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Ericholm 250 SWB Build thread

10 Sep 2015, 8:02pm
Finished the front end wiring today, fully tested and functional, Wires also in place for fog lights when fitting after much more work is completed.

DSCN7759 by eric holm, on Flickr

DSCN7761 by eric holm, on Flickr

DSCN7763 by eric holm, on Flickr

DSCN7768 by eric holm, on Flickr

DSCN7774 by eric holm, on Flickr

DSCN7776 by eric holm, on Flickr

Oh and 55 tyres fitted on all corners now. Standard rear suspension is too high for my liking so going to install coilovers on rear so I can adjust as required, fine tuning if you like. I've noticed on the front that the tyres just rub up against the inside wheel arch on full lock, so will be adding 5mm spacers to fronts as plenty of arch space for wheels to come out a little.
10 Sep 2015, 8:07pm
Has anyone got a solution for a bonnet stay as dont want to carry around a 2m piece of 2x4 :boink:
10 Sep 2015, 9:10pm
ericholm wrote:
Has anyone got a solution for a bonnet stay as dont want to carry around a 2m piece of 2x4 :boink:


I use a ~1m length of 2.25" plastic waste pipe. It engages the bonnet catch spring/pins at the top and a convenient bolt head by the radiator. It lives in the boot but could be stowed under the bonnet using "Terry" clips.
11 Sep 2015, 9:43am
Hi Eric,

Do you have any pictures of the installation of the door panels and the door handles with the lock mechanism?

Mike 65
11 Sep 2015, 10:21am
I use a walkers stick/pole thing. If you're u twist it than it shrinks to half the length or extends to just over a metre. Sits in the boot or behind the seats without looking too out of place.
11 Sep 2015, 1:51pm
Mike65 wrote:
Hi Eric,

Do you have any pictures of the installation of the door panels and the door handles with the lock mechanism?

Mike 65


Nope, not yet as not fitted them, just lodged them up for photos, will do it when I get around to doing that job, shouldn't be too long now.

Cheers.
12 Sep 2015, 8:56am
Thanks WCA and IanA for the bonnet stay suggestions, looks like we have to be creative, The bonnet section will only get heavier as I add fog lights and 'other' elements.

:tea:
12 Sep 2015, 11:45am
5mm front wheel spacers arrived and fitted today, perfect clearance now on front wheels at full lock

All wiring crimped with spade terminals, allow easy removal for spraying.

Coilovers fitted on all for corners and adjustments made

Next job, remove drivers side hoop and cap off, then I will start on the doors for real.......nervous :eusa_pray::shock::twitch::noidea::eusa_eh: :eusa_think:
12 Sep 2015, 12:25pm
The bonnet prop problem could be fixed by stronger hydraulic struts. If anyone knows of a company that makes these we could commission several sets to keep the cost down? They would need a BMW one to test for Newtons/metre and with the weight and length of the bonnet work out the extra strength. It will not make any extra stress on the fibreglass bonnet as it works on the hinge mechanism not the bonnet itself.
12 Sep 2015, 1:17pm
Nubodi Automotive wrote:
The bonnet prop problem could be fixed by stronger hydraulic struts. If anyone knows of a company that makes these we could commission several sets to keep the cost down? They would need a BMW one to test for Newtons/metre and with the weight and length of the bonnet work out the extra strength. It will not make any extra stress on the fibreglass bonnet as it works on the hinge mechanism not the bonnet itself.


If it helps, I'm awaiting costs from an OEM supplier for a batch of 10 off bonnet struts. I'm assuming there will be an off the shelf solution available from a production car rather than manufacturing something bespoke. The formal request was made via my company so I'd expect a reasonable discount.
I'll post the prices when ready, and happy to supply them at cost to the forum.
12 Sep 2015, 2:30pm
Put me down for a couple of sets, one for the Z300S and one for the SWB front end when I get it
12 Sep 2015, 3:16pm
Be careful, I dont know of any OEM struts that would be strong enough to take the considerable weight with such a short length. I'll have several sets if they work though (dependent on cost of course).
12 Sep 2015, 6:24pm
If it works, I only need 1 :eyebrows:
12 Sep 2015, 7:00pm
Nubodi Automotive wrote:
Be careful, I dont know of any OEM struts that would be strong enough to take the considerable weight with such a short length. I'll have several sets if they work though (dependent on cost of course).


Wise advice, but the company I've contacted make OEM struts for the car industry as well as those used on boats and planes. If they say they have one that works I'd like to think it will. As I said, I'm hoping for an off the shelf solution, because whilst the company could provide a bespoke strut it's likely to be expensive especially in the small quantities we require.

I've estimated the mass of the SWB bonnet as 75% greater than the Z3. Any chance you could weigh both and post the results?
13 Sep 2015, 12:25pm
its not a question of weight....
It's a matter of too much mass upfront.....
So weighing the 2 is not the solution....
13 Sep 2015, 2:34pm
WorldClassAccident wrote:
Fit the bonnet and then use a hook scale like they use for fishes hooked under the front. This will give the force that the strut will need to resist.

Here is a digital e ample but there are cheap non digital ones too
http://www.amazon.co.uk/50Kg-Hanging-Digital-Weighing-Scale/dp/B004IJDX3U


That will give the weight (or force) at the front, but it needs to be where the strut is fixed because it's all to do with the leverage. It may be possible to use the measure on the original BMW bonnet and compare it to the Tribute bonnet to get a comparison though (not exactly the same length I realise, but close). This would give a multiple for the new strut. BTW what rating are the originals?
As a comparison, the struts on the Fiesta tailgate were 420NM, but the light boot lid on my Quantum only needs 120nm struts!
13 Sep 2015, 7:57pm
Just slightly off topic a minute can I ask what the gap between the top of the rear tyre and the wheel arch is for lowering reference if you get a chance? Many thanks
13 Sep 2015, 9:06pm
mobilerobbie wrote:
its not a question of weight....
It's a matter of too much mass upfront.....
So weighing the 2 is not the solution....


How heavy are you?
13 Sep 2015, 9:21pm
smash wrote:
Just slightly off topic a minute can I ask what the gap between the top of the rear tyre and the wheel arch is for lowering reference if you get a chance? Many thanks


Hi, on mine its 40mm, I have coilovers and they are pretty much on the lowest setting.

:faint:

Cheers.
14 Sep 2015, 6:54am
Thanks that's perfect.

Plenty of food for thought
15 Sep 2015, 11:01am
y cymro wrote:
If it helps, I'm awaiting costs from an OEM supplier for a batch of 10 off bonnet struts. I'm assuming there will be an off the shelf solution available from a production car rather than manufacturing something bespoke. The formal request was made via my company so I'd expect a reasonable discount.
I'll post the prices when ready, and happy to supply them at cost to the forum.


A pair for me as well please.
Thanks, Bob.
15 Sep 2015, 12:29pm
if it works I would like 4 sets, depending price