General > In General...
What's it gonna take to build your own low cost dyno?
sandblaster:
Crofter985
This is the Australian web page I mentioned in the other thread.
http://dtec.net.au/index.htm
For a 1000 bucks Australian you get the hardware and software just supply your own flywheel
1901306708:
the land and seas are allright. the strain sensor failed often on the one i was around.
what works good is if you take the power off your front sprocket. take an old sprocket and weld a ~4 in long piece of pipe onto it. use a large enough ID to get your snap ring pliers inside to attach it to your bike. on the other end of the piece of pipe, weld on a flange. weld the same flange onto a shaft going to your dyno and bob's your uncle. its nice to have a rubber dampnner in your system somewhere.
power varies alot with air temp, crankcase temp, coolant temp all sorts of things so consistancy is important.
sandblaster:
Crofter985
Had a look on eBayUK last week and found this up for auction.
Put a bid on it at the start price and it ran for the three days it had left to run without being challenged.
It's a 330x400mm slug of steel, two sets of bearings, a disc, caliper and master cylinder, a starter ring and starter motor for said starter ring. Now there's a good few other bits to get but that's a good start. It's not all plain sailing as far as the rotor is concerned it's only big enough for 50hp but what I am thinking of doing is to get some discs of 50mm thick steel made up and fit them to the ends, or I've just had a thought, get another slug of steel the same size and make a double roller set up that the wheel sits in. There's a few interface box options, I will have to do some detailed research before I buy. Once I gave a roller setup working it will be possible to do comparative testing without electronics just by timing runs, probably not much use for any kind of accuracy, what it will be able to do is a quick dry and warm ( important factors in winter round here ) way of setting carb up, getting A/F ratios set up and so on.
sandblaster:
I've been contemplating this idea.
If I go through with it I want to make mine wide enough so that I can dyno Quads as well as bikes.
I don't even own a quad but as soon as people find out you have a dyno they will seek you out :D
sandblaster:
There's been some updates to this thread
http://www.oem-cycle.com/forum/viewtopic.php?f=5&t=890
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