Robert,
I have Spax tube shocks on my TR4A racer with Richard Good's springs and sway
bar and have no squat. It should be noted that Triumph Tune has several rear
springs sets available and you may need to consider a set with a higher spring
rate and/or a conversion to tube shocks. Their softest spring rate is 420
lbs/inch and those springs are blue with a color code of green, yellow, yellow
with a fitted length of 8.85 inches.
Now a question to listers. I have Goodparts front and rear springs that were
installed by the previous owner. They cause the car to be noticably higher in
the rear (the rear camber adjustment is not causing the rear being high). The
spring rates for the Goodparts springs are 390 for the front and 470 for the
rear. I see in Goodparts web site that rears may available with a 550 spring
rate from him however they are not listed to be ordered so I assume I have the
470s. (Richard, is there a way to visually tell your 470s from the 550s?)
I have sourced a set of Triumph Tune rears that have a spring rate of 550
which when installed have the car sitting level. The question I have is; with
rears of 550 lbs/inch would I have a dangerous oversteer if I keep the 390s in
the front?
Thanks,
Dan
> Date: Fri, 20 Nov 2009 16:40:07 -0500
> From: lang@isis.mit.edu
> To: fot@autox.team.net
> Subject: Re: [Fot] Koni ShoX for IRS TR
>
> Hi,
>
> I'm running a TR6 with pretty much a stock rear suspension that it
> "upgraded" with TTune sprint springs and re-valved armstrong shocks. IT
> works pretty good, but it looks like I could benefit from a bit more bump
> resistance. Seeing that I autocross almost exclusively, the car
> transitions a LOT and for my setup that means the car squats big time when
> I jump on the throttle.
>
> At any rate, I'm considering waivering from the close to "as shipped"
> condition of my car (more like "as Harry Webster designed) and switching
> to tube shocks in the rear.
>
> I know about most of the bracket setups for TR6, as I purchased a set of
> tubulars way-way back in the day (1978 or 1979) that came with
> Monroe-matics!
>
> So, my question is this: for the bolt-in shock brackets that are out there
> in use ON RACE CARS - what are folks using for shocks? I know about AVO,
> SPAX, and Koni. What I'd be looking for is something that gives me some
> adjustment for bump... the Koni and Spax only allow rebound adjustment, so
> we're probably talking about a two-way adjustable.
>
> If you use this setup or know someone that does, I'd like some insight on
> the matter.
>
> Worst case, I have a pretty stout cage, so adding a couple of small bars
> and some ears would be "way easy". I'm just looking to avoid the situation
> I started about 5 years ago where we started going down the "$1200 per
> shock" road. I'm looking for something a little closer to off-the-shelf
> than "the-best-shock-ever-made".
>
> TIA,
> rml
> ---------------------------------------------------------------------------
> Bob Lang Triumph TR6!! | This space for rent
> 2009 NER Solo Chair |
> Voice:617-253-7438 | Cell: 339-927-4489
> ---------------------------------------------------------------------------
> _______________________________________________
>
>
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