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Thread: Are you running your own chassis?

  1. #211
    Join Date
    Dec 2007
    Location
    San Diego at the beach of course, love babes
    Posts
    2,303
    Observations this year about chassis in CanAm is this? I been building very short rides because I like the way it gets around the donut.
    The rides that has been successful lately at BPR has been very short, nothing wrong with that but I just wonder how can you top qualify with a ride that is 3.688 axle to axle and with a guide lead of .688?
    We are talking about guys that are running less then 4.0 lap times, is there a secret in this?
    Here is a picture of one of them chassis, the weight is very low as well around 85 gsss.








    Any thoughts about this would be appreciated as well.



    Nesta
    I'm the most boring person you could meet.

  2. #212
    Join Date
    Feb 2003
    Location
    barrington, il.
    Posts
    972
    It takes a "pro's" concentration level to drive those lap after lap consistently. Most of us cannot do this!
    Racing now at Wanker Valley Raceway and awaiting puppies!!

  3. #213
    Join Date
    Dec 2007
    Location
    San Diego at the beach of course, love babes
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    Well Cheater that is your opinion at this point, so we got one opinion at this time.
    What about the guys that build rides sure would like to hear their opinion as well.


    Nesta
    I'm the most boring person you could meet.

  4. #214
    Join Date
    Mar 2008
    Location
    Tampa
    Posts
    484
    Nesta,

    You might recall I built various dimensional versions of my 1225-series chassis, and more recently my 1229-series chassis (for these reference the Scratchbuilding thread "Ahead Rings Out / 1229's continued..."). With the 1225's I never saw any lap time difference between any of the chassis. And when I first tested the 1229's on a King, the same was true, no measurable difference. But when I ran the four 1229's on an Engelman, it was obvious that the shortest version, the 1229-Cb2 (3.75" WB / 4.75" RAX-GPC / 1.00" GL) was not only fastest of the four, but was also the easiest to drive of the four. The only conclusion I could draw was that it is not such a bad idea to have various dimensional versions of the same chassis!

    Rick (I need to start building again...)

  5. #215
    Join Date
    Jun 2002
    Location
    Iowa
    Posts
    886
    CMF3 - I am just getting in on this conversation and am going back and reading, but what is RAX-GPC?
    Sincerely,

    Jeff Strause

  6. #216
    Join Date
    Mar 2008
    Location
    Tampa
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    484
    Rear AXle to Guide Pivot Center distance along the chassis center-line. (Lazy-guy abbreviations I use on my design sheets. All apologies.)

  7. #217
    Join Date
    Jun 2002
    Location
    Iowa
    Posts
    886
    No - I call it COG (Center of Guide) to CORA (Center of Rear Axle). We all use the same measurements - just different ways of abbreviating them.

    Thanks!!!!
    Sincerely,

    Jeff Strause

  8. #218
    Join Date
    Dec 2007
    Location
    San Diego at the beach of course, love babes
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    2,303
    Hi Rick and thanks for putting in some info on this subject. I know that when I build shorter cars it seems to work better in turns (donut), that is why I been doing it.
    Where the magical dimension are I don't know, but I notice lately shorter rides with good drivers seem to find a podium spot at BPR.
    As well I would like to thanks to BillyBob for his insights.



    Nesta
    I'm the most boring person you could meet.

  9. #219
    Join Date
    Mar 2012
    Location
    HollyHill FL
    Posts
    237
    I've been building my chassis shorter lately also. They have been faster for me everywhere. I still have long/regular versions built and in my box. You never know what might work on race day.
    KellyRacing

  10. #220
    Join Date
    Dec 2007
    Location
    San Diego at the beach of course, love babes
    Posts
    2,303
    Have to say I got the same issues, I got busy building away in the past.
    Don't know what I have at this time in my slot box?
    Lots of rides that I just ran one time with because I was having fun soldering away.
    Went back this week and modifying some of the short ones with short guide lead, just to see where it takes me, it seems to me shorties always was fast out of the turns?
    Face it I should build less and focus on racing more?



    Nesta
    I'm the most boring person you could meet.

  11. #221
    Join Date
    Dec 2007
    Location
    San Diego at the beach of course, love babes
    Posts
    2,303
    Got back to build a slot again, it's a short one as well!
    I was going to build a Jaildoor ride but went to build a CanAm.











    Don't forget the NASCAR endurance race my friends.










    Nesta
    I'm the most boring person you could meet.

  12. #222
    Join Date
    Apr 2006
    Location
    Denton, Texas
    Posts
    198
    Nice lookin' chassis, Nesta!
    Let me know if you want to know my real name... it's not "Tex". LOL

  13. #223
    Join Date
    Dec 2007
    Location
    San Diego at the beach of course, love babes
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    2,303
    Thanks Tex.
    It was to light so I had to add more wires and it got a bit heavy but it might run well?


    Nesta
    I'm the most boring person you could meet.

  14. #224
    Join Date
    Apr 2006
    Location
    Denton, Texas
    Posts
    198
    Whatever it takes to keep it in the slot.........
    Let me know if you want to know my real name... it's not "Tex". LOL

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