7 days it is then. I'm pretty sure it can all be poured at the same time, granted that time is given to allow for the concrete in the first lift to loose its elasticity (as per my talk with the concrete company doing the pour).
I found this document in regards to this type of concrete form system
http://irc.nrc-cnrc.gc.ca/ccmc/registry/03/13101_e.pdf
From what I can gather from page 5, it looks like the 6" basement walls are structurally acceptable for 3.07 meter heights, given that I place enough reinforcement...
Hi there,
It seems to me like finding the answer to the question above is a black art on its own, but I'll throw it out there in hopes that someone can give me a more definite answer.
The basement I plan on building will be formed using IFC block (3" Styrofoam/side 6" gap for concrete) at a...
Thank you all..
I think a force transducer will work fine for me. 'Dvd', I'm just trying to do a test on my frame to see if it will be strong enough for my application, which will have a torque on the chain of around 400ft/lbs max. So, instead of having it break in the real life senerio, I'd...
I'm thinking of just using a chain as it would be in the system, but rather a complete chain I would have the meter and force producer inline with the two chain ends. So, I guess the answer is no, as in I plan on modifying the chain to fit the two parts needed.
I'm looking for a meter that I can use in measuring the amount of force I can place on a frame (a frame supporting two sprockets at each end for a chain drive system) before I have too much deflection in the frame. Anyone know what these are called so I can do a search on them (I typed the...
Just a note: I built the heat coil & a control box for the hot tub and it worked great out in the deep woods. I put an inline pump and a car rad (which would turn on via comparator circuit if too hot). There were no steam shots, and no other threats to safety. When the water was at the proper...
I have found two types (although, I am sure there are more) of convection fire heated hot tubs. One is made by placing a modified potbelly wood burning stove in the middle of the tub and the other uses a similar approach to the one I mentioned in my initial post, reducing the heat by limiting...
Which ever word you would like to use, as long as we understand my issue. If this is the case (which I am not sure do to the unexplained reply), should I incorporate a water pump?
Dear Participants,
I would like to use an open wood fire to heat a hot tub in the outdoors. I plan on making an open system, letting the water flow from the bottom of the tub through a radiator network within the fire, to outlets on the top of the tub using convection. I would like to control...
Well, I can somewhat now see what you two are trying to explain. I have been reluctant not to change the opposed steering concept since I did not think there would be too much of a difference, but at this critical speed I can now understand the instability of the setup. I really wanted rear...
hmm.. I guess I am still having a hard time fully visulizing this issue, but a solution could be that I build it with the oversteer configuration and if the vehcile is truely too unstable at proposed speeds then I can always remove the rear steering and weld up the linkages to remain fixed.
By...
Warpspeed: steering both ends would reduce the radius by half, but what if the gearing from steering wheel were to be 2:1 (ontop of whatever ratio there is now). Then the steering would be no different than that of a front steered vehicle without the 2:1 reduction (as seen by the driver), except...
ca2sbl: I found the m151 differentials used for 95USD. The weight appears to be 70 pounds from what I could gather on my investigation. Granted if I had known about the m151 I would have started to build my project around these, but now heavy modifications would need to be implemented if I were...
ca2sbl:
It would make complete sense to not re-invent the wheel and go with these diff boxes. But weight is a bit of an issue (granted a gear box capable of 731lb/ft matched to a similar angle gear reducer box is around 80-90lbs). I'll try to find some more info on these.
warpspeed:
"The...
Warpspeed, sorry I missed your line "I still feel that crossed helical gears may be a suitable solution for a very light weight low powered vehicle." The vehicle is going to weigh around 1200-1500lbs and have the engine mentioned in the calculations above (54HP) (That might put things into...
I made a post in the "Gear and Pulley" mechanical section on using crossed helical gears and it was stated that they are not suitable for high torque applications. (Interestingly enough, I've found gear suppliers stating that they are, and some suppliers stating that they are not). I do like the...
