This quarantaine is going to cost me...
Cannot resist buying lightweight fasteners for De Kikker.
Sofar only a few that are in sight so ´looking good´ sort of a half valid reason but it nevertheless is plain silly.
Ok, no not anodised in colour; all natural finish, so again sort of a half excuse.
Are there any REALLY big bolts/nuts on this car? Replacing those is at least a bít of an argument with some weight to it :-[
Can only think of things related to hubs, cross member, tie rods. That sort of stuff.
Engine mounts?
Flywheel? or have you done that? Lost track.
Quote from: Ardent on March 31, 2020, 21:11Can only think of things related to hubs, cross member, tie rods. That sort of stuff.
Engine mounts?
Flywheel? or have you done that? Lost track.
Thanks Jason.
Not done nor going to do the flywheel.
As to nuts & bolts will crawl under the car and have a look.
As a rule I am not cool with swapping out suspension fasteners nor engine mount bolts. Although titanium is ´stronger´ as in taking more load before breaking, it is lées strong as in more flexible and more susceptible to metal fatigue than steel. The mega-expensive motorcross frames BSA made for their factory man are legendary failures illustrating this.
Not something I would do. But the only big things I could think off.
Quote from: Ardent on March 31, 2020, 22:49Not something I would do. But the only big things I could think off.
I think I observed it earlier but the MR2 engineers did a real, réaly good job with the weight reduction of their brain child.
Even if you are prepaired to spend quite a bit more on materials then they could, it stíll is a challenge to not drop the ball.
Quote from: Petrus on March 31, 2020, 21:53Quote from: Ardent on March 31, 2020, 21:11Can only think of things related to hubs, cross member, tie rods. That sort of stuff.
Engine mounts?
Flywheel? or have you done that? Lost track.
Thanks Jason.
Not done nor going to do the flywheel.
You sure about that? It's a BIG weight saving, and due to the lightness of the car there is honestly minimal interference or impact on pulling away. I've got a Competition clutch one fitted and it's honestly a lovely thing..
Quote from: jvanzyl on April 1, 2020, 08:46Quote from: Petrus on March 31, 2020, 21:53Quote from: Ardent on March 31, 2020, 21:11Can only think of things related to hubs, cross member, tie rods. That sort of stuff.
Engine mounts?
Flywheel? or have you done that? Lost track.
Thanks Jason.
Not done nor going to do the flywheel.
You sure about that? It's a BIG weight saving, and due to the lightness of the car there is honestly minimal interference or impact on pulling away. I've got a Competition clutch one fitted and it's honestly a lovely thing..
I have the same flywheel on too, while its a positive change it changes how the car behaves and pulling away is a bit harder. It revs a bit faster too but not sure how its going to behave with the SMT. With not enough revs the car would shake a bit but its down to learning to drive it again.
Quote from: Nvy on April 1, 2020, 08:55Quote from: jvanzyl on April 1, 2020, 08:46Quote from: Petrus on March 31, 2020, 21:53Quote from: Ardent on March 31, 2020, 21:11Can only think of things related to hubs, cross member, tie rods. That sort of stuff.
Engine mounts?
Flywheel? or have you done that? Lost track.
Thanks Jason.
Not done nor going to do the flywheel.
You sure about that? It's a BIG weight saving, and due to the lightness of the car there is honestly minimal interference or impact on pulling away. I've got a Competition clutch one fitted and it's honestly a lovely thing..
I have the same flywheel on too, while its a positive change it changes how the car behaves and pulling away is a bit harder. It revs a bit faster too but not sure how its going to behave with the SMT. With not enough revs the car would shake a bit but its down to learning to drive it again.
Ah yes - forgot about it being an SMT... I'm sure there's going to be someone on Spyderchat who will have discussed their experiences with doing this..
The OEM flywheel enables me to drive the car like a Jeckyll and Hyde.
A light one and it´s more of a but also ónly a Hyde.
Secondly the heavier flywheel is súch a boon in hairpins; it simply does nót bog dowm and remember that I live in the Eden of Hairpins ;)
Washe my face, put on dry shirt and socks: When looking underneath the car the sky opened and showered the countryside and all outside...
