PlanetMinis Forums banner

Rm65 pitbike

8.9K views 39 replies 15 participants last post by  Luckystar64  
#1 ·
How many of you guys out there are slammin' these things around pit bike tracks? How well do they rip/hold up? Anyone got some video? I would love to see a KX or RM 65 with a big bore kit.
 
#3 ·
I had to sell my kx65 back in the winter. put some springs on it and a klx110 tall seat and ride it. they are fast 6 speeds. clutch never missed a beat. none of the racing orgs around my area would let me race it. it was good fun on the track and on the trails. power is lightswitch though so take your time getting used to it. There are big bore kits but you don't need it really. 120 lbs bike with 14 hp stock. give or take. Also take klx110 plastics so you can get graphics anywhere. Good bike.
 
#5 ·
SUZUKIRM12594 said:
I'd imagine my dream 65 pitbike with



tall seat

KLX bend bars

Zokes

Excel black rims

HD spokes

Fastway pegs

Blue Plastics

Blue gripper seat cover

STR/TNP graphics

Procircuit Pipe/

R304 Shorty

pod filter

82cc BBK

etc.


that would be sick.....but ditch the blue seat cover and put a red one on and that would be a mini jgr factory mini bike.
 
#7 ·
I have a 5 second one of me on mine-- I don't know how to post it though....



I have a KX65 that I'm going to be racing in the pitbike races. They are letting me run it, but they aren't scoring it, so it'll just be for fun. I absolutely love my 65! Other than my stocker, I don't want to ride a 110 any more!



The thing holds up perfectly-- I think you should get one for sure! Don't do the big bore though, because the transfer ports are a little small. If you do V-Force reeds, a pipe, and good port job- you won't need anything else. It takes a few rides to get used to, but once you get it down, the bike is sweet! You can see mine on here if you search the threads, and there's a pic of it in the KX100 pit bike thread right below this one. --L*64
 
#8 ·
Couple things from a 65 racer....

Zokes would be a waste. (everyones in love with them!)

The 65 forks can handle anything they can, and with better brakes.

BBK on the little screamer net zero gain over a well tuned 65cc

screamer. The right port job, carb setup, exhaust, and timing...

You can approach 17hp. 25 lbs lighter than a KLX too. PM me if

anyone seriously builds one....I know what's up.
 
#9 ·
I agree with everything Stik- boy has said with the exception of the 'Zokes. Marzocchi makes a set of forks where the dropouts- (sliders) utilize the KX brakes.



I've got dozens of hours into riding my 65, and here's what I've learned about the suspension. The rear seems just about perfect with the PR2 Fox shock I'm running.



The front end (stock except with .36 springs per PR2, and 10wt. oil 110mm from the top with the springs out and the forks compressed) works pretty well over the small braking bumps and small stuff, but when I go bigger-- it acts weird on the landings. It kind of acts like I have too heavy of springs in them. It seems like the holes in the damping rods that control compression need to be bigger to allow the oil to flow through more quickly to let the springs compress and absorb the landing. It's like they go into "fluid lock" mode. Also-- they tend to rebound a little bit too quickly due to the heavier springs. (the stock spring rate is .28, I'm running .36 springs). I'm wondering if the holes for compression need to be drilled bigger, then the rebound holes need welded shut and drilled smaller.



I'm seriously thinking about getting the 'Zokes for my bike instead of monkeying with the stock forks. I can get them for around $750, because they don't come with the front wheel or brakes, you use the OEM stuff.



As far as the motor goes-- I've been running it bone stock for now. If I had more power out of it-- I could ride it a gear higher in the turns-- 4th instead of 3rd! One thing I love about this 65, is that I use all six gears that it has. On my 110-- the motor is stock save for a clutch, cam, and pipe. I generally stay in 2nd and third gears. There are alot of spots that I could go faster, but second gear is a bit low, and the motor isn't powerful enough to pull third. So I usually just pin it in second. The 65 has a really slick close ratio tranny that allows you to use 3rd through sixth. I rarely if ever shift down to second for any turn. Another thing-- is that the shifter only needs to move slightly to shift-- say, 35-40 degrees, compared to the 65 degrees that a 110 takes to shift.



