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Learning how to build Lotus Seven replicas...together!
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PostPosted: March 26, 2008, 12:25 am 
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horizenjob wrote:
Kurt that doesn't sound good at all. Too bad, it's a lot of effort. I'm guessing unsprung weight, people seem to disregard that too much.

Bottoming the suspension is bad, especially in the long run. Stiffening may not hurt the ride, because the bottoming part is extremely stiff! Does his car have at least 4" travel? I think fixing the bottoming would be a big help. You can take a hard ride in a good seat, but the bottoming gives impact loads...

I wonder how much S10 rear axles weigh, I have a feeling they use lighter ones in the UK.

I've been wondering how a Stalker would fare on some of our tracks in the Northeast. You just can't rely on smooth pavement in these parts.


He's changing the shocks and springs so we'll see. He estimated that the S10 axle with OUT wheels and tires is around 150lbs! (His guess, not varified.) I'll see if I can get some more accurate suspension numbers next time I visit him. I should underscore the fact that he's very happy with the car, but a little miffed that something so simple to get right at design was either missed or ignored. Again, our opinions. I suppose there are owners who feel the ride is fine...

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Last edited by Anonymous on March 26, 2008, 12:34 am, edited 3 times in total.

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PostPosted: March 26, 2008, 12:30 am 
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chetcpo wrote:
Judging by the pic in your sig it looks like 3" of upward travel would put your tire into that fancy carbon bodywork. (or did you drop it down into shar car mode for the shoot?) Do you think it ever really compresses that much? I'm no expert but I'll bet it has more to do with unsprung weight than travel.

I hate driving a vehicle with a heavy stick axle on bumpy roads.

I used 6" travel shocks where one inch is consumed by the bumpstop. There's 2.5" between the tops of the tires and the fenders, so while it can reach the fenders, it has to be a pretty nasty bump - it's happened a couple times.

(I used a piece of 4x4 wood sitting on top of the tire to set the clearance back when I set the shell height relative to the tires. Though it's not easy to see, the body actually sits on the chassis with the rear about 1/2" higher than the front for this very reason.)

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PostPosted: March 30, 2008, 12:14 am 
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KB58 wrote:
I just got a ride in my brother's Super Stalker he just finished.

IMHO, it suffers from both high unsprung weight and too little suspension travel, resulting in a very harsh bumpy ride on the street. While it may be the fastest thing on a smooth track, day-to-day driving isn't fun if the road is less than perfect. This was with 23lb tire pressure and shocks set full soft. It bottomed out frequently, and while cranking the shocks harder will keep it off the stops, it'll add to the harshness.

There's no substitute for generous wheel travel.

(My brother then drove Kimini over the same bumps and was shocked at the difference in ride. That's what 6" of suspension travel and low unsprung weight can do for comfort - and road holding.)


3400? 3800? Who's driving these day-to-day, anyway?

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PostPosted: March 30, 2008, 1:42 pm 
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realdealryan wrote:
3400? 3800? Who's driving these day-to-day, anyway?

I should have said, "On public streets, with their ruts, bumps, potholes, Bott's dots, etc, etc, - everyday roads."

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PostPosted: March 30, 2008, 3:28 pm 
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Is it that hard to drive these reasonably regularly? I am expecting it to be roughly at least as useful as a motorcycle. Does that seem unrealistic? I'm not ready to be old yet.. So am hoping to be able to commute to work, 40 miles each way several days a week.

For what it's worth, I used to put a lot of miles on my motorcycles...

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PostPosted: March 30, 2008, 9:23 pm 
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I'm thinking that if you thought the ride in a seven would be anything but "harsh, let's say" you'd be overestamating them in the comfort realm.
If one wanted to build it for a comfortable ride I'm sure that could be done but at the sacrifice of handeling, to some extent, all a matter of what you were aiming at.
I rode in a Miata and thought it was a bit harsh and was thinking "I'll bet the seven is way worse than that."
Some well known car writer once wrote, in a review of a seven, that the car was fun for about 15 minutes, then is was too loud, too hot, and too windy. But for those 15 minutes it was really fun.
I rode in a finished Locost in Houston a while back and didn't find it all that bad though, but I was pretty excited just to be in one.????? :lol:
wayne


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PostPosted: April 1, 2008, 1:48 pm 
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I’m a “firm” believer in low rates and lots of travel, ground clearance permitting. Its interesting to watch those Baja buggies jumping sand dune and what not, while the body simply “floats”. Obviously, an extreme example, but a good visual indication of the importance of suspension travel.

It seems obvious to me that, all things being equal, if the travel is reduced by half, the dampening required for the same bump would double at the very least.

http://www.baja.net/videos.php

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PostPosted: April 1, 2008, 3:36 pm 
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horizenjob wrote:
Is it that hard to drive these reasonably regularly? I am expecting it to be roughly at least as useful as a motorcycle. Does that seem unrealistic? I'm not ready to be old yet.. So am hoping to be able to commute to work, 40 miles each way several days a week.


elewayne wrote:
......Some well known car writer once wrote, in a review of a seven, that the car was fun for about 15 minutes, then is was too loud, too hot, and too windy. But for those 15 minutes it was really fun.......


My daily is a Mazdaspeed Miata and the ride in the Locost is probably comparable. I have no hesitation in driving the 'speed' anywhere. But commuting in the Locost is a different matter.

It is low, and consequently invisible, to all the cars, trucks, SUV's surrounding you. You will be constantly dodging soccer moms and under endowed pickup truck drivers. At first it's a game, but then, after a few near misses you realize that the bastards really are trying to kill you.:shock:

The engine heat will cook your feet at the same time a cold rain pelts your head. Even with a full windscreen, air buffets you constantly and relentlessly, bugs leave pockmarks on your forehead, and sand will sneak past the wings so that your left forearm slowly abrades away to just bone.

After a few minutes at 75 mph you begin to feel as though you are being beaten with a Styrofoam bat. The constant drone of the exhaust fills your ear until your brain begins to itch. You finally emerge from your 40 mile commute deaf and numb. And getting stuck in traffic is the equivalent of one of Hell's inner circles. You will love it! :D

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PostPosted: April 1, 2008, 4:09 pm 
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That's priceless Jack. :lol:

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PostPosted: May 3, 2008, 4:55 pm 
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