Messages

1

The Mad Scientist / Re: Transmission ratios for 250R-based hybrid project

« on: May 30, 2022, 09:21:28 PM »

That's kind of what I was thinking because first and second are lower geared, but some riders complain about the gap between second and third.  Compared to the KTM, the 250R has lower ratios for each gear and had a 13:38/39 final drive depending on model year.  I wonder if something like a 13 paired with a 40 or 41 would drop the KTM's ratios closer to the 250R.

2

The Mad Scientist / Re: Transmission ratios for 250R-based hybrid project

« on: May 30, 2022, 08:25:29 AM »

KTM SX, XC, and XC-w in that order.  All 250-300cc two-strokes.

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The Mad Scientist / Transmission ratios for 250R-based hybrid project

« on: May 28, 2022, 02:11:28 PM »

Howdy again, y'all! I haven't posted here in forever, but I figured I could pick the brains of some of y'all for advice. My question concerns using a dirt bike engine in a 250R-based ATV. Specifically, what transmission ratios would work best given the following combinations in the attached table? What would be a good starting point for final drive ratios? The primary riding will be in the dunes and trails, with some trips into the woods every once in a while. I'm not interested in drag racing at all. Any reply would be greatly appreciated.

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For Sale - Complete Bikes / Sold!

« on: January 28, 2016, 05:42:53 PM »

Well, it's going to a new home.  Thanks for the interest, y'all!

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For Sale - Complete Bikes / Sold!

« on: January 18, 2016, 07:19:00 PM »

Y'all are making me feel like I offered it too low.  But in all honesty, it has been sitting for a while, and it needs some attention.  It does have one damaged rail under the engine cradle, but it never gave me any grief.  I'm surprised how many responses I've gotten in such a short time.  I won't say who's made the deposit.  I don't count my eggs before they hatch.  The prospective buyer actually texted me about it last night before I listed it in the For Sale section.  I'm pretty sure he's a member here, but I don't know his screen name.

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For Sale - Complete Bikes / Sold!

« on: January 18, 2016, 12:32:59 PM »

No kidding.  SALE PENDING.

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For Sale - Complete Bikes / Sold!

« on: January 18, 2016, 11:35:06 AM »

Sold!

8

Wanted / Aftermarket framed 250r

« on: January 18, 2016, 10:41:24 AM »

Nevermind.  I just sold it.

9

Carburetor, Intake, and Exhaust / NO-Link Intake

« on: June 27, 2015, 09:14:39 PM »

Sorry, I'll be of no help for a no-link, but I'm PCSing to Ft. Riley in August, and I have a CR500 link Laeger's if you need one.  I'm not sure if the upper shock mount is different vs. a stock link.  I haven't been on here in a long time because I'm still in Korea, so I'm trying to re-learn some of the 250R specific info.

10

Lounge / TRX250R.org first year celebration. 4 sets .org engine stand give away

« on: July 21, 2014, 09:45:18 PM »

I will put your name in the the second drawing happening on Friday 7-18-2014 for a chance to win one of four sets of polished front motor mounts includes OEM nut and bolt. Never know what extra stuff will be laying around next July :lol:

So who won the engine mounts?

11

Introductions / Not new, just new here

« on: July 15, 2014, 03:47:23 AM »

Howdy!  I figured I'd join a site specific to the 250R since I own one.  I'm a member of 3WW, 3WO, ATVriders, Kawieriders, and several others I can't remember.  I go by either 69HemiGTX or Waynoka Local, depending on the site.  I'm not really sure why I changed my screen name, but I did.  I've used 69HemiGTX for a very long time, especially on car and truck sites.  Waynoka Local came from the fact that I used to live in Waynoka, OK, before I joined the Army.  Anyways, here's a pic of my 250R.  It's sat mostly unused due to my career, but it sure can run when I ask it to.  I'm 6' 6" and weigh 230, so it has a bit of power since it impresses me, and I have owned several LT500Rs.  I'm a Kawasaki guy at heart, but they're just too expensive and rare to build a go-to machine, so my plans are to eventually build a 430 Puma with midrange porting for the dunes.  I really like bottom-to-mid power, so I don't rev the crap out of my stuff.  That being said, I really like the way Arlan thinks.  I think his products from the air filter to the silencer and everything in between will do the trick.

12

LED Performance / LED Performance TRX250R Intake for Roll Design No Link Frame

« on: July 14, 2014, 04:58:58 AM »

See my signature?  Airbox or not, I'm interested, too.  I mostly ride the dunes, so no airbox is fine.

13

Duner / Little Sahara

« on: July 13, 2014, 04:37:26 AM »

I lived in Waynoka for several years, and I can attest to the heat and wind during the summer.  Having spent two tours in the sandbox (Iraq and Afghanistan), I can tell you it's nearly as hot on the dunes as over there.  It's no place for kids during the summer.  As I mentioned, the wind is a factor, too.  Being so low to the ground, they'll get sandblasted much easier, and it will be a trip they'd rather forget.  Believe me, the wind can sandblast you.  It'll blow up to 25-30 mph sustained at times.  Stick to the south campground, too.  The north campground and Cowboy Camp can get rowdy at times because the rangers have to travel to get there.  Their office is the first thing you meet when approaching from the south, so they can keep order there easier.  I would suggest the fall instead of the spring.  Even though the most severe weather is usually near central OK, NW OK gets its fair share.  May is very active almost everywhere in OK.  During the fall, the days are milder, the winds are calmer, the sunsets are gorgeous, and the nights are chilly enough for a campfire.  All of those combine to make wonderful memories for the kids.  Enjoy your trip.

14

Duner / Little Sahara article scan

« on: July 12, 2014, 11:06:41 PM »

Here's a scan from a regional magazine about Little Sahara in OK.  I used to live in Waynoka until a couple years ago, so I was there a lot.  My grandparents moved there long before people started riding the dunes (1950s).  When I retire from the Army, I'm moving the family to somewhere in OK, so we'll be nearby.

15

Lounge / What other 2 stroke motorcycles / atv's do you own?

« on: July 12, 2014, 09:27:09 PM »

Here are the other two-strokes I own.  First up is my 1984 Yamaha PW50 for my son that runs like a champ.  Next is my 1987 Kawasaki Tecate.  Yes, it's a real 87, and I bought it from the original owner last year.  What sucks is that they can't be enjoyed right now because we're stationed in Korea, and they're back in Oklahoma.  Oh well, they'll be there when we get back to the States.