Not replacing any nut or bolt there.
So I am stopping at just a few mainly cosmetic ones in the engine bay and the M10 seat bolts. Saves in total about the weight of a hamster ;D but then it is a cosmetic thing I can blame on the thread about smartening up the engine bay :))
Last year I found that avoiding franchises with a big yellow M and places like it had a noticeable impact on handling..
Quote from: Snelbaard on April 1, 2020, 11:08Last year I found that avoiding franchises with a big yellow M and places like it had a noticeable impact on handling..
Have shunned processed like-food places since forever.
The personal weight challenge was met by cycling around through the mountains daily. Also regularly cycled to/fro Málaga love; about 60 km. one way and 3.000 hight meters...
That got shot in one foot by the hip and now in the other by the quarantaine.
Will get it sorted quickly enough as soon as I am allowed back on the road.
Quote from: Petrus on March 31, 2020, 19:43This quarantaine is going to cost me...
Cannot resist buying lightweight fasteners for De Kikker.
Sofar only a few that are in sight so ´looking good´ sort of a half valid reason but it nevertheless is plain silly.
Ok, no not anodised in colour; all natural finish, so again sort of a half excuse.
Are there any REALLY big bolts/nuts on this car? Replacing those is at least a bít of an argument with some weight to it :-[
Having changed the oil today. I thought of you and weighed he sump plug. 23g.
Must a saving to be had there.
Quote from: Ardent on April 5, 2020, 20:47Having changed the oil today. I thought of you and weighed he sump plug. 23g.
Must a saving to be had there.
14 gramms to be exact.
The weight of the plug and the fact you can save half to two thirds illustrates that replacing them for weight saving purpose is rather fruitless.
Even if you would be able to swap half by titanium and half by aluminium you still only get a weight saving of 7/12th. In ather words 700 grams on 1,2 kilos of bolts and that is quite a bagfull.
Makes a carbon fiber bonnet cheap and acrylic windows a bargain.
So maybe titanium wheel hub bolts?
I think these ones will fit:
https://pl.aliexpress.com/item/4000812581078.html?spm=a2g0o.cart.0.0.60083c00JRptdm&mp=1
Quote from: tom256 on April 12, 2020, 09:00So maybe titanium wheel hub bolts?
Not a good idea. Titanium is more flexible ánd has weaker resistance to metal fatigue: A particularly bad combination on wheels/suspension.
When I fitted Enkeis, opted for steel wheel nuts for a reason.
Still saved the best part of a kilo on those.
Quote from: Petrus on April 12, 2020, 09:21Quote from: tom256 on April 12, 2020, 09:00So maybe titanium wheel hub bolts?
Not a good idea. Titanium is more flexible ánd has weaker resistance to metal fatigue: A particularly bad combination on wheels/suspension.
When I fitted Enkeis, opted for steel wheel nuts for a reason.
I thought that about titanium, but I was corrected by the guy I dealt with at Titanium International. He told me that it was available in quite a few alloys with very different tensile and torsional characteristics.
It's just that most of those alloys were very expensive special-order items.
Quote from: Carolyn on April 12, 2020, 09:24Quote from: Petrus on April 12, 2020, 09:21Quote from: tom256 on April 12, 2020, 09:00So maybe titanium wheel hub bolts?
Not a good idea. Titanium is more flexible ánd has weaker resistance to metal fatigue: A particularly bad combination on wheels/suspension.
When I fitted Enkeis, opted for steel wheel nuts for a reason.
I thought that about titanium, but I was corrected by the guy I dealt with at Titanium International. He told me that it was available in quite a few alloys with very different tensile and torsional characteristics.
It's just that most of those alloys were very expensive special-order items.
Same thing aluminium. There are véry high tensile alloys which after heat treatment come near, in some properties even surpass basic low carbon steels.
Now compare like for like, thus enter modern high tensile steel alloys as well and we get into WOW territory.
On road cars (motorbikes) the materials used are an optimum between price and strength for the purpose which puts steel ahead in the game. Replacing such takes sóme thought beyond ´titanium is strong´ and ´aluminium is light´.