Sawyer Rob
Super Member
I had a 360 that I bought new...I had a 70s Yamaha DT250 enduro. It was my first bike. :thumbsup:
I hill climbed with it a bit, it had pretty good low end torque!
SR
I had a 360 that I bought new...I had a 70s Yamaha DT250 enduro. It was my first bike. :thumbsup:
On the positive side, the backup cameras offer quite an improvement. I first got one on my pickup, because I thought it would be nice when hooking up a trailer. I didn’t realize how useful I would find it every time I backed up.
I had a 360 that I bought new...
I hill climbed with it a bit, it had pretty good low end torque!
SR
Bultaco was a sweet trials bike! Rode with a guy that road a Bultaco to world trials champion back in the 70's, I don't know how to spell his last name but it was something like Googamali, first name Joe. He was a wizard, superb balance. Saw him more than once, standing on the seat of his Bultaco, sitting still, no kickstand, walk up onto his handle bars, then back to the back of the bike, plop down onto the seat, and get back up again, never losing balance or putting his foot down.I started out on a Honda 70, little orange one, what a rush that thing was at the age of 8. A Bultaco was next and then Indian was it from there on out..
I recently saw one listed on Hemmings or BAT, it was going for some pretty good money.Going through this list of fast bikes over the years, I was happy to see my little RD400 was faster in the 1/4 mile than a lot of stock bikes two and three times its displacement. :laughing:
It was always a joy to pull up to next to someone at a stoplight on a 1000cc+ bike and leave em lookin!
List of fastest production motorcycles by acceleration - Wikipedia
I can't imaging having a sub-10 second street bike out of the box, let alone highly modified. YIKES! That's fast.
I recently saw one listed on Hemmings or BAT, it was going for some pretty good money.
My first year in college a student had one of those which he parked right under my dorm window. He used to pi$$ a lot of people off the way that he racked the engine, the sound of the performance can he had would echo off the buildings. They were just coming out with synthetic oil, and didn't that two stroke stink. He flunked out after second semester, but we all groaned when the bike came back with another freshman.
I gave up reading these anecdotes after page 3.Why ride street bikes?
Going through this list of fast bikes over the years, I was happy to see my little RD400 was faster in the 1/4 mile than a lot of stock bikes two and three times its displacement. :laughing:
It was always a joy to pull up to next to someone at a stoplight on a 1000cc+ bike and leave em lookin!
List of fastest production motorcycles by acceleration - Wikipedia
I can't imaging having a sub-10 second street bike out of the box, let alone highly modified. YIKES! That's fast.
If you've never seen it live, pretty cool to see a fast 250 rider (OK, not a 450# guy) on a twisty road - can typically outpace many/most riders with much bigger bikes, w/o even trying hard....
Rgds, D.
A friend who was really into bikes went a similar route with his RD400- that thing would scream. I remember him pulling up beside me at a light the day after the races with the wheelie bar still on. When the light changed he was off like a shot.A guy I was lifeguarding with in the early 80's had a Kow Mach III H1 500 triple. It was pretty modified, and scared the bajeezers out of me. I was sitting on the back while he as doing 135 on a local road we liked to "try stuff" on. WEEEE!!! (no brains).
He knew I wanted to get rid of the enduro and get a street bike, and helped me find the 77 RD400. I was very impressed with it in stock form..... but we knew we could modify it for cheap and make it much more impressive. :laughing:
So, I started with boring it out just a bit, putting in different pistons to raise the compression a bit, ported it just a bit, put in different reed valves, removed the oil injection pump, put on much larger carbs, Specialist II expansion chambers, removed the air box and put on some high flowing K&N air filters, different clutch plates and springs, took two teeth off the front sprocket, got some lower handlebars, rear setback foot pegs, a fairing, and some wheelie bars for the dragstrip. Some nice Dunlop road racing tires for the street. I don't remember any of the specific part numbers, etc.... as it's been 30ish years. Most of the parts came from Specialist II. (they are still in business).
Stock it was supposed to turn low 14's in the quarter mile and had a published top speed of about 106.
I got it down to a pretty consistent sub 12's. A lot of 11:92 @ 119mph runs. A lot. I was really, really consistent. I'd dial in 11:91 and never break out when bracket racing and usually won the day. (whopping $15 first place and do $2-300 in damage for the day!!! :laughing
In that configuration, I was pushing some ungodly RPMs in 6th gear when going through the trap. When it was stock, I could rarely get it to red-line in 5th, and it would slow down in 6th. Taking the 2 teeth off the front sprocket dropped about 1 second off the 1/4 mile time and raised the top end speed. The wheelie bars shaved another good bit of time off, as you didn't have to worry about launching the front end off the ground.
About the only things left that I could have done were to get an air shifter, even more aggressive porting, and getting the crankshaft lightened, and a wider swingarm to allow for wider rear tire for better traction off the line.
I've seen a few sub-10 RD400s.... WOW!
Oh, I also weighed about 135# back then, had a 28" waist and was 6' tall! :laughing:
Today..... I'd bet the bike would groan if I sat on it!![]()
A friend who was really into bikes went a similar route with his RD400- that thing would scream. I remember him pulling up beside me at a light the day after the races with the wheelie bar still on. When the light changed he was off like a shot.
I haven't seen him in decades, but the last I heard he was still working on bikes at the local Harley shop.
After 40+ years of wrenching on them he's the guy I would want to work on mine if I was a rider.