<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 11.00.9600.17631"></HEAD>
<BODY>
<DIV dir=ltr align=left> </DIV><BR>
<DIV lang=nl class=OutlookMessageHeader dir=ltr align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><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></FONT><BR></DIV>
<DIV></DIV>
<DIV dir=ltr align=left><SPAN class=455354617-10032015><FONT color=#0000ff
size=2 face=Arial>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°).</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=455354617-10032015><FONT color=#0000ff
size=2 face=Arial>"...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</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=455354617-10032015><FONT color=#0000ff
size=2 face=Arial>Marcel.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=455354617-10032015><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=455354617-10032015><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV><FONT color=#0000ff size=2
face=Arial></FONT><BR>
<DIV lang=nl class=OutlookMessageHeader dir=ltr align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><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></FONT><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>
<FONT id=yui_3_16_0_1_1425815565626_10466 size=2 face=Arial><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></FONT></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><FONT
id=yui_3_16_0_1_1425815565626_10336 size=2 face=Arial>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?</FONT></SPAN></DIV>
<DIV id=yui_3_16_0_1_1425815565626_10343><SPAN
id=yui_3_16_0_1_1425815565626_10342 class=yiv2435760872733024020-08032015><FONT
id=yui_3_16_0_1_1425815565626_10341 size=2 face=Arial>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?</FONT></SPAN></DIV>
<DIV id=yui_3_16_0_1_1425815565626_10407><SPAN
class=yiv2435760872733024020-08032015><FONT size=2
face=Arial>Marcel.</FONT></SPAN></DIV></DIV></DIV><BR>_______________________________________________<BR><A
href="mailto:fot@autox.team.net"
ymailto="mailto:fot@autox.team.net">fot@autox.team.net</A><BR><BR><A
href="http://www.fot-racing.com/"
target=_blank>http://www.fot-racing.com</A><BR><BR>Donate: <A
href="http://www.team.net/donate.html"
target=_blank>http://www.team.net/donate.html</A><BR>Archive: <A
href="http://www.team.net/archive"
target=_blank>http://www.team.net/archive</A><BR>Forums: <A
href="http://www.team.net/forums"
target=_blank>http://www.team.net/forums</A><BR>Unsubscribe/Manage: <A
href="http://autox.team.net/mailman/options/fot/jwheeler1947@yahoo.com"
target=_blank>http://autox.team.net/mailman/options/fot/jwheeler1947@yahoo.com</A><BR><BR><BR><BR><BR></DIV></DIV></DIV></DIV></BODY></HTML>