Post by smokinguitarplayer on Jun 7, 2016 21:06:05 GMT
today , June 7 , 20916 ... BETA test for V2.0 of my air scoop. (pictured) . this design ...I'm pretty sure I can make it out of one piece of metal , just bending and cutting .. all the tabs etc. .. should work .. one piece ... I'll mount it with rivnuts ...well that's the plan anyway ..
Today , beta testing ..things went well ...,sort of.
First up .
MAX VELOCITY test .
Get on highway and floor it and keep the pedal down .... every once in a while reach around and see if the taped-on scoop is still there ...and it was.
Keep it floored and see what happens.
First discovery .... Today ,this test was run right after a fresh rainstorm ....the Pennsylvania air was heavy ... same conditions the NHRA guys have when they set record speeds / times here at Maple Grove raceway ..(which is just down the road) ...anyway what I mean to say is I doubt if there would ever be atmospheric conditions that would yield more horsepower. Max velocity with no draft from a truck etc. 78 MPH in my current configuration with the high windshield.
Second discovery ... after 10 min or so of flat out , foot on the floor ... I still had overheating !!!
Third discovery ...when I pulled back into my garage/workshop ... typically the fan is running on the radiator which it did and since nobody smokes anymore so there was no cigarette/smoke generator I had to stick my guitar-playing fingers in the scoop and low and behold ..my fan is pulling "inside" air through the radiator and ejecting it INTO THE SCOOP ... sheesa backwards
Conclusion ..I have to reverse the polarity of my fan and then retest but that being said, the scoop did not fall off so time to get the metal fabrication started.
Fred. I enjoyed the video. What is even better you are really enjoying the trike, regardless of the overheating issues. After looking at your scoop, you may want to make it a bit wider at the opening and not have it tapered so much in the rear. You should allow more clearance for your fan to pull air and your scoop to catch it.
Roger Worcester, Massachusetts (Arcata California)
Bit of a crude illustration, but if you modified your scoop so that the entrance turns in a bit as pictured, it should improve performance. Might seem counter intuitive, but it allows more air through than the way you have your scoop configured at the moment.
Hi, I have heating issues in mild traffic and the fan is mounted inside the radiator. I am not even sure if the fan works as I never hear it running. I haven't been caught in traffic much so the temp does cool down once traffic clears up.
I am sure the guys who did dyno would have figured out if fan not working as the spent two hours on ramp nailing the engine. I have a scoop which I believe was part of standard kit.
Post by smokinguitarplayer on Jul 18, 2016 14:49:02 GMT
ok ... Time for an update. I've had some surgery and am recovering ....it's a slow process but after a month or so I was "allowed" to ride my trike so I have been hitting the road .... I seem to like highway / high speed runs ...there's a good 4-lane highway that runs from Shillington , through Lancaster County / "Dutch country" to the city of Lancaster .. nice scenery and nice smooth road .. 30 miles one-way ... and a few places along the stretch, I can take and exit and take backroads back to my shop so that is my usual "haunt" ... soooo ....
Call this update "why you should thoroughly test your trike before taking any really long journeys" . .
The other day I'm doing my usual ... just cruisin' ... went about 20 miles and then headed back ...all highway ... at one point I did my usual "max speed" run ... I seem to be able to get 79mph on the flat and 84 downhill .... so after some high end testing I was just cruisin' back ... holding a steady 70mph when I realized that I was smelling something burning .... hmmmm ...temp gauge centered ... no red lights on dash .... no smoke in mirrors ..... I figured it was "that truck up ahead" ...and continued ...
I really started smelling it so I did the "round" of checks ...temp gauge, dash, mirrors ... and the engine was purring .. no power loss or surges etc. so my reasoning was ... 1. if she's burning up , since the engine et al is behind me I wouldn't smell the smoke so it must not be me. 2. it MUST be that truck up ahead ... maybe clutch ...brakes ....what IS that smell ? seems familiar. It's the truck for sure.
I soon came to my exit and when I lifted off the gas .... I WAS ENGULFED IN A CLOUD OF WHITE SMOKE ...... ahhhhhh .... so I slowed 'er down .... still some smoke wafting around me ..... shit ......down to 30 mph down the exit ramp .... still running .... seemed ok sort-of so I had about a mile to get back to my shop so I just slowly made my way back ....along the way I figured it out ....that "inner" rear fender was very "springy" on the mount/hanger I fabricated ...I'll bet it came loose at the mount point and was rubbing on the tire. ....
When I got out and saw what happened ...I had to check myself to make sure I was still alive because I dodged a bullet for sure ....... the fender mount ...the metal fatigued and broke off, allowing the fender to drop on top of the rear tire. Instead of flying away, it caught there and just "rode" the top of the tire .. now at 70mph it didn't take too long until the mounting bolts dug/burned a groove in the tire. LUCKILY I was at my exit or who knows what would have happened if it blew, but I'm pretty sure it would not have been pretty .
So ... my welds held, the mounting point did not come loose, the metal just cracked apart... you can see it on the first picture.... so folks, I live on to speed down the road another day .
Next job , new fender hanger about 3 times stronger than the last one.
Oh my Fred.... you lead a charmed life. Look on the good side, you are alive to look on the bad side. FYI: I made my rear fender support by doubling the thickness of the mount and adding a tab that rests against the engine housing as a stop and to prevent bounce. So far, so good! Welcome back to the forum.
Hi Fred, sorry to hear about the issue, the broken bracket came with the kit or you fabricated it? I have secured mine with cable ties as added protection as I am using a custom spacer since I removed the original hanger bracket to install new exhaust.
Charms of life, mine cut off in middle of the road yesterday as apparently one of the rear indicators came loose (installed LED ones), this could have caused some kind of earth to cut off the engine. Parked on kerb and all good, no issue. Now with fabricator for brake bias valve, new seat mount and front suspension.
Post by smokinguitarplayer on Jul 30, 2016 18:05:32 GMT
The bracket .... it was one I fabricated. It was quite thick steel but with all the cutting, grinding, drilling, etc. etc. who knows if it even had any temper in it at all . Also , my rear fender really was quite bouncy ... so fatigue set in and it just cracked off .... I'm off to start making a new-3-times-beefier bracket now!