Other than that-- I could use another 10 mm added to the shifter length-- and that's WITH the set back Moose pegs. I may try and adjust the shift lever up a notch to see how that works. The set back Moose pegs are a MUST for an adult to ride the bike comfortably in full MX boots. Hope this helps, and GO for the 65! --L*64
 
#12 ·
We were out of town this week at a baseball tournament. After lunch we stopped at the local Kawasaki dealer to let my son look at 65's since noone around here has one in stock. What surprised me is that it was only slightly taller than a stock KLX. Similar in size to my Pitster Pro X4. The KX85 on the other hand was a good big larger than the 65. Maybe a KX85 or KX100 would be a better sized mini for me (6'0", 185 lbs).
 
#13 ·
Wandell-- Yeah! You know I'm doing a KX100 right now, but it's more for me to ride at big bike tracks and indoors-- (bigger jumps). I don't enjoy riding bigger sized minis on the pit bike tracks because it doesn't feel like a pit bike. To me-- the fun of a pit bike is that I'm too big for it. If I were going to ride the KX100 at the pit bike tracks, I'd be better off with a 125 on big bike tracks. It's the smallnes that makes it fun! --L*64
 
#16 ·
Luckystar64 said:
The front end (stock except with .36 springs per PR2, and 10wt. oil 110mm from the top with the springs out and the forks compressed) works pretty well over the small braking bumps and small stuff, but when I go bigger-- it acts weird on the landings. It kind of acts like I have too heavy of springs in them. It seems like the holes in the damping rods that control compression need to be bigger to allow the oil to flow through more quickly to let the springs compress and absorb the landing. It's like they go into "fluid lock" mode. Also-- they tend to rebound a little bit too quickly due to the heavier springs. (the stock spring rate is .28, I'm running .36 springs). I'm wondering if the holes for compression need to be drilled bigger, then the rebound holes need welded shut and drilled smaller. --L*64


tried emulators?

i've got a set, wink-wink....



a longer shifter is no problem to weld up.



i LOVE the fact that i rip through all 6 gears on my KX.... i road race mine, so it regularly see's 2-6th.... on my klx, it was 3rd-4th, and thats it..... dont get me wrong, it pulled like a truck, and its fun.... but its easy to ride fast!! same lap times on my KX are harder, but more satisfying, if that makes sense to anyone!!



i put the 6 spd in my klx, and its more fun to ride than it was before.
 
#18 ·
HI-TECH HORSEPOWER said:
KX 65 .080 Big Bore Performance package



OVER 19H.P. BUT WHATS REALLY IMPRESSIVE IS THE TORQUE ITS AT 8.5ft lbs OF TORQUE,AND THE TORQUE SPREAD COVERS MORE THAN 1200 RPMs IN THE 8ft lb RANGE.



If you would like to see the Dyno sheets they are posted on ebay.


I can get you 19hp out of a bone stock KX, with a good clutch dip. I don't believe it, and I don't care what the run says.
 
#20 ·
stik__boy said:
I can get you 19hp out of a bone stock KX, with a good clutch dip. I don't believe it, and I don't care what the run says.


LOL, 19 out of a stock KX65-------no way! Been there, tested them(well tuned 15 maybe--even Kaw. tested them out at 14.6h.p.). We test them right at the sprocket shaft(No inertia dyno----actual torque/h.p. measurement)



We have even tested motors that they claim 21h.p., on our dyno, never made it past 20h.p. and the torque spread wasn't even close-------even the stroker motors(done by others) we have tested.



Any way I was just making a statement on Big bore's will produce good numbers and out perform strokers if built right.



Gene
 
#22 ·
I've talked to at least a few locals who have kids that ride and race 65's and 85's whose motors have had Gene at HTH work with them, and I've heard nothing but really good things about his services. Very knowlegeable.



The only reason I haven't put his products on my own 65 pit bike, is that they aren't cheap. The reason I put the 65 together in the first place was that I didn't want to spend a ton o' cash on the bike like I would have to in order to do a KLX110.



I want to make sure that I can race my 65 in the local races here before I dump any significant cash into it that I won't be able to recoup if I decide to sell the bike if guys are b*tch*ng about it at the races. At this point, I can simply unbolt my shock, and put the stock shock, fork springs, and footpegs back on-- and sell the bike for what I have in it.



If I can get through the rest of the year on it-- (Meaning that the rest of the riders are cool with it) then a set of the KX65 'Zokes will probably be the next investment. --L*64