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<FONT size=2 face=Tahoma><B>Van:</B> Marcel Van Mulders
[mailto:van.mulders.marcel@telenet.be] <BR><B>Verzonden:</B> zondag 15 maart
2015 15:28<BR><B>Aan:</B> 'davehogye'<BR><B>Onderwerp:</B> RE: [Fot] FW: TR4A
front suspension.<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV dir=ltr align=left><SPAN class=240140614-15032015><FONT color=#0000ff
size=2 face=Arial>Quoting Dave : "... of course the trunnions are sided...".
Unbelievable, but the left lower trunnion is mounted on the right side of the
car and vice versa. I have worked on the front suspension during 5 evenings till
01.00 am and still didn't see it, although these trunnions are marked RH
and LH. I noticed it this morning when starting to fit adjustable upper
inner fulcrum pins. When correctly fitting the lower outer trunnion bolt, only
the part of the upright that is screwed in the trunnion is allowing a
little movement , the upper ball joint could not be forced between the
upper (original)wishbones. This is the case on both sides of the car and the
upper ball joint is 1cm more to the front than the lower trunnion when the car
is level(= a little negative caster). I'll report on this forum when I've
swapped the trunnions and uprights next week.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=240140614-15032015><FONT color=#0000ff
size=2 face=Arial>Of course I don't want to blame anyone. Everyone does make
mistakes and this TR4A of Bob Kramer is a very good car with many great
features. I'm very pleased with it and I expect to run in the
front.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=240140614-15032015><FONT color=#0000ff
size=2 face=Arial>Marcel.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=240140614-15032015><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=240140614-15032015><FONT color=#0000ff
size=2 face=Arial>v</FONT></SPAN><FONT size=2 face=Tahoma><B>an:</B> davehogye
[mailto:dlhogye@comcast.net] <BR><B>Verzonden:</B> dinsdag 10 maart 2015
20:07<BR><B>Aan:</B> Marcel Van Mulders<BR><B>Onderwerp:</B> Re: [Fot] FW: TR4A
front suspension.<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: Arial; COLOR: #000000">
<DIV>RevingtonTR has adjustable upper, inner fulcrum pins, which allow camber
adjustment, but also allow the upright to find a happy place without force.
I would think that if everything is within factory specs, the upright
should align as long as you have the 3 degree trunnion. Of course the 3
degree trunnions are sided.<BR></DIV>
<DIV>The adjustable fulcrum pin is probably not allowed by your rule book.
I use them on my TR3 to get negative camber without modifying/shortening
the upper arms. These adjustable pins can be flipped depending on the ride
height. They also come with spacers that fit between the ball joint and
the A-arms for further caster adjustment.</DIV>
<DIV><BR></DIV>
<DIV>Dave H.</DIV>
<DIV><BR></DIV>
<HR id=zwchr>
<DIV
style="FONT-SIZE: 12pt; TEXT-DECORATION: none; FONT-FAMILY: Helvetica,Arial,sans-serif; FONT-WEIGHT: normal; COLOR: #000; FONT-STYLE: normal"><B>From:
</B>"Marcel Van Mulders via Fot" <fot@autox.team.net><BR><B>To:
</B>fot@autox.team.net<BR><B>Sent: </B>Tuesday, March 10, 2015 11:13:06
AM<BR><B>Subject: </B>[Fot] FW: TR4A front suspension.<BR>
<DIV><BR></DIV>
<DIV dir=ltr align=left> </DIV><BR>
<DIV lang=nl class=OutlookMessageHeader dir=ltr align=left>
<HR>
<SPAN style="FONT-SIZE: small; FONT-FAMILY: Tahoma" size="2" face="Tahoma"
data-mce-style="font-family: Tahoma; font-size: small;"><B>Van:</B> Marcel Van
Mulders [mailto:van.mulders.marcel@telenet.be] <BR><B>Verzonden:</B> dinsdag 10
maart 2015 19:04<BR><B>Aan:</B> 'Jack Wheeler'<BR><B>Onderwerp:</B> RE: [Fot]
TR4A front suspension.<BR></SPAN><BR></DIV>
<DIV></DIV>
<DIV dir=ltr align=left><SPAN class=455354617-10032015><SPAN
style="FONT-SIZE: small; FONT-FAMILY: Arial; COLOR: #0000ff" size="2"
face="Arial"
data-mce-style="color: #0000ff; font-family: Arial; font-size: small;"
color="#0000ff">All the parts are TR-4A-TR6, so the trunnions are 3° (all TR
trunnions that have removable trunnion bolts are handed, trunnions with
pressed in pins can be 0° or 3°).</SPAN></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=455354617-10032015><SPAN
style="FONT-SIZE: small; FONT-FAMILY: Arial; COLOR: #0000ff" size="2"
face="Arial"
data-mce-style="color: #0000ff; font-family: Arial; font-size: small;"
color="#0000ff">"...the lower trunnion should rotate around the bolt..." If I
understand what you mean, I don't believe this is correct : the trunnion bolt is
clamping the distance pieces (short pieces of steel tube that slide over the
bolt and rotate in the outer wishbone bushings) onto the trunnion and hence
the bolt, trunnion and distance pieces should rotate together and only the
wishbones can rotate in respect to the bolt (and trunnion and distance pieces).
