CR500RA

[ah2stroke]

2020 Honda CR500RA ultralight prototype v2.0...the lightest wheels possible, front tires update with a super light new Michelin Sorry for the delayed post…trying to get back on track since most of my time has been consumed with non-moto work and working on a new shop/home in SoCal. This bi-coastal thing is a time killer…but we’re getting there. Now, off to a front tire update in the industry. There is a new lightweight king and we now have a match for the worlds lightest rear MX tire which is also a Michelin New front tire lightweight king as of ~Jan. 2021 is also a Michelin, de-throning the previous king by Metzeler, the 6-Days Extreme 80/100-21 at 7.725 lbs. (3504g)…by nearly 1/2 pound Front tire: Michelin Starcross 5 Soft 80/100-21 7.290 lbs. (3306g) Rear tire (still the lightest): Michelin Starcross 5 Soft 100/90-19 9.155 lbs. (4152g) #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #titanium #supercross #michelin #suzuki #yamaha #kawasaki #ktm #husqvarna #gasgas https://www.instagram.com/p/CSSO70-L5wG/?utm_medium=tumblr

[ah2stroke]

2020 Honda CR500RA Ultralight project v2.0...pipes/silencer finally arrived and in place. I’ve been working with @1744_racecreations on this one for a while and it arrived while I was traveling for a bit…so just got my hands on it and I just love it…all of it. It fits like a glove and I can pick it up with my pinky finger 😂 at 1436g Two pipes…one is raw/pure Ti and the second is blue anodized/burned. The silencer is a work of art made of all Ti and carbon fiber….so very light at 882g We put a plate on it as a tribute to Bayle @jmb111.jeanmichelbayle #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #titanium #supercross #1744_racecreations #suzuki #yamaha #kawasaki #ktm #husqvarna #gasgas https://www.instagram.com/p/CPMDChdA5-0/?utm_medium=tumblr

[ah2stroke]

2020 Honda CR500RA Ultralight project v2.0...pipe/silencer update. Here is another peek 👀 at the full Ti/Carbon exhaust (double set...one blued and one clean/pure Ti). It is uber-light. As stated earlier, its cloned after J-M Bayles RC500 pipe design 🚀 from PC. I’ve been working with @1744_racecreations on this one for a while. We had to re-spin it one time to get it perfect 👌. Good things take time. I’ll make a few more posts showing how it all came together soon...the design process and the progression...the the total weight 😉. Do you wanna see it all? Let me know #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #titanium #supercross #1744_racecreations #suzuki #yamaha #kawasaki #ktm #husqvarna #gasgas https://www.instagram.com/p/CNRCwBGg7Gx/?igshid=sl8sfeipujux

[ah2stroke]

2020 Honda CR500RA Ultralight project v2.0...playing around with a LiDAR Scanner app...it gets interesting with lower resolution scans of the whole room (not shown here) 😱 :) #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #titanium #supercross #1744_racecreations #suzuki #yamaha #kawasaki #ktm #husqvarna #gasgas https://www.instagram.com/p/CLUxndzARKx/?igshid=ced8yepku9dh

[ah2stroke]

2020 Honda CR500RA Ultralight project v2.0...mystery update. There will be a few mysteries coming...here is a peek 👀 at the first. Guess what it’s made out of...and guess what it weighs 🤷‍♂️. This one is cloned after J-M Bayles RC500 pipe design 🚀 from PC. Big props to the guy working on this...super inventive and aggressive...more to come there. 190lbs. and below...here we come...and nothing compromised and totally rideable #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #titanium #supercross #1744_racecreations #suzuki #yamaha #kawasaki #ktm #husqvarna #gasgas https://www.instagram.com/p/CLHQLiWA637/?igshid=ybdn2o2szezo

[ah2stroke]

OK...looking for some help with this one. Need someone that can CNC Ti 6Al4V for a countershaft sprocket. APICO used to make some...but non-existent now. I prefer the design of the first pic (custom part). I can harden/cryo if the maker doesn’t have the capability. DM please... #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #titanium #supercross https://www.instagram.com/p/CK1k6sFgE6j/?igshid=17aomhzv0it

[ah2stroke]

