| Straight track or Tru Track [message #279645] |
Thu, 11 June 2015 15:21  |
Joe Weir
Messages: 769
Registered: February 2013
Location: Columbia, SC
Karma: 7
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A recent thread on tru track brought a question to mind that would have threadjacked, so I'll ask it here.
Straight track or True track?
http://www.appliedgmc.com/prod.itml/icOid/1198
http://www.appliedgmc.com/prod.itml/icOid/701
Looks like one uses a wheel in a channel, the other delrin pads on a blade.
Which is the preferred system, or is it a tomato tomatoe thing?
What are the opinions?
76 Birchaven - "Wicked Mistress" - New engine, trans, alum radiator, brakes, Sully airbags, fuel lines, seats, adult beverage center... those Coachmen guys were really thinking about us second hand owners by including that beverage center...
Columbia, SC.
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| Re: [GMCnet] Straight track or Tru Track [message #279672 is a reply to message #279645] |
Thu, 11 June 2015 19:08  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Joe,
The True Track idea has been around and implemented slightly differently by
a number of GMCers for many years. If there are shortcomings to the
current implementation, the ones I'm aware of are:
1. Pebbles can become lodged in the channel above the cam follower,
possibly causing binding and damage -- I haven't experienced it, to my
knowledge, in 50,000+ miles.
2. Two additional, hard to reach, grease points are created. Since the
cam followers (bearings) are well sealed, I seldom grease my -- same 50,000
miles w/o problems.
The Straight Track was devised by a highly experienced industrial designer
just a couple of years ago to utilize the modern Delrin anti-friction
material in the track rather than the cam followers on the suspension arm.
I don't personally know anyone who's yet put significant mileage on a set.
There some possible advantages I'm aware of:
1. No place for large debris to lodge -- but at the cost of possibly
accumulating fine debris in the Delrin pads (which supposedly not a
problem).
2. No preventative maintenance (greasing) necessary.
3. The moving flat plate being constrained between the Delrin pads may
prevent some rotation of the suspension arms; i.e., help control camber
change at the wheel.
I haven't checked the relative prices but if they're similar, I'd be
willing to try the Straight Track -- being accustomed to being a guinea pig.
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, etc., etc.
www.gmcwipersetc.com
On Thu, Jun 11, 2015 at 4:21 PM, Joe Weir wrote:
> A recent thread on tru track brought a question to mind that would have
> threadjacked, so I'll ask it here.
>
> Straight track or True track?
> http://www.appliedgmc.com/prod.itml/icOid/1198
> http://www.appliedgmc.com/prod.itml/icOid/701
>
>
> Looks like one uses a wheel in a channel, the other delrin pads on a blade.
>
> Which is the preferred system, or is it a tomato tomatoe thing?
>
> What are the opinions?
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Straight track or Tru Track [message #279677 is a reply to message #279672] |
Thu, 11 June 2015 20:43 |
Joe Weir
Messages: 769
Registered: February 2013
Location: Columbia, SC
Karma: 7
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Senior Member |
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I kind of like that the tru track has little friction in the vertical. .
Ken, have you noticed any wear? After 50k there should be some.
76 Birchaven - "Wicked Mistress" - New engine, trans, alum radiator, brakes, Sully airbags, fuel lines, seats, adult beverage center... those Coachmen guys were really thinking about us second hand owners by including that beverage center...
Columbia, SC.
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