Hi - new member, maybe, Diesel truck.

Other News, Views and topics.

Moderators: DLRA, Rob Carroll, OLDtimer, outbacktrev, Peter Noy

momec3
Posts: 780
Joined: Tue Mar 01, 2011 10:36 pm
Location: Cedar Grove Qld

Re: Hi - new member, maybe, Diesel truck.

Post by momec3 »

Those torque numbers should better 170mph imho but it needs the correct gearing. You can do this easy with a quickchange rear end and in Unlimited DTruck this would be fine.
Speedway wholesalers are selling basic Quick changes now for less than $2K. The easy conversion is scrap rear brakes and just throw one in for the event. Resell it after to the speedway set if you decide to.
Could be usefull in your dirt racing maybe.

Yes I understand the block of flats front. We have built an 82 F100 that is yet to run at Lake G.

Dr Goggles says you need a copy in the dunny, it can be dedicated then one for the rest of the house and one at work.
May appear a simple rulebook but a bit like pealing an onion.

Chris
Chris
NoThrottle
Posts: 8
Joined: Wed Sep 05, 2012 11:03 am

Re: Hi - new member, maybe, Diesel truck.

Post by NoThrottle »

:idea: :idea: :idea: :idea:
http://www.bankspower.com/projects/comp ... -dakota/43
In order to determine the power needed to reach the speed goal of 210 miles per hour at Bonneville, the power at the rear wheels, top speed and aerodynamic and parasitic drag had to be determined for the stock truck. Initial chassis dyno testing was needed to determine horsepower and torque at the rear wheels for the stock truck. Our Dakota was fitted with a four cylinder engine from the factory. The stock power output was 98 horsepower at the rear wheels. This power figure was used along with top speed (terminal velocity) and coastdown test data to determine the actual total drag of the stock truck. Then the power needed to reach higher speeds was calculated, as shown on the accompanying graph. The stock truck was then taken to Mrs. Orcutt's driveway, a 5-mile long stretch of perfectly flat road in California's Mojave Desert, for top speed runs and coastdown testing. The Banks Dynafact, a complete on-board computerized testing rig, was used to gather data for calculating aerodynamic and parasitic drag. From those numbers, the Banks team was able to calculate the amount of horsepower required to reach 210 miles per hour in the Dakota. Well over 800 horsepower would be required with the Dakota in stock trim at stock ride height. Since the Cummins Turbo diesel engine in race trim was projected to produce 600 horsepower (on straight diesel fuel), considerable drag reduction was needed to reach the desired speed of 210 MPH at Bonneville. Lowering the truck reduced frontal area and an air dam and other allowable aerodynamic modifications reduced the drag coefficient.
of course! a coast down test on a straight flat road. go both ways and average it. The light goes on!

Quick change ratios with 4 wheels driving wouldnt be so quick-change. I was thinking of getting some gears cut for the transfer case "low" range. Or is 4 wheel drive not a good idea? I can always drop the front tailshaft and see what the difference is with the overdrive transfer case.
Post Reply