, but I'm going to wrap them in carbon fibre to make sure they dont explode.
Hopefully that helps the 60ft time a bit. 
It's really easy to get the rear shocks out, so will fit these after arriving rather than having to drive there like this. 





In summary, super excited for drag day!
Will be fun to see if these things help (or not)
Gonna be good.

[h4nd]

I'm sure that @Romandayf already has a phone alert that tells him about these ... Pick-a-Part Vehicle Alert: Toyota Prius NHW20 10/03-06/09
https://www.pickapart.co.nz/webpage/WebPage.asp?Ref=10381&VehicleID=175355&Location=pickapartconz

[Roman]

Yeah it's not worth it for those. 
$330 for a PickaPart motor where you have no idea on KMs, or if the motor is even alive... and you have to bust your arse for a day to remove it.
When it's sub $500 for a wrecker motor with low km and a warranty (that I instantly void...)
However if any more NCP13s come through I'll spent the time to go get the box out every time haha.

Holy shit a brick there's not many sleeps left till drag day. 
Legitimately more exciting than Christmas. 
Hopefully the weather holds up!