I have assembled the suspension in this way, eliminating thus the play of the
trunnion on the bolt and this is the reason I had to drill new holes , more to
the rear, in order to get the upperr end of the uprights between the outer ends
of the upper wishbones. All parts and also the chassis seem to be all right.
Maybe I get it wrong anyway with the assembling of the suspension
parts</SPAN></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=455354617-10032015><SPAN
style="FONT-SIZE: small; FONT-FAMILY: Arial; COLOR: #0000ff" size="2"
face="Arial"
data-mce-style="color: #0000ff; font-family: Arial; font-size: small;"
color="#0000ff">Marcel.</SPAN></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=455354617-10032015><SPAN
style="FONT-SIZE: small; FONT-FAMILY: Arial; COLOR: #0000ff" size="2"
face="Arial"
data-mce-style="color: #0000ff; font-family: Arial; font-size: small;"
color="#0000ff"></SPAN></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=455354617-10032015><SPAN
style="FONT-SIZE: small; FONT-FAMILY: Arial; COLOR: #0000ff" size="2"
face="Arial"
data-mce-style="color: #0000ff; font-family: Arial; font-size: small;"
color="#0000ff"></SPAN></SPAN> </DIV><SPAN
style="FONT-SIZE: small; FONT-FAMILY: Arial; COLOR: #0000ff" size="2"
face="Arial"
data-mce-style="color: #0000ff; font-family: Arial; font-size: small;"
color="#0000ff"></SPAN><BR>
<DIV lang=nl class=OutlookMessageHeader dir=ltr align=left>
<HR>
<SPAN style="FONT-SIZE: small; FONT-FAMILY: Tahoma" size="2" face="Tahoma"
data-mce-style="font-family: Tahoma; font-size: small;"><B>Van:</B> Jack Wheeler
[mailto:jwheeler1947@yahoo.com] <BR><B>Verzonden:</B> zondag 8 maart 2015
23:40<BR><B>Aan:</B> Van Mulders Marcel<BR><B>Onderwerp:</B> Re: [Fot] TR4A
front suspension.<BR></SPAN><BR></DIV>
<DIV></DIV>
<DIV
style="FONT-SIZE: 16px; FONT-FAMILY: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; COLOR: #000; BACKGROUND-COLOR: #fff">
<DIV id=yui_3_16_0_1_1425815565626_10469 dir=ltr>Do you have the TR-4A uprights
and trunions? The TR-4A trunion is just the brass piece that fits in
between the lower wishbone arms and a bolt slides through it, instead of the
fulcrum pin (pressed into the trunion), as you would have had on your
TR-3. The lower trunion should rotate on the bolt, and the wishbone arm
bushings. There is a left and right hand, and when properly installed, you
should have about 3 degrees of positive castor on both sides. I raced a
TR-4A for 25 years, so I know the suspension intimately! Good luck.</DIV>
<DIV id=yui_3_16_0_1_1425815565626_10468><BR></DIV>
<DIV id=yui_3_16_0_1_1425815565626_10467 dir=ltr>Jack<BR></DIV>
<DIV id=yui_3_16_0_1_1425815565626_10363><SPAN></SPAN></DIV><BR>
<DIV id=yui_3_16_0_1_1425815565626_10335
style="FONT-SIZE: 16px; FONT-FAMILY: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif">
<DIV id=yui_3_16_0_1_1425815565626_10334
style="FONT-SIZE: 16px; FONT-FAMILY: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif">
<DIV id=yui_3_16_0_1_1425815565626_10333 dir=ltr>
<HR SIZE=1>
<SPAN id=yui_3_16_0_1_1425815565626_10466
style="FONT-SIZE: small; FONT-FAMILY: Arial" size="2" face="Arial"
data-mce-style="font-family: Arial; font-size: small;"><B><SPAN
