205 Shell, what to do?
Discussion
Best update this. Decided Impreza 4wd is the way to go.
http://www.tartantarmac.com/tts-simpug-205-carnage...
http://www.tartantarmac.com/tts-simpug-205-carnage...
205
mm inches
wheelbase 2420 95.3
track/tread (front) 1382 54.4
track/tread (rear) 1339 52.7
length 3705 145.9
width 1572 61.9
height 1372 54
ground clearance
length:wheelbase ratio 1.53
kerb weight 850 kg 1874 lb
Impreza
mm inches
wheelbase 2520 99.2
track/tread (front) 1465 57.7
track/tread (rear) 1455 57.3
length 4340 170.9
width 1690 66.5
height 1440 56.7
ground clearance 155 6.1
length:wheelbase ratio 1.72
kerb weight 1280 kg 2822 lb
So yeah, defo need arches. I have a set of Rallye ones but think I'll go box arches instead.
Let's see how it turns out 1st, could be awful!
mm inches
wheelbase 2420 95.3
track/tread (front) 1382 54.4
track/tread (rear) 1339 52.7
length 3705 145.9
width 1572 61.9
height 1372 54
ground clearance
length:wheelbase ratio 1.53
kerb weight 850 kg 1874 lb
Impreza
mm inches
wheelbase 2520 99.2
track/tread (front) 1465 57.7
track/tread (rear) 1455 57.3
length 4340 170.9
width 1690 66.5
height 1440 56.7
ground clearance 155 6.1
length:wheelbase ratio 1.72
kerb weight 1280 kg 2822 lb
So yeah, defo need arches. I have a set of Rallye ones but think I'll go box arches instead.
Let's see how it turns out 1st, could be awful!
This looks like a fun project. I would like to put forward a point of view if I may? I see a downside to this type of approach wherein the end result is essentially a SWB version - in drag - of the donor car. Though capable the Impreza isn't the last word in fun handling whereas arguably the original 205 is, so rather than transplant the Impreza suspension in its entirety could you perhaps figure a way to retain some of the fun factor from the 205? Would it be possible to retain the 205 front suspension, for example by shortening the Impreza shafts to suit and modifying the hubs to accept some larger bearings?
Another consideration is the wheelbase: the reduction in base will skew the Ackermann geometry of the original Impreza resulting in a potentially noticeable detrimental effect on handling. It may be easy enough to sort with some custom front hubs (if you keep the Impreza versions).
I am genuinely interested and look forward to seeing this develop!
Another consideration is the wheelbase: the reduction in base will skew the Ackermann geometry of the original Impreza resulting in a potentially noticeable detrimental effect on handling. It may be easy enough to sort with some custom front hubs (if you keep the Impreza versions).
I am genuinely interested and look forward to seeing this develop!
mwstewart said:
This looks like a fun project. I would like to put forward a point of view if I may? I see a downside to this type of approach wherein the end result is essentially a SWB version - in drag - of the donor car. Though capable the Impreza isn't the last word in fun handling whereas arguably the original 205 is, so rather than transplant the Impreza suspension in its entirety could you perhaps figure a way to retain some of the fun factor from the 205? Would it be possible to retain the 205 front suspension, for example by shortening the Impreza shafts to suit and modifying the hubs to accept some larger bearings?
Another consideration is the wheelbase: the reduction in base will skew the Ackermann geometry of the original Impreza resulting in a potentially noticeable detrimental effect on handling. It may be easy enough to sort with some custom front hubs (if you keep the Impreza versions).
I am genuinely interested and look forward to seeing this develop!
Unfortunately, the reason an impreza is not a terrific handling car is because it has a high CofG and a poor mass distribution. Both of those factors will be even worse when transplanted into the (shorter) 205 shell.......Another consideration is the wheelbase: the reduction in base will skew the Ackermann geometry of the original Impreza resulting in a potentially noticeable detrimental effect on handling. It may be easy enough to sort with some custom front hubs (if you keep the Impreza versions).
I am genuinely interested and look forward to seeing this develop!
Good project, Olie! I'm looking forward to seeing the finished project!
I was wondering about Ackerman on the Citroen/ Mitsubishi thread and the Lexus/ Espace thread but no one seems to notice anything detrimental... Yet!
Interested to hear about the high CoG of the Impreza, I was always under the impression it had a low CoG with that boxer engine!
I was wondering about Ackerman on the Citroen/ Mitsubishi thread and the Lexus/ Espace thread but no one seems to notice anything detrimental... Yet!
Interested to hear about the high CoG of the Impreza, I was always under the impression it had a low CoG with that boxer engine!
dom9 said:
Interested to hear about the high CoG of the Impreza, I was always under the impression it had a low CoG with that boxer engine!
The engine has a "low CofG" if you consider it as a single lump of metal distributed around it's crankshaft. Unfortunately, because of where the exhausts and driveshafts must be, the engine is both mounted very high in the car (in terms of the crank height) and very far forwards (because the drive shafts must go to the front wheel centres). Those factors make the car a "poor" handling car in absolute terms, and are very difficult to fix and made the tarmac rally versions of the car a total nightmare to try to setup effectively (ie, you can make it grip, but the drivers don't like how it handles, or you can make it handle, but you compromise grip)Gassing Station | Readers' Cars | Top of Page | What's New | My Stuff