2020 Honda CR500RA Ultralight project v2.0...foot peg and mount update. Previously I had the lightest pegs you can buy on the market, the Al Flo pegs with stainless tips. They were lighter than all the other Ti offerings in the market since no one is being that careful with the amount of material they are using and they are overly thick and unnecessarily heavy. But...what about pegs you can’t buy 💡 👀. Through a contact I have I was able to get a set of factory HRC Ti pegs/mounts 🍾🎉🔥. I managed to scrape an extra 0.52 lbs. with the HRC Ti peg + Ti mount combination over the Al Flo pegs with modern 2016+ CRF mounts. I already had Ti pivot pins and bolts. The HRC factory pegs (96g) /mounts (59g) are super light, carved out in every possible corner/cavity...nothing else even comes remotely close New: 310g Previous: 544g Delta: 234g / 0.52 lbs See pics for more individual weight details and comparisons More trickery to come as we head towards a 190 lb. dry weight 500 with some things never seen before #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #titanium #supercross https://www.instagram.com/p/CKcx254gES5/?igshid=uzfstamz7gyc

[ah2stroke]

One of the coolest things on the CR500RA ultralight build for me is the custom carbon fiber head stay @legacycarbonmx did for me. It’s amazing how this 503cc two stroke monster feels so smooth and vibration free with this plus the @crankworksinc crank balance and match, and the 90mm piston and the 2000 CR250R digital ignition stator + flywheel. #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber https://www.instagram.com/p/CJWZ1WrgTMC/?igshid=w90zsnoucwox

[ah2stroke]

2020 Honda CR500RA Ultralight project v2.0...got the shock finished up. I managed to scrape an extra 0.27 lbs. out of the shock in various places New: 7.71 lbs Previous: 7.98 lbs Stock w/steel spring: 9.39 lbs Where did the weight loss💡come from compared to previous? New-found losses came from new preload rings, Mx-Tech triple adjuster, shock body polishing prior to coatings, and new/custom valving baseplate I spent a lot of time matching/surfacing everything inside (valving stacks/base plates/shims) and bleeding it with various tools to make sure there was zero air 💨 trapped inside while filling with @maximausa light 3wt 💯 synthetic racing fluid (RSF) and charging to 165 psi nitrogen What are the 🔬 specs Racetech Gold Valve - Expert MX valving Racetech Rebound Separator Valve Racetech bumper - dyed black Factory Connection bumper seat Lanier Suspension 3mm bumper spacer RCS Titanium spring Factory Connection Al preload rings K-Tech 8-click/rev rebound adjuster Mx-Tech Triple adjuster Body/clevis coatings by Aluminartanodizing Blue DLC shaft by Advanced CoatingTech SKF seal head w/bushings,seals Racetech Ultraslick seal grease Internal parts gold anodized - rebound rod, etc @racetechinc @mxtechsuspension @lainersuspension @fcsuspension @ktechsuspension @aluminartanodizing @advancedcoatingtechnologies @skfgroup @rentoncoilspring #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #titanium #racetechinc #fcsuspension #ktechsuspension #mxtechsuspension #lainersuspension #rentoncoilspring #skfgroup https://www.instagram.com/p/CF9wPqwg7wT/?igshid=t25p71b4yykx

[ah2stroke]

2020 Honda CR500RA Ultralight project v2.0...brake rotors revisited. Motostuff v1 blade brake rotors are the lightest on the market and my favorite, but after some discussions with both @motostuff_com and @racetechtitanium, Racetech Titanium offered to work with me on a custom Ti set with my design input. Here is the result...they should have them for sale relatively soon. This will be their first Ti rotor offering for Honda CR/CRF...long overdue...here we go Motostuff blade v1 280mm front rotor: 501g Motostuff blade v1 240mm rear rotor: 419g Racetech Titanium 280mm Ti front rotor: 324g Racetech Titanium 240mm Ti rear rotor: 274g 920g - 598g = 322g (0.71 lbs.) gone from unsprung weight...pretty huge I wanted to stay oversize (280mm vs. stock 260mm) for the braking power, and hardened/heat treated Ti rotors offer a bit less friction than hardened/heat treated steel...so let’s keep all the stopping power we can and drop the weight, which is what this project is all about. #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #titanium #brakes #motostuff_com #racetechtitanium https://www.instagram.com/p/CFihTdoAU_T/?igshid=14yleigfkazjn

[ah2stroke]

2020 Honda CR500RA Ultralight project v2.0...carbon fiber head stay brackets! Things have slowed down in the world and many things in the works have taken a bit longer, but they are really starting to come in now. Big thanks to @legacycarbonmx for coming through with these. They’re also working on a carbon fiber end cap for my Bill’s silencer on this project Original Al brackets: 112g Carbon brackets: 56g Exactly 1/2 the weight with 56g (0.123 lbs.) gone #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #legacycarbonmx https://www.instagram.com/p/CFLQHEcATcO/?igshid=16pg3xmjof11u

[ah2stroke]

