Monday, April 10, 2017

Hard to Believe

That it has been a year since I posted here... not much happening on the heavy Electrick these days... still recovering from the shop fire and mostly playing with quads with video capability. I have a  Yuneec Q500 and a couple of the small FPV racing size quads... I have a poor mans live view of a gopro mounted on a custom quad I'm working on... still no FPV googles... I think they are way overpriced pretty much like all of the Spektrum stuff... and you usually need multiple add ons to be usable. Hope to go to Joe Nall this year... a huge RC fly in down in Woodruff, SC. Maybe I'll find some used ones there... I was reading about them and you can get diopter adjustments for folks who wear glasses... unfortunately not for folks who have positive correction prescription... seems kinda shitty... but it is Spektrum.




Wednesday, March 23, 2016

A New Lease on Life

Shortly after my last post I went back to work... its a relatively small place but in a period of transition with lots of potential for growing. My job there is in the panel shop and they recently got their biggest contract ever for panel fabrication. A 3 million plus project for Sealed Air... formerly Cryovac..  a bit ironic as one of my first jobs was at Cryovac about 40 years ago.

Primarily an engineering staffing company... they acquired a panel fabrication shop a couple of years ago and recently acquired a machine shop. It is close by with flexible hours. The machine shop is of interest to me to fabricate some drive parts for adding electrick to the two KMX trikes I have.

The KMX trikes had a serious shortcoming... it appears they got a batch of frames from China or wherever they get them with a flaw. The two rear stays where the rear wheel mount are not properly aligned. This results in the rear wheel being canted to one side. It also causes the seat to be misaligned as well. Quite disappointing and to top it off they sent me replacement frames and they were the same way. Discussing it with them the fix is to brogan adjust the frame stays into alignment. Unbelievable they sent me a second set like that.... go figure.

Wednesday, September 9, 2015

Starting Over

A lot has happened since my last post here... I turned 62 in September last year and around the end of October I joined the ranks of the retired. I parted company with BMW, Agile 1, Renfrow Brothers and OpSource all in the same instant. My tour of duty there lasted almost 9 years... longer than I have been anywhere.

It was an interesting ride but glad its over. BMW pays well... has good working conditions.... but the management mindset and treatment of employees there create an environment that is adversarial to put it mildly.  Agile 1, Renfrow Brothers, OpSource, and BMW for that matter.... are the modern day equivalent of the money changers on the steps in biblical times. They all ask much of contractors and take their piece of your pay.... BMW to subsidize benefits for real employees.... the rest to subsidize benefits for themselves... as you get none.

 On November 30th of last year... I lost two huge buildings behind my house that were full of all manner of handyman collectibles and implements of creation. A bit mind boggling just how much stuff was out there. A bit of a game changer as well to go from having the capability to make most anything of wood or metal to not having the tools or place to do much of anything. Unfortunately the electrick trike and a ton of bits and pieces for a few more all went up in smoke. I did buy two more trikes with the intention of doing some more electrick trikes but its likely to be some time before that happens. So in the meantime I'll just be riding them the old fashioned way... peddling.

Saturday, July 5, 2014

Latest News at the ShadeTree


I do most of my riding over to USC Upstate and back and this time of year its pretty empty at the times I'm there. I just spotted some pretty good areas for riding the electric bikes that I've got in the works. The moonlander and the KX 85 conversion. I've got a huge motor coming for the dirt bike. It's a 12080 size KV 150 monster good for 72 volts. I've also located some ESC's that should be ideal for this motor... they are HV opto type rated for 300 amps at 20s. 20s is 84 volts.... I'll probably run 18s which will be about 75 volts.

Thursday, April 24, 2014

Road Testing

I've been doing a lot of riding just to see how things hold up. I did have to make one mod to the secondary belt drive. I was having some issues with the belt jumping teeth on hard acceleration. I was considering going to an 8M HTD belt drive on the secondary but off the shelf pulley selection is not so good. Part of the problem is that the rear suspension makes it difficult to maintain proper belt tension. The simplest cure was to add a belt tensioner. This ended up being pretty easy to implement and made a huge improvement. No more belt slipping.

I'm geared for a top speed of about 28 MPH. I think this is about ideal overall. I'm current limiting to 30 amps which is about 1500 watts. I've been logging my watt hrs per mile. Pumping up the tires made a pretty significant improvement . Also been doing more and more pedaling along and this has a big impact as well.


Tuesday, April 8, 2014

The devil is in the details.

Finally getting around to some decent riding weather. I've been mainly doing some detailing to improve the ridability of the trike. Two things that I have done that made a huge improvement was adding more batteries, and implementation of current limiting in my speed controller.

 I added two battery boxes and mounted them under the seat. I used anderson connectors so that it would be easy to unplug each battery box and swap it out for another. I have a total of 8 batteries now wired for 20 amp hours at 44 volts. This should give a range of 25 - 30 miles. Moving the battery weight to under the seat made a pretty significant improvement in the handling as they are now the lowest thing on the trike.

With the help of input from some folks on the Endless-Sphere site I have implemented current limiting in my speed controller. It makes it much more ridable and can be set so that it encourages you to pedal along. It should also help improve the range on a battery charge. I have started documenting watts per mile so that I can actually see if I'm making improvements over time.

I've been working on adding a liquid crystal display so that I can monitor motor and battery info real time. I have had this working in different locations and I added wiring inside the frame to have the LCD where I could see it while riding. I'm not sure why at this point but so far attempts to use the speed controller with the new wiring have not been so good. It acts as though the throttle input is unstable when using the internal wiring. I also changed to the Arduino Micro in the process so I'm not sure which is the problem. Thats the only real unsolved issue at this point. Hopefully will get that worked out soon.

Saturday, January 11, 2014

Offroad

I took the trike offroad for the first time... this is just before I started the electric conversion. It did better than I would have thought. I mainly added this because I don't have a picture of the whole trike on this blog. I've ordered some more batteries that should be here in a few days. If you know anything about Spartanburg, SC... this is near the USC Upstate campus. I do a lot of riding from where I live to there and back.

Friday, January 10, 2014

Reduction Drive Details

This has been a bit of a quick and dirty from the outset but evolved pretty quickly into what you see here. The first jackshaft is housed in a piece of 1 inch schedule 40 pipe which has a rough ID of just over .750 inch. I originally had bronze bearings in it but now have needle bearings with an ID of .500 inch and OD of .750 inch. The needle bearing are a tad over size to make for a press fit into a .750 inch hole. The ID of the tubing has a bit of a rough finish so the bearing have so far stayed in place in spite of being a relatively loose fit. I originally had no seals but have since added seals on each end to keep the lube in place.

If I were to try to duplicate this on a KMX Typhoon (I hope too in the not to distant future) I think I will get some chrome moly tubing which would be both lighter and a better fit.... tho in practice it has not been an issue so far. If it becomes an issue (loose fit) I would probably just use locktight on the bearings to insure that they stay where intended.I machined a piece of aluminum to go into the BB for the second jackshaft. The hole in it is offset to allow for tensioning the belt. It is held in place in the BB by a set screw. It has the same needle bearings and seals as the other shaft though a much tighter fit. I'm using .500 inch hardened shafts both places.

All the pulleys and freewheel adapter are held in place by set screws onto flats ground in the hardened shafts. Not overly elegant but effective. The belts are both 450 mm length 15 mm wide and are the 5m htd tooth style.