Board logo

Vinter project - +1000 hk and 300 km/t
sorens2 - 15/11/10 at 10:53 PM

I thought it was time for a new tool in the garage.
Min. 1000 hk
Max. 300 km/t
2WD
Homemade
Just made a quick sketch.



Soren S2

woolly - 15/11/10 at 11:01 PM

how about bolting the retarder direct to the wheel hub, no slip then.

Bluemoon - 16/11/10 at 12:46 PM

quote:
Originally posted by woolly
how about bolting the retarder direct to the wheel hub, no slip then.


would need two of em!.. Kinda fancied having a go at this myself, after all how hard can it be.....

Angel Acevedo - 16/11/10 at 02:55 PM

Is this some kind of joke?
I don't get it.

kipper - 16/11/10 at 03:17 PM

worizit ?
puzzled of Yorkshire

Denis.

coozer - 16/11/10 at 04:06 PM

Why a new tool, have you worn out that bird yet?

Rod Ends - 16/11/10 at 04:22 PM

quote:
Originally posted by kipper
worizit ?
puzzled of Yorkshire

Denis.


It's a Swedish Vacuum Pump!

or a dyno?

Have you seen Burgerman's D.I.Y. (Inertial) Dyno for motorbikes?

sorens2 - 17/12/10 at 10:47 PM

Rollers. 215 kg each.






Ends for the rollers. 25 kg each.






Rotating mass now @ 1060 kg.

Soren S2

PSpirine - 18/12/10 at 12:07 AM

Don't tell me you drilled those centre holes with that drill!!


Looks like a very cool project, I'll definitely be following!

sorens2 - 21/12/10 at 09:53 PM

Just finished prewelding the frame.
0.5 mm out diagonally.
Ill live with that.

Soren S2


sorens2 - 9/5/11 at 05:10 PM

Got a step further today.
Thanks for the donation of the sides.





Soren S2

blakep82 - 9/5/11 at 05:13 PM

awesome
but what is it? lol some sort of rolling road roller thing?

sorens2 - 9/5/11 at 05:23 PM

It is a dyno or rolling road.

To measure BHP and Nm on the car and faultfinding in general.

Soren S2

blakep82 - 9/5/11 at 05:31 PM

ah nice one
wish i had the skill to build something like that
first time i've seen this thread, but will keep an eye on it

have no idea of the mechanics of it lol.
how will it work? ie how will you get a reading from it, set it up, and how will you know how accurate it is?

[Edited on 9/5/11 by blakep82]

MikeRJ - 9/5/11 at 06:13 PM

quote:
Originally posted by blakep82

how will it work? ie how will you get a reading from it, set it up, and how will you know how accurate it is?


Inertia based rolling roads are quite simple, they are simply a set of flywheels. Knowing the moment of inertia (which can be calculated from the dimensions and mass), and having a speed sensor on the rollers you can calculate the rate of change of speed of the rollers and work back to power input with some relatively simple maths.

coyoteboy - 9/5/11 at 06:25 PM

Couple of things you'll need to think hard on - grip material (even pro roads seem to struggle with this at times). Would it not have been easier to buy a bus retarder and not use flywheel's (so you can do steady-state tuning)?

sorens2 - 9/5/11 at 07:53 PM

The idea of an inertia dyno is quite simple wich I prefer.
I dont have the money to just buy stuff so I have to make it myself.
And homemade things are always better. :-)

Soren S2

sorens2 - 6/5/13 at 05:21 PM

2 years in the build.

Finally getting there.
Did 130 mph today.



[Edited on 6/5/13 by sorens2]

[Edited on 6/5/13 by sorens2]

[Edited on 6/5/13 by sorens2]

sorens2 - 23/5/13 at 06:35 PM

218 bhp and 440 Nm in a 1.9 TDI Altea.

https://www.youtube.com/watch?v=knW-R1uWxdw

[Edited on 23/5/13 by sorens2]