Do you have a sense of how much "offset" there is at the outboard end
of the A-arms? That would make up for the lowered pivot in the
trunnion - at least partially.
Also, someone mentioned to me that the stub axle may have been moved
up on the TR-6 upright (which would lower the car). Can anyone
confirm / deny this?
It would be awesome to have the parts side by side for comparison -
both upright / vertical link and trunnion / lower A-arm combination.
Alternately, a few measurements from a TR-4A / TR-6 front suspension may help:
On vertical link from bottom of upper ball joint mount to center line
of spindle
From center line of spindle to spring pan
That should give me a good feel for how much (if any) the TR-6 setup
would lower the car.
Tony
At 11:17 AM 8/20/2012, Charly Mitchel wrote:
>It depends on which way you install the arms, offsets up or offsets
>down. My suspension had spacers to lower it and I flipped the lower
>a-arms and removed the spacers and remained the same height.
>Charly
>----- Original Message ----- From: "Tony Drews" <tony@tonydrews.com>
>To: "Charly Mitchel" <charly@mitchelplumbing.com>; "MadMarx"
><tr4racing@googlemail.com>; <fot@autox.team.net>
>Sent: Monday, August 20, 2012 8:52 AM
>Subject: Re: [Fot] TR-4 vertical link and trunnion
>
>
>>THAT's it. Left hand thread / Right hand thread. Thanks.
>>
>>OK, next question - If I switch from TR-4 to TR-4a (or TR-6) lower
>>A arms, does that undo the lowering effect of the later
>>trunnions? My car is low enough already, and messing with spring
>>spacers doesn't sound like any fun at all. I've got two weekends
>>before the next race to get this done. It sounds like the later
>>A-arms are a direct bolt on for the earlier car with the welded in
>>lower frame pivots. It may also eliminate the need for the reaming
>>and spacers. It would probably also eliminate the additional
>>camber gain - not sure that's a plus, but everything else would be a positive.
>>
>>Joe, your TR-250 front end is getting more attractive as we go along... :)
>>
>>Tony
>>
>>At 10:41 AM 8/20/2012, Charly Mitchel wrote:
>>>My guess is the are L&R handed to keep from mixing them up. The
>>>trunnion has the castor built into them and if you tried to
>>>reverse them the wheel would have opposite castor. The threads on
>>>them are also L&R handed and can only be assembled as a set L&R.
>>>Charly
>>>----- Original Message ----- From: "Tony Drews" <tony@tonydrews.com>
>>>To: "MadMarx" <tr4racing@googlemail.com>; <fot@autox.team.net>
>>>Sent: Monday, August 20, 2012 8:33 AM
>>>Subject: Re: [Fot] TR-4 vertical link and trunnion
>>>
>>>
>>>>I'm looking at a diagram of the TR-4 and TR-4a
>>>>front suspension. On the 4A, the vertical link
>>>>is different for Left Hand side of the car and
>>>>Right Hand side of the car while on the TR-4 it's
>>>>the same part for both sides. The trunnions are
>>>>"handed" too - right / left hand for both set ups (but are
>>>>different parts).
>>>>
>>>>Why is the vertical link different from side to
>>>>side? I'm not seeing the difference and want to
>>>>make sure I cover my bases if I make this conversion.
>>>>
>>>>Thanks, Tony
<snip>
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