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Look KG486 - Monocoque frames in general??(9 posts)

Look KG486 - Monocoque frames in general??Longboarder
Mar 20, 2003 12:50 AM
Has anyone ridden a Look 486? How does it feel? Some analogies: When I ride the KG381 it feels quick and stiff, but not as rigid as a Derosa UD for example. When I ride the Trek 5200 it feels hollow -as if you don't feel the frame. How would you describe it?

Would the monocoque construction be stiffer or more durable than a lugged frame if the carbon layering was equal. What are the trade-offs between a lugged and monocoque design given a quality builder?

Much appreciated!
Stiff but not rigid?filtersweep
Mar 20, 2003 4:10 AM
I know these analogies can be tricky, but I guess I've regarded the X81 line as the top of the line for Look's road bike and the X86 line as a more aero TT frame that is also cheaper and not actually even spun up by Look (but I may be wrong).

I don't know that you can categorically describe design differences other than to say it would arguably be much easier to repair a lugged frame.

The 486 is a bit heavier than the 381 as well...
re: Look KG486 - Monocoque frames in general??Ian
Mar 20, 2003 4:21 AM
Well, I doubt you are going find anyone who has ridden the 486, they have not made it to the states yet.

By rigid, you mean how much road vibration is transmitted through the bike? I believe the monocoque frames should be smoother (kind of like the Trek), they generally are.

Is it more durable? I would say it is six of one, a half dozen of the other. But, as filtersweep says, you can repair a lugged frame.

Filtersweep may have been thinking of the KG386, which is heavier than the 381i, but the KG486 is 150 grams lighter.

Ian
re: Look KG486 - Monocoque frames in general??jaybird
Mar 20, 2003 5:24 AM
I didn't think the 5200/5900 was a monocoque frame. T think it is carbon lugs bonded to carbon tubes.

I know what you are saying abou the dead feel of the oclvs, that is why I bought the 381i.
re: Look KG486 - Monocoque frames in general??Ian
Mar 20, 2003 1:11 PM
You are correct about OCLV's. They are internal carbon lugs bonded to the tubes. But, the feeling of the OCLV ride is similar to a monocoque frame. Not exactly the same, but closer together than they are to the 381i.

Ian
i'm a kestrel ownerwolfereeno
Mar 20, 2003 8:00 AM
FWIW I got this info from someone who sells a lot of Treks, Colnago, King, Look, and Kestrels when I asked about comparisons between the 5200, look 361&KG386, and some Kestrels.... all were very close in price btw.

>> The softest or smoothest would the Trek.

>> The Kestrel would give us a bit more road feel. Stiffer at the BB area.

>> The Look would be similar to the Trek, comfortable and responsive.

I wanted a stiff bike, preferred the idea of a one piece frame, and appreciated that kestrel was an early innovator in the area of carbon bikes.

So I bought a 200sci. But to be honest it was mainly because I fell in love with the way it looked: a ruby clear coat frame that seems almost black/gray - very understated - until the sun hits it. And the Kestrel fork matches it too.

My second choice would have been the KG386. It also looks to be a beautiful frame and ironically doesn't seem to be marketed very hard by them. Considering it's a monocoque one would figure it would cost a lot more to manufacture than the lugged frames. But it's actually pretty cheap.

Anyway, after riding the Kestrel for almost a year I have to say I totally love it. I does seem a little harsh but I don't have much experience on other road bikes to compare it to (My other bikes have been mountain bikes.). But when I go over rough sections in the road, I'm comfortable while my girlfriend winces through it on her Cannondale.

Just my 2 cents
OCLV 120 is the way to go.......BIG RING
Mar 20, 2003 2:23 PM
I have had a C-40, 5900 (OCLV 110) and 5500 (OCLV 120). The 5500 and C-40 felt very similar, light, quick and compliant. The 5900 is a much stiffer ride, like Aluminum minus the tingy buzz. Go with a American manufacturer and get a great warranty and ride minus the huge C-40 money.
re: Look KG486 - Monocoque frames in general??bikenj
Mar 20, 2003 3:38 PM
For all those looking for a sweet carbon ride, I strongly suggest the Fondriest P4. Read the review in cyclingnews.com As far as monocoque frames go, they have the Top Carbon model and it's top dollar to match.

www.fondriest-usa.com

If you leave in the Boston or Colorado area, go take one for a ride.
re: Look KG486 - Monocoque frames in general??Longboarder
Mar 20, 2003 8:51 PM
Bikenj -

Can I contact you outside of the forum? I think I've already bored the group with my P4 vs. 381 question last week. I have a Fondriest Cross and I'm interested in the P4, but I hesitate to buy something that I can't test ride. I love the 381 that I test rode, but I didn't want to rule out the P4. (the grass is greener in the unknown pasture thing.)

Thanks