2020 Honda CR500RA Ultralight project...factory replica suspension build parts finally all back now. The Blue DLC 😍 fork tubes and shock shaft should look great with the kash/black/red combination. Thanks much to Jerry and team @aluminartanodizing Now to start putting it all back together with the new valving in place... #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #dlc #blue #advancedcoatingtechnologies #aluminartanodizing #kashanodize https://www.instagram.com/p/CEfZ3yhgjW7/?igshid=1veeld1nljzab

[ah2stroke]

2020 Honda CR500RA Ultralight project...factory replica suspension build parts starting to come back in. Blue DLC 😍 fork tubes and shock shaft turned out just right IMO. Sometimes they are darker or lighter...these were Ice Blue right in the middle. ✅👌 I am happy and they are super slick. #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #dlc #blue #advancedcoatingtechnologies https://www.instagram.com/p/CDjHM1eA_Ky/?igshid=109zl4g143z9m

[ah2stroke]

2020 Honda CR500RA Ultralight project...last part of weight loss on the brakes. Previously I made a post on brake pads and weight with the Galfer 1054 compound semi-metallic pads being the lightest. I decided to take it one step further and had Clayton @trickeng to shave 🪒 the steel substrate of the brakes pads down to 2.5 mm from 3.1 mm. Two more slabs of steel gone. Here are the weights 3.1 mm plate thickness —> 2.5 mm Standard front G1054 pads: 125g Modified front G1054 pads: 114g Standard rear G1054 pads: 101g Modified rear G1054 pads: 89g OEM Honda Nissin front pads: 173g OEM Honda Nissin rear pads: 140g Total weight loss: 122g or 0.27 lbs of unsprung weight vs. before Just 🔥 from 🔥 brake 🔥 pads I also coated the backs of them with a black high temp. heat dispersant paint and have the Ti backing plates behind them for a heat barrier to the brake pucks (also Ti). #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #ceramic #teflon #composites #lettingoutallthesecrets #sumofparts #brakes https://www.instagram.com/p/CDZ_EiLAZMR/?igshid=tfl1nefretks

[ah2stroke]

2020 Honda CR500RA Ultralight project...more weight loss inside the wheels since I had the bearings out for the switch to ceramic. I realized the bearing spacer tubes inside were oversized beyond the contact area to the bearing center races (wasted material likely just for production tolerances). As part of a set of projects I sent to Clayton @trickeng I got him to mill down the tubes to match the inner bearing race thickness of 2 mm. Here are the weights and swipe to see pictures to back it up 3.9mm wall thickness —> 2mm OEM front wheel spacer tube: 42g Modified front wheel spacer tube: 28g 2.8mm wall thickness —> 2mm OEM rear wheel spacer tube: 70g Modified rear wheel spacer tube: 48g Total weight loss: 36g or 0.08 lbs of unsprung weight #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #ceramic #teflon #composites #lettingoutallthesecrets #sumofparts https://www.instagram.com/p/CDUAIQaAN_Z/?igshid=r0wkfb8yajhz

[ah2stroke]

Swipe right to see all three steps...what is step 4? #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds https://www.instagram.com/p/CCowBhNAVEU/?igshid=16ksu3r8ump75

[ah2stroke]

2020 Honda CR500RA Ultralight project... Ceramic bearings are super light, super hard, super slick, super efficient, and very tolerant to super high temps. Unfortunately they are expensive, so you won’t see them on production bikes. I have a supplier that was able to get me full ceramic (race and balls) ABEC5 (grade 5) Silicon Nitride bearings in 6905 and 6904 sizes that are double sealed (2RS). Compared to the OEM Koyo steel bearings that are only sealed on one side, they are slightly less than half the weight and will last far longer with no rust. The rear wheel has three 6905 bearings and the front has two 6904 bearings. Here are the weights and swipe to see pictures to back it up OEM Koyo Steel 6905 x3: 124g Si3N4 6905 bearings x3: 56g OEM Koyo Steel 6904 x2: 70g Si3N4 6905 bearings x2: 32g Total weight loss: 106g or 0.233 lbs of unsprung weight We’re going below 195 lbs. on a 500. Stay tuned...some big things coming and some custom work from some great suppliers to help further this project #cr500 #cr500r #cr500ra #cr500af #500cc #500 #2stroke #twostroke #openclass #honda #hrc #cr #motocross #enduro #gncc #mx #gp #factory #lightweight #weightnerds #carbonfiber #ceramic #teflon #composites #siliconnitride #si3n4 https://www.instagram.com/p/CClirU3gAJs/?igshid=192t2izqs6qpw