Friday, February 28, 2020

Roebling Road 2020

For the second race of the season, I drove down to Roebling Road Raceway in Bloomingdale, Ga., with my CRTT and ERTT Sprints.  This would be the first run on the CRTT since I discovered that the crankcase was cracked after racing it at NJMP (and winning both 250GP races) Memorial Day weekend of last year.  I replaced the crankcase with '67 SS road bike cases, which had to be modified for the bigger diameter sleeve gear, bearing and seal on the transmission output.  Bill Himmelsbach did the shimming and assembly and when I took it to my secret test site, it fired right up and had no leaks or issues.

I arrived Fri. afternoon after driving through heavy snow in Va. and N.C. Thurs. night.  I got my pit setup and the bikes through scrutineering.  It got very cold that night and there was frost everywhere in the morning.  I took it very easy in practice, but gradually worked up a little speed.  The CRTT wasn't running correctly, hesitating and cutting out.  I wondered if it was running lean because of the cold dense air, so went to put in a larger main jet.  But, I found the main jet laying in the jet holder, so just screwed it back into the carb tightly.  The motor ran much better in the second practice.  The ERTT ran well and the gearing seemed perfect.
Alex McLean is on the pole for the 350GP race to my left out of the photo.  photo by Darleen Dremel

The 350GP race was my first, with 350 Sportsman gridded behind us.  I got a good start and went straight in the lead.  On the 2nd lap, Alex McLean drafted by me toward the end of the straight.  On the third lap, Kevin Dinsmoor came by the both of us on his Sportsman bike, but perhaps braked a little early into turn #1 and balked Alex a bit and I went under the both of them and back in the lead.  After a couple of laps, Alex drafted by me again near the end of the straight.  He seemed to have a little motor on me and I could stay in his draft, but couldn't pass him.  On the last lap, we came up on a backmarker going into Turn #4 and I got by him, but Alex didn't.  I was thinking that I had a shot at the win, as Alex had only drafted passed me well after the Start/finish line, but he was right on my tail and timed the draft perfectly and beat me by 0.034 seconds.  It was a very fun race.
I congratulate Alex McLean after a great race.  Darleen Dremel photo

The 250GP class was gridded in the second wave behind 500 Premiere, Formula 500, and 500 Sportsman.  Again, I got a good start and went straight into the lead.  I won the 250GP class by more than 30 seconds and passed 15 of 28 starters to finish 13th overall with the 12th fastest lap.  What I didn't realize was that my arch nemesis and good friend Jack Parker had crashed his DT1 Yamaha on the warmup lap.  Things would be different Sun.
I wait to start my CRTT before Saturday's race.  Darleen Dremel photo

While it was slightly warmer Sun. morning, there was still frost about when I arrived at the track.  I took the CRTT out in practice gingerly the first lap, but then tried to go too fast too soon and tucked the front end in turn #3 and tumbled for a while.  The knuckle on my left little finger, my left forearm, and left hip got minor abrasions, but nothing serious.  The bike wasn't too bad, but the clutch lever was broken, the tach cable broken, the transponder had got ripped off the bike (but was recovered) and the carb was full of dirt.  When I took the carb off, I saw that there was dirt down the port and the intake valve was slightly open with a grain of sand sitting on the valve seat.  So the cylinder head had to come off if I was going to race the bike.  Dick Miles started to help, then Erik Green happened by and sprung into action.  When we took the head off, the Helicoil for one of the exhaust bolt came out.  Then Al Hollingsworth came by and he had a Helicoil kit and went and fetched it.  Erik decided that the intake valve had to come out as it wasn't sealing.  I pulled out my valve spring compressor, lapping compound and suction stick.  But, AHRMA had accelerated the scheduled for Sun., and there were three races before lunch, the second being the 350GP.  I went off to race while the crew continued to work on the 250.  I got a good start, but Alex soon came by.   I went a little slower than Sat., and he slowly pulled away and won by over 5 seconds with me 2nd overall.
Putting the CRTT in gear to pull it back on compression.  Darleen Dremel photo

Fortunately, the 250GP was after lunch and we worked straight through.  At some point, Jim Jowers came over and told Erik that he had a flat tire on his sidecar and he went off to deal with that, as the sidecar race was immediately after the 250GP race, which was first after lunch.  For some reason, with the new Helicoil in the head, a longer bolt was needed and Al went off to find one.  When I turned the crank to get the piston at TDC, it lifted the cylinder off the crankcase and dirt fell down in the joint, so we had to pull the cylinder well up to clean and reseal it. 
Al Hollingsworth putting the head back on the motor.  Dave Hollingsworth photo.