style="FONT-WEIGHT: bold">From:</SPAN></B> Van Mulders Marcel via Fot
<fot@autox.team.net><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B>
fot@autox.team.net <BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B>
Sunday, March 8, 2015 5:35 PM<BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> [Fot] TR4A front
suspension.<BR></SPAN></DIV>
<DIV id=yui_3_16_0_1_1425815565626_10340 class=y_msg_container><BR>
<DIV id=yiv2435760872>
<DIV id=yui_3_16_0_1_1425815565626_10339>
<DIV id=yui_3_16_0_1_1425815565626_10338><SPAN
id=yui_3_16_0_1_1425815565626_10337 class=yiv2435760872733024020-08032015><SPAN
id=yui_3_16_0_1_1425815565626_10336 style="FONT-SIZE: small; FONT-FAMILY: Arial"
size="2" face="Arial" data-mce-style="font-family: Arial; font-size: small;">In
June 2014 I bought Bob Kramer's TR4A racecar after I crashed my TR3 at the
Zandvoort circuit (The Netherlands). It's a great car and it will get
better. Of my TR3, I only kept the engine and overdrive
dogbox Overhauling the front suspension, I found that the lower trunnion
was moving on the bolt instead of the bushed lower wishbones : the distance
pieces in the wishbones where shorter than original, so the trunnion was
not clamped by these distance pieces when fastening the bolt. Correcting
this, the upright has less play now, only a little in the trunnion, and
this upright with balljoint can't be forced anymore between the outer ends of
the upper wihbones, the balljoint is 1/2" too far to the rear. Turning the
upper wishbones to the rear (by moving the fulcrum pin) isn't a good
option, because binding will occur. I've drilled new holes for the brackets for
the inner ends of the lower wishbones : the suspension is moving without any
binding now but I don't know if I will leave it like that. I wonder if
something is wrong with the uprights? (less than 3° caster?) If I measure
the caster, I find 2.2° on both sides, but probably that isn't proving
anything. The chassis is as new, no damage. Any idea's
someone?</SPAN></SPAN></DIV>
<DIV id=yui_3_16_0_1_1425815565626_10343><SPAN
id=yui_3_16_0_1_1425815565626_10342 class=yiv2435760872733024020-08032015><SPAN
id=yui_3_16_0_1_1425815565626_10341 style="FONT-SIZE: small; FONT-FAMILY: Arial"
size="2" face="Arial"
data-mce-style="font-family: Arial; font-size: small;">Another question : trying
to get at zero bump steer, the best I get at by moving the steering
rack is a J : the wheels are toeing in when lowered more than 3 cm
below ride height (minimal to 5cm, then more and more toe in). Bending the
steering arms to the outside, almost touching the brake disks now, has
straightened the J a little. Is it possible to eliminate the bump steer
completely, or have we(TR4A-TR6) to accept some bump steer in the
least important part of the suspension travel?</SPAN></SPAN></DIV>
<DIV id=yui_3_16_0_1_1425815565626_10407><SPAN
class=yiv2435760872733024020-08032015><SPAN
style="FONT-SIZE: small; FONT-FAMILY: Arial" size="2" face="Arial"
data-mce-style="font-family: Arial; font-size: small;">Marcel.</SPAN></SPAN></DIV></DIV></DIV><BR>_______________________________________________<BR><A
href="mailto:fot@autox.team.net" target=_blank>fot@autox.team.net</A><BR>
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