Dynomometer low cost ?

[buzzkill]

I just don't think those little discks are going to have the force to actually pull the engine down, if they do they wont last long. Like trying to stop a rig, with mini van brakes. Very different then stopping the vehicle when the engine is disengaged.

got it , I am trying to find a low COST alternative

 

[Seandonato73]

So I have an idea I just haven't found the stuff yet. You need an old 4 wheeler rear axle. One with disks brakes in the center. Still looking to see what is viable, and cost efficient.

 

[buzzkill]

So I have an idea I just haven't found the stuff yet. You need an old 4 wheeler rear axle. One with disks brakes in the center. Still looking to see what is viable, and cost efficient.

I found old school Kart parts also ,.

 

[Seandonato73]

Yeah I was thinking about a live axle out of a kart too. Just didnt find anything as far as used.

 

[buzzkill]

Yeah I was thinking about a live axle out of a kart too. Just didnt find anything as far as used.

I got a call into my old Kart engine guy he has tons of old spare parts , Kart brakes would be perfect

 

[Seandonato73]

I got a set of hydraulic calipers here if you need them, think they are off a polaris 4wheeler.

 

[buzzkill]

I got a set of hydraulic calipers here if you need them, think they are off a polaris 4wheeler.

let me see what my kart guy comes up with , are you in the USA ?

 

[Seandonato73]

let me see what my kart guy comes up with , are you in the USA ?

Yep, where else, mate ?

 

[buzzkill]

Yep, where else, mate ?

Aus, England , East bum fekk ??

 

[Seandonato73]

Pennsylvania, U.S.A.

 

[buzzkill]

https://www.ebay.com/itm/74cm-Compl...For-Go-Kart-Mini-Kids-QUAD-Buggy/184443942162
this along with your calipers would work Sean ! , do you have any other parts like the master cyl or ??

also going direct from the crank is gonna require 20k rpm bearings ! that is very fast for a small unit , measuring brake HP you would be about 2,000 rpm much safer IMO ! Im gonna go that way , there are some losses in the trans but. otherwise you need to have a heavy duty cover in-case a disk exploded or something ! .

 

[buzzkill]

or this ?! with a 6.25" disk brake

 

[Seandonato73]

I have 2 calipers and the hoses I think. I was planning on getting a master cylinder for the foot brake on a motor cycle for the project they were intended for, then I ended up scrapping that project. You welcome to have the calipers if you think they will work. I'll get some pictures of them when i get home after work. I'm 99% sure they have pads on them as well.

 

[buzzkill]

I have 2 calipers and the hoses I think. I was planning on getting a master cylinder for the foot brake on a motor cycle for the project they were intended for, then I ended up scrapping that project. You welcome to have the calipers if you think they will work. I'll get some pictures of them when i get home after work. I'm 99% sure they have pads on them as well.

Cool , the unit I am looking at on Ebay has calipers and everything BUT the caliper doesn't look so big so ?? let me get these parts and I can look at it , If yours are bigger that just reduces wear etc.

 

[Seandonato73]

Here's what I got


They need cleaned up a bit, but should work if you need them. The mounting brackets arw on them too.

 

[DougStar]

Bet the seals are gone on them?

 

[buzzkill]

Here's what I got
View attachment 66085

They need cleaned up a bit, but should work if you need them. The mounting brackets arw on them too.

Some OLD mofo's for sure lol , I'm current looking at a HYdralic system might be easier and about the same cost , the biggest cost so far is a oil tank !!! WTFek but there is no high pressure except between the pump and valve so the tank is low pressure .
Ok Im gonna use a 3" PVC pipe 2ft long with caps and 3/8" NPT threaded end caps ! BAM cheap oil reserve tank. $16 .

so Oil pump + hoses + needle valve = $85 , sprockets + hubs + chain = $76 , oil tank $17 , metal parts ??? + bearings $150 ?? so maybe $330 + touch screen and microP $100 + some software updates ? so $500 Min. for Hydraulic version. so far.

The kart brake type is about $70 less so far.

Anybody KNOW C++ Coding ??? + Arduino

 

[siblues]

https://forum.arduino.cc/index.php?topic=624607.0

Arduino is pretty easy to find software.They always share their stuff and once you have a working program modifying it is much easier to understand.
https://ardyno.weebly.com/instructions.html

 

[Seandonato73]

Bet the seals are gone on them?

Nah they came off a runner, just didnt clean the dirt off them. Polaris trailboss 4c4.

 

[DougStar]

They look beat?

Nah they came off a runner, just didnt clean the dirt off them. Polaris trailboss 4c4.