We removed the tach cable, but the tach drive was still binding, so we removed that, too.  The front mudguard was cracked and rubbing on the tire, so when we pulled the bike down off the bench, Dick straightened the forks which were tweaked and the mudguard cleared.  We fired up the motor just as they were making 3rd call, and I rode straight down to pit road and onto the track without stopping.  I took a pretty tentative warmup lap and gave the motor a good look on the grid and didn't see any leaks.   Again, I launched straight into the lead, but on the 2nd lap Jack Parker drafted by.  But, I could draft by him if I got on his tail on the straight.  We went back and forth and I was leading when I took the white flag starting the last lap.
Leading Jack Parker at the white flag.  Dave Hollingsworth photo

I was getting a good draft behind Mark William's H1 Kawasaki when, near the end of the straight the motor lost power and I pulled in the clutch and coasted to a stop at turn #2.  It turned out that the sparkplug lead and fallen off, which is a lot better than a rod through the case.  And, I was still scored as 2nd even though I didn't finish the last lap.  I guess that Chris Spargo, the overall leader on his F-500 Yamaha had lapped everyone behind me, so I did my 7 laps before anyone else in the 250 class.  And, if the plug lead hadn't fallen off, neither Jack or I was sure who would have won.  So, it was an exciting, successful, fun weekend despite the crash in the middle.  Many thanks to Erik and Henry Green, Al Hollingsworth, Dan Levine, and Dick Miles.

Dick Miles imparts some wisdom to me.  Darleen Dremel photo
I tell Dr. Dan Levine how it is.  Darleen Dremel photo.

Saturday, February 15, 2020

Laguna Seca 2020

I've raced at Laguna Seca on seven different occasions going back to 1982 (which was a shorter circuit then without the current turns #3, #4, and #5).  The last time I raced there was 1989.  The last time I rode there was 2008, when I did a Moto Giro based in Monterey and we got to do a lap of the circuit, me on my '53 250 Airone Sport (I crashed).
In Fri. practice, I was second out in my group and first out, Brian Larrabure, crashed on the pit out road before he even got on the circuit.  This freaked me out, as it didn't look like he was going fast, and I slowed way down.  I started gingerly on the circuit and when I got to turn #5, I saw the red flag.  So, I threw my hand up and putted slowing ahead.  Even at this pace, I blew the corkscrew, forgetting how tight it was and ended up on the rumble strip going down the right.  In hindsight, it was probably a good thing that I did my first lap of the circuit in almost 12 years under the red flag.  A little knowledge is a dangerous thing.  But, everything went well for my four rounds of practice in beautiful weather.
I had entered 350GP and 'bumped-up' to 500 Premiere with my 350 Sprint.  I noticed in practice that my times were better than Andrew Mauk on Keith Leighty's 450 Honda, one of my competitors in 500 premiere, but I didn't put too much stock in that as it was Andrew's first time at Laguna.  The sunshine ended around 4:30p when the fog rolled in and the last two practice groups didn't get their last round of practice.
The fog was very slow to lift Sat., and there ended up being no practice and we went straight to racing after lunch.  My first race was the 500 Premiere.  We were in the second wave behind the first wave of Sound of Thunder 3 (which consists on SV650s and 750 Ducatis and such).  Behind us in the 2nd wave was Formula 500, and 500 Sportsman, with Lightweight Novice Production in the third wave, 42 entrants in total.  Brian Larrabure, on his Minovation Seeley G-50, now without a windscreen after his Fri. crash, and Andrew Mauk came by me almost immediately and gradually pulled away.  Mark Morrow on his two stroke Yamaha came by the three of us to win the F-500 class and Ari Henning, on his 350 Sportsman Honda, finished 0.001 seconds behind me to win his class.  I was 11th overall.
The 350GP followed after two races and we were gridded in front of 350 Sportsman in one wave.  I got the holeshot, but Ari Henning came by before we got to turn #2 and pulled away, but no other bikes challenged me.  I finished more than 16 seconds behind Ari, but more than 30 seconds ahead of my teammate Walt Fulton III, who was second in class, third overall.  My best lap was more than a second quicker than in the 500 race.
Sunday was sunny, but windy.  We did get one round of practice in and I just did two laps to make sure everything was alright and get my mind right.  But, all the 8 lap races were shortened to 6 laps as they had run out of time on Sat.  In the 500 Premiere, again I was first off the line and again Brian and Andrew came by me, but this time I was able to hang with them.  On the second lap, Brian was leading and I was second when he seemed to check up early in turn #6 and being right on top of him, I stuffed it inside him and there was light contact.  He immediately shot off the track, but it seemed he decided to rather than it was out of his control.  In subsequent laps, I saw him standing with his bike at the barrier on the outside of the turn.  Had I damaged his bike when we touched?  No time to think about that now as Andrew was all over me.  On the last lap, I was leading when Andrew stuffed inside of me in turn #6 and again there was light contact.  I lost my drive a bit and Andrew pulled ahead up through the Corkscrew.  There was traffic ahead and I was able to get ahead and win the race.  What I didn't realize was that one cylinder of Andrew's twin quit and that's why I got by him.  Brian's drive belt had broken, probably the result of his Fri. crash and getting gravel in it, and that's why he suddenly slowed.  Mark Morrow and Ari Henning didn't start the race.  Andrew's fastest lap was about 1/2 second faster than mine.
In Sunday's 350GP it was pretty much a repeat of Sat., with me getting the jump and Ari coming by early and pulling away.  I only finished 1.5 seconds behind Ari as he had a problem and slowed towards the end.
One of the highlights of the weekend was getting to spend time with Ari Henning and Zack Courts.  I raced with both of their dads in the '90s and they both grew up at the track.  Ari's dad Todd came to Laguna to see his son race and everyone was happy to see him.  Ari and Zack are best of friends and both superb racers.  Zack won Sound of Thunder 2 and Sound of Singles 1 riding a Kramer for the North American distributor.  Years ago, Ari got a job at Motorcyclist Magazine and  brought Zack there.  In addition to both writing for the magazine, they did very creative and funny videos.  They left Motorcyclist and went to Motor Trend when it started doing online videos.  Now that has ended, but they have plenty of projects in the works.  I was very flattered that Zack took the time to photograph me at various places around the circuit.
all photos by Zack Courts.

Tuesday, November 12, 2019

Friday, August 16, 2019

Winningest TT riders

Back on 14 Dec., 2012, I posted on this blog about the winningest riders at the IOM TT, tracing the the title from Alec Bennett to Stanley Woods to Mike Hailwood to Joey Dunlop to John McGuiness. 
https://daveroperracing.blogspot.com/2012/12/when-writing-review-of-biography.html
I also commented on these and other rider's percentage of wins to starts and said that Hailwood lays claim to being the greatest TT rider having won 40% of the races he started.  I didn't check every rider's win percentage and there may be a rider who only raced once and won or even twice and won once, thereby eclipsing Hailwood's 40%, though I doubt it.  But, in anticipation of spending a few days with Giacomo Agostini at the Classic TT, where we're both riding Team Obsolete bikes in the Lap of Honour, I reviewed Ago's TT record.  Ago raced in 16 TTs over an eight year period and won 10 of them, a 62.5% win to start ratio.  Yes, Ago had superior equipment during this period, but it's still an incredibly win ratio.  In his first year at the IOM, 1965, he DNFed in the Senior TT, which his teammate Hailwood won, and Hailwood DNFed in the Junior TT, while Ago finished 3rd behind Redman and Read.  The next year, Ago started winning.  And while it may have been a relative cruise in some of his 10 wins, he averaged winning by almost 7min. in those 10 races.  He only raced in the Junior and Senior TTs and won both in '68, '69, '70, and '72.  He would probably be the first to say that Hailwood was the best, but Ago certainly ranks up with Woods, Dunlop and McGuiness.

Sunday, July 21, 2019

Calabogie 2019

Calabogie is a fabulous race track about an hour west of Ottawa, Ontario Canada.  It's 3.136 miles long and has 20 turns, all of which seem to be blind, decreasing radius and off camber.  Well, thats a bit of an exaggeration as it does have a couple of high speed sweepers, but is probably the most challenging purpose built circuit that I know.  And, there's not a bump on it, which is amazing as I hear that they have winters up there.  The VRRA has been racing there for at least 4 years and this was my 3rd visit there.
I pre-entered my 350 ERTT H-D Sprint and my 250 CRTT H-D Sprint, but the next day, I discovered that the crankcase on the 250 were cracked.  I guess that's why is wasn't very oil tight and vibrated more than I remembered when I won two races with it at NJMP four weeks earlier.  So, I put the CRTT aside and put the motor in my 1946 Moto Guzzi Dondolino and took that instead.
How many two wheelers does one need at the races?  Clearly, four. though in the end I never started the TC 200 Suzuki.

I went up Fri. June 26th without having started the Guzzi, so when I got there, I wanted to start it right away before I committed to the entry.  The Dondolino has the oil tank on top of the fuel tank (where else would you put it?????).  I was talking to some friend as I gassed it up and then realize that I was putting the gas in the oil tank, which already had oil in it.  So, I had to drain it all out and put fresh oil in.  Having done that, it fired right up and I did a slow lap around the pits.
Sat. morning after getting the bikes teched, I went out in practice on the Dondo and immediately discovered that I couldn't shift it past 2nd gear.  My incompetent mechanic (me) had indexed the gearbox selector incorrectly and that all I had to do to fix it was take the engine out of the frame and totally disassemble it.  That wasn't going to happen this weekend in the pits, so I put the smallest rear sprocket I had on the rear and rode the 4 lap heat race in 2nd gear, which was still way too short.  The track is long enough and the race was short enough that I didn't get lapped.  It was a bit futile, but people enjoyed seeing and hearing it run and it did run fine and passed the hot tech coming off the track and now I'll be able to see how things are doing when I do take it apart.
I won the P1 350 heat, which was run in the second wave, with P1 200 behind us, and P1 Open in the first wave. finishing 4th overall by passing one of the P1 Open bikes.
This is probably coming out of the last turn, but it could be turn #1.  Bill Murphy photo

I decided there was no point in riding the Dondolino anymore so I changed my Pre 50 entry to P1 500 for Sunday.  The P1 350 final was first and again I won my class and was 4th overall.  All weekend I had a slight, intermittent, and random misfire, which actually seemed more like an ignition cut out.  This seemed a little worse Sun., and after the P1 350 race, I checked over the bike looking for a loose wire or something.  I cleaned the points and checked the gap, but never found a smoking gun.  The P1 500 race was right after lunch and when I went to start the bike, there was not a pop.  I quickly disconnected the kill button and tried again, but still not a pop.  Then, I put in a new sparkplug, grasping at straws, but still nothing,  by this time the race had started without me.  I clearly did something wrong, but it always could be worse.  Better than a rod through the case.
My old friend John Wilson worked on his outfit all weekend and still has more work to do.
Gary Macaw's Alan Taylor Special Velo in a Lyster frame.  Holly Varey raced this, but had trouble with the vibration.
Holly Varey also race Gary Macaw's 250 Ducati 
Vickie Fournier raced this 250 Suzuki with a 4LS front brake that I didn't recognize 
Vickie also race this 250 Can-Am that her husband built.  There seemed to be a high percentage of women racing at Calabogie, always good to see.

The Crussell's equipe with Lorraine's CB175 in the foreground and Daves Z1, Bighorn, and TZ750 behind. 
Roger McHardy's 500 Norton twin ridden by Paul Brubaker
Paul Breubaker's own Kawasaki 550 GPZ with an innovative frame, suspension and fuel tank.
Jamie Bosson's G11 Matchless...
a bike that's been in his family forever and which he's about to restore.

Monday, June 3, 2019

AHRMA NJMP 2019

This year the AHRMA New Jersey M/S Pk event moved from it's traditional mid July date to Memorial Day Weekend.  I addition to my ERTT, I brought my CRTT 250 Sprint, which hadn't been on the track in over two years when it had a somewhat abortive return after another over two year layoff when it dropped a valve at Daytona '14.  In the mean time extensive cylinder head work had been done, new piston and valves, and a new exhaust system.  Also new for this event was a Helite inflatable vest.  This is worn over the leathers and is activated by a tether to the bike.  While a little difficult to get on and off and once I forgot to attach the tether when I went out for a race, I was please that it didn't get in the way or seem too hot.
Kurt Lentz stands next to my ERTT 350 with my CRTT 250 in the background.  Kurt and I started roadracing the same weekend, Memorial Day Weekend, 1972 at Bridgehampton, N.Y. and, while he isn't racing now, is still very much involved.
One thing that was not new were the tires on my 250.  If I'm reading the date codes correctly, the rear was manufactured the 35th week of 2008 (3508) and the front from the 47th week of 2004 (4704).  I have records that I installed them April '10 and March, '06, respectively, and a year and a half between manufacture and installation doesn't seem unreasonable.  These are the Dunlop KR 124A and KR 825 that haven't been made for years and which I liked so much.  So, my first practice on the 250 I took very gingerly initially, but gradually upped the pace and the tires seemed fine.  The bike ran alright, but seems to 'hunt' or 'surge' at higher revs.  I remember when we ran the bike on Pete Talabach's dyno, we backed off the ignition timing several times getting more power, then reduced the main jet several times until it made less power.  I hadn't gone back to the bigger jet that made the most power.  So I changed it before the race.  My 350 seemed good from the get-go.
The 250GP class was gridded behind the Sound of Singles 1, the biggest and most modern singles, in the first wave with Novice Historic Production in the second wave.  This seemed like a crazy combination but is a consequence of having too many classes and the difficulty of fitting them all in.  I counted on getting lapped.  I quickly got to the front of the 250s and, sure enough, as I was finishing my 6th lap, I saw the starter getting the last lap flag ready.  Bill Gillis on his 690 KTM powered Kramer came flying past at the end of the straight and sucked me into turn #1.  So, I ended up 1st in class and 4th overall.  I was pleased by the bike performance, though it still surged at the higher RPMs and I suspected the remote float.  It was more rigidly mounted than on my 350 and the motor does vibrate some, so I suspected fuel frothing.  John Melniczuk said that he thought he had some very small rubber mounts at his shop some 10 miles away and he'd bring them to me in the morning.
In the mean time, I checked the float height and raised it a bit.
The 350GP, this year's featured 'Vintage Cup', was gridded behind Vintage Superbike Lightweight in the first wave with Sportsman 350 in the second wave.  I got a pretty good start and braked late into turn #1 and followed Josh Saxe on a 650 BMW twin and John Rickard on his SR500 Yamaha into the turn #3 chicane.  Tim Joyce, on Ed Sensening's 350 Ducati stuffed underneath me in the right hand exit, but then couldn't find a gear and I didn't see him again.  I got by Rickard's SR but Alex McLean got by me on his Rickman Aermacchi.  As I gave chase, several times I noticed Alex reaching down with his left hand and grabbing his left leg.  Turns out, he was out in the immediately previous race on his pre-war Norton and it had oiled his boot which was slipping off the footrest and he was helping his leg back on, but in the process got his glove oily.  This was enough of a distraction for me to get back by him and start to close on Saxe on his BMW.  Neither of us knew that the race had been shortened and were surprise when the checkered flag came out at the end of the 6th lap with me 1st in class and 2nd overall.
The race had been shortened because of a couple of oil spills that required lengthly cleanups and the fact that there was a 'Monster Truck' event happening at the track that evening and AHRMA had to be done by a certain time.  I went out to dinner with a couple of very old friends and missed the show, but when we came back we had to wait a good 20 minutes as they let the spectators out, running the access road one way. 'Monster Trucks' definitely draw a bigger crowd than vintage bikes.
We had heavy thunderstorms over night and there were a few damp patches in the morning, but it got quite hot and the damp disappeared quickly.  The 250 ran better with the raised float, so I decided not to try to install at the track the rubber mounts John brought me.  I just did three practice laps on the 350.
Sunday morning there were puddles from the overnight thunderstorms.  Rich Ronay photo
On the warmup lap for the 250 race, I realized that I had forgotten to attach my inflatable vest tether and, when I got to the grid, I got one of the grid marshals to eventually understand my problem and he plugged me in.  But, in the confusion, I apparently got the gearbox into a false neutral and started the race in 3rd gear.  But, within a couple of laps I got in the lead of the 250GP and then started to close on a SOS 1 bike, which turned out to be a TZ125 Yamaha.  I was surprised that he didn't seem to have much top end speed on me, though he definitely had acceleration on me.  I passed and led him for a while, my bike running better with the raised float.  Again, I saw the starter getting the last lap flag ready as I was completing my 6th lap and Bill Gillis again came flying by to lap me.  Just before the checker, Brian Lowe, also on a Kramer lapped me, and then Dave Rhodes on the TZ125 pipped me right at the line.  Why this bike was being raced in SOS 1 I don't know as it's eligible and did race in SOS3.
For Sunday's 350GP, I didn't get as good a start, and again Tim Joyce stuffed me in the chicane, but then he had a problem with the bike and retired.  I  got into the overall lead in a couple of laps.  I almost tested my new inflatable vest when I got the front wheel skating across the track in turn #6 and in saving it, knocked the bike out of gear, then selected a gear too high.  Both Josh Saxe and Alex Mclean got by.  I first got Josh back, then Alex.  In turn #8 on the penultimate lap, Alex stuck a wheel in on me, but that wasn't going to happen and I backed him down, thinking that the last lap would be intense.  Two corners from the end, Alex's motor cut out as apparently his kill switch failed, and he pushed in.
Running 2nd overall and 1st 350 behind Josh Saxe in the turn #3 chicane.  Rich Ronay photo
So, four starts and four wins with some good dices, a very satisfying weekend.
There were four Vincent singles racing at NJMP


With support from two vincent twins

 

John Rickard's 500 Norton twin and SR 500 Yamaha.  Rich Ronay photo
Rich Ronay photo


Brian Smith's 798 Ducati.  Rich Ronay photo

Sunday, May 12, 2019

Unsprung Moto Rally

May 4th, 2019 was the third annual Unsprung Moto Rally put on by Nova Cycles in Turners Falls, Ma., but it was my first.  This event is much like a Moto Giro, but allows modern and big bikes.  Like the Moto Giros, each section starts and ends with an agility test, negotiating a short course through cones in a specific time, with points off if one it too slow, too fast, puts a foot down, knocks over a cone or runs out of the course.  And, like the Moto Giros, I'm not very good at the agility test.  Of the four tests at the Unsprung, I 'cleaned' each one, but was way too quick--more than 23 seconds in total.  this isn’t my typical M.O.; usually I’m too slow.
Negotiating the first agility test.  Barbara Holt photo

This was my time, but I think it was supposed to be 25+ seconds. Barbara Holt photo
But, not too slow out on the roads.  And the roads were excellent.  There were lots of dirt roads and, owing to all the rain we’ve been having, some were a bit ‘greasy’, but just about all of them remarkably smooth.  The paved roads ran the gamut from smooth to very rough.  There was limited time on State Highways and the vast majority was on back roads.  The route sheet was very good, though it only had the cumulative mileage, so one that to calculate the mileage  between turns in one’s head. And the arrowing was excellent.  There was only one place in the afternoon where I got a little confused and had to backtrack to confirm that I was still on course.
We did 70 odd miles in the morning and I gassed up roughly mid way.  I decided not to gas up before starting the afternoon section, but after I got going, thought it might be tight getting to the only gas stop at 60ish miles.  So, I started out pretty subdued, but as time wore on, I became confident that I would make it to gas and started riding harder.  But the very fine mist or occasional spot of rain became real rain for a while.  When I stopped for fuel, I put on my gaiters and overmitts and, of course, it didn’t rain again.
After I got fuel (with some to spare), I passed a clump of riders and three of them latched onto me and Robert Ignatowitz on a Sl350 Honda, Nelson Davis on a 200 Bridgestone Hurricane Scrambler and a fellow on a RD 400, jammed at a good pace.  I missed a turn and the three of them got by me and I followed them in.  93 miles and change in the afternoon.  The Unsprung was very well run, with great roads and a great crew.
Part of the line up with Alex (?) sleeping on his scooter
Quite a clean Honda 400F
Jacob Isleib's T-10 Suzuki, probably 1963 or 1964.  When he bought it, it would start and idle, but wouldn't rev up.  He discovered that the carb slides were in backwards
The moped army, at least three of them Peugeots.
Nelson Davis' 200 Bridgestone Hurricane Scrambler which he built out of 3 donor bikes and was shaking down for the USCRA Spring Giro.  It ran fine.
Rick Bell with his 250 Sprint
Michael Shia's Guzzi Eldorado