bart
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| posted on 14/11/14 at 12:40 PM |
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ralley design escort racks shortened to dims
I am thinking about offering a shortened to your dims service on new rally design escort racks
both LH and RH 2.2 and 2.4 and 2.7 ratio
done professionally by an engineering company I know .
I could supply complete or offer conversion
this is not an Advert as i am not offering the service yet
just trying to get some feedback as to whether its worth doing.
your feed back would be appreciated.
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Doctor Derek Doctors
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| posted on 14/11/14 at 12:46 PM |
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To what end are you shortening them? I thought people generally used the Escort racks as they come, I have only seen the Sierra racks shortened.
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
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britishtrident
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| posted on 14/11/14 at 02:43 PM |
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Escort racks are a bit too wide to minimise bumpsteer.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Doctor Derek Doctors
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| posted on 14/11/14 at 03:03 PM |
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quote:
Originally posted by britishtrident
Escort racks are a bit too wide to minimise bumpsteer.
I use an Escort rack and Cortina Geometry uprights and (theoretically) I have 0.1mm of bump steer in my system. Although I'm not going to claim
that its that good in realy life due to the tolerance stack-up in the mountings but I dont think the rack is any major hinderance to pretty much
eliminating bump steer. The rack did have to be mounted at a very specific height to achive that low number.
I would be interested to know the price to shorten a rack though.
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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JoelP
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| posted on 14/11/14 at 06:05 PM |
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I've got Sierra uprights and escort rack and it has shocking bump steer.
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Doctor Derek Doctors
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| posted on 14/11/14 at 07:35 PM |
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quote:
Originally posted by JoelP
I've got Sierra uprights and escort rack and it has shocking bump steer.
It doesn't have to. A bit of measurement and adjustment of the rack position can eliminate a good chunk
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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big_wasa
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| posted on 14/11/14 at 08:36 PM |
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As above with some work you can dial out a lot of bump steer. But the escort rack is a little wider than it could be.
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mark chandler
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| posted on 14/11/14 at 08:44 PM |
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I cannot see how you can eliminate bump steer on a Chapman frame without shorterning an escort rack.
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Doctor Derek Doctors
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| posted on 14/11/14 at 08:50 PM |
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quote:
Originally posted by mark chandler
I cannot see how you can eliminate bump steer on a Chapman frame without shorterning an escort rack.
Nobody said you can eliminate it, you can greatly reduce it though with correct rack